Pvpc Plug For External Pilot Control - Danfoss PVG 100 Service Manual

Service Manual
PVG 100 Component Troubleshooting
Failure mode
Does not work in either direction LED is green
Works in one direction (Assuming that the
manual control lever and the main spool moves
freely both directions)
Works intermittently (if LED is green it indicates a
long on/off
Works with no command from controller
Failure mode
Main spool moves slow, or not at all, in all
sections
38
PVG 100 Proportional Valves
Location: On the end of the main spool of the PVB.
Function: Convert an electrical command to move the main spool to a set position.
Cause
No control voltage from the electrical controller
Command pin wire in mating connector is
broken
Connector corroded
24 volt electrical actuator used on a 12 volt
system
No power from the battery
Power pin wire in mating connector is broken
Ground connection must be hard wired straight
from the battery or from the electrical controller
No control voltage from the electrical controller
Lack of voltage to actuator (Minimum voltage 11
volts for 12 volt system and 22 volts for 24 volt
system
Electrical actuator is defective
Loose connection between the electrical
actuator and controller
Electrical actuator is defective
Short in wiring harness
Fine contamination
Short in wiring harness

PVPC Plug for External Pilot Control

Description: Pilot oil supply from another pump.
Location: On the top of the PVP.
Function: Provides a hydraulic pilot supply to the valve stack.
Cause
External hydraulic pilot pressure is too low
11048807 • Rev BA • October 2014
Corrective action
Check voltage from the electrical controller
Resistance check (measures between pin 2 and
ground):
17 OHMs for 12 volt systems
63 OHMs for 24 volt systems
Repair broken wire
Replace PVE and mating connector - This
condition is caused by water ingression or
ground connection
Replace with the correct electrical actuator for a
24 volt system
Check power to electrical actuator
Repair broken wire
Repair ground connection
Ensure voltage from the electrical controller
exists for that direction
Check system voltage
Replace electrical actuator per spec. on the valve
Repair connector
Replace electrical actuator per spec. on the valve
Repair wiring harness
Replace the electrical actuator per valve spec.
and flush the complete system and fill with
filtered oil
Repair wiring harness
Corrective action
Check external hydraulic pressure from pilot
pump and/or restrictions