Inhibit Status

Inhibit cause

Description

Validity

No Voltage Inhibit

This inhibit cause is set if TeSys Tera system measures the three-phase voltage below 10% of nominal voltage.

Valid for all motor starter types.

This inhibit status is applicable only for the LTMTCTV sensor module and if the Voltage input setting is enabled in system settings.

Under Voltage Inhibit

This inhibit cause is set if TeSys Tera system detects under voltage pickup/alarm.

Valid for all motor starter types.

This inhibit status is applicable only for the LTMTCTV sensor module and if the Voltage input setting is enabled in system settings.

Trip Inhibit

This inhibit cause is set if TeSys Tera system is in trip condition.

Valid for all motor starter types.

Thermal Inhibit

This inhibit cause is set if the thermal memory is greater than the start inhibit level setting of the thermal overload protection. This inhibit cause is also set if the pause time (if pause time function is enabled), or the cool down time (if cool down time function is enabled) is active.

Valid for all motor starter types.

Maximum Starts Inhibit

This inhibit cause is set if:

• Maximum start protection is enabled.

• The maximum starts are performed as per the configured setting or if time between the two starts period is not elapsed.

Valid for all motor starter types.

Interlock 1-12 Inhibit

This inhibit cause is set if:

• DI of TeSys Tera system is configured as Interlock.

• DI status is detected as OFF.

Valid for all motor starter types.

Local DI Stop Inhibit

This inhibit cause is set if:

• Local DI stop is configured in one of the DI settings.

• Local DI stop status is ON and Local DI stop is enabled in active mode.

Valid for all motor starter types.

Remote DI Stop Inhibit

This inhibit cause is set if:

• Remote DI stop is configured in one of the DI settings.

• Remote DI stop status is ON and Remote DI stop is enabled in active mode.

Valid for all motor starter types.

Forced Stop Inhibit

This inhibit cause is set if

• Forced Stop is configured in DI settings.

• Forced Stop status is detected as ON.

Valid for all motor starter types.

Communication Stop Inhibit

This inhibit cause is set if, communication stop status is present and communication stop is enabled in active mode.

Valid for all motor starter types.

This inhibit status is applicable only, if the communication start input setting in starter setting is configured as momentary.

Anti-backspin Inhibit

This inhibit cause is set if Anti-backspin timer function is enabled and Anti-backspin timer is active after motor stop. Refer to Anti-Backspin Timer.

Valid for all motor starter types.

Direction Change Inhibit

In reverse starters, this inhibit cause is set if the Interlock timer is active after motor stops.

Valid for the reversing motor starter types.

Custom Stop Inhibit

This inhibit cause is set if:

• Any input is configured to Custom stop input of temporary register 29.

• The Custom stop input status is ON and Custom stop input is enabled in active mode.

Valid for all motor starter types.

Firmware Update Inhibit

When firmware device update is in progress.

Valid for all motor starter types.