•
•
-
-
-
-
-
-
-
-
•
•
•
•
•
•
•
Troubleshooting
Resolve the trigger condition.
Check the following parameters:
Parameter 7-1 Input A Function.
Parameter 7-2 Input A Trip.
Parameter 7-3 Input A Trip Delay.
Parameter 7-4 Input A Initial Delay.
Parameter 7-5 Input B Function.
Parameter 7-6 Input B Trip.
Parameter 7-7 Input B Trip Delay.
Parameter 7-8 Input B Initial Delay.
11.2.20 Instantaneous Overcurrent
Cause
This trip is not adjustable. The current on all 3 phases has exceeded 7.2 times the value of parameter 1-2 Motor Full Load Current.
Causes can include a locked rotor condition or an electrical fault in the motor or cabling.
Troubleshooting
Check for jammed loads.
Check for faults in the motor and in the cables.
There are no parameters related to this trip message.
11.2.21 Internal Fault X (Where X is a number)
Cause
The soft starter has tripped on an internal fault.
Troubleshooting
Contact Danfoss with the fault code (X).
11.2.22 Internal Fault 88
Cause
The soft starter firmware does not match the hardware.
11.2.23 LCP Disconnected
Cause
Parameter 1-1 Command Source is set to Remote LCP, but the soft starter cannot detect a remote LCP.
Troubleshooting
If a remote LCP is installed, check that the cable is firmly connected to the soft starter.
If no remote LCP is installed, change the setting of parameter 1-1 Command Source.
11.2.24 L1/L2/L3 Phase Loss
Cause
This trip is not adjustable. During pre-start checks, the soft starter has detected a phase loss as indicated. In run state, the soft starter
has detected that the current on the affected phase has dropped below 10% of the programmed motor FLC for more than 1 s. This
current drop indicates that either the incoming phase or connection to the motor has been lost.
Troubleshooting
For the soft starter and the motor, check
AQ262141844215en-000401 / 175R1174122 | Danfoss A/S © 2020.12
Troubleshooting
VLT® Soft Starter MCD 600
Operating Guide
To Next Page
Loading...
Need help?
General
