GEM 651 - 16 Inspection and Servicing; Troubleshooting; Fault Clearance

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651
Set value max
LED Symbol LED Symbol
OPEN
G
CLOSED
H
ERROR
H
POWER
G
15.6 Troubleshooting / Fault clearance
Error Error message Error cause Effect Error clearance
No. 1
Set value
> 20.5 mA / 10.25 V
Set value signal
> 20.5 mA / 10.25 V
Process valve
is vented
Check set value signal
No. 2
Set value
< 3.5 mA
Set value signal
< 3.5 mA
Process valve
is vented
Check set value signal
No. 3
Positioner not
initialised
Device was not
initialised
No function Carry out initialisation
No. 4
Positioner not
calibrated
Device faulty No function Send to GEMÜ for repair
No. 5 Device error
a) Pneumatic air
supply missing
b) Leakage in
pneumatic system
Initialisation
failure
Check
a) pneumatic air supply
b) pneumatic connections
Warning Error message Error cause Effect Error clearance
No. 1
Positioner works with
lower quality
During initialisation,
the internal valves
could not be
measured exactly
Control is not
optimized
Check for
a) Leakage of the process valve
b) Correct function of process valve
c) Unstable medium pressure during
initialisation (if possible turn off
media pressure)
16 Inspection and servicing
WARNING
The equipment is subject to pressure!
® Risk of severe injury or death!
G Only work on depressurized plant.
CAUTION
Hot plant components!
® Risk of burns!
G Only work on plant that has
cooled down.
CAUTION
G Servicing and maintenance work must
only be performed by trained personnel.
G GEMÜ shall assume no liability
whatsoever for damages caused
by improper handling or third-party
actions.
G In case of doubt, contact GEMÜ before
commissioning.
1. Use appropriate protective gear as
specifi ed in plant operator's guidelines.
2. Shut off plant or plant component.
3. Secure against recommissioning.
4. Depressurize the plant or plant
component.
The operator must carry out regular visual
examination of the valves dependent on
the operating conditions and the potential