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5.2.63 ALARM 67, Option Module Configuration has Changed
Cause
One or more options have either been added or removed since the last power-down.
Troubleshooting
Check that the configuration change is intentional and reset the unit.
5.2.64 ALARM 68, Safe Stop Activated
Cause
Safe Torque Off (STO) has been activated.
Troubleshooting
To resume normal operation, apply 24 V DC to terminal 37, then send a reset signal (via bus, digital, or by pressing [Reset]).
5.2.65 ALARM 69, Power Card Temperature
Cause
The internal temperature has exceeded the allowed operating limits.
Troubleshooting
Check that the ambient operating temperature is within the limits.
Check for clogged filters.
Check fan operation.
Check the power card.
5.2.66 ALARM 70, Illegal FC Configuration
Cause
The control card and power card are incompatible.
Troubleshooting
To check compatibility, contact the supplier with the type code from the unit nameplate and the part numbers on the cards.
5.2.67 WARNING 73, Safe Stop Auto Restart
Cause
STO activated.
Troubleshooting
With automatic restart enabled, the motor can start when the fault is cleared.
5.2.68 Warning 76, Power Unit Setup
Cause
The required number of power units do not match the detected number of active power units.
Troubleshooting
When replacing an F-frame module, this will occur if the power specific data in the module power card does not match the rest
of the drive. Confirm the spare part and its power card are the correct part number.
5.2.69 WARNING 77, Reduced Power Mode
Cause
The drive is operating in reduced power mode (less than allowed number of inverter sections). The warning is generated on power
cycle when the drive is set to run with fewer inverters and remains on.
AU373327181955en-000101 / 130R1208 | 367
Danfoss A/S © 2021.08
Troubleshooting
VLT® AutomationDrive EZ FC 321
Programming Guide