Relay test selector, Trusted, Module t8442 – Rockwell Automation T8442 Trusted TMR Speed Monitor User Manual
Page 31
Trusted
TM
Module T8442
Issue 8 Apr 10
PD-T8442
31
3.1.20. Relay Test Selector
This selector field can be set globally for the module.
The selection in this field configures the behaviour of the automatic relay tests.
There are three behaviour types:
•
Automatic relay testing disabled.
•
A test time interval may be selected. Relay contact transition tests are performed on each
quadrant of the output structure at the interval specified. Background coil testing is enabled in
this mode.
•
Only relay coil testing enabled. Relay contact transition tests are not performed in this mode.
Table 5 shows each of the behaviours available for selection.
The time intervals available for selection determine the configured rate at which the output relay
quadrants are automatically tested.
The default behaviour is for automatic relay testing to be disabled.
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