CONTROLLER
48
| MVE User Manual (710-17074-00G)
3D – Auto-Stop Time
Range:
00:01 - 24:00 (hours:minutes)
Default:
1 minute
Description:
Sets the time for the soft starter to auto-stop, in 24 hour clock format.
4 Protection Settings
These parameters determine when the soft starter's protection mechanisms will activate. The activation point for each protection
mechanism can be set to suit the installation.
The soft starter responds to protection events by tripping, warning, or writing the event to the event log. The response is
determined by the Protection Action settings. The default response is a trip.
CAUTION
The protection settings are vital for safe operation of the soft starter and motor. Defeating the protection may
compromise the installation and should only be done in the case of emergency.
4A – Excess Start Time
Excess start time is the maximum time the MVE will attempt to start the motor. If the motor does not transition to Run mode within
the programmed limit, the starter will trip. Set for a period slightly longer than required for a normal healthy start. A setting of 0
disables excess start time protection.
Range:
0:00 - 2:00 (minutes:seconds)
Default:
20 seconds
Description:
Set as required.
4B – Excess Start Time-2
Range:
0:00 - 2:00 (minutes:seconds)
Default:
20 seconds
Description:
Set as required.
4C – Undercurrent
Range:
0% - 100%
Default:
20%
Description:
Sets the trip point for undercurrent protection, as a percentage of motor full load current. Set to a level
between the motor's normal working range and the motor's magnetising (no load) current (typically 25% to
35% of full load current). A setting of 0% disables undercurrent protection.
4D – Undercurrent Delay
Range:
0:00 - 4:00 (minutes:seconds)
Default:
5 seconds
Description:
Slows the MVE's response to undercurrent, avoiding trips due to momentary fluctuations.
4E, 4F – Instantaneous Overcurrent
The MVE can be configured to trip if the average current of all three phases exceeds a specified level while the motor is running.
Refer to
4U, 4V – Instantaneous Overcurrent Stage 2
on page 50 for more information and examples.
Parameter 4E
Instantaneous Overcurrent
Range:
80% - 600% FLC
Default:
400%
Description:
Sets the trip point for instantaneous overcurrent protection, as a percentage of motor full load current.
Parameter 4F
Instantaneous Overcurrent Delay
Range:
0:00 - 1:00 (minutes:seconds)
Default:
0 second
Description:
Slows the MVE's response to overcurrent, avoiding trips due to momentary overcurrent events.
NOTE
This protection is only active during run and must be coordinated with
Instantaneous Overcurrent Stage 2
(parameters
4U, 4V).
