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10 EATON 420 Mobile Piston Pump Technical Manual E-PUPI-TM002-E4 November 2014

Control Options

EH Inverse Proportional

Pressure Control (IPPC)

EH Inverse Proportional

Pressure Control (IPPC)

The EH Inverse Proportional

Pressure control allows for

stepless variation of the max

pump output pressure, as per

the current signal provided to

the control valve solenoid.

The integrated pump control

makes use of an external

current signal to vary the

pump output pressure.

This control has an inverse

proportional characteristic

i.e. with increasing cur-

rent signal, the max output

pressure is proportionately

reduced.

Warning: The pressure set-

ting may be adjusted beyond

the rated pressure of the

pump. When adjusting the

pressure, install a 0-350

bar (0-5000 psi) gage in the

outlet gage port and limit

the pressure setting to the

continuous rated pressure

for the pump displacement

shown on page 6.

Pressure Limit Settings

The EH IPPC covers

pressure range of the ADU

pumps. The max pressure

can be set from 140 bar

(2050 psi) to 280 bar (4060

psi).

Typ. Current vs Pressure

Characteristics of IPPC at

1800 rpm at various max

pressure settings at 49

deg C (120deg F), static

conditions.

0 100 200 300 400 500 600 700 800

100

150

200

250

300

Current (mA)

Pressure (bar)

ELECTRICAL DATA

Voltage 12 V 24 V

Max Current 1500 mA 750 mA

R20, Resistance(ohm) 5.3 +/- 5% 21.2 +/- 5%

Type of Control Current Current

Recommended 100 Hz 100 Hz

PWM Control

Frequency

Duty Cycle 100% 100%

Insulation material Class H, 180 deg C Class H, 180 deg C

Protection Class IP6K6/IPX9K IP6K6/IPX9K

Connector AMP Junior Power AMP Junior Power

Timer/ Deutsch Timer/ Deutsch

Connector DT04-2P Connector DT04-2P

Operating Temperature -30 deg C; 105 deg C -30 deg C; 105 deg C

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 42 43

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