Troubleshooting and Diagnosis
2
017-
06
53
5.5
Initialization Run
Auxiliary valve not
controlled
The reference value
specified by the
DO function block has
the status BAD or
UNCERTAIN.
Check reference value
and correct it, if
necessary.
See chapter 4.5.10
Transducer block is in
"Out of service" mode.
Set transducer block
to "Auto" mode.
See chapter 5.4
Hardware or lead
error.
Check diagnostic
messages.
See chapter 5.4
Simulation is switched
ON in function block.
Switch OFF
simulation.
See chapter 3.2.4
Resource Block
parameters, see
chapter 6
Problem
Cause
Solution
Further Information
Message
Cause
Solution
Error before start
Valve is actuating.
Start initialization run again as
soon as the valve has reached
the set position.
Lead breakage or short circuit at
valve or sensor.
Check wiring of sensors and
valve.
Valve is not in final position.
■
Check PFCs.
■
Check auxiliary power.
■
Check drive.
Resource block is in "Out of
Service" mode.
Set resource block into "Auto"
mode.
Error while running
The PFCs have displayed an
unexpected valve position. The
expected position is open -
intermediate - closed and vice
versa.
Check PFCs and contacts.
Breakaway time is longer than
1 min.
■
Auxiliary power too low.
■
Friction too high.
■
Drive or pilot valve defective.
■
System pressure too high.
■
Check auxiliary power.
■
Check friction.
■
Check drive and pilot valve.
■
Checks system pressure.
Transit time is longer than 3 min.
■
Auxiliary power too low.
■
Friction too low.
■
Drive or pilot valve defective.
■
Check auxiliary power.
■
Check friction.
■
Check drive and pilot valve.
The lead or short circuit
monitoring has detected an error.
Check wiring of sensors and
valve.
For more information, see
chapter 5.1 and see chapter
