System Self-Diagnostic

Description

The LTMT main unit carries out a series of self tests to monitor:

• Correct internal functioning of the LTMT main unit.

• Correct functioning of the modules connected to the LTMT main unit.

• Communication with the modules connected to the LTMT main unit.

• LTMT main unit internal temperature.

The device internal error detected by the self tests are accessible from the LTMT main unit using the following interfaces:

• A PC running the TeSys Tera DTM embedded in a FDT container such as SoMove software.

• The LTMTCUF control operator unit.

• A PLC or DCS through the communication network.

The last 20 detected device internal error detected are recorded by the LTMT main unit. Refer to Device Internal Records.

In case of device internal error detected, refer to the troubleshooting part in the TeSys Tera Motor Management System Installation Guide – DOCA0356EN.

Device Internal Error Detected

The motor or heater is stopped or inhibited by the motor starter logic when the following device internal error detected:

• Sensor module communication error detected.

• Expansion unit communication error detected.

• Error detected during expansion unit initialization.

• Configuration error detected.

• Internal temperature is high.