Danfoss VLT Flow Drive FC 111 User Manual

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5.5.43 WARNING 127, Back EMF Too High
Cause
This warning applies to PM motors only. When the back-EMF exceeds 90% x U
invmax
(overvoltage threshold) and does not drop to
normal level within 5 s, this warning is reported. The warning remains until the back EMF returns to a normal level.
Troubleshooting
Check the settings in parameter group 1-2* Motor Data.
5.5.44 WARNING 159, Check Valve Failure
When the drive is not in operation, a broken check valve leads to the motor runs in reverse.
Troubleshooting
Troubleshoot the system.
Reset the drive when the fault is cleared.
5.5.45 WARNING 200, Fire Mode
Cause
Fire mode has been activated.
Troubleshooting
The warning clears when fire mode is removed.
See the fire mode data in the alarm log.
5.5.46 WARNING 202, Fire Mode Limits Exceeded
Cause
Fire mode has suppressed 1 or more warranty-voiding alarms.
Troubleshooting
Cycle power to the unit to remove the warning.
See the fire mode data in the alarm log.
5.5.47 ALARM 250, New Spare Part
Cause
The power or switch mode supply has been exchanged.
Troubleshooting
Contact the local Danfoss supplier.
5.5.48 ALARM 251, New Type Code
Cause
The drive has a new type code.
Troubleshooting
Contact the local Danfoss supplier.
5.6 LCP Errors Messages
LCP errors are not warnings or alarms. They do not affect the operation of the drive. An LCP error example on the LCP is shown in
the following illustration.
e30bu794.10
0-**: Operation / Dis
1-**: Load and Motor
Button disabled
Illustration 20: LCP Error Example
AU363928304090en-000101 / 130R0982 | 203Danfoss A/S © 2021.07
Troubleshooting
VLT® Flow Drive FC 111
Programming Guide

Danfoss VLT Flow Drive FC 111 Specifications

General

Brand	Danfoss
Model	VLT Flow Drive FC 111
Category	DC Drives
Language	English