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Operating Guide | VACON® NXS/NXP Air-cooled
12.10.120 Fault 49 - Division by zero in application
Cause
Division by zero has occurred in application program.
Troubleshooting
•
If the fault shows again while the AC drive is in run state, ask instructions from the local distributor.
•
For an application programmer: do a check of the application program.
12.10.121 Fault 50 - Analogue input Iin < 4 mA (sel. signal range 4 to 20 mA)
Cause
Current at the analog input is < 4 mA.
•
Control cable is broken or loose
•
signal source has failed.
It is possible to set different responses in the application for this fault. See parameter group Protections.
Troubleshooting
Do a check of the current loop circuitry.
12.10.122 Fault 51 - External fault
Cause
Digital input fault.
Digital input has been programmed as external fault input and this input is active.
Troubleshooting
•
Check the programming.
•
Check the device which the error message indicates.
•
Check the cabling for the respective device.
12.10.123 Fault 52 - Keypad communication fault
Cause
The connection between the control panel (or VACON
Troubleshooting
Do a check of the control panel connection and the control panel cable.
Danfoss A/S © 2020.02
®
NCDrive) and the drive is defective.
Specifications
AQ275638903263en-000301 / DPD00910| 229
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