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Rockwell Automation Publication 150-QS003D-EN-P - November 2013 49
Operation and Troubleshooting Chapter 4
Using the Controller Status LED & Parameter Configuration
Module (Cat. No. 150-SM6) LEDs
When a Cat. No. 150-SM6 module is installed in one of the three control module
ports (7, 8, or 9) of the SMC-50 controller, additional LED diagnostic
information is provided beyond that of the Status LED.
The Cat. No. 150-SM6 module has four diagnostic/status LEDs to display an
LED code for each fault/alarm. When the SMC-50 controller’s Status LED
indicates the control module has faulted, the Cat. No. 150-SM6 module displays
a specific fault code. If the unit is not faulted but in an alarm condition, the Cat.
No. 150-SM6 module displays the alarm code. If the unit is neither faulted or in
an alarm condition, all 150-SM6 module LEDs will not be illuminated.
The Cat. No. 150-SM6 module > (<) LED indicates whether the fault/alarm is a
SMC-50 controller device fault/alarm or a motor fault/alarm. The on/off status
of the other three LEDs indicate the actual fault/alarm codes.
Depending on which SMC-50 controller port the Cat. No. 150-SM6 module is
installed into, the position of the LEDs (e.g., >, III, II, and I versus I, II, III, and
<) change. The table below displays the LED order when the Cat. No. 150-SM6
module is installed in port 7. When the Cat. No. 150-SM6 module is installed in
port 8 or 9, the order is reversed, but the LED diagnostic code is the same.
Table 22 - LED Order When Cat. No. 150-SM6 module is Installed in Port 7 of the
SMC-50
The displayed LED error code is either a fault or an alarm source. For example, if
the LED code is 1, Line Loss or Shorted SCR is either the fault or alarm. If a more
detailed display of the error code source is desired, a human interface module
(HIM) or configuration software is recommended.
The following table provides a list of fault and LED fault/alarm codes for the
SMC-50 controller and Cat. No. 150-SM6 Parameter Configuration Module.
LED On/Off State
LED Error Code > III II I
0
Red = SMC
Yellow = Motor
Off = No Fault or Alarm
Off Off Off
1OffOffOn
2 Off On Off
3 Off On On
4OnOffOff
5OnOffOn
6OnOnOff
7 OnOnOn