Rockwell Automation 440C Guardmaster 440C-CR30 Configurable Safety Relay User Manual - Manual (Page 103)

Rockwell Automation Publication 440C-UM001C-EN-P - November 2014 103
Chapter
15
Troubleshooting
Faults fall into two categories:
• Recoverable
• Nonrecoverable
Recoverable faults are those faults that can be corrected without having to cycle
the power to the CR30. Nonrecoverable faults require power cycling to recover
after the fault is corrected.
Recoverable Faults Recoverable faults can be cleared by eliminating the cause of the fault and cycling
the inputs that are associated with the fault. The output that is connected to an
input with that fault is switched off. The other non-affected outputs continue to
work.
Examples of recoverable faults include:
• SMF faults
• Cross loop
• Simultaneity faults
• Reset button fault
• Muting: Synchronization time exceed
• Muting time exceeded
• Sequence fault
LEDs Faults are indicated by the fault LED. If the fault LED is flashing red, a
recoverable fault has occurred. If the Fault LED is solid red, a nonrecoverable
fault has occurred.
Figure 121 - Fault LED