17
5.4
POTENTIAL MALFUNCTIONS OF THE VALVE
If the valve malfunctions, check the following points:
LED indicator light red = deviation alarm
Possible malfunction
Cause
Possible corrective action
Piston stroke deviates from
the output signal by >3% or
does not follow the input signal
within one second
Stiff movement or jamming of the
valve piston caused by
contamination of the operating
fluid
- Clean valve
- Check filtration in the oil
circuit
- Replace operating fluid
Contact problem of the
connection plug or the cabling
for the signal line
Faulty assignment or damage to
the connector or cable break
- Check contact points and
wiring
- Replace cable or connector
Under-voltage at the valve
Power supply unit failing to provide
sufficient supply voltage
- Check configuration of the
power supply unit in terms of
connected load
- Check cabling to the power
supply unit and cable length
Faulty input signal
The control’s nominal value signal
type does not correspond to the
valve’s expected current/voltage
input
- Adjust the control’s nominal
value signal to suit the valve
- Select a valve that matches
the control’s nominal value
signal
6
INITIAL START-UP OF THE VALVE
6.1
NOTICES REGARDING INITIAL START-UP OF THE VALVE
•
Use the valve exclusively to control the speed and pressure of consumers in hydraulic circuits.
•
There is some risk of leakage in the valve, which may cause movement at the drive.
•
The valve may heat up intensely during operation. Do not touch the valve during operation,
particularly the coils, as this may cause burns.
•
Actuating the pin on the front of the solenoid will cause uncontrolled movement of the drive.
E
N
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9
07.
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A
.
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