Verifying System Wiring - TeSys T User Guides

Overview

After all required and optional parameters have been configured, be sure to check your system’s wiring, which can include:

Motor power wiring
LTMR controller wiring
External current transformer wiring
Diagnostic wiring
I/O wiring

Motor Power Wiring

To verify the motor power wiring, check the following:

Look At...	Action
The motor nameplate	Confirm that the motor generates current and voltage within the ranges of the LTMR controller.
The power wiring diagram	Visually confirm that the actual power wiring matches the intended power wiring, as described in the power wiring diagram.
The list of trips and alarms in SoMove with the TeSys T DTM or the LCD display of the HMI device	Look for any of the following trips or alarms: Overpower Underpower Over power factor Under power factor
The list of all or read only parameters in SoMove with the TeSys T DTM or the scrolling HMI display of the HMI device	Look for unexpected values in the following parameters: Active power Reactive power Power factor

Control Circuit Wiring

To verify control circuit wiring, check the following:

Look At...	Action
The control wiring diagram	Visually confirm that the actual control wiring matches the intended control wiring, as described in the control wiring diagram.
The LTMR controller Power LED	If the LED is off, the LTMR controller may not be receiving power.
The LTMR controller HMI LED	If the LED is off, the LTMR controller may not be communicating with the LTMCU or the PC running SoMove.
The LTME expansion module Power LED	If the LED is off, the LTME expansion module may not be receiving power.

Current Transformer Wiring

Verify the load current transformer wiring and, if the application includes external load current transformers, also verify that wiring by checking the following:

Look At...	Action
The external CT wiring diagram	Visually confirm that the actual wiring matches the intended wiring, as described in the wiring diagram.
The following load CT parameter settings, using SoMove with the TeSys T DTM: Load CT Ratio Load CT Primary Load CT Secondary Load CT Multiple Passes	Confirm that the Load CT Ratio parameter, or the combination of Load CT Primary and Load CT Secondary parameters accurately reflect the intended load CT ratio. Visually confirm that the Load CT Multiple Passes parameter accurately reflects the number of passes the wiring makes through the LTMR controller’s embedded CT windows.
The following load motor parameter setting, using SoMove with the TeSys T DTM: Motor Phases	Visually confirm that the motor and LTMR controller are wired for the number of phases set in the Motor Phases parameter.
The following load motor parameter setting, using either SoMove with the TeSys T DTM or the LCD display of the HMI device: Motor Phases Sequence	If the motor is a three-phase motor, visually check that the phase wiring sequence matches the Motor Phases Sequence parameter setting.

Diagnostic Wiring

Verify the wiring for any motor temperature sensing device or external ground current sensor, if the application includes these devices, by checking the following:

Look At...

Action

The wiring diagram

Visually confirm that the actual wiring matches the intended wiring, as described in the wiring diagram.

The external ground CT specifications

- and -

The following ground CT parameter settings, using SoMove with the TeSys T DTM:

Ground CT Primary
Ground CT Secondary

Confirm that the combination of Ground CT Primary and Ground CT Secondary parameters accurately reflect the intended ground CT ratio.

The motor temp sensor specifications

-and -

The following parameter setting, using either SoMove with the TeSys T DTM or the LCD display of the HMI device:

Motor Temp Sensor

Confirm that the motor temp sensor actually employed is the same sensor type as set in the Motor Temp Sensor parameter.

I/O Wiring

Verify the wiring for any I/O connections by checking the following:

Look At...	Action
The wiring diagram	Visually confirm that the actual wiring matches the intended wiring, as described in the wiring diagram.
The AUX1 (Run 1), AUX2 (Run 2), and Stop buttons on the HMI device - and - The following parameter setting, using either SoMove with the TeSys T DTM or the LCD display of the HMI device: Control Local Channel Setting	Confirm that each command performs the intended start or stop function, when control is via the terminal strip or the HMI port.
The Reset button on the HMI device - and - The following parameter setting, using either SoMove with the TeSys T DTM or the LCD display of the HMI device: Thermal Overload Trip Reset	Confirm that the HMI can command a manual trip reset, when control is set to manual.
The PLC, if the LTMR controller is connected to a network - and - The following parameter setting, using either SoMove with the TeSys T DTM or the LCD display of the HMI device: Thermal Overload Trip Reset	Confirm that the PLC can command the intended start, stop and remote reset functions.