AuCom MVE Series User Manual page 45

PROGRAMMABLE PARAMETERS
4C – Undercurrent
Range: 0% - 100%
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)
Description: Slows the MVE's response to undercurrent, avoiding trips due to momentary fluctuations.
4E – Instantaneous Overcurrent
The MVE can be configured to trip if the average current of all three phases exceeds a specified level while the motor
4U, 4V – Instantaneous Overcurrent Stage 2
is running. Refer to
Range: 80% - 600% FLC
Description: Sets the trip point for instantaneous overcurrent protection, as a percentage of motor full load
current.
4F Instantaneous Overcurrent Delay
Range: 0:00 - 1:00 (minutes:seconds)
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
(parameters 4U, 4V).
4G – Phase Sequence
Options: Any Sequence
Positive Only (default)
Negative Only
Description: Selects which phase sequences the soft starter will allow at a start. During its pre-start checks, the
starter examines the sequence of the phases at its input terminals and trips if the actual sequence
does not match the selected option.
4H – Current Imbalance
Range: 10% - 50%
Description: Sets the trip point for current imbalance protection.
4I – Current Imbalance Delay
Range: 0:00 - 4:00 (minutes:seconds)
Description: Slows the MVE's response to current imbalance, avoiding trips due to momentary fluctuations.
NOTE
The MVE will display a Current Imbalance trip only when phase loss at the supply terminals occurs
during Run mode. When a phase loss occurs during other modes of operation, the MVE will trip on Motor
Connection.
4J – Frequency Check
Options: Do Not Check
Start Only
Start/Run
Run Only (default)
Description: Determines when and if the starter will monitor for a frequency trip.
4K – Frequency Variation
Options: ± 2 Hz
± 5 Hz (default)
± 10 Hz
± 15 Hz
Description: Selects the soft starter's tolerance for frequency variation.
44
| MVE User Manual (710-17074-00H)
Default: 20%
Default: 5 seconds
on page 45 for more information and examples.
Default: 400%
Default: 0 second
Instantaneous Overcurrent Stage 2
Default: 30%
Default: 5 seconds