Troubleshooting

Difficult to install the contactor on a plate

Incorrect drilling dimension or not use of hang on function pin or screws

Follow the contactor installation instructions, TeSys Giga Contactor Mounting on Plate.

Difficult to install the overload relay on a plate

Incorrect drilling dimension

Follow the overload relay installation instructions, TeSys Giga Electronic Overload Relay Mounting on Plate.

Difficult to install auxiliary contact modules on the contactor

Cannot position well the driving pin or the locating features

Follow the auxiliary contact module installation instructions, Installation of the Auxiliary Contact Modules.

Contactor does not close and the Diagnosis LED on the control module flashes 2 times regularly

The control voltage is lower than 80 % of Ucmin

Check the control voltage.

Contactor does not close

Error in the wiring of the control circuit

Check the control wiring diagram, .

The magnetic circuit cannot close due to dust or mechanical issue

Remove the control module,Control Module Replacement , and clean the accessible parts with a dry cloth.

If the problem persists, contact your Schneider Electric field service representative.

Poles cannot close due to mechanical issue

Remove the switching modules, Switching Module Replacement, and clean the accessible parts with a dry cloth. Test manually the switching modules to detect if there is a blocking point.

If the problem persists, replace the switching modules,Switching Module Replacement.

Overload relay unexpected trip

Error in the protection settings

Check the protection settings, Current–Based Protection Functions.

Too high level of vibration on overload relay

Check the vibration environment.

Huge magnetic field in the environment of the overload relay

Add an external magnetic shield around the overload relay.

Overload relay manual reset does not work

Reset button is not fully pushed

Fully push Reset button again.

Cannot remove switching modules

Still some screws tightened

Check all the screws are untightened.

Difficult to change the switching modules

Sequence to remove cable, auxiliary contact modules, mid frame screw

Follow the switching module replacement instructions, Switching Module Replacement.

The Diagnosis LED on the control module blinks continuously

Control module internal malfunction detected

Replace the control module, Control Module Replacement

Overload relay motor ON LED blinking

Overload relay internal malfunction detected

Replace the overload relay.

The motor is supplied but the overload relay motor ON LED is OFF.

LED is out of order

Replace the overload relay.

The LED indicator on RDM module is steady orange or red.

Incorrect RDM module wiring or power supply

Properly connect the RDM module wiring and check the power supply.

See

The following settings on the client and the knobs on the RDM module are not consistent:

• Modbus client device setting of transmission mode and data encoding format

• Modbus server address

• Baud rate

• Parity

Keep the settings consistent.

If baud rate is in auto mode, ensure the baud rate in use is supported. See Modbus Communication Setting

The RDM module returns a Modbus exception code to the client.

The read and write requests from the client are not correct.

Check the Modbus Exception Code on Modbus client (PLC or HMI), and then:

• Select the supported function code.

• Set correct registers addresses and number of registers according to Modbus registers table.

• Set correct value for digital output configuration.

See Modbus Register Tables.

The RDM module returns 0x8000 (invalid data) to a read request from the client.

The read request concerns unused registers.

Check the read request from the client (PLC or HMI) and set correct registers addresses and number of registers according to Modbus registers table.

See Modbus Register Tables.