Coax Stripping Machine ST730 - Nitronic AG - 2555 Brügg BE ...nitronic.ch/con/cms/upload/02-Abisolierung/Download/S… · · 2011-11-30Nitronic ST730 5 Fig. 22. ... 230V / 50 -

Coax Stripping Machine

ST730

Operating manual

2 Nitronic ST730

www.nitronic.ch 2008 Stand: V2.2 Subject to change without notice! Publisher: Nitronic AG Mattenstrasse 11 CH-2555 Brügg Phone +41 32 373 7070 Fax: +41 32 373 7075 Web: www.nitronic.ch Email: [email protected]

Nitronic ST730 3

Machine DescriptionMachine DescriptionMachine DescriptionMachine Description ............................................................................................................... 6

Unpacking the ST730 ............................................................................................................. 6

Display, CDisplay, CDisplay, CDisplay, Controls, Connectionsontrols, Connectionsontrols, Connectionsontrols, Connections................................................................................................. 7

Control Panel........................................................................................................................ 7

Control Panel .................................................................................................................. 7

Description of Buttons and Switches.................................................................................. 7

Second Function Level (Additional Functions) ................................................................ 8

Fig. 1. Rear panel ........................................................................................................ 9 Connections ......................................................................................................................... 9

Mains Connection ........................................................................................................... 9

Remote Control ............................................................................................................... 9

RS 232 C .................................................................................................................... 9

Switch....................................................................................................................... 9

Electromagnetic Immunity (EMI)........................................................................................ 9

Set up................................................................................................................................ 10

Fig. 2. Remove protective foam ................................................................................... 10 Fig. 3. Remove safety cover / place machine in position ................................................. 10 Fig. 4. Toggle main switch (A) to I................................................................................ 10

Setting the Mains Voltage .................................................................................................... 11

Fig. 5. Fuse holder ..................................................................................................... 11 Exchanging the Mains Fuses ................................................................................................ 11

OperationOperationOperationOperation.............................................................................................................................. 12

Testing of Functionality ........................................................................................................ 12

Fig. 6. Stripping of sample cable ................................................................................. 12 Programming...................................................................................................................... 13

Processing Steps .......................................................................................................... 13

Programming of Steps ......................................................................................................... 14

1. Turn the unit ON .................................................................................................... 14

2. Allocate a program memory position ........................................................................ 14

3. Step 0................................................................................................................... 14

4. Step 1................................................................................................................... 14

5. Step 2................................................................................................................... 15

6. Step 3................................................................................................................... 15

7. Calling up the Program ........................................................................................... 15

8. Maintaining a List of Programs ................................................................................ 15

List of Programs........................................................................................................ 16

List of Programs (Example) ......................................................................................... 17

4 Nitronic ST730

Auxiliary Functions .............................................................................................................. 18

1. Open blades prior to pull-off (Wayback) ......................................................... 18

2. Partial Strip .................................................................................................... 19

3. Feed rate and rotation time ..................................................................................... 19

Rotating Time ........................................................................................................... 20

4. Rotation during pull-off ................................................................................ 21

5. Direction of rotation ..................................................................................... 22

6. Memory access locking code .......................................................................... 23

7. Toggle units mm / inch ........................................................................................... 23

8. Piece counter........................................................................................................ 24

9. Copying of memory contents - ................................................................. 24

10. Deleting of memory contents -

- .................................................... 25

11. Joining of multiple programs (Sequence) - ............................................... 25

12. Deleting a Sequence............................................................................................. 26

13. How to correct a programmed Sequence ................................................................ 26

14. Programmable pull-off speed ................................................................................. 27

MaintenanceMaintenanceMaintenanceMaintenance......................................................................................................................... 28

Service guidelines............................................................................................................... 28

Replacing the stripping blades .............................................................................................. 28

Loosen wire catcher ................................................................................................. 28 Fig. 7. Loosen set screws ........................................................................................... 28 Fig. 8. Centering guide lever ....................................................................................... 29 Fig. 9. Remove stripping blades.................................................................................. 29 Fig. 10. Push both stripping blades ......................................................................... 29 Fig. 11. Inserting the adjusting pin ............................................................................... 30 Fig. 12. Centering of the stripping blades using the adjusting pin ..................................... 31

Centering the centralizers .................................................................................................... 32

Fig. 13. Trigger contact .............................................................................................. 32 Fig. 14. Pull off protective ring..................................................................................... 32 Fig. 15. Positioning carriage ....................................................................................... 33 Fig. 16. Shift stripping blades outwardly ....................................................................... 33 Fig. 17. Adjusting the centralizers with the eccentric ..................................................... 33 Fig. 18. Mount centering device onto the stripping head................................................. 34 Fig. 19. Threaded spindle ........................................................................................... 34 Fig. 20. Slightly secure the centering device ................................................................. 34 Fig. 21. Open blade holders ........................................................................................ 35

Nitronic ST730 5

Fig. 22. Centralizers ................................................................................................... 35 Fig. 23. Centering the stripping blades using the brass sleeve ......................................... 36

Centering the grippers with the centering device .................................................................... 36

Fig. 24. Brass sleeve, 5.2 mm ...................................................................................... 37 Fig. 25. Insert spacer ................................................................................................. 37 Fig. 26. Centering the grippers .................................................................................... 38 Fig. 27. Adjust distance between grippers .................................................................... 38 Fig. 28. Gripper holder screws .................................................................................... 38 Fig. 29. Final check.................................................................................................... 39

Adjusting of the trigger contact............................................................................................. 39

Fig. 30. Loosen drive element...................................................................................... 40 Fig. 31. Shift drive element ......................................................................................... 40 Fig. 32. Adjust trigger contact ..................................................................................... 40 Fig. 33. Moving contact element ................................................................................. 41 Fig. 34. Adjust trigger stroke ....................................................................................... 41

Adjusting the clamping force ................................................................................................ 42

Fig. 35. Adjusting the clamping force ........................................................................... 42 Replacing the toothed belt.................................................................................................... 42

Fig. 36. Remove release rod........................................................................................ 43 Fig. 37. Remove locknut.............................................................................................. 43 Fig. 38. Dismantle stripping shaft................................................................................. 44 Fig. 39. Axial bearing clearance .................................................................................. 44

Cleaning and Inspection....................................................................................................... 45

Cleaning of the work space............................................................................................. 45

Cleaning the stripping blades and centralizers................................................................... 45

Fig. 40. Move blade holders inwards............................................................................ 45 Cleaning of the grippers ............................................................................................. 46

Lubrication Schedule........................................................................................................... 46

Fig. 41. Points of lubrication........................................................................................ 46 Diagnostic, Troubleshooting ................................................................................................. 47

General ........................................................................................................................ 47

Troubleshooting checklistTroubleshooting checklistTroubleshooting checklistTroubleshooting checklist...................................................................................................... 48

Technical dataTechnical dataTechnical dataTechnical data ...................................................................................................................... 54

Basic equipment, spares, optionsBasic equipment, spares, optionsBasic equipment, spares, optionsBasic equipment, spares, options........................................................................................... 55

Basic equipment ................................................................................................................. 55

Spare parts list ................................................................................................................... 55

Wear parts......................................................................................................................... 55

Options .............................................................................................................................. 55

Block Block Block Block diagramdiagramdiagramdiagram....................................................................................................................... 56

IndexIndexIndexIndex .................................................................................................................................... 57

6 Nitronic ST730

MMMMaaaachine Descriptionchine Descriptionchine Descriptionchine Description

The microprocessor controlled coaxial cable stripping machine ST730 is designed to strip wires and coaxial cables up to 7 mm outer diameter and strip lengths up to 30 mm in up to 9 steps. Even single insulated wires can be processed accurately. The ST730 is capable of storing up to 99 programs. Cable parameters can easily be stored and recalled at any time. Following a brief summary of the machine features:

• The operations of the 9 stripping steps can be done in a single fixation. This increases the processing speed and saves time.

• High reproducibility of the strip length when properly handled.

• Different wire diameters can be processed without any mechanical settings.

• Stripping and corrective values can be directly set and stored.

• Any stored stripping parameters can be selected and will remain in memory even in the event of blade changes or power failures.

• The stripping diameters can be precisely adjusted with an accuracy of 1/100 mm.

• The ST730 is easy to operate and enables the user to be familiar with the process within a few minutes.

• The precision of all components together with the microprocessor control assure the highest process reproducibility.

• The RS 232 interface makes the ST730 compatible with various peripheral devices.

Unpacking the ST730Unpacking the ST730Unpacking the ST730Unpacking the ST730

• Take the ST730 out of the package carefullycarefullycarefullycarefully and remove the packing material. • The packaging should be kept for future handling purposes. • In case the ST730 is to be shipped by post than the transportation locks (foamed plastic (1) between

the stripping head (5) and the clamping jaws (4)) must be in place (Fig. 2, page 10).

Nitronic ST730 7

Display, ControlDisplay, ControlDisplay, ControlDisplay, Controls, Connes, Connes, Connes, Connecccctionstionstionstions

Control PanelControl PanelControl PanelControl Panel This section explains the use of all buttons, switches and indicators

Control PanelControl PanelControl PanelControl Panel

Description of Description of Description of Description of BBBButtons and uttons and uttons and uttons and SSSSwitcheswitcheswitcheswitches

Cable No.Cable No.Cable No.Cable No.

Recalling data of an already programmed cable

StepStepStepStep

Select individual processing steps

LengthLengthLengthLength

Programming of the current strip length

Dia.Dia.Dia.Dia.

Programming of the respective diameters

Qty.Qty.Qty.Qty.

Internal total counter for produced cables

8 Nitronic ST730

Second Function LevelSecond Function LevelSecond Function LevelSecond Function Level (Additional Functions) (Additional Functions) (Additional Functions) (Additional Functions)

2222nd Fnd Fnd Fnd F

---- Activating and setting of the wayback function

---- Activating and setting of the partial strip

---- Activating the blade feed rate and rotating time

---- Activating the rotation during pull-off

---- Setting the direction of rotation

---- Activating and setting the password entry

---- Toggling units “mm” / “Inches”

----

----

---- Setting of the programmable pull-off speed.

---- ----

Copying of freely selectable memory segments.

---- ----

----

Deleting of a freely selectable program.

---- ----

Joining of several programs, sequences.

Nitronic ST730 9

ConnectionsConnectionsConnectionsConnections

AAAA Main switch to turn the ST730 ON or OFF.

Mains ConnectionMains ConnectionMains ConnectionMains Connection

• Mains connection (6), single-phase with protective earth (2P + E) (Fig. 1). • 100, 115V, 230V / 50 - 60 Hz • Maximum power consumption 100 VA • Fuses: 100 VAC - 115 VAC = 2 x 0.630 A/T 230 VAC = 2 x 0.315 A/T To set the mains voltage and to change the fuses, see page 11

Remote ControlRemote ControlRemote ControlRemote Control

RS 232 CRS 232 CRS 232 CRS 232 C

Port to connect the ST730 with a PC.

SwitchSwitchSwitchSwitch

Connection for a foot switch.

Electromagnetic Immunity (EMIElectromagnetic Immunity (EMIElectromagnetic Immunity (EMIElectromagnetic Immunity (EMI))))

Only specially designed cables must be used to make sure that the EMI requirements are fulfilled and thus ensuring the reduction of interference. In addition, the interface connectors (D-Sub) have to be properly fastened.

Fig. Fig. Fig. Fig. 1111. Rear panel. Rear panel. Rear panel. Rear panel

10 Nitronic ST730

Set upSet upSet upSet up

Check the set mains voltage on the unit and change if necessary following the instructions on page 11.

• Place the ST730 onto a firm and level bench.

• Remove the safety cover (2) by removing screws (3) (Fig. 2).

• Remove the foam (1) between the jaws (4) and the stripping head (5).

• Replace the safety cover (2) and fasten screws (3) (Fig. 2).

• Place the ST730 on a bench so that its front edge is flush with the edge of the bench. This way the stripping debris can fall into a waste basket.

• Plug in the power cord.

• Turn on the ST730 with the main switch (A) (Fig. 4).

Fig. Fig. Fig. Fig. 2222. Remove protective foam. Remove protective foam. Remove protective foam. Remove protective foam

Fig. Fig. Fig. Fig. 3333. Remove safety cover / place . Remove safety cover / place . Remove safety cover / place . Remove safety cover / place machine in positionmachine in positionmachine in positionmachine in position

FiFiFiFig. g. g. g. 4444. Toggle main switch (A) to I. Toggle main switch (A) to I. Toggle main switch (A) to I. Toggle main switch (A) to I

Nitronic ST730 11

Setting the Mains VoltageSetting the Mains VoltageSetting the Mains VoltageSetting the Mains Voltage

Turn OFF the ST730 with the main switch (A) and disconnect the power cord.

• Use a screwdriver to pull out the fuse holder (8). • Remove the voltage selector (7) and place it in the

desired position of the fuse holder (8). The selected voltage can now be seen in the small window of the fuse holder (8).

• Note the selected voltage on the nameplate. • Exchange the fuses according to the selected voltage. • Insert the fuse holder (8) in the ST730. • Connect the power cord.

ExchangingExchangingExchangingExchanging the Mains Fuses the Mains Fuses the Mains Fuses the Mains Fuses

Turn OFF the ST730 with the main switch (A) and disconnect the power cord.

• Use a screwdriver to pull out the fuse holder (8). • Exchange both fuses for the once listed below. 100 VAC - 115 VAC = 2 x 0.630 A/T 230 VAC = 2 x 0.315 A/T • Insert the fuse holder (8) again. • Connect the power cord.

Fig. Fig. Fig. Fig. 5555. Fuse holder. Fuse holder. Fuse holder. Fuse holder

12 Nitronic ST730

OperationOperationOperationOperation

TestingTestingTestingTesting of Functionality of Functionality of Functionality of Functionality Provided with the ST730 are two cable samples with different insulation thicknesses. One end of each cable was stripped with the machine for testing at the factory. The respective stripping values are stored in programs C01, C02, C03 (for the thinner cable) and C04 (for the thicker cable). The stripping quality of the ST730 can be tested as follows: • Select cable No. 1 ---- ----

• Place the thinner sample cable with the non-stripped end through the jaws (4) until it touches the

trigger plate (9). As soon as the cable touches the plate the stripping process is initiated based on the data set at the factory.

• The thin sample cable can be stripped applying different stripping sequences; for this purpose

press the button sequence C02 or C03. • Proceed with processing of the thicker cable, by selecting C04 in the same manner as described

above.

Fig. Fig. Fig. Fig. 6666. Stripping of sample . Stripping of sample . Stripping of sample . Stripping of sample cablecablecablecable

Nitronic ST730 13

ProgrammingProgrammingProgrammingProgramming

ProcessingProcessingProcessingProcessing Steps Steps Steps Steps The programmed steps (step 1, step 2 etc.) are processed in ascending order. The selection of the process sequence is achieved by programming of the respective steps. Standard Standard Standard Standard processprocessprocessprocess cycle cycle cycle cycle Special process cycleSpecial process cycleSpecial process cycleSpecial process cycle

AdvantagesAdvantagesAdvantagesAdvantages of the special process cycle of the special process cycle of the special process cycle of the special process cycle • The blade lifetime increases because the shielding is being cut only once. • Clean cut because the short shield is supported by the dielectric and insulation. • Clean cut edge of the dielectric because stripping is done as the last step; also partial strip can be

programmed to protect the conductor. Disadvantage of the special processDisadvantage of the special processDisadvantage of the special processDisadvantage of the special process Cycle Cycle Cycle Cycle

• Soft dielectric may be distorted and bent by the centering jaws, at StepStepStepStep 3333.

Only 3 of 9 possible steps are shown in this example.

14 Nitronic ST730

Programming of StepsProgramming of StepsProgramming of StepsProgramming of Steps

A 3-step processing cycle is to be programmed as follows:

1. 1. 1. 1. Turn the uTurn the uTurn the uTurn the unit ONnit ONnit ONnit ON

Toggle the main switch to IIII

2. 2. 2. 2. Allocate a programAllocate a programAllocate a programAllocate a program memory memory memory memory positionpositionpositionposition

Program Step Program Step Program Step Program Step Key Strokes Key Strokes Key Strokes Key Strokes

Select an empty memory position, e.g. Cable No. 10 ---- ----

3. Step 03. Step 03. Step 03. Step 0

ProgrProgrProgrProgramming:amming:amming:amming: To optimize the stripping time use Step 0Step 0Step 0Step 0 to enter the outside diameter of the wire. After starting the stripping cycle, the stripping blades immediately close to the selected outside diameter before they start cutting with the programmed feed rate (Page 3. Feed rate and rotation time19). At missing entry of At missing entry of At missing entry of At missing entry of Step 0:Step 0:Step 0:Step 0: In case Step 0Step 0Step 0Step 0 is not programmed the control uses the largest diameter stored in the current program. In this example the diameter in Step 3Step 3Step 3Step 3 is the largest one stored in the memory. This avoids the blades do not close with a high feed rate through the different layers. Rule: Rule: Rule: Rule: The diameter in Step 0Step 0Step 0Step 0 can never be smaller than the largest diameter determined in the current program.


Select Step 0 ----

Enter the cable outside diameter +0.5 mm

e.g. 6,50 mm. ---- ---- ----



Select Step 1 ----

Enter the stripping length 1, e.g. 5,0 mm ---- ---- ----

Enter the diameter 1, e.g. 0,90 mm ---- ---- ----

Avoid damagAvoid damagAvoid damagAvoid damaging of the cableing of the cableing of the cableing of the cable:::: select during programming a slightly larger stripping diameter and correct it downward after the stripping test.

Nitronic ST730 15

5.5.5.5. Step 2 Step 2 Step 2 Step 2


Select Step 2 ----


Enter the stripping diameter 2

e.g. 3,70 mm ---- ---- ----



Select Step 3 ----


Enter the stripping diameter 3

e.g. 4,85 mm ---- ---- ----

7. Calling up the Program7. Calling up the Program7. Calling up the Program7. Calling up the Program

The entered processing cycle can now be activated as desired by selecting program 10.

8. Maintaining a List of Programs8. Maintaining a List of Programs8. Maintaining a List of Programs8. Maintaining a List of Programs

To ensure the processing reproducibility, the stored parameters should be written down on paper using the List of Programs (proposed layout is shown on page 16). This list also provides info about the values stored in memory. In total are 99 storage locations available for programs.

9. Optimizing the Quality9. Optimizing the Quality9. Optimizing the Quality9. Optimizing the Quality To optimize the stripping quality and processing time various auxiliary functions are available (refer to Chapter „Auxiliary Functions“, page 18).

16 Nitronic ST730

List of ProgramsList of ProgramsList of ProgramsList of Programs

Date : ..................... Wire : ............................................. Program : ........... mm inch Program lock : yes no

StepStepStepStep

NNNNotes:otes:otes:otes:

Nitronic ST730 17

List of Programs (Example)List of Programs (Example)List of Programs (Example)List of Programs (Example)

Date : ..02 April 2008...02 April 2008...02 April 2008...02 April 2008................... Wire : .Sample wire RG59Sample wire RG59Sample wire RG59Sample wire RG59.................... Program : . C04.........C04.........C04.........C04......... mm inch Program lock : yes no

StepStepStepStep 00,0 6,50 - - 40 - L

05,0 0,90 - - 50 - L

20,0 3,65 20 - 49 - L

25,0 4,65 20 - 40 - L

Notes:Notes:Notes:Notes:

X

X

18 Nitronic ST730

Auxiliary FunctionsAuxiliary FunctionsAuxiliary FunctionsAuxiliary Functions

The following auxiliary functions can be used to optimize stripping quality and processing time.

1. Open blades p1. Open blades p1. Open blades p1. Open blades prior to rior to rior to rior to ppppullullullull----offoffoffoff (Wayback (Wayback (Wayback (Wayback) ) ) )

You can program the machine as such that the stripping blades open a little (in diameter) before the pull-off is carried out. Advantage:Advantage:Advantage:Advantage: • Better stripping quality because the blades will not scrape the conductor during the pull-off cycle.

• Increased blade lifetime. The opening of the blades (wayback) can be programmed for each step in increments ranging between 0,01 mm and 0,0,01 mm and 0,0,01 mm and 0,0,01 mm and 0,99 mm99 mm99 mm99 mm.


Select the desired step, e.g. Step 2 ----

Enter the blade opening value, e.g. 0.20 mm ---- ---- ----

The display will show ^ 20^ 20^ 20^ 20

The wayback can be deleted at anytime


Delete the selected wayback value ---- ----

Nitronic ST730 19

2. Partial Strip2. Partial Strip2. Partial Strip2. Partial Strip

To protect the exposed center conductor or shielding, the auxiliary function „Partial Strip“ can be selected for every step. The partial strip can be programmed in increments between 1 mm and 311 mm and 311 mm and 311 mm and 31 mmmmmmmm.

Program S Program S Program S Program Steptepteptep Key Strokes Key Strokes Key Strokes Key Strokes


Enter the partial strip length, e.g. 5 mm ---- ---- ----

The display will show 05 05 05 05

The partial strip value can also be deleted


Delete the selected partial strip value ---- ----

3. 3. 3. 3. FFFFeedeedeedeed rate rate rate rate and rotation tand rotation tand rotation tand rotation timeimeimeime

Cables with a hard outer insulation, strong shielding or soft dielectric can potentially be more difficult to process. In order to achieve high processing quality, it can be advantageous to adapt the feed rate and/or rotating time. This optimization can be programmed for all stripping steps (9) individually. When no values are being programmed, the following values are automatically set as default parameters for standard cables:

Blade fBlade fBlade fBlade feedeedeedeed rate rate rate rate

Feed rate for standard cables

Feed rate can be varied between 1 and 91 and 91 and 91 and 9. A low figure (1A low figure (1A low figure (1A low figure (1----3) results in3) results in3) results in3) results in

• greater feed rate • shorter processing time

Suitable for easy to cut insulation layers and dielectrics. A higher figure (4A higher figure (4A higher figure (4A higher figure (4----9999)))) results in results in results in results in

• smaller feed rate • longer processing time

Particularly suitable when cutting shielding over soft dielectric.

20 Nitronic ST730

Rotating Time Rotating Time Rotating Time Rotating Time

Rotating time for standard cable

The rotating time is the duration during which the stripping head continues to rotate after the blades have reached the programmed diameter. The programmed rotating time can be easily selected according to the following table.

approx. 0.2 seconds

approx. 0.4 seconds

approx. 0.6 seconds

approx. 0.8 seconds

approx. 1.0 seconds

approx. 1.2 seconds

approx. 1.4 seconds

approx. 1.6 seconds

approx. 1.8 seconds

approx. 2.0 seconds

When cutting into shielding, on a soft dielectric or when cutting through soft dielectric material on the respective conductors, it is particularly recommended to ito ito ito innnncrease the rotating timecrease the rotating timecrease the rotating timecrease the rotating time. ExamplesExamplesExamplesExamples The following three examples illustrate different blade feed rate and rotating time parameters: Example 1Example 1Example 1Example 1 With standard values

Feed rate

Rotating time 0.2 s0.2 s0.2 s0.2 s

Nitronic ST730 21

Example 2Example 2Example 2Example 2 With minimum feed rate, longest rotating time Program Step Program Step Program Step Program Step Key Strokes Key Strokes Key Strokes Key Strokes Select the desired step, e.g. Step 2 ---- Enter the value for the smallest smallest smallest smallest feed ratefeed ratefeed ratefeed rate and the longest rotalongest rotalongest rotalongest rotatttting ing ing ing timetimetimetime. ---- ---- ----

Example 3Example 3Example 3Example 3 With the greatest feed rate, shortest rotating time



Enter the value for the greatest greatest greatest greatest feed ratefeed ratefeed ratefeed rate and the shortest rotashortest rotashortest rotashortest rotatttting ing ing ing timetimetimetime. ---- ---- ----

4.4.4.4. Rotation during p Rotation during p Rotation during p Rotation during pullullullull----offoffoffoff

When stripping strandedstripping strandedstripping strandedstripping stranded wires wires wires wires it may occasionally be of advantage to have the cutting head rotating during the pull-off. Normally, the cutting head does not rotate during the pull-off of the outer jacket, respectively dielectric. This function can be selected for every step.

Program Program Program Program SSSSteptepteptep Key Strokes Key Strokes Key Strokes Key Strokes


Activate rotation during Pull-off ----

The display shows an r r r r next to L L L L or R R R R indicating ‘rotation during pull-off’

The setting is deactivated with the same key strokes.

22 Nitronic ST730

5. Direction of r5. Direction of r5. Direction of r5. Direction of rotationotationotationotation

As a standard the centralizers are designed for rotation to the left, ccw. Most cables can be processed with this standard setting.

Changing the rotational direction to clockwise/right is suitable when processing wires with twisted strands. In this case special centralizers must be installed! The centering of the cable can only be ensured when using the centralizers dedicated for the direction of rotation.

Within a program the rotation rotation rotation rotational directional directional directional direction must be set the same for all stepsthe same for all stepsthe same for all stepsthe same for all steps. The selection key is locked to prevent unintended changes. Therefore, the key has to be pressed twice to allow for changes. To change the rotational directions follow the instructions below:


Select the desired program, e.g. No. 20 ---- ----

Select the desired step ----

Change the rotational direction from clockwise do counterclockwise or vice versa ----

A question mark ?... ?... ?... ?... is blinking on the display

You can now acknowledge this function change

or delete it by pressing the FFFF key

At the top right hand corner of the display an RRRR or LLLL will be shown indicating the selected direction of rotation

Correct all steps of the respective program to the same directional rotation setting and make sure that the appropriate centralizers are installed.

Nitronic ST730 23

6. Memory access locking c6. Memory access locking c6. Memory access locking c6. Memory access locking codeodeodeode

Any set parameters programmed into the ST730 can be protected by entering a 3-digit freely selectable locking code. Make sure to Make sure to Make sure to Make sure to write downwrite downwrite downwrite down thethethethe code! Otherwise, acces code! Otherwise, acces code! Otherwise, acces code! Otherwise, access to the memory is no longer possible.s to the memory is no longer possible.s to the memory is no longer possible.s to the memory is no longer possible.

The following code numbers have been allocated and cannot be assigned:

• Code 232 is allocated to the RS232 interface • Code 888 is allocated to the automatic shifting of the home position of the stripping head when

the ST730 is used on automatic machines After the code has been entered the following activities can be selected only: Select Cable ¦ Select Step ¦ Select QuantitySelect Cable ¦ Select Step ¦ Select QuantitySelect Cable ¦ Select Step ¦ Select QuantitySelect Cable ¦ Select Step ¦ Select Quantity In case of forgotten or misplaced code, the memory can only be accessed with a classified code. This code can be obtained by the manufacturer or the local service partner.

7. 7. 7. 7. ToggleToggleToggleToggle unit unit unit unitssss mm mm mm mm //// i i i inchnchnchnch

To toggle the units on the Nitronic ST730 from mmmmmmmm to inchinchinchinch,,,, proceed as listed below. Any already saved values do not have to be re-entered. They will be converted automatically.


Select the desired unit, e.g. mmmmmmmm ----

To check to which unit the machine was previously set press the QQQQ key.

An m m m m for mm mm mm mm or an iiii for inchinchinchinch will be shown at the bottom right hand side of the display.

By pressing the F F F F key you will return to the main screen.

Program Step Program Step Program Step Program Step

Key Strokes Key Strokes Key Strokes Key Strokes

Enter a code number, e.g. 1 2 3 ---- ---- ---- ---- ----

On the display a P P P P will be shown adjacent to the step number.

By entering this code, e.g. 1 2 3, access to the memory is again enabled ---- ---- ---- ----

24 Nitronic ST730

8. 8. 8. 8. PiecePiecePiecePiece ccccounterounterounterounter

The integrated piece counter of the ST730 shows on the display the number of cables processed. The quantity value remains in memory even after the machine has been switched off.


Select the piece counter.

Set the piece counter to 0 0 0 0 before processing starts. ----

The display shows the following information:

C_C_C_C_ : Cable selected

S_S_S_S_ : Step selected

max S_max S_max S_max S_ : Number of steps in the selected program

m / im / im / im / i : mm - or inch setting

PPPP : Code (password) entered, access to memory locked


9. Copying 9. Copying 9. Copying 9. Copying of memory cof memory cof memory cof memory contentsontentsontentsontents ----

If identical cables of different lengths have to be processed, the possibility of copying stored programs exists. For example, the data of program No. 20 can be copied to program No. 36. Already programmed values in program No. 36 are automatically overwritten.


Select the copying function ---- ----

The display shows: Copy CCopy CCopy CCopy C

Enter the source program number, e.g. 20. 20. 20. 20. ----

The display now shows: Copy C20 toCopy C20 toCopy C20 toCopy C20 to C C C C

Enter the target program number, e.g. 36. 36. 36. 36. ----


Nitronic ST730 25

10. Deleting of memory c10. Deleting of memory c10. Deleting of memory c10. Deleting of memory contents ontents ontents ontents ---- ----

Stored programs can be deleted individually or all at once (all 99 programs).


First select the copying function ---- ----

The display shows: Copy CCopy CCopy CCopy C

Now select the delete function

The display now shows: Clear Clear Clear Clear CCCC

Enter the number of the program to be deleted, e.g. 50505050. ----

You You You You cancancancan also also also also delete all 99 programs, i.e. clear the edelete all 99 programs, i.e. clear the edelete all 99 programs, i.e. clear the edelete all 99 programs, i.e. clear the ennnntire tire tire tire memory. memory. memory. memory. ---- ---- ---- ---- ----


11. Joining of multiple11. Joining of multiple11. Joining of multiple11. Joining of multiple p p p programsrogramsrogramsrograms (Sequence)(Sequence)(Sequence)(Sequence) ----

If a cable needs different stripping lengths on either end than working with multiple programs is required. For this purpose with the „Sequence“ function an arbitrary number of programs can combined into a single sequence and processed one after the other. The stored programs in this case must be numbered consecutively.The stored programs in this case must be numbered consecutively.The stored programs in this case must be numbered consecutively.The stored programs in this case must be numbered consecutively.


Select the Sequence function ---- ----

The display will show Sequence CSequence CSequence CSequence C

Enter the program number, e.g. 20202020 ----

The display will show Sequence C20 to CSequence C20 to CSequence C20 to CSequence C20 to C

Now enter a second program number, e.g. 21212121 ----

The display will show: No.No.No.No. 01 Qty 01 Qty 01 Qty 01 Qty.: 0000.: 0000.: 0000.: 0000 SequenceSequenceSequenceSequence C20 to C20 to C20 to C20 to C21C21C21C21

NoNoNoNo.... 01 01 01 01 indicates the cable of the sequence which will be processed next, i.e. in this example program C20C20C20C20 is the next one to be executed. By pressing key 0 key 0 key 0 key 0 the previous prprevious prprevious prprevious proooogramgramgramgram and with key 1 the key 1 the key 1 the key 1 the following programfollowing programfollowing programfollowing program can be selected. The quantity increases only after the entire sequence has been processed. Afterwards, the lowest program numberlowest program numberlowest program numberlowest program number is selected again automatically.

26 Nitronic ST730

12. Deleting a Sequence12. Deleting a Sequence12. Deleting a Sequence12. Deleting a Sequence

A set sequence (e.g. 20202020----21212121) can be deleted by entering two identical program numbers.


Select the Sequence function ---- ----

The display will show Sequence CSequence CSequence CSequence C

Enter the program number 20 ----

The display will show Sequence C20 to CSequence C20 to CSequence C20 to CSequence C20 to C

Now enter the program number 20202020 again ----

13. How to c13. How to c13. How to c13. How to correct orrect orrect orrect a a a a programmed programmed programmed programmed SequenceSequenceSequenceSequence

You have the possibility of deactivating a defined sequence without deleting it.


Deactivate the sequence

You are now able to load and correct a program as described in Chapter Programming a „Step“.

Following this, you can re-activate the defined sequence

Nitronic ST730 27

14. Programmable 14. Programmable 14. Programmable 14. Programmable pullpullpullpull----offoffoffoff s s s speedpeedpeedpeed

If problematic cables or wires have to be processed (for instance, sticking or thin and soft insulation) it is advisable to set a lower pull-off speed. In Step 0 the speed can be changed between 10 and 90. If no value has been programmed the default value is set at 10 which corresponds to a normal pull-off speed.


Select Step 0 ----

The fastest pull-off speed is selected by entering ---- ---- ----

The slowest pull-off speed is selected by entering ---- ---- ----

TTTThe second he second he second he second digit in Step 0 digit in Step 0 digit in Step 0 digit in Step 0 has no function.has no function.has no function.has no function.

If you select partial strip for a respective step, the pull-off speed function is activated. If the maximum length of 30 mm is selected a full strip is performed at a slow pull-off speed.



Enter the desired partial strip length, e.g. 12 mm ---- ---- ----

If no partial strip parameter is programmed the normal pull-off speed is maintained.

28 Nitronic ST730

MaintenanceMaintenanceMaintenanceMaintenance

Service Service Service Service guidelinesguidelinesguidelinesguidelines We shall not be held responsible or liable for any damage caused by wrong manipulation and control as well as misuse of the machine. Therefore, we urge you to refrain from making modifications or changes to the ST730.

Replacing the stripping bReplacing the stripping bReplacing the stripping bReplacing the stripping bladesladesladeslades

Stripping quality and efficiency can only be warranted when using intact and genuine stripping blades. The ST730 is designed that any stored values are not altered when the stripping blades are being changed. Therefore, program resetting after changing blades are not needed. Centering of the stripping blades as described hereunder can only be realized when the jaws are Centering of the stripping blades as described hereunder can only be realized when the jaws are Centering of the stripping blades as described hereunder can only be realized when the jaws are Centering of the stripping blades as described hereunder can only be realized when the jaws are ccccentered correctlyentered correctlyentered correctlyentered correctly!!!!

Turn off the machine and disconnect the mains cable.

• Remove safety cover (2) (Fig. 2, page 10). • Loosen locknut (A) of the wire catchers (B) slightly. • Hold blade holder (11) in place and loosen the set screws

(10) of the stripping blades slightly (Fig. 7).

Loosen wire catcherLoosen wire catcherLoosen wire catcherLoosen wire catcher

Fig. Fig. Fig. Fig. 7777. Loosen set screws. Loosen set screws. Loosen set screws. Loosen set screws

Nitronic ST730 29

• Pull the stripping blades (12) out. • Clean the centering chucks (13) (Fig. 9).

Do not mix upDo not mix upDo not mix upDo not mix up the centralizers (13)!

• Mount new stripping blades together with the centralizers.

Make sure the centralizers lever (14) fits into the recesses (15) of the centralizers (Fig. 8).

• Slightly tighten the set screws (10). The stripping blades

(12) should still be slightly slightly slightly slightly movable with minimal play (Fig. 10).

• Push both stripping blades completely outwards of the

center (Fig. 10). • Plug in the mains cable and turn on the machine. The stripping blades are centered in the Test Test Test Test mode.

Fig. Fig. Fig. Fig. 8888. Centering guide lever. Centering guide lever. Centering guide lever. Centering guide lever

Fig. Fig. Fig. Fig. 9999. Remove stripping bla. Remove stripping bla. Remove stripping bla. Remove stripping bladesdesdesdes

Fig. Fig. Fig. Fig. 10101010.... PushPushPushPush bo bo bo both stripping th stripping th stripping th stripping blades blades blades blades

30 Nitronic ST730


Select wire program No. 00000000 ---- ----

Select Step 0 ----

Activate the TestTestTestTest mode. ----

The display will now show TestTestTestTest

Enter the length 00.0 mm00.0 mm00.0 mm00.0 mm ---- ---- ----

Enter the diameter 3 mm 3 mm 3 mm 3 mm ---- ---- ----

(This corresponds to the diameter of the adjusting pin.)

• Insert the adjusting pin (16) from the front through the

jaws (4) (Fig. 11).


Close the grippers by pressing key 1111

The grippers will hold the adjusting pin tightly.


Close the blades by pressing key 4444

The blades together with the centralizers move to the previously set diameter, i.e. 3.00 mm.

Fig. Fig. Fig. Fig. 11111111. Inserting the adjusting pin. Inserting the adjusting pin. Inserting the adjusting pin. Inserting the adjusting pin

Nitronic ST730 31

• Push the two stripping blades carefully until their cutting

edges contact the adjusting pin (16) and slightly tighten the set screws (10) of the stripping blades (12).


Press key FFFF

The blades open and the grippers release the adjusting pin.

• Turn off the machine (8) (Fig. 4). • Securely tighten the set screws (10) of the stripping blades (Fig. 12).

Do not over tighten the set screws (10) (Fig. 12) as this may damage the dovetail guides of the blade holders.

• Install the safety cover (2) (Fig. 2, page 10). • Turn the machine on. • Select a program and carry out the respective stripping test. • Check the stripping result.

In case the stripping results do not coincide with those previously obtained the blades have not been accurately adjusted and the adjustment must be repeated. By correcting the programmed diameter setting the adjustment can be optimized.

Fig. Fig. Fig. Fig. 12121212. Center. Center. Center. Centering of theing of theing of theing of the stripping stripping stripping stripping blades using the adjusting pinblades using the adjusting pinblades using the adjusting pinblades using the adjusting pin

32 Nitronic ST730

CCCCentering the entering the entering the entering the centralizerscentralizerscentralizerscentralizers

Turn OFF the machine and disconnect the mains cable.

• Remove the safety cover (2) (Fig. 2, page 10). • Remove the housing screws (31) and remove housing (17) (Fig. 2, page 10). • Tilt back the electronic part. • Unhook spring (18) and push back the trigger

contact (9). • Push back protective sleeve (20) and remove screw

(21) on protective ring (22) (Fig. 14).

Pull protective ring (22) forward (Fig. 14).

Fig. Fig. Fig. Fig. 13131313. . . . TriggerTriggerTriggerTrigger contact contact contact contact

Fig. Fig. Fig. Fig. 14141414. Pull off protective ring. Pull off protective ring. Pull off protective ring. Pull off protective ring

Nitronic ST730 33

• Move carriages (A) and (B) to the backmost

position (Fig. 15). • Loosen locking nuts (A) of the wire catchers (B) slightly (Fig. 16 and Fig. 17). • Loosen set screws (10) slightly and push stripping

blades (12) out of the center completely outwards (Fig. 16 and Fig. 17).

• Loosen set screws (23) of eccentrics (24) so that they

are still moderately tight but can still be rotated. • Rotate the two eccentrics (24) so that the centralizers

(13) are moved to the outermost position (Fig. 17).

Fig. Fig. Fig. Fig. 15151515. Position. Position. Position. Positioninginginging carriage carriage carriage carriage

Fig. Fig. Fig. Fig. 16161616. Shift stripping blades outwardly. Shift stripping blades outwardly. Shift stripping blades outwardly. Shift stripping blades outwardly

Fig. Fig. Fig. Fig. 17171717. . . . Adjusting the Adjusting the Adjusting the Adjusting the centralizerscentralizerscentralizerscentralizers with with with with ththththe eccentrice eccentrice eccentrice eccentric

34 Nitronic ST730

• Carefully install the centering device (25, as shown in Fig. 18) onto the stripping head. Make sure that the cross pin (26) of the centering device is positioned between the blade holders (11) and that the recesses (27) of the centering device line up with the eccentrics in the stripping head (Fig. 18).

• Turn threaded spindle (28) clockwise until the blade holders

(11) contact the cross pin (26) of the centering device on both sides simultaneously. Turn the centering device slightly to the correct position (Fig. 19 + Fig. 20).

In this manner, the centering device (25) can be centered and the blade holders (11) are being correctly positioned (Fig. 20). • Slightly fixSlightly fixSlightly fixSlightly fix the centering device (25) in this position with

screws (29) (Fig. 20 and Fig. 18). • Inspection: Both blade holders must contact the cross pin

(26) of the centering device simultaneously.

Fig. Fig. Fig. Fig. 18181818. Mount centering device onto the stripping head. Mount centering device onto the stripping head. Mount centering device onto the stripping head. Mount centering device onto the stripping head

Fig. Fig. Fig. Fig. 19191919. Threaded spindle. Threaded spindle. Threaded spindle. Threaded spindle

Fig. Fig. Fig. Fig. 20202020. Slightly secure the centering . Slightly secure the centering . Slightly secure the centering . Slightly secure the centering devicedevicedevicedevice

Nitronic ST730 35

• Open the blade holders by turning the threaded

spindle (28) counter-clockwise. • With the larger diameter forward slide brass sleeve

(30) onto the pin of the centering device (Fig. 21 + Fig. 22).

• By turning threaded spindle (28) clockwise close the blade

holders until the blade holders (11) are in contact with the cross pin (26) of the centering device (Fig. 22).

• Turn the eccentrics counter-clockwise until the two

centralizers (13) slightly contact the smaller diameter of the brass sleeve (30) (Fig. 17, page 33 and Fig. 22).

• Turn the threaded spindle (28) counter-clockwise until both blade holders (11) are in its fully open

position. • Tighten both set screws (23) of the eccentrics carefully (Fig. 17, page 33). • Inspection: When turning the treaded spindle both centralizers must simultaneously contact the

small diameter of the brass sleeve (30). • In this position slide the brass sleeve (30) forward a little bit until its larger diameter contacts the

centering guide (Fig. 23, page 36).

Fig. Fig. Fig. Fig. 21212121. Open blade holders. Open blade holders. Open blade holders. Open blade holders

Fig. Fig. Fig. Fig. 22222222. . . . CentralizerCentralizerCentralizerCentralizerssss

36 Nitronic ST730

• Slide both stripping blades (12) carefully until they are in

contact with the larger diameter of the brass sleeve (30) and carefully secure them with the set screws (10) (Fig. 23).

• Lock wire catcher (B) by tightening nut (A) (Fig. 16).

Do not overtighten the set screws (10) (Fig. 23) as otherwise the dovetail guides of the blade holders may get damaged.

Centering the grippers with the centering dCentering the grippers with the centering dCentering the grippers with the centering dCentering the grippers with the centering deviceeviceeviceevice

Only replaced or newly installed grippers need to be centered.


• Remove safety cover (2) (Fig. 2, page 10). • Remove the housing screws (31) and take off cover (17) (Fig. 2, page 10). • Tilt the electronic part back. • Hook off spring (18) and push trigger contact (9) back (Fig. 13, page 32).

Fig. Fig. Fig. Fig. 23232323. Centering the stripping blades . Centering the stripping blades . Centering the stripping blades . Centering the stripping blades using the brass sleeveusing the brass sleeveusing the brass sleeveusing the brass sleeve

Nitronic ST730 37

• Push back protective sleeve (20) and remove screw (21) on protective ring (22) (Fig. 14). • Pull protective ring (22) towards the front (Fig. 14). • Move carriages (A) and (B) to the backmost position (Fig. 15). • Carefully mount the centering device (25, as shown in Fig. 18, page 34) onto the stripping head. • Place brass sleeve (32) with a diameter of 5.2

mm onto the adjusting pin of the centering device (Fig. 24).

• Loosen gripper mounting screws (33) and

gripper holder screws (34) slightly (Fig. 24). • Pull plunger (35) of the magnet 36) to the rear. • Place the 8 mm wide spacer (39) between toggle levers

(37) and follower (38) (Fig. 25).

Fig. Fig. Fig. Fig. 24242424. Brass sleeve, 5.2 mm. Brass sleeve, 5.2 mm. Brass sleeve, 5.2 mm. Brass sleeve, 5.2 mm

Fig. Fig. Fig. Fig. 25252525. Insert spacer. Insert spacer. Insert spacer. Insert spacer

38 Nitronic ST730

• Carefully pull the stripping head (5) fully forward by hand (Fig. 26).

• Slightly press the two grippers (4) against the brass sleeve (32) of the centering device on both sides and firmly tighten the gripper mounting screws (33) defining the height of the centering (Fig. 26).

• Check again and make sure the stripping head is in its fully forward position.

• Open the grippers to a distance of up to 9.5 mm and line

up the fingers (40) of the grippers (4) (Fig. ) • Again press the two grippers (4) slightly against the brass sleeve (32)

of the centering device on both sides and firmly tighten the gripper mounting screws (34) thus setting the diameter of the centering (Fig. 28).

• Remove the spacer (39) (Fig. 25, page 37).

Fig. Fig. Fig. Fig. 26262626. Centering the gri. Centering the gri. Centering the gri. Centering the grippppperspersperspers

Fig. Fig. Fig. Fig. 27272727. Adjust distance between gri. Adjust distance between gri. Adjust distance between gri. Adjust distance between grippppperspersperspers

Fig. Fig. Fig. Fig. 28282828. Gripper holder screws. Gripper holder screws. Gripper holder screws. Gripper holder screws

Nitronic ST730 39

• Inspection: When pulling the magnetic plunger (35)

slightly forward both grippers (4) (upper and lower slide faces) must simultaneously contact the centering sleeve (32) (Fig. 29).

• Dismantle and remove the centering device (25). • Mount protective ring (22) and protective sleeve (20)

(Fig. 14, page 32 and Fig. 18, page 34). • Replace spring (18) and housing (17) (Fig. 13, page 32)

and safety cover (2) (Fig. 2, page 10).

Adjusting Adjusting Adjusting Adjusting of of of of the the the the trigger ctrigger ctrigger ctrigger contactontactontactontact

Turn off the machine and disconnect the mains cable.

• Remove safety cover (2) (Fig. 2, page 10). • Remove the housing screws (31) and take off cover (17) (Fig. 2, page 10). • Tilt the electronic part back.

Fig. Fig. Fig. Fig. 29292929. Final check. Final check. Final check. Final check

40 Nitronic ST730

• Retract the release rod (41) and loosen the screws (42) of the

drive element (43). The drive element should now be easily movable on the release rod (Fig. 30).

• Shift drive element (43) on the release rod (41) forward by

approx. 5 mm (Fig. 31). • Carefully pull the stripping head fully forward by hand.

• Rotate the threaded spindle (28) until the distance between the cutting

edges of blades (12) is 7 mm (Fig. 32). • Pull release contact (9) forward until the distance between trigger

contact (9) and the cutting edges of blades (12) is 0.5 mm (Fig. 32). • Carefully tighten the screws (42) of the drive element (43) (Fig. 31).

Fig. Fig. Fig. Fig. 30303030. Loosen drive element. Loosen drive element. Loosen drive element. Loosen drive element

Fig. Fig. Fig. Fig. 31313131. Shift drive element. Shift drive element. Shift drive element. Shift drive element

Fig. Fig. Fig. Fig. 32323232. Adjust . Adjust . Adjust . Adjust triggertriggertriggertrigger contactcontactcontactcontact

Nitronic ST730 41

• The release travel (Fig. 34) can be varied by moving the contact

element (45). For this purpose loosen screw (44) and displace contact element (45) (Fig. 33).

To increaseincreaseincreaseincrease the trigger stroke: Push stop (45) to the right (clockwise) (clockwise) (clockwise) (clockwise) (Fig. 33). To decreasedecreasedecreasedecrease the trigger stroke: Push stop (45) to the left (CCW)(CCW)(CCW)(CCW) (Fig. 33). • If the trigger stroke is 0.8 - 1.2 mm the screw (44) can be

tightened (Fig. 33 and Fig. 34).

Be sure not to overtighten the screw (44)!

Fig. Fig. Fig. Fig. 33333333. . . . MovingMovingMovingMoving contact element contact element contact element contact element

Fig. Fig. Fig. Fig. 34343434. Adjust trigger. Adjust trigger. Adjust trigger. Adjust trigger strokestrokestrokestroke

42 Nitronic ST730

Adjusting the clamping fAdjusting the clamping fAdjusting the clamping fAdjusting the clamping forceorceorceorce

The ST730 is shipped from the factory with the clamping force set at medium. This setting can be varied by moving of the magnet, i.e. reduced by approx. 40% or increased by 40%. This can be achieved as follows: • Loosen the mounting screws (46) of the magnet (Fig. 35). To reducereducereducereduce the clamping force: Move inMove inMove inMove in dire dire dire direcccction Ation Ation Ation A To increase increase increase increase the clamping force: Move inMove inMove inMove in dire dire dire direcccction Btion Btion Btion B • Tighten mounting screws (46) (Fig. 35).

Replacing the toothed bReplacing the toothed bReplacing the toothed bReplacing the toothed beltelteltelt


• Remove the safety cover (2) (Fig. 2, page 10). • Remove the housing screws (31) and take off cover (17) (Fig. 2, page 10). • Tilt the electronic part back. • Hook off spring (18) and push trigger contact (9) back (Fig. 13, page 32).

Fig. Fig. Fig. Fig. 35353535. Adjusting the clamping force. Adjusting the clamping force. Adjusting the clamping force. Adjusting the clamping force

Nitronic ST730 43

• Remove the screws (42) of the drive element (43) and

dismantle (Fig. 30, page 40). • Pull release rod (41) out of the stripping head (Fig. 36). • Unscrew the gripper holder screws (34) and remove

grippers (4) (Fig. 28, page 38).

• Unscrew and remove locknut (48) (Fig. 37). • Unscrew nut (49) of the stripping shaft (Fig. 37).

If an LLLL is punched into the motor carrier (50) the nut (49) has a left-hand thread (Fig. 37).

Fig. Fig. Fig. Fig. 36363636. Remove release rod. Remove release rod. Remove release rod. Remove release rod

Make sure not to mix up the grippers (4)!

Fig. Fig. Fig. Fig. 37373737. Remove locknut. Remove locknut. Remove locknut. Remove locknut

44 Nitronic ST730

• Loosen the set screw (51) by approx. 4 turns and pull

the stripping shaft (52) out of the machine (Fig. 38). • Install a new belt and mount the stripping shaft (52) in

reverse order (Fig. 38).

During mounting of the pulley make sure stud (51) and bore (53) line up.

When tightening locknut (48) make sure minimum clearance exists between the nut and the counter-washer (47) of the bearing (Fig. 39).

Afterwards, the trigger device and grippers must be adjusted again (page 36, and 39).

Fig. Fig. Fig. Fig. 38383838. Dismantle stripping shaft. Dismantle stripping shaft. Dismantle stripping shaft. Dismantle stripping shaft

Fig. Fig. Fig. Fig. 39393939. Axial bearing clearance. Axial bearing clearance. Axial bearing clearance. Axial bearing clearance

Nitronic ST730 45

Cleaning and InspectionCleaning and InspectionCleaning and InspectionCleaning and Inspection

The cleaning intervals primarily depend on the material to be processed and the quantity of stripping slugs produced. The cleaning and inspection activities cleaning and inspection activities cleaning and inspection activities cleaning and inspection activities listed below should be performed daily or as needed.


Cleaning of the work sCleaning of the work sCleaning of the work sCleaning of the work spacepacepacepace

Do not use compressed air for cleaning purposes!Do not use compressed air for cleaning purposes!Do not use compressed air for cleaning purposes!Do not use compressed air for cleaning purposes! Otherwise, smallest pieces of strands can enter the stripping head.

• Remove safety cover (2) (Fig. 2, page 10). • Using a cleaning brush remove any stripping debris from the processing space. • Repeat this procedure DAILY or as needed.

Cleaning the stripping blades and Cleaning the stripping blades and Cleaning the stripping blades and Cleaning the stripping blades and centralizerscentralizerscentralizerscentralizers

• Move (tension) blade holders (11) inwards and move the

centralizers (13) to the outside (Fig. 40). • Remove dirt using the cleaning brush supplied. • Inspection: The centralizers (13) must move freely. If

their movement/play is impeded by dirt deposits a proper stripping efficiency cannot be assured.

• Inspection: Condition of the stripping blades, replace if

necessary, see page 28.

Fig. Fig. Fig. Fig. 40404040. Move blade holders inward. Move blade holders inward. Move blade holders inward. Move blade holders inwardssss

46 Nitronic ST730

Cleaning of the Cleaning of the Cleaning of the Cleaning of the grippergrippergrippergripperssss

The clamping surfaces of the grippers must be clean to make sure wires can be held in place securely. • Clean the spaces and corrugations at the grippers with a brush.

Lubrication ScheduleLubrication ScheduleLubrication ScheduleLubrication Schedule

In the interest of a smooth and reliable functioning of the ST730 over longer period of time, it is of the essence that the lubrication intervals are being observed. Every 2 months: Use a lint-free rag to clean the spindle and apply over its entire length a thin coat of KLÜBER ISOFLEX KLÜBER ISOFLEX KLÜBER ISOFLEX KLÜBER ISOFLEX LDS 18 SPEZ.ALDS 18 SPEZ.ALDS 18 SPEZ.ALDS 18 SPEZ.A grease (Fig. 41).

Fig. Fig. Fig. Fig. 41414141. Points of lubrication. Points of lubrication. Points of lubrication. Points of lubrication

Nitronic ST730 47

DiagnDiagnDiagnDiagnostic, Tostic, Tostic, Tostic, Troubleshootingroubleshootingroubleshootingroubleshooting

GeneralGeneralGeneralGeneral

Experience has shown that malfunctions are rarely encountered with the ST730ST730ST730ST730 provided it is properly operated and maintained. Making use of the information furnished in this chapter malfunctions may be identified and remedied more easily. Before taking any further steps, check the following points: • Fuses are OK • The mains cable is plugged in • The main switch is turned to ON • Program No./Step selected match the desired wire/cable • The grippers are free of debris • The centralizers move freely • The stripping blades are in good condition In case the stripping quality is unsatisfactory please check the following settings: • Stripping blades (refer to centering of the stripping blades, page 28) • Centralizers (refer to centering of the centralizers, page 32) • Grippers (refer to centering of the grippers using the centering device, page 36) • Trigger contact (refer to adjusting the trigger contact, page 39) If a malfunction cannot be eliminated, refer to the troubleshooting checklist below (page 48). Should you not be able to take remedial action yourself, please contact your service partner or the manufacturer who can provide advice from trained experts. Describe the failure you have encountered as accurately as possible and try to pinpoint the location of the fault.

48 Nitronic ST730

Troubleshooting cTroubleshooting cTroubleshooting cTroubleshooting checklisthecklisthecklisthecklist

Fault Fault Fault Fault DiagnosisDiagnosisDiagnosisDiagnosis RemeRemeRemeRemedydydydy Wire moves out of the rotating axis

Please check.............Please check.............Please check.............Please check............. if the programmed rotating direction matches the installed centralizers. if the centralizers move freely. if the stripping blades are still sharp. if the gripping faces of the centralizers are dirty or contaminated. the depth of toothing of the centralizers - gripping surface (normally 2 mm).

Change direction of rotation Remove stripping slugs between stripping blades and centralizers using the brush supplied (page 45). Replace stripping blades (page 28). Clean the gripping faces of the centralizers (page 46). Replace centralizers (page 32).

Nitronic ST730 49

Fault Fault Fault Fault DiagnosisDiagnosisDiagnosisDiagnosis RemedRemedRemedRemedyyyy Variation in the strip length

Please check.............Please check.............Please check.............Please check............. if the position of the drive element (43) has been shifted. if the trigger contact is blocked. if the cable insertion force is irregular.

Readjust the trigger contact (page 39). Readjust the trigger contact (page 39). Insert the cable with a consistent force.

50 Nitronic ST730

FaultFaultFaultFault DiagnosisDiagnosisDiagnosisDiagnosis RemedRemedRemedRemedyyyy SSSStripping quatripping quatripping quatripping quallllity ity ity ity inadequate do inadequate do inadequate do inadequate do to..........to..........to..........to.......... improper starting cuts. insulation not fully cut through. conductors pressed into the dielectric of the shield. insulation is cut on one side only.

Please check.............Please check.............Please check.............Please check............. if the centralizers are moving freely. if the stripping blades are sharp and have no signs of chipped edges. if the steps are programmed correctly. if the gripper has been shifted out of the rotating axis. the symmetrical arrangement of the centralizers and stripping blades. if the stripping blades are sharp and have no signs of chipped edges. if one or both stripping blades is out of position. the cable for eccentricity or if there are irregularities.

Remove stripping slugs between stripping blades and centralizers using the brush supplied (page 45). Replace the stripping blades (page 28). Change programming. Use centering device to center the grippers (page 36). Use eccentric to adjust the position of the centralizers. Replace stripping blades (page 28). Center the stripping blades correctly (page 28). Contact the wire supplier.

Nitronic ST730 51

Fault Fault Fault Fault DiagnosisDiagnosisDiagnosisDiagnosis RemedRemedRemedRemedyyyy The stripping operation cannot be started. The trigger contact moves back slowly or not at all. The contact force is insufficient. The grippers do not hold the cable securely.

Please check.............Please check.............Please check.............Please check............. if the trigger contact can be moved freely. the centricity of the module in relation to the axis. whether the release rod is impaired by grease, oil or stripping slugs. whether the release contact spring is in place and has been properly tensioned. whether the tension of the release contact spring is adequate. if the grippers are dirty. if stripping slugs interfere with the clamping movement. if the magnet functions correctly. if the tension spring has been properly tensioned.

Readjust the trigger contact (page 39). Readjust the trigger contact (page 39). Clean the release rod. Mount the spring or shorten/tighten the spring. Tighten the spring of the release contact. Clean the grippers (page 46). Clean the grippers (page 46). Replace the magnet’s printed circuit board. Shift magnet in direction BBBB or replace the tension spring (page 42).

52 Nitronic ST730

Fault Fault Fault Fault DiagnosisDiagnosisDiagnosisDiagnosis RemedRemedRemedRemedyyyy The grippers do not open. The display shows: Error Motor DError Motor DError Motor DError Motor D Error Motor LError Motor LError Motor LError Motor L Error CoverError CoverError CoverError Cover The machine cannot be turned ON. The stripping operation is not properly performed or the cycle cannot be started.

Please check.............Please check.............Please check.............Please check............. if the grippers have been properly adjusted. overload when wire cutting starts. overload due to debris in the cutter head. overload because of stripping slugs blocking the cutter head. overload due to faulty assembly after cleaning or replacing the stripping blades. overload during stripping if the safety cover is installed. the fuses. An incorrect voltage has been selected.

Center the grippers again (page 36). Check programming by pressing the FFFF key. Clean the stripping head (page 45). Remove stripping slugs and clean the stripping head if necessary (page 45). Check assembly after cleaning or replacement of blades (page 28 and 45). Divide the stripping length into several steps (page 14). Install the safety cover and make sure it is correctly positioned. Tighten screws (page 10). Replace the fuse (page 11). Set voltage selector to the desired mains voltage (page 11)

Nitronic ST730 53

Fault Fault Fault Fault DiagnosisDiagnosisDiagnosisDiagnosis RemedyRemedyRemedyRemedy Action Action Action Action The stripping head moves to the stripping diameter and length end position and stands still. Motors oscillate. Irregular operation starts after a certain position has been reached.

Please check.............Please check.............Please check.............Please check............. if the electrical wiring in the mechanical portion is broken. the mains voltage selector is wrong. mains cable has not been plugged in correctly. the potentiometer is defective. screw connections have not been firmly tightened. the flat ribbon cable is defective.

Check soldering points and wiring. Adjust the mains voltage selector as needed (page 11). Plug in the cable properly. Replace as necessary the potentiometer governing diameter or length. Tighten connections. Replace the flat ribbon cable.

54 Nitronic ST730

Technical dTechnical dTechnical dTechnical dataataataata

Stripping lengthStripping lengthStripping lengthStripping length up to max. 30mm Stripping diameterStripping diameterStripping diameterStripping diameter up to max. 7mm Stripping capacityStripping capacityStripping capacityStripping capacity appr. 300 to 520 pcs/h (3-steps) Machine cycleMachine cycleMachine cycleMachine cycle 3-steps = 5 - 7 seconds, depends on auxiliary functions Noise levelNoise levelNoise levelNoise level appr. 62 dB (A) Stripping blades Stripping blades Stripping blades Stripping blades Carbide steel SettingsSettingsSettingsSettings Length: 0.1 mm steps

Diameter: 0.01 mm steps Stripping stepsStripping stepsStripping stepsStripping steps Max. 9 steps in one stripping cycle Program capacityProgram capacityProgram capacityProgram capacity 99 different wires with 9 stripping steps each Program memory Program memory Program memory Program memory retention retention retention retention timetimetimetime 2 years when disconnected from the mains Input voltageInput voltageInput voltageInput voltage Selectable 100V, 115V, 230V +/- 10% 50-60 Hz. Power cPower cPower cPower consumptiononsumptiononsumptiononsumption appr. 80 VA Net weightNet weightNet weightNet weight 9.5 kg DimensionsDimensionsDimensionsDimensions Length x Width x Height / 43.5 x 17.0 x 18.5 cm

Nitronic ST730 55

Basic equipment, spares, oBasic equipment, spares, oBasic equipment, spares, oBasic equipment, spares, optionsptionsptionsptions

Basic eBasic eBasic eBasic equipmentquipmentquipmentquipment

Qty.Qty.Qty.Qty. DescriptionDescriptionDescriptionDescription PPPPartartartart number number number number Pos.Pos.Pos.Pos.

1 Coax cable Stripping machine ST730 010124 1 Tube of grease GBJ 131 1 Brush 4 Hexagon key, width A/F 1.5 / 2 / 2.5 / 3 BN-1169-1.5

BN-1169-2.0 BN-1169-2.5 BN-1169-3.0

1 Operating manual 1 Open-end spanner 5,5 GN-7415 2 Sample cable, stripped 1 Adjusting pin ST-1208 1 Clamping system with adjustable

closing stroke

SpareSpareSpareSpare parts list parts list parts list parts list

Qty.Qty.Qty.Qty. DescriptionDescriptionDescriptionDescription Part numberPart numberPart numberPart number Pos.Pos.Pos.Pos.

1 Spring for centering chuck lever 1 Toothed belt 010162 1 Tension spring for blade holder 1 Tension spring for tightening

system

Wear pWear pWear pWear partsartsartsarts


1 Set Stripping blades (2 pcs.) 01009 1 Set Centralizers

OptionsOptionsOptionsOptions


1 Centering set

1 RS 232 retrofit kit

56 Nitronic ST730

Block Block Block Block ddddiagramiagramiagramiagram

Nitronic ST730 57

IndexIndexIndexIndex

Adjusting the Clamping Force ............................42 Adjusting the Release Contact ...........................39 Auxiliary Functions ...........................................18 Basic Equipment ..............................................55 Blade FeedBlade FeedBlade FeedBlade Feed .....................................................19 Blade Feed and Rotating Time ...........................19 Blockschema ...................................................57 Centering the Centering Chucks.........................32 Centering the Jaws via the Centering Device ......36 Changing over from mm to Inch .........................23 Cleaning and Inspection....................................45 Cleaning of the Jaws ........................................46 Cleaning of the Work Space ..............................45 Cleaning the Stripping Blades and Centering Chucks

...................................................................45 Connections.......................................................9 Control Panel .....................................................7 Copying Memory Contents ................................24 Correct Programs Joined in a Sequence.............26 Deleting a Sequence ........................................26 Deleting Memory Contents ................................25 Description of Keys and Switches ........................7 Diagnosis, Troubleshooting ...............................47 Direction of Rotation .........................................22 Functional Testing ............................................12 Interference Immunity (EMC) ...............................9 Joining of Several Programs..............................25 List of Spares ...................................................56 Lubrication Schedule ........................................46 Machine Description ..........................................6 Mains Connection ..............................................9

Maintenance....................................................28 Memory Access Lock Code ...............................23 Open Blades Prior to Strip Pull ...........................18 Operation.........................................................12 Options ............................................................56 Partitial Strip ....................................................19 Programmable Strip Speed ................................27 Programming ...................................................13 Programming of Steps.......................................14 Programmverzeichnis .......................................16 Programmverzeichnis (Example) ........................17 Quantity Counter...............................................24 Remote Control...................................................9 Replacing the Mains Fuses ................................11 Replacing the Stripping Blades ..........................28 Replacing the Toothed Belt................................42 Rotating Time ...................................................20 Rotation during Pull...........................................21 RS 232 C.............................................................9 Second Function Level ........................................8 Service Rules ...................................................28 Setting the Mains Voltage..................................11 Standard work cyclesStandard work cyclesStandard work cyclesStandard work cycles .....................................13 Switch ...............................................................9 Technical Data .................................................54 Troubleshooting Checklist .................................48 Unpacking the ST730...........................................6 Wayback .........................................................18 Wear Parts ......................................................56 Work Steps ......................................................13

Documents

Coax Stripping Machine ST730 - Nitronic AG - 2555 Brügg BE ...nitronic.ch/con/cms/upload/02-Abisolierung/Download/S… · · 2011-11-30Nitronic ST730 5 Fig. 22. ... 230V / 50 -