Danfoss VLT MCD 600 Operating Manual page 131

VLT® Soft Starter MCD 600
Operating Guide
Troubleshooting
• Check the following parameters:
- Parameter 30-1 Pressure Sensor Type.
- Parameter 36-1 Pressure Sensor.
11.2.42 Rating Capacity
Cause
The soft starter is operating beyond its safe capacity.
Troubleshooting
• Allow the soft starter to cool.
• There are no parameters related to this trip message.
11.2.43 RTD Circuit
Cause
The smart card has detected a fault with the RTD sensor, or the RTD has activated temperature protection.
Troubleshooting
• Check the following parameters:
- Parameter 35-2 Temperature Trip Level.
-
Parameter 36-10 RTD/PT100 B.
11.2.44 SCR Itsm
Cause
The SCR current surge rating has been exceeded.
There are no parameters related to this trip message.
11.2.45 SCR Overtemperature
Cause
The temperature of the SCRs, calculated by the thermal model, is too high to allow further operation.
Troubleshooting
• Wait for the soft starter to cool.
• There are no parameters related to this trip message.
11.2.46 Starter Communication
Cause
There is a problem with the connection between the soft starter and the optional communications module.
Troubleshooting
• Remove and reinstall the card. If the problem persists, contact the local distributor.
• There are no parameters related to this trip message.
11.2.47 Starts per Hour
Cause
The soft starter has already attempted the maximum number of starts in the last 60 minutes.
Troubleshooting
• Wait before attempting another start.
• To determine when the waiting period ends, review the log.
•
See also Parameter 5-17 Starts per Hour.
Danfoss A/S © 2020.12
Troubleshooting
AQ262141844215en-000401 / 175R1174 | 127