Troubleshooting
A-4
Appendix 3
535-PROF User's Manual
Defective power source
Improper wiring
Blown in-line fuse
Unit not inserted in case properly; or, screws
have not been tightened
Input jumper selection improperly set
Input range improperly selected in software
Reverse polarity
If controller powered, improperly wired
Loop power module not installed
Defective transmitter
Transmitter signal out of range
Defective thermocouple
Input jumper selection improperly set
Wrong TC type selected in software
Improper wiring
Defective RTD
Input jumper selection improperly set
Improper wiring
Output wiring and module location do not match
If SSR, SSR Drive of Milliamp output, jumpers
J1, J2 and J3 are not set properly
Software configuration does not match
hardware
PID values not set properly
Input sensor signal is not connected or valid
Resetting action due to electrical noise on
powerline
PID values not set properly
APPENDIX 3
TROUBLESHOOTING
Check power source and wiring
Correct wiring
Check wiring, replace fuse
Remove unit from case (and remove
bezel screws), then reinsert unit and
properly tighten screws.
Move jumper to proper location
Select proper range
Check and correct sensor wiring
Check and correct wiring
Install module
Replace transmitter
Select proper range in software
Replace thermocouple
Select Proper input
Select proper thermocouple type in
software
Wire properly
Replace RTD
Move jumper connector to proper
location
Wire properly
Check and correct wiring or module
location
Set jumper connector to proper location
Reconfigure software to match hardware
Set PID values properly
See PV LOST message
Filter power line
Retune controller
SYMPTOM
PROBLEM
SOLUTION
Display will not light up
Improper/Lost PV reading
• Voltage/current
Improper/Lost PV reading
• Thermocouple
Improper/Lost PV reading
• RTD
No control output
Can’t switch to auto control
Erratic display