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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