System Settings

WARNING
UNINTENDED EQUIPMENT OPERATION The application of this product requires expertise in the design and programming of control systems. Only personnel with such expertise should be allowed to program, install, configure, alter and apply this product. Follow all local and national safety codes and standards. Make sure FLC is to be maintained at same as FLC motor rating. Failure to follow these instructions can result in death, serious injury, or equipment damage.

WARNING

UNINTENDED EQUIPMENT OPERATION

The application of this product requires expertise in the design and programming of control systems. Only personnel with such expertise should be allowed to program, install, configure, alter and apply this product. Follow all local and national safety codes and standards.
Make sure FLC is to be maintained at same as FLC motor rating.

Failure to follow these instructions can result in death, serious injury, or equipment damage.

The system settings can be set up using 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.

Parameter Setting

Parameter name	Setting range	Default value
Phase CT Primary	1–1000 A in step of 1 A	1 A
Phase CT Secondary	1 A or 5 A	1 A
Voltage Nominal	110.0–690.0 V	415 V
Nominal Frequency	50 Hz 60 Hz	50 Hz
Phase Rotation	L123 L132	L123
Voltage Input	Disable Enable	Disable
Full Load Current (IFLC)*	0.1–1000 A in step of 0.1 A	2.5 A
Phase CT Secondary Passes	1–10 in step of 1	1
Test Mode	Disable Enable	Enable
Bypass interlocks During Test*	No Yes	No

Full Load Current (IFLC)

Set the Full load current as per the motor current ratings. Many protection parameters are set as a multiple of the full load current (IFLC).

If the motor current is measured directly by the LTMTCT/LTMTCTV sensor module, the IFLC setting range is defined by the LTMTCT/LTMTCTV sensor module type.

Reference	Sensor module	IFLC setting range
LTMTCT3T	LTMTCT horizontal module	0.3–3 A
LTMTCTV3T	LTMTCTV horizontal module	0.3–3 A
LTMTCT25T	LTMTCT horizontal module	2.5–25 A
LTMTCTV25T	LTMTCTV horizontal module	2.5–25 A
LTMTCT100T	LTMTCT horizontal module	10–100 A
LTMTCTV100T	LTMTCTV horizontal module	10–100 A
LTMTCTV3UT	LTMTCTV horizontal module for UL applications	0.3–3 A
LTMTCTV25UT	LTMTCTV horizontal module for UL applications	2.5–25 A
LTMTCTV100UT	LTMTCTV horizontal module for UL applications	10–100 A

If the motor current is measured by an external current transformer with Phase CT secondary or 1 A or 5 A and a LTMTCT3/LTMTCTV3 sensor module, the IFLC setting range is defined by:
- IFLCmin (A) = (Phase CT primary/ Phase CT secondary) x 0.3
- IFLCmax (A):
  - For CT secondary 1 A = Phase CT primary X 2
  - For CT secondary 5 A = (Phase CT primary/ Phase CT secondary) x 3
If the motor current is measured by an external current transformer with CT secondary 5 A and a LTMTCT25/LTMTCTV25 sensor module, IFLC setting range is defined by:
- IFLCmin (A) = Phase CT primary x 0.5
- IFLCmax (A) = Phase CT primary x 2

Phase CT

Set the Phase CT primary and Phase CT secondary parameters:

To 1 if the motor current is measured directly by the LTMTCT/LTMTCTV sensor module.
Or with the characteristics of the external current transformers used to measure the motor current.

Set always the Phase CT secondary passes to 1 (default value).

Voltage Nominal

The nominal voltage parameter is applicable only for LTMTCTV sensor modules.

For three phase motor, set the nominal voltage (line to line voltage) as per the motor rating.

For single phase motor, set the nominal voltage (line to neutral) as per the motor rating.

Voltage Input

The voltage input parameter is applicable only for LTMTCTV sensor modules.

If the voltage input parameter is disabled (default value), TeSys Tera system will not provide voltage protections and measurements.