Danfoss vlt FC 102 Programming Guide

4 Troubleshooting
4.1 Troubleshooting
4.1.1 Alarms and Warnings
A warning or an alarm is signalled by the relevant LED on
the front of the frequency converter and indicated by a
code on the display.
A warning remains active until its cause is no longer
present. Under certain circumstances, operation of the
motor may still be continued.
In the event of an alarm, the frequency converter trips. To
restart operation, reset the alarms once their causes have
been rectied.
This may be done in 4 ways:
•
By resetting the [RESET] on the LCP.
•
Via a digital input with the Reset function.
•
Via serial communication/optional eldbus.
•
By resetting automatically using the auto reset-
function, which is a default setting, see
parameter 14-20 Reset Mode.
NOTICE
After a manual reset pressing [RESET] on the LCP, press
[Auto On] or [Hand On] to restart the motor.
If an alarm cannot be reset, the reason may be that its
cause has not been rectied, or the alarm is trip-locked.
CAUTION
Alarms that are trip-locked oer additional protection, as
the mains supply must be switched o before the alarm
can be reset. After being switched back on, the
frequency converter is no longer blocked and may be
reset as described above once the alarm cause has been
rectied.
Alarms that are not trip-locked can also be reset using
the automatic reset function in parameter 14-20 Reset
Mode (Warning: Automatic wake-up is possible!)
If a warning and alarm is marked against a code in the
Alarm/warning list table, this means that either a
warning occurs before an alarm, or it can be specied
whether it is a warning or an alarm that is to be shown
for a given fault.
This is possible, for instance, in parameter 1-90 Motor
Thermal Protection. After an alarm or trip, the motor
carries on coasting, and the alarm and warning ash on
the frequency converter. Once the problem has been
rectied, only the alarm continues ashing.
NOTICE
No missing motor phase detection (numbers 30-32) and
no stall detection are active when parameter 1-10 Motor
Construction is set to [1] PM non-salient SPM.
No. Description Warning Alarm/
trip
Alarm/
trip lock
Parameter
reference
Fire mode alarm handling selected
in parameter 24-09 Fire Mode Alarm
Handling
Critical alarms cause a trip.
Warranty-
aecting
alarms
in re
mode
[0] Trip +
Reset
[1] Trip [2] Test –
1 10 V low X – – – Ignored Ignored Warning –
2 Live zero error (X) (X) –
Parameter 6-01
Live Zero Timeout
Function, Parameter
6-02
Fire Mode Live Zero
Timeout Function
Ignored Ignored
(Warning /
Trip)
–
3 No motor (X) (X) –
Parameter 1-80
Function at Stop
Ignored Ignored
(Warning /
Trip)
–
4 Mains phase loss (X) (X) (X)
Parameter 14-12
Response to Mains
Imbalance
Ignored Ignored
(Warning /
Trip)
X
Troubleshooting Programming Guide
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Danfoss vlt FC 102 Specifications

General

Category	DC Drives
Model	Danfoss VLT FC 102
Output voltage range	0 to rated motor voltage
Power range	0.37 kW to 200 kW
Communication interfaces	RS-485
Protection features	Overvoltage, undervoltage, overcurrent, short circuit, earth fault, overtemperature, motor thermal protection
Cooling method	Air-cooled
Enclosure rating	IP20, IP21, IP55 (depending on model)
Approvals	CE, UL, cUL