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Rockwell Automation SMC Dialog Plus User Manual

Rockwell Automation SMC Dialog Plus
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Diagnostics
9-3
Fault Definitions
Power Loss
Power loss indicates that an input power phase is not present. The
controller’s LCD display will identify the missing phase.
Note: If all three phases are absent when a start command is issued,
the LCD will display “Starting” without motor rotation.
Line Fault
Line fault with the affected phase displayed identifies three possible
pre-start conditions.
•Phase loss
Load loss
Shorted SCR
Line fault with no phase indication is displayed when one of the
following conditions occurs while the SMC Dialog Plus controller is
in the run mode.
•Phase loss
Load loss
Shorted SCR
Phase Reversal
Phase reversal is indicated when the incoming power to the SMC
Dialog Plus controller is in any sequence other than ABC. This pre-
start protective feature can be disabled.
Overvoltage and Undervoltage Protection
Overvoltage and undervoltage protection are user-defined as a
percentage of the programmed line voltage. The SMC Dialog Plus
controller continuously monitors the three supply phases. The
calculated average is then compared to the programmed trip level.
Phase loss, overvoltage, and undervoltage protection are disabled during braking operation.

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Rockwell Automation SMC Dialog Plus Specifications

General IconGeneral
BrandRockwell Automation
ModelSMC Dialog Plus
CategoryController
LanguageEnglish

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