Danfoss VLT FC 102 N500 User Manual

•
•
•
•
•
•
Troubleshooting
Stop the motor before writing the MCO prole to parameter 8-10 Control Word Prole.
9.3.72 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 specic data in the module power card does not match the rest
of the drive. Conrm the spare part and its power card are the correct part number.
9.3.73 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.
9.3.74 ALARM 78, Tracking Error
Cause
The dierence between setpoint value and actual value exceeds the value in parameter 4-35 Tracking Error.
Troubleshooting
Disable the function or select an alarm/warning in parameter 4-34 Tracking Error Function.
Investigate the mechanics around the load and motor. Check feedback connections from motor encoder to drive.
Select motor feedback function in parameter 4-30 Motor Feedback Loss Function.
Adjust the tracking error band in parameter 4-35 Tracking Error and parameter 4-37 Tracking Error Ramping.
9.3.75 ALARM 79, Illegal Power Section Conguration
Cause
The scaling card has an incorrect part number or is not installed. The MK102 connector on the power card could not be installed.
9.3.76 ALARM 80, Drive Initialized to Default Value
Cause
Parameter settings are initialized to default settings after a manual reset. To clear the alarm, reset the unit.
9.3.77 ALARM 81, CSIV Corrupt
Cause
The CSIV le has syntax errors.
9.3.78 ALARM 82, CSIV Parameter Error
Cause
CSIV failed to initialize a parameter.
9.3.79 ALARM 83, Illegal Option Combination
Cause
The mounted options are incompatible.
9.3.80 ALARM 84, No Safety Option
Cause
The safety option was removed without applying a general reset.
Troubleshooting
Reconnect the safety option.
9.3.81 ALARM 85, Dang Fail PB
Cause
PROFIBUS/PROFIsafe error.
AQ357954340588en-000201 / 130R0881 | 135Danfoss A/S © 2020.09
Maintenance, Diagnostics, and
Troubleshooting
VLT® Refrigeration Drive FC 103
Operating Guide

Danfoss VLT FC 102 N500 Specifications

General

Brand	Danfoss
Model	VLT FC 102 N500
Category	DC Drives
Language	English