Replacing Modules 197
Chapter 5 Fault and Alarm Indicators
Replacing a Communication Module
If the fault indicator of a Communication Module light is blinking, the diagnostics
have detected a module failure.
!
CAUTION
The CM does not have hot-spare capability.
▼ To replace a faulty CM:
1
If available, make a note of the diagnostic message, model, and serial numbers.
2 Before replacing a CM, observe the important instructions provided in the
section called “Guidelines for Replacing Modules” on page 195.
3 Detach all communication cables from the faulty module.
4 On the faulty CM, rotate the lock lever counter-clockwise until the module
ejects from the baseplate.
Note If communication has not been disrupted by the fault, removing the module
disrupts communication until the module is replaced. If you have a redundant CM,
replacing the faulty module does not affect communication on the redundant CM.
5 Insert the replacement CM and rotate the lock lever clockwise to draw the
module into the baseplate.
The Pass indicator should go on within one minute.
The Active indicator should go on within one to two minutes. Then the Active
indicator on the faulty module goes off.
If the module is not properly seated, the Lock indicator stays on. The Active
indicator does not go on until the CM is properly seated and locked.
6 Re-attach all communication cables to the CM.
7 Contact the Triconex Customer Response Center to obtain a returned material
authorization (RMA) number.
8 Return the module to Triconex for repair.
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