Download SMC-50 Solid-State Motor Controller User Manual

Chapter
4
Protection & Diagnostic Functions
Overview
The SMC-50 provides both diagnostic and protection functions. These
functions are in the form of user-configured parameters which provide motor and
starter Alarms and Faults. Each configurable Alarm and Fault can be individually
enabled or disabled. In addition, many Alarms and Faults have a user defined time
delay available to help limit nuisance tripping. A Fault condition results in a
controller shutdown (motor stops). An alarm can be used to alert an operator to a
pending fault. Motor and starter faults can be individually configured for
automatic reset/restart after configuring the number of restart attempts and
restart time delay. Restart attempts and restart delay are universal to all faults. See
the Auto Restart from Fault section in this chapter for additional details.
A multi-colored (red, green, amber) STATUS LED is located on the front of the
SMC-50 directly below the bezel/pocket for the 20-HIM-A6.
Figure 75 - Controller Status LED
L1/1
L2/3
STATUS
L3/5
PUSH
TO
RESET
HOLD
TO
TEST
STATUS
Controller
Status LED
T1/2
T2/4
T3/6
LED Display
Fault Condition
Solid RED
NON-resettable fault has occurred
Flashing RED
Resettable fault has occured
Additional diagnostic LEDs are located on the optional Bulletin 150-SM6
Parameter Configuration Module (PCM). This module provides simple and
limited parameter configurations. For additional diagnostic LED information,
see Chapter 9, Diagnostics.
Rockwell Automation Publication 150-UM011B-EN-P - January 2013
103