Flowserve StarPac 3 - Manual (Page 55)

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StarPac Intelligent Control System FCD VLENIM0066-05 04/14
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23 StarPac 3 System Troubleshooting
Table XXX: StarPac 3 System Troubleshooting Chart
Failure Probable Cause Corrective Action
Local display not on 24 VDC not on or set correctly Verify power supply is outputting 24 VDC (termi-
nals 1 and 10)
Incorrect wiring polarity Check wiring for correct polarity
Interface connections on bottom are
not correct Make sure connections are correctly aligned and
fully plugged in
Erratic communications Multiple units have same address on
network line Change each unit to a unique, sequential address
(refer to Address Setting in Maintenance section)
Proper polarity not maintained Check all network connections for correct positive
and negative connections
Individual units not properly wired Begin with shortest RS-485 run, checking polarity
and communication; continue checking units
throughout network
Termination jumpers not installed Install termination jumper on most distant device.
Remove jumper from all other devices
The unit does not respond to analog
commands Unit still in test mode Put unit in auto or manual mode. Select analog
input
StarPac 3 data is not correct Improper configuration file was
loaded onto system Find the correct file for this system and load onto
the unit
Valve position reading is not correct Calibration not complete Perform Quick-Cal procedure
Sticking or hunting operation of the
positioner Contamination of the spool valve
Assembly. Damaged or broken poten-
tiometer or hall effect wiring Check air supply for proper filtering and mee-
ting ISA Specification S7.3. Clean spool valve
assembly with a non residue cleaner. Inspect
wiring for damaged shielding or loose connectors
or terminals