Detecting Problems

Overview

The LTMR controller and the expansion module perform self-diagnostic checks at power-up and during operation.

Problems with either the LTMR controller or expansion module can be detected using

Power and Alarm LEDs on the LTMR controller,
Power and Input LEDs on the expansion module,
LCD Display on either a Magelis XBTN410 HMI device or a TeSys T LTMCU Control Operator Unit connected to the LTMR controller’s HMI port, or
SoMove with the TeSys T DTM running on a PC connected to the LTMR controller’s HMI port.

Device LEDs

The LEDs on the LTMR controller and expansion module can indicate the following problems:

	LTMR LED		LTME LED	Problem
Power	Alarm	PLC Alarm	Power
Off	Solid red	-	-	Internal trip
On	Solid red	-	-	Protection trip
On	Flashing red (2x per second)	-	-	Protection alarm
On	Flashing red (5x per second)	-	-	Load shed or rapid cycle
On	-	-	Solid red	Internal trip

Magelis XBT HMI Device

The Magelis XBTN410 HMI automatically displays information about a trip or alarm, including LTMR controller self-diagnostic trips and alarms, when it occurs.

For information about the display of trips and alarms when the HMI is used in a one-to-many configuration, see Trips Management in TeSys T LTMR Motor Management Controller User Guide.

LTMCU Control Operator Unit

The TeSys T LTMCU Control Operator Unit automatically displays information about a trip or alarm.

For more information, see Trips and Alarms Display in TeSys T LTMCU Control Operator Unit User’s Manual.

SoMove with the TeSys T DTM

SoMove with the TeSys T DTM displays a visual array of active trips and alarms, including LTMR controller self-diagnostic trips and alarms, when these trips occur.

For information about this display of active trips and alarms, refer to the TeSys T DTM for SoMove FDT Container Online help.