Function Parameter
The function parameter of each protection can be set separately to define the action of the protection function on the system.
|
Function parameter value |
Description |
|---|---|
|
Disable |
The protection function is disabled. |
|
Alarm |
The protection function is used to signal the alarm conditions. The alarm is not latched and it is automatically reset when the alarm conditions have disappeared. |
|
Alarm + Trip |
The protection function is used to signal the alarm conditions and to stop the motor in the trip conditions. |
|
Trip |
The protection function is used to stop the motor in the trip conditions. The trip conditions are defined in the description of each protection function. The trip is latched and must be reset according to the Reset mode set for protection function. |
Detection of Alarm
LTMT main unit detects the alarm:
-
After the parameter value crosses the alarm threshold.
-
In 30 ms of time after the parameter value crosses the alarm threshold.
Detection of Pickup and Trip
LTMT main unit detects:
-
Pickup, after the parameter value crosses the pickup threshold.
-
Pickup in 30 ms of time, after the parameter value crosses the pickup threshold.
-
Trip, after the parameter value crosses the pickup threshold and remain above the pickup threshold for configured time delay.