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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
0
50
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
- Introduction 2
- Table of Contents 3
- Model Codes 4
- Specifications and 6
- Pressure Compensator 8
- Torque Control 9
- EH Inverse Proportional 10
- Pressure Control (IPPC) 10
- Control Options 11
- Cold Start Valve 12
- Efciency (%) 13
- Input Torque, Nm (in-lb) 14
- Performance 15
- Pump Installation 25
- Control Installation 32
- External Manual 37
- Stroke Adjustment 37
- Input Shaft Options 38
- Center of Gravity 41
- Installation 42
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