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SFT2841 disconnected. Prepare setting files. Experts: L.GIGLI Pedagogy: C.CAYLA. Duration: mn. SFT 2841 expert UMI. The UMI on the front panel of Sepam may be completed by an expert UMI comprising the SFT2841 PC software tool, which may be used for all Sepam functions parameter setting, - PowerPoint PPT Presentation
Citation preview
Overview of the software
Sepam software CD
Parameter setting
Main points to remember
A
B
C
D
? Situate SFT disconnected
SFT2841 disconnected
Prepare setting files
Experts: L.GIGLIPedagogy: C.CAYLA
Duration: mn
SFT 2841 expert UMI
The UMI on the front panel of Sepam may be completed by an expert UMI comprising the SFT2841 PC software tool, which may be used for all Sepam functions
– parameter setting, – local operation – and customization.
The expert UMI comes as a kit, the SFT 2841 kit, which includes:– Sepam software CD– CCA 783 cord
Cable usb telemecanique
Overview of the software
Sepam software CD
Parameter setting
Main points to remember
A
B
C
D
? Situate SFT disconnected
Sepam software CD
Sepam software CD
After the CD is inserted, Autorundisplays this screen.
You may choose: SFT2841 installation SFT2826 installation Presentation of the Sepam offer
– Sepam range
– application solutions
– documentation
– product implementation
– different specifications per application
– order form
Autorun● Sepam software CD
● Overview of the software
● Parameter setting
Code entry
SFT2841 may be installed in
demonstration version or full version
Demonstration version– no serial number requested– connected mode disabled– file saving disabled
Full version– enter the serial number on the label
stuck on the back of the CD box– format: XXXXXXX-XX
● Sepam software CD
● Généralités
● Parameter setting
Content
The Readme files give the required configuration for installation of the software
The Demo directory contains the files used by the Sepams in Series 80 demo case
SFT2841 v9
Readme.txt
Lisezmoi.txt
Install
Demo
SFT2826v0202
Readme.txt
Lisezmoi.txt
Install
Disks
Sepam_presentation
Readme.txt
Lisezmoi.txt
Sepam v4.0_FR
Sepam v4.0_E
● Sepam software CD
● Généralités
● Parameter setting
Overview of the software
Sepam software CD
Parameter setting
Main points to remember
A
B
C
D
? Situate SFT disconnected
Overview of the software
OVERVIEW OF THE SOFTWARE
Starting the application
Click on the icon
Select the working language
Choose the operating mode:
– connected– point to point via the front
panel– via the network
– disconnected (according to Sepam)– create a new file– or edit an existing file
● Sepam software CD
● Overview of the software
● Parameter setting
Same access for SFT connected
Screen organization
Title bar: displays the Sepam file identification name
Menu bar (contextual): provides access to all of the software functions
Toolbar (contextual): Direct access to principal functions
Work zone: contextual tab boxes available to the user
Status bar: gives information on the active window
● Sepam software CD
● Overview of the software
● Parameter setting
Toolbar
Guided navigation– for logical sequencing of screens
● Sepam software CD
● Overview of the software
● Parameter setting
Sepam parameter setting
Protection setting
Logipam setting
Equation editor
– automation– inputs / outputs
Matrix
Function setting– disturbance recording– mimic diagram
– setup– environment
Guided navigation
Series 20 Series 40 Series 80
Hardware setup 1 1 1
General characteristics 3 2 2
CT-VT sensors 3 2 3
CT-VT circuit supervision 3 4
Particular characteristics 5
Control logic 2 4 6
Logic input/output assignment 2 4 7
Protection functions 4 5 8
Logipam 9
Logic equations 6 10
Matrix 5 7 11
Disturbance recording 3 8 12
Mimic-based UMI 13
Linking of screens
● Sepam software CD
● Overview of the software
● Parameter setting
Software help
Opening of the Sepam operating manual
The file opens up directly on the page that corresponds to the SFT2841 screen
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
Series 20 & 40
Saving the file
Saving by default in the Sepam directory
Entry of the file name
File extension– series 20, rpg– series 40 and 80, type
of Sepam (e.g. M41)
● Sepam software CD
● Overview of the software
● Parameter setting
Editing a report
Enter the report identification information
● Sepam software CD
● Overview of the software
● Parameter setting
Editing a report
Text file
All the parameters are listed
Sepam xxxx (21/03/2006)
PropertiesCustomer: TrainingProject: Series 20, 40 & 80Switchboard: FileCubicle: Series 20Print date: 24/04/06
Sepam hardware configurationType of application: Substation (S20)Sepam Type: Sepam xxxxSepam model: UD model (with fixed advanced UMI)MES (Input / output module): MES114 (10I + 4O module)MSA141 (1 analog output module): AbsentDSM303 (Remote advanced UMI module): AbsentInterface de communication: AbsentSynchronization mode: Network
Set up outputs Used Shunt coil Undervoltage coil Pulse mode O1 Yes X O2 Yes X O3 Yes X O4 Yes X O11 Yes X O12 No - - - O13 No - - - O14 No - - -
Series 20 & 40
● Sepam software CD
● Overview of the software
● Parameter setting
Editing a report
Word file
Cover page Contents
Series 80
Structure presentation of parameters
● Sepam software CD
● Overview of the software
● Parameter setting
Customizing the label
Enter the required label for each indicator
● Sepam software CD
● Overview of the software
● Parameter setting
Printing labels
● Sepam software CD
● Overview of the software
● Parameter setting
Advanced settings
Access to additional settings which are not compulsory but may be used on function operation
Series 40 & 80
● Sepam software CD
● Overview of the software
● Parameter setting
Overview of the software
Sepam software CD
Parameter setting
Main points to remember
A
B
C
D
? Situate SFT disconnected
PARAMETER SETTING
Parameter setting
1. Define Sepam hardware setup
2. Define Sepam hardware environment
3. Define automation functions used
4. Assign inputs / outputs
5. Set protection functions
6. Create mimic diagrams (series 80)
7. Create logic equations (series 40 & 80)
8. Set up Logipam (series 80)
9. Validate control matrix
10. Define disturbance recording function
Full parameter setting
Some operations may be done before others,
which is why we propose the following sequence:
● Sepam software CD
● Overview of the software
● Parameter setting
1. Define Sepam setup
Sepam name– 20 characters max.
Sepam model– with or without fixed
advanced UMI
Optional modules– optional inputs / outputs– temperature acquisition – analog output– communication
Series 20
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
● Sepam software CD
● Overview of the software
● Parameter setting
1. Define Sepam setup
Sepam name Sepam model Optional modules
Series 40
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
1. Define Sepam setup
Sepam name Sepam model Optional modules
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
2. Define Sepam environment
Frequency Active group of settings Remote setting enabling Sepam working
language Sensors
Series 20
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
2. Define Sepam environment
Frequency Active group of settings Remote setting enabling Sepam working
language Sensors
Type of cubicle External counters
Series 40
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
2. Type of cubicle
Incomer Power supplied to the busbars is
positive.
Feeder Power exported by the busbars is
positive.
Direction of flow
Direction of flow
Series 40 & 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
2. Define Sepam environment
Frequency Active group of settings Remote setting enabling Sepam working
language Type of cubicle External counters
Phase rotation direction Supply voltage
monitoring
and …
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
2. Define Sepam environment
Sensors
Series 80
as well as …
● Sepam software CD
● Overview of the software
● Parameter setting
2.
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
2. Define Sepam environment
Specific load characteristics
– transformer: SFT2841 calculates In and Ib according to rated voltage and power
– machines
– capacitor
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
3. Define automation functions used
CB control Protection units excluded
from CB control Logic discrimination
Series 20
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
3. Define automation functions used
CB control Logic discrimination
Series 40
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
3. Define automation functions used
Switchgear control Logic discrimination
And, according toapplications Restart Load shedding De-excitation Genset shutdown Automatic transfer Capacitor step control
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
3. Define automation functions used
CT circuit supervision VT circuit supervision
Series 40
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
3. Define automation functions used
CT circuit supervision VT circuit supervision
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
4. Assign inputs / outputs
Inputs Outputs
Series 20
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
4. Assign inputs / outputs
Inputs Outputs
Standard assignment oflogic inputs
– according to the type of application
– described in the "Control and monitoring function" chapter of the documentation
Series 40
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
4. Assign inputs / outputs
Inputs Outputs
Assignment of other uses oflogic inputs
– all "not used" inputs are assigned to "other use"
– if inputs are used in Logipam, they are assigned automatically
Series 80
The inputs/outputs used by Logipam are displayed in yellow
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. Set protection functions
Choice of protection functions
Activation Setting Control matrix
Series 20
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. Set protection functions
Choice of protection functions
Activation Setting Control matrix
Define whether the unit– is latched– affects CB control
Series 40
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. Set protection functions
This screen displays– protection functions in
service– which sensors are used
by the protection functions
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. Set protection functions
Choice of protection functions
Activation Setting Control matrix Define whether the unit
– is latched– affects CB control
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. Timer hold
Definitions:– Timer hold: time added to reset time to:
– delay the return to the initial situation – and activate a memory for the detection of recurrent faults.
– Reset time (of a protection function): time of return to the initial situation of a protection function after the disappearance of the fault (<50ms)
Applications:– definite time: detection of recurrent faults on networks earthed by a
Petersen coil (for directional earth fault protection)– IDMT: used to have a reset time similar that of a disc-type
electromechanical relay for improved discrimination when the relay is situated upstream.
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. Timer hold
Influence on tripping time
100% of trippingdelay
Time
I > Is
timer hold = 0
IDMT timer hold
definite-time timer hold
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. H2 restraint
Stability upon transformer energizing
This function should only be activated with Σ 3I earth fault protection upstream from a transformer
Transformer energizing generates number 2 harmonics . This function restrains the protection if the harmonic is above the set 17% threshold.
H2 > seuil
I1
I2
I3
TC + CSH30
CSH120 ou 200
Tore + ACE990
Σ Signal "pick up"
SortietemporiséeIo > Iso t 0
Schéma de principe protection 50N/51N
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. CT saturation caused by transformer energizing
I1
I2
I3
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
5. Io = I1+I2+I3● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
6. Create mimic diagrams
Will be explained in the "Mimic-based UMI" chapter
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
5.
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
7. Create logic equations
Will be explained in the "Equation editor" chapter
Series 40 & 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
8. Set up Logipam
Selection of the program– the files are placed in the
following directory:
C:\ProgramFiles\Schneider\SFT2841\Logipam
Activate Logipam
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
8. Set up Logipam
Set up internal bits
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
8. Set up Logipam
Set time delays
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
9. Validate control matrix
Column 1: input resources
– protection function delayed outputs
– logic inputs– miscellaneous
information
Row 1: output resources– logic outputs– indicators– activation of
disturbance recording
Series 20
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
grey: not modifiable
black: unavailable
red: off
white: on
9. Validate control matrix
The principle and the rules are the same as for those for series 20
Since there are more data items, the matrix is split into several screens
Series 40 & 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
grey: not modifiable
black: unavailable
red: off
white: on
9. Customize messages
Double-click on the message to be customized
Create the message Double-click on the new
message Enter the message
Series 40 & 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
9. Assign messages
Double-click on the message to be customized
Select the new message by clicking on the number
Assign the message
Series 40 & 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
10. Define disturbance recording function This function supplies a file:
– created by a trigger – composed of the recording of analog signals and logic
states (COMTRADE format)
Recording begins before the trigger and continues after the event (according to parameter setting)
stored recording
trigger
time
number of pretrig periods
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
10. Define disturbance recording function
Non-modifiable characteristics
– max. of 2 stored recordings
– 86 periods– 4 current or voltage
channels– 10 logic inputs– output O1– pick-up
Setting of pretrig
Series 20
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
10. Define disturbance recording function
Non-modifiable characteristics
– all analog channels– 10 logic inputs– outputs O1 to O4– pick-up– 1 equation editor
variable
Setting according to memory allocated
– number of recordings – duration of each
recording
Setting of pretrig
Series 40
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
10. Define disturbance recording function
Non-modifiable characteristics
– all analog channels
Setting according to memory allocated
– number of recordings – duration of each
recording– sampling frequency
Setting of pretrig Selection of recorded
logic states
Series 80
● Sepam software CD
● Overview of the software
● Parameter setting
1. Sepam hardware setup2. Sepam hardware environment3. Automation functions used4. Inputs / outputs5. Protection functions6. Mimic diagram (series 80)7. Logic equations (series 40 & 80)8. Logipam (series 80)9. Control matrix10. Disturbance recording
Overview of the software
Sepam software CD
Parameter setting
Main points to remember
A
B
C
D
? Situate SFT disconnected
MAIN POINTS TO REMEMBER
Main points to remember
faire "ce qu'il faut retenir"
A compléter
Astuces de paramétrage
Faire attention que le type de fichier corresponde au type de Sepam
Ne pas oublier de mettre les protections en service
Ne pas perdre le code de déverrouillage du SFT2841 qui se trouve sur la boite du CD d’installation.
Penser à valider les sorties qui doivent être utilisées dans la matrice de commande.
Le changement du type arrivée / départ modifie le signe de la puissance.
La passage par la navigation guidée permet de ne pas oublier de configurer des écrans.
Le SFT2841 vérifie la cohérence des valeurs rentrées en fonction des plages de réglage et du ratio des TC / TP