Honeywell Excel 800 SYSTEM Installation And Commissioning Instructions page 80

Troubleshooting
Analog Output Modules Troubleshooting
case Problem
1
All outputs always have
zero voltage
2
Unstable output voltage
Table 81 Failure modes of analog output modules
Binary Input Modules Troubleshooting
case Problem
1
Unexpectedly, all status
LEDs are always OFF
Table 82 Failure modes of binary input modules
Relay Output Modules Troubleshooting
case Problem
1
Unexpectedly, all outputs
are in unpowered position
Table 83 Failure modes of relay output modules
Floating Output Modules Troubleshooting
case Problem
1
Unexpectedly, all outputs
are in unpowered position
Table 84 Failure modes of floating output modules
A "Frequently Asked Questions and Troubleshooting" document is available via the Honeywell Technical Assistance Center
(TAC) or, for Honeywell employees, on the Intranet under:
EN1B-0375GE51 R0910
Possible causes
Manual override settings
Outputs are in safety position
Software problem
Internal undervoltage detection has been
activated
Incorrect grounding of actuators
Possible causes
Internal overload protection has been
activated
Possible causes
Improper manual override settings
Outputs are in safety position
Software problem
Internal undervoltage detection has been
activated
Possible causes
Improper manual override settings
Outputs are in safety position
Software problem
Internal undervoltage detection has been
activated
http://web.ge51.honeywell.de/tac
Remedy
Check manual override settings
►
Check communication
►
Power down and then power up
►
If problem persists, replace hardware
►
Replace hardware
►
Ground actuators individually (see
►
Fig. 69 on page 46)
Remedy
Power down and then power up
►
Remedy
Check manual override settings
►
Check communication
►
Power down and then power up
►
If problem persists, replace hardware
►
Replace hardware
►
Remedy
Check manual override settings to
►
check outputs
Check communication
►
Power down and then power up
►
If problem persists, replace hardware
►
Replace hardware
►
80
Excel 800