4.6 Warning/Alarm Messages
4.6.1 Warning/Alarm Code List
A warning or an alarm is signaled by the LEDs on the front of the adjustable frequency drive and
by a code on the display.
A
warning
indicates a condition that may require attention or a trend that may eventually require
attention. A warning remains active until the cause is no longer present. Under some circumstan-
ces motor operation may continue.
A
trip
is the action when an alarm has appeared. The trip removes power to the motor and can
be reset after the condition has been cleared by pressing the [reset] button or through a digital
input (parameter 5-1*). The event that caused an alarm cannot damage the adjustable frequency
drive or cause a dangerous condition. Alarms must be reset to restart operation once their cause
has been rectified.
This may be done in three ways:
1.
Pressing the [reset] button on the control panel LCP.
2.
A digital reset input.
3.
Serial communication/optional serial communication bus reset signal.
NOTE!
After a manual reset using the [RESET] button on the LCP, the [AUTO ON] button
must be pressed to restart the motor.
A
trip lock
is an action when an alarm occurs which may cause damage to the adjustable fre-
quency drive or connected equipment. Power is removed from the motor. A trip lock can only be
reset after the condition is cleared by cycling power. Once the problem has been rectified, only
the alarm continues flashing until the adjustable frequency drive is reset.
High Power Service Manual for VLT
®
FC Series
Adjustable Frequency Drives
4 Troubleshooting
MG.90.L1.22 - VLT
®
is a registered Danfoss trademark
4-7
4
Summary of Contents for VLT HVAC FC 100
Page 219: ......