Specifications

There are 4 ways to restart after an event:
1. Pressing [RESET] on the LCP.
2. Via a digital input with the “Reset” function.
3. Via serial communication/optional fieldbus.
4.
By resetting automatically using the Auto Reset
function, which is a default setting for VLT
®
HVAC
Drive. See H-04 Auto-Reset (Times) in the VLT®
HVAC Programming Guide
NOTICE
After pressing [RESET] , press the [Auto On] or
[Hand On] button to restart the motor.
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 8.17).
CAUTION
Alarms that are trip-locked offer additional protection,
meaning that the mains supply must be switched off
before the alarm can be reset. After switching mains
supply back on, the frequency converter is no longer
blocked and may be reset as described above once the
cause has been rectified. Alarms that are not trip-locked
can also be reset using the automatic reset function in
H-04 Auto-Reset (Times) (Warning: automatic wake-up is
possible)
If a warning and alarm is marked against a code in
Table 8.17, this means that either a warning occurs
before an alarm, or it can be specified whether it is a
warning or an alarm that is to be displayed for a given
fault.
This is possible, for instance, in F-10 Electronic Overload.
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.
NOTICE
No missing motor phase detection (no 30-32) and no
stall detection is active when P-20 Motor Construction is
set to [1] PM non salient SPM.
No. Description Warning Alarm/Trip Alarm/Trip Lock Parameter
Reference
1 10 Volts low X
2 Live zero error (X) (X) 6-01
3 No motor (X) 1-80
4 Mains phase loss (X) (X) (X) 14-12
5 DC link voltage high X
6 DC link voltage low X
7 DC over voltage X X
8 DC under voltage X X
9 Inverter overloaded X X
10 Motor ETR over temperature (X) (X) 1-90
11 Motor thermistor over temperature (X) (X) 1-90
12 Torque limit X X
13 Over Current X X X
14 Earth fault X X X
15 Hardware mismatch X X
16 Short Circuit X X
17 Control word timeout (X) (X) 8-04
18 Start failed X
23 Internal Fan Fault X
24 External Fan Fault X 14-53
25 Brake resistor short-circuited X
26 Brake resistor power limit (X) (X) 2-13
27 Brake chopper short-circuited X X
28 Brake check (X) (X) 2-15
29 Drive over temperature X X X
30 Motor phase U missing (X) (X) (X) 4-58
General Specifications and ... VLT® HVAC Drive FC 102 Design Guide
MG16C102 - Rev. 2013-08-20 199
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