Rockwell Automation AADvance Controller Troubleshooting and Maintenance Manual - Manual (Page 17)

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Document: 553634
(ICSTT-RM406F_EN_P) Issue: 089:
2-3
1) Open the fuse cover on each termination assembly to inspect the fuses.
2) Look for signs of overheated, damaged or incorrectly seated fuses.
Check Wiring Terminals
To check the wiring terminals do the following:
 Inspect the field, power and network wiring and look for any evidence of physical
stress such as chafing.
 Tighten terminal screws to avoid open circuits causing trips.
Note: For controller power and field wiring terminals, apply a minimum tightening
torque of 0.5 Nm (0.37 ft lb) to the terminal screws. For serial connections and
the processor alarm, apply a minimum tightening torque of 0.22 Nm (0.16 ft lb) to
the terminal screws.
Check Seating of Plug-in Components
To check the seating of plug-in components, do the following:
 Examine the AADvance controller assemblies and make sure all plug-in items,
including cable assemblies and base unit bus connectors, are correctly seated.
Check Physical Condition and Environmental Conditions
To check the physical condition of the controller and the environmental conditions, do the following:
 Examine the AADvance controller assemblies for contamination, corrosion,
dampness and dust.
 Look for unauthorised modifications and observable deterioration such as missing
covers, open wires and damaged insulation.
 Make sure that local ventilation and air conditioning systems are operating
correctly.