Festo VPPI D Series User Manual

11.2 Fault Clearance
Error description Cause Remedy
Operating voltage not applied. Check the operating voltage
connection.
No setpoint voltage. Check the controller and con-
nection.
Valve does not respond.
Working temperature is too
high. Valve is in temperature
shut-off.
Switch off the valve, let it cool
down and restart.
Reduce ambient temperature
and / or temperature of medi-
um.
Valve normally open:
The working pressure at (2) falls
to the level at (3) (ambient pres-
sure or vacuum).
Cable break setpoint input Check connection to setpoint
generator.
Replace supply cable.
Valve normally closed:
The working pressure at (2)
deviates upwards or downwards
from the setpoint value (work-
ing pressure is neither pressur-
ised nor exhausted).
Cable break setpoint input Check connection to setpoint
generator.
Replace supply cable.
Setpoint value not reached. Input pressure at (1) is too low. Increase input pressure at (1).
Maintain permissible maximum
operating pressure
è 14 Technical Data.
Tab. 11 Fault Clearance
12 Disassembly
1. Switch off compressed air supply.
2. Specify setpoint value 0bar.
3. Switch off operating voltage.
4. Remove electrical connecting cables.
5. Remove compressed air lines.
6. Dismantle the product.
Disassembly
22 Festo — VPPI-...-D — 2019-12

Festo VPPI D Series Specifications

General

Brand	Festo
Model	VPPI D Series
Category	Controller
Language	English