Manual

Publication GMSI10-UM015B-EN-E - June 2011
Installing the XM Electronic Overspeed Detection System 41
LED Indicators
Each XM module has indicators to help you troubleshoot any problems with
your XM EODS. The LED indicators are located on top of the module as
illustrated in Figure 2.18.
Figure 2.18 LED Indicators
LED Indicators for the XM-442 Module
The XM-442 module has three LED indicators, which include a module status
(MS) indicator and a status indicator for the Alarm and Shutdown relays.
The following tables describe the status indicators for XM-442 module.
Module Status (MS) Indicator
Shutdown and Alarm Indicator
DUAL SPEED
1440-SPD02-01RB
VOTED EODS RELAY
1440-REX03-04RG
Module Indicators
Color State Description
No color Off No power applied to the module.
Green Solid Module operating normally.
Red Solid An unrecoverable fault has occurred. The module may
need to be repaired or replaced.
Color State Description
Red Off On-board relay is not activated.
Solid On-board relay is activated.