Danfoss VACON NXP IP00 - Page 171

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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.
12.12.119 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.
Troubleshooting
Do a check of the current loop circuitry.
12.12.120 Fault 51 - External fault 1
Cause
Digital input fault.
Digital input has been programmed as external fault 1 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.
12.12.121 Fault 52 - Keypad communication fault
Cause
The connection between the control panel (or VACON
®
NCDrive) and the drive is defective.
Troubleshooting
Do a check of the control panel connection and the control panel cable.
12.12.122 Fault 53 - Fieldbus fault
Cause
The data connection between the fieldbus master and the fieldbus board is defective.
Troubleshooting
Do a check of the installation and fieldbus master.
If the installation is correct, ask instructions from the local distributor.
12.12.123 Fault 54 - Slot fault
Cause
Defective option board or slot.
Troubleshooting
Do a check of the board and slot.
Ask instructions from the local distributor.
12.12.124 Fault 56 - Measured Temperature
Cause
Shows temperature measurement fault for option board OPTBH or OPTB8.
Temperature exceeded set limit.
Sensor disconnected.
Short circuit.
Troubleshooting
Find the cause of temperature rise.
AQ351737303996en-000201 / DPD00888 | 171Danfoss A/S © 2023.09
Specifications
VACON® NXP IP00 Drive Modules
Operating Guide