POWERPACKMODEL AJ02, AJ03
FEATURES
Photo1 AJ02Photo2 AJ03
The Powerpack is an electro-hydraulic actuator which converts DC signals (4 to 20 mA)into movements of a hydraulic work cylinder. A proportional positioning system is used to change the position of the work cylinder in proportion to electric signals.The Powerpack is an ideal actuator for use in garbage incineration plants, sewage treatment plants, etc. Because its output shaft rotates, it is suitable for final control elements such as a butterfly valve.
●High-speed, high-power operation can be obtained by hydraulic pressure converted from electric signals.●Because a hydraulic servo valve is used in the control element, high response and easy maintenance assure high reliability.●An electric feedback system is used.●A power supply is required only for the motor. No power supply is needed for the amplifier because a transformer is incorporated.●Manual local operation is available by changing over the switch.●Opening output signals (4 to 20 mA) are available as standard.●No oil leaks from joints because work cylinder and control elements are incorporated in the oil reservoir. No external piping is needed.●Safety functions are provided. The crank arm moves in the safety direction when input signals are abnormal (excessively low or high input)
or the wiring of the feedback potentiometer is broken. The direction for safe movement can be changed as required.
Pressure switch (option)
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Common specifications
Input signal 4 to 20mA DCInput resistance 250ΩOpening output signal 4 to 20mA DC (max. load 250Ω)Control action Proportional actionOperating direction Can be changed to any directionLinearity 2%Hysteresis error (no load) 2%Temperature drift 5% (0 to 60oC)Maximum crank rotation 60o
Installation HorizontalAmbient temperature -10 to +50oCTemperature range of hydraulic fluid +10 to +70oCPaint SilverManual operation function AUTO/MAN,OPEN/CLOSE
SPECIFICATIONS . MODEL CODESSpecifications by model
Model AJ02 AJ03
Operating torquekN . m
Max 1.2 * 2.4 Min 0.9 * 1.8
Maximum no-load speed(standard setting) o /sec
Hydraulic pressure MPa 2 2.2Cylinder bore X stroke mm φ 80 X 120 φ 100 X 140Length of crank arm mm 250 300
Motor (3 φ , 4P) 0.4kW3 φ 4P 0.75kW3 φ 4P
Oil required 18(21 for ACC) 28.5(35 for ACC) Mass (excl. hydraulic fluid) kg 115 150
Notes 1 : No explosion-proof specifications are available. 2 : The operating torque values are for 2.0 MPa in AJ02, and 22 MPa in AJ03.
Notes1) Crank arm rotation directions are from the crank arm side.2) Operation direction and specifications when using an accumulator (ACC)
The charged pressure of the accumulator's N2 gas is 1.5MPa. Shipped without gas in accordance with the High Pressure Gas Control Law.3) Signal errors will occur in the following situations. ① : Insufficient input signal (3.5mA or lower) ② : Excessive input signal (21mA or above) ③ : Feedback signal cutoff4) Standard pressure switch setup values are as follows. A = 0.5MPa, B = 0.3MPa
(Operates at 0.2MPa or less and reverts at 0.5MPa or more)5) The solenoid valve power box is used when power is
supplied from two systems, as in the following example.Example : 400V/440V and 100V
6) Wiring layout for this device is as follows. 1 : If both motor and control element are outdoor type, use flexible conduit tubing.
2 : For situations other than the above, use cabtyre cable wiring.
Control power supply
Dropped to 200-200V by the power boxand supplied to the solenoid valve.
Type
AJ
MODEL CODES
1)
2)
3)
4)
5)
02
03
L
S
F
R
N
A
B
1
2
1
2
N
I
D
Crank arm
Operation
Accumulator (ACC)
Manual operationswitch
Input signal or Feedback signal errors
Valve opening signal
Motor and controlelement case
Power supply
Pressure switch
Limit switch
Mannual operationlever
Power box for solenoid valves
Special specifications(described in detail)
Crank arm turns CCW when input signal increases.
Crank arm turns CW when input signal increases.
None
Provided (Crank arm turns CCW by ACC operation.)
Provided (Crank arm turns CW by ACC operation.)
Provided (Crank arm turns CCW when OPEN is selected.)
Provided (Crank arm turns CW when OPEN is selected.)
Crank arm turns CCW when an error occurs.
Crank arm turns CW when an error occurs.
None
Provided (Signal increases when crank arm turns CCW.)
Provided (Signal decreases when crank arm turns CCW.)
Normal arm
Reverse arm
E1
E2
1
2
1
2
3
4
N
1
2
N
1A
1B
2
N
1
N
1
2
Y
Indoor type
Outdoor type
Indoor type
Outdoor type
200V 50/60Hz
200V 60Hz
400V 50/60Hz
440V 60Hz
None
None
None
None
Indoor type
Outdoor type
SPS-K225 (indoor type) provided
SPS-K225WQ (Class 3 water spray-proof) provided
1(for counter-clockwise crank arm end position)
Two switches provided
AJ02
AJ03
0.4kW
0.75kWModel
4 to 5 3 to 4
CW : clockwise CCW : counterclockwise
(S spec. : Withdraw)
(E spec. : Lengthen)
Clockwise rotation
Counter-clockwiserotation
Control section
1(for clockwise crank arm end position)
Provided
Crank arm
Normal arm (L)
Reverse arm(S)
Operated by ACC
Counter-clockwiserotation (A)
Clockwise rotation (B)
Clockwise rotation (B)
Counter-clockwiserotation (A)
S Specifications
S Specifications
E Specifications
E Specifications
Specifications(Refer to following diagram)
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STRUCTURE
SOL
M
AMP
RST
+
+
3-ph power supply
Input signal4 to 20mA
Opening signal (output)4 to 20mA
ON whenpressuredecreasesON whenpressureincreases
1234
NCNOCOM
NCNOCOM
Pressure switchAllowable contact capacity (inductive load)AC125V 8.5ADC125V 0.2A
Limit switchAllowable contact capacity (inductive load)AC250V 12ADC 30V 12ALimit switch
123
1112131415
Fig.3 Wiring Diagram
Fig.2 Structural Diagram of Powerpack AJ02/AJ03
Fig.1 Hydraulic Circuit Diagram of Powerpack AJ02/AJ03
The hydraulic unit of the Powerpack consists of a current -hydraulic converter (servo valve), hydraulic pump, and workcylinder. The compact cast-iron reservoir incorporates awork cylinder, pump, crank, and feedback mechanism, andit needs no external piping.An amplifier and an AUTO/MAN switch are provided insidethe box on the reservoir to simplify operation at the site.Fig.1 and Fig.2 are a hydraulic circuit diagram and a structuraldiagram of the Powerpack, respectively. As shown in the figures, pressure oil from the hydraulic pump is introducedinto the oil pressure gauge and the filter, and is suppliedto the servo valve.When electric current is applied to the moving coil, it moves,and the spool valve directly coupled with the moving coilalso moves.
The oil is sent from port ① or ② to move the piston of thework cylinder and to rotate the crank shaft.This moves the wire of the feedback mechanism directly, rotates the potentiometer via a pulley, and inputs a feedbacksignal into the amplifier.The input signal and the feedback signal are operated inthe amplifier. When a desired value is reached, the outputsignal becomes 0 mA, and the spool valve is balanced and stopped at the desired position.The current signal is proportional to the force generated by the moving coil, and the rotating angle of the crank arm isproportional to the signal of the potentiometer. Therefore, the input current signal is proportional to therotating angle of crank arm.
Motor
Pressure gauge
Filter
Suction filter
Work cylinder
Hydraulic pumpSupply
Return
①②
Servo valve
Crank shaft
Crank
Amplifier
Input 4 to 20mA
Opening signal 4 to 20mAPressure switch(option)
200mA
Solenoid valve
Servo valve
Hydraulic pumpWork cylinder
Feedbackpotentiometer
Relief valve M
We reserve the right to change the specifications in this catalog without prior notice to improve and update our products.
April 2007 50HK Printed in JapanQI0241.7-E
Inquiries to:
Fig.4 POWERPACK AJ02POWER : 200/220V, 400/440V, 50/60HzDwg.No. : AD1900.3-EA
E TERNAL DIMENSIONS
Fig.5 POWERPACK AJ03POWER : 200/220V, 400/440V, 50/60HzDwg.No. : AD1910.2-EA
Kyobashi OfficeKyobashi 1-chome Bldg.,13-1,Kobashi 1-chome,Cho-ku.Tokyo Japan 104-0031TEL:+81-3-3562-2201FAX:+81-3-3564-4316
APPROX.
(WELDS SPACE)
PRESS. UP
PRESS. DOWN
CONTACT CAPACITY
INPUT SIGNAL
EARTHING
WHEN
WHEN
(OUTDOOR TYPE)
✩ PRESS. SWITCH (PS)
3-G1/2(OUTDOOR TYPE)3-φ 22 (INDOOR TYPE)CABLE CONN.CONTROL ELEMENT
✩ HAND LEVER
PROVIDED BY OTHERPIPE (SGP 1B) TO BE
300
MIN
.
OUTDOOR TYPE MOTOR
INDOOR TYPE MOTOR
MTG. HOLES4- φ 22
DRAIN PORTRc3/8
POSITION IN 7.5o INCREMENTSCRANK ARM CAN BE SET IN ANY
OIL LEVEL GAUGE AND OIL FILLER
JIS F8801 C20φ 22 (INDOOR TYPE)
CABLE CONN.MOTORE
AJ02
ON ATDC 125V 0.2AAC 125V 8.5ACONTACT CAPACITYALLOWABLE✩
LS✩
✩
4321
CNONCCNONC
212019181716
TSR
4 20mADC ( 250Ω MAX.)VALVE POSITION SIGNAL
50/60HzPOWER
1514131211321
PS
LS
DC 30V 12AAC 250V 12A
ALLOWABLE
ON AT
TERMINAL CONN.
NO REQUEST 440V 400V 220V
200V
4 20mADC ( 249Ω)
CONN. ROD
TAKE UP THE PERIPHERAL SPACE OF 500mm OR MORE AROUND THE POWERPACK.NOTE 1
RELIEF VALVE
2- φ16M
AX.2
224
φ16h9
5360
APPR
OX.
555
φ16h9
L-2205
L±15 (MAX. 2500)
320370
200 240
5020
0
35
65 570
220
390
APPR
OX.
1100
15 T
O R
EMO
VE M
OTO
R
5
✩: OPTION
15TO
REM
OVE
MO
TOR
300
MIN
.
15o 30o
LS
LS
INPUT SIGNAL4 20mADC (249Ω)
ALLOWABLECONTACT CAPACITYAC 125V 8.5ADC 125V 0.2A
1231112131415
VALVE POSITION SIGNAL4 20mADC (250Ωmax.)
RST
161718192021
NCNOCNCNOC
1234
ALLOWABLECONTACT CAPACITYAC 250V 12ADC 30V 12A
✩
ON ATPRESS. DOWNON ATPRESS. UP
✩ : OPTION
✩
PS✩
45o NO CONNECTION ONE.NOTE 1TAKE UP THE PERIPHERAL SPACE OF 500mm OR MORE AROUNDTHE POWERPACK.
NOTE 2
NOTE 1
CONN. ROD
APPROX.
(WELDS SPACE)
AJ03E MOTOR
EARTHING200V220V400V440V
NO REQUESTPOWER 50/60Hz
TERMINAL CONN.
RELIEF VALVE
CRANK ARM CAN BE SET IN ANYPOSITION IN 7.5o INCREMENTS
PIPE (SGP 2B) TO BEPROVIDED BY OTHER
Rc3/8DRAIN PORT
4-φ 22MTG. HOLES
2-φ 20
CONTROL ELEMENTCABLE CONN.3-φ 22 (INDOOR TYPE)3-G1/2 (OUTDOOR TYPE)
✩ HAND LEVER
WHENINDOOR TYPEMOTOR
WHENOUTDOOR TYPE MOTOR
PRESS. SWITCH (PS)CABLE CONN.
φ 22 (INDOOR TYPE) JIS F8801 C20 (OUTDOOR TYPE)
OIL LEVEL GAUGE AND OIL FILLER
340
390
250
440
60
L-250 55
220
62
657
60
APPR
OX.
635 AP
PRO
X.11
00
MAX
.22
φ 20h9
27
250
50
250
38
φ 20h9
L±15(MAX.2500)
✩
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