Rockwell GuardLogix, Safety Application Manual

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7
Publication SAFETY-AT017B-EN-P-July 2011
Reaction to Faults
Based on the wiring and safety module configuration shown in this
application example, this section details how the safety module responds
to line faults incurred between the safety outputs and the PowerFlex 70
drive:
Channel-to-channel Short
Channel Start Fault Immediate Reaction Immediate Detection
P HI ch-ch LO Yes*
M HI ch-ch LO Yes*
Short to 24V
Channel Start Fault Immediate Reaction Immediate Detection
P HI Short HI Undetectable
M HI HI
P HI LO
M HI Short LO Yes*
Short to 0V
Channel Start Fault Immediate Reaction Immediate Detection
P HI Short LO Yes*
M HI LO
P HI HI
M HI Short HI Undetectable
Wire OFF
Channel Start Fault Immediate Reaction Immediate Detection
P HI off LO Yes**
M HI LO
P HI LO
M HI off LO Yes**
* These faults result in the output status going LO. The error remains for
the duration of the Output Error Latch Time configured in the module
properties.
** These faults result in the output status remaining HI. The feedback of
the ROUT instruction detects this type of fault.