Emerson Rosemount OCX8800 Instruction Manual page 202

Instruction Manual
IM-106-880C, OI
Line Voltage High (AC power line voltage above maximum, > 278 VAC)
Probable Cause
High noise or voltage fluctuations in power
supply
Electronics package failure
Htr Relay Failed (Heater relay failure)
Probable Cause
High noise or voltage fluctuations in power
supply
Electronics package failure
Out Brd Failure (Output board
failure)
Probable Cause
Electronics package failure
Fault
Isolation
Recommended Corrective Action
Check power supply for line noise or voltage fluctuations. Install power line filter
kit (PN 6A00171G01) or high quality line filter for input power.
Check power supply voltage and compare with line voltage. Replace electronics
package if they do not agree within 5%.
Recommended Corrective Action
Check power supply for line noise or voltage fluctuations. Install power line filter
kit (PN 6A00171G01) or high quality line filter for input power.
Replace electronics package.
Recommended Corrective
Action
Replace electronics package.
Fault Isolation
April 2017
17
5