Warnings And Alarms - Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual

Warnings and Alarms

8 Warnings and Alarms
LEDs on the front of the frequency converter indicate if a
warning or an alarm has occurred. For each warning and
alarm there is a specific code, which is shown on the
display.
A warning remains active until its cause is no longer
present. Under certain circumstances operation of the
motor may still continue. Warning messages may in some
cases be critical.
If an alarm occurs, the frequency converter trips. To restart
operation, reset alarms once their causes have been
rectified.
Reset can be done in 4 ways:
•
Pressing [Reset] on the LCP.
•
8 8
Via a digital input with the Reset function.
•
Via serial communication/optional fieldbus.
•
By resetting automatically using the Auto Reset
function (default).
NOTICE
After a manual reset pressing [Reset], press [Auto On] or
[Hand On] to restart the motor.
No. Description
1 10 volts low
2 Live zero error
3 No motor
4 Mains phase loss
5 DC link voltage high
6 DC link voltage low
7 DC overvoltage
8 DC undervoltage
9 Inverter overloaded
10 Motor ETR overtemperature
11 Motor thermistor overtemperature
12 Torque limit
13 Overcurrent
14 Earth fault
15 Hardware mismatch
16 Short circuit
17 Control word timeout
23 Internal fan fault
24 External fan fault
25 Brake resistor short-circuited
26 Brake resistor power limit
27 Brake chopper short-circuited
28 Brake check
29 Drive overtemperature
116
Operating Instructions
If an alarm cannot be reset, the reason may be that its
cause has not been rectified, or the alarm is trip-locked
(see also Table 8.1).
CAUTION
Alarms that are trip-locked offer extra protection,
meaning that the mains supply must be switched off
before the alarm can be reset. After being switched back
on, the frequency converter is no longer blocked and
may be reset as described previously once the cause has
been rectified.
Alarms that are not trip-locked can also be reset using
the automatic reset function in 14-20 Reset Mode
(Warning: Automatic wake-up is possible!)
Table 8.1 specifies whether a warning occurs before an
alarm, or whether to display a warning or an alarm 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 flash on
the frequency converter. Once the problem has been
rectified, only the alarm continues flashing.
Warning Alarm/trip
X
(X) (X)
(X)
(X) (X)
X
X
X X
X X
X X
(X) (X)
(X) (X)
X X
X X
X X
X
X
(X) (X)
X
X
X
(X) (X)
X X
(X) (X)
X X
Danfoss A/S © 08/2014 All rights reserved.
Alarm/trip lock Parameter reference
6-01
1-80
(X) 14-12
1-90
1-90
X
X
X
X
8-04
14-53
2-13
2-15
X
MG11F502