Orion System Dual Digital Module - Manual (Page 13)

Technical Guide
Dual Digital Module
13
LED Diagnostics
“PWR” LED: When the Dual Digital Module is powered up, the PWR
LED (located below the address switches) should light up and stay on
continuously. If it does not light up, check to be sure that the power wir-
ing is connected to the board, the connections are tight, and the VCM-X
Modular series controller is powered. If after making all these checks,
the PWR LED does not light up, the module is probably defective.
“COMM” LED: The COMM LED lights up to indicate Communica-
tions between the module and the VCM-X Modular series controller. If
the COMM LED does not blink, then communications have not been
established. Check the connection between the VCM-X Modular Con-
troller, the VCM-X Modular E-BUS Controller, the E-BUS Distribution
Module, and the Dual Digital Module.
“STAT” LED: As previously described, this LED will blink out the
operation mode that the Dual Digital Module is operating under. When
the board is fi rst powered up, the STAT LED will do the following:

Light up

Blink out status code every ten seconds to indicate
controller status
“ALARM” LED: As previously described, this LED will blink on and
off to indicate alarms and diagnostics.
Troubleshooting
Other Checks
NOTE: The Dual Digital Module contains no user-serviceable
parts. Contact qualifi ed technical personnel if your mod-
ule is not operating correctly.