Danfoss VLT MCD 600 Operating Manual page 130

VLT® Soft Starter MCD 600
Operating Guide
-
Parameter 5-13 Overpower.
-
Parameter 5-14 Overpower Delay.
- Parameter 6-9 Overpower.
11.2.37 Overvoltage
Cause
There has been a voltage surge on the mains. Causes can include problems with a transformer tap regulator or off-loading of a large
transformer load.
Troubleshooting
• Check the following parameters:
-
Parameter 5-9 Overvoltage.
-
Parameter 5-10 Overvoltage Delay.
-
Parameter 6-7 Overvoltage.
11.2.38 Parameter Out of Range
Cause
This trip is not adjustable.
• A parameter value is outside the valid range. The LCP indicates the first invalid parameter.
• An error occurred loading data from the EEPROM to RAM when the LCP powered up.
• The parameter set or values in the LCP do not match the parameters in the soft starter.
•
Load User Set has been selected but no saved file is available.
Troubleshooting
• Reset the fault. The soft starter loads the default settings.
• If the problem persists, contact the local distributor.
• There are no parameters related to this trip message.
11.2.39 Phase Sequence
Cause
The phase sequence on the soft starter mains terminals (L1, L2, L3) is not valid.
Troubleshooting
• Check the phase sequence on L1, L2, and L3, and ensure that the setting in parameter 5-18 Phase Sequence is suitable for the
installation.
• Check the following parameters:
- Parameter 5-18 Phase Sequence.
-
Parameter 6-16 Phase Sequence.
11.2.40 Power Loss
Cause
This trip is not adjustable. The soft starter is not receiving mains supply on 1 or more phases.
Troubleshooting
• Check that the main contactor closes when a start command is given and remains closed until the end of a soft stop.
• Check the fuses. If testing the soft starter with a small motor, it must draw at least 10% of the programmed FLC setting on each
phase.
•
If shunt relay mode is enabled (parameter 20-8 Shunt Trip Mode), certain trips may cause the shunt relay to open the circuit
breaker.
• There are no parameters related to this trip message.
11.2.41 Pressure Sensor
Cause
The smart card has detected a fault with the pressure sensor.
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Troubleshooting
AQ262141844215en-000401 / 175R1174