VLT
®
4000 VT
■
List of warnings and alarms
The table gives the different warnings and alarms
and indicates whether the fault locks the VLT AFD.
After Trip locked, the line supply must be cut and
the fault must be corrected. Reconnect the line
supply and reset the VLT AFD before being ready.
A Trip can be reset manually in three ways
1. Via the control key [RESET]
2. Via a digital input
3. Via serial communication
In addition, an automatic reset may be selected
in parameter 400
Reset function.
Wherever a cross is placed under both Warning and
Alarm, this can mean that a warning precedes the
alarm. It can also mean that it is possible to program
whether a given fault is to result in a warning or an alarm.
This is possible, e.g. in parameter 117
Motor thermal
protection.
After a trip, the motor will be coasting and
on the VLT AFD alarm and warning will flash. If the fault
is removed, only the alarm will flash. After a reset, the
VLT AFD will be ready to start operation again.
No.
Description
Warning
Alarm
Trip
locked
1
10 Volts low (10 VOLT LOW)
X
2
Live zero fault (LIVE ZERO ERROR)
X
X
X
4
Mains imbalance (MAINS IMBALANCE)
X
5
Voltage warning high (DC LINK VOLTAGE HIGH)
X
6
Voltage warning low (DC LINK VOLTAGE LOW)
X
7
Overvoltage (DC LINK OVERVOLT)
X
X
8
Undervoltage (DC LINK UNDERVOLT)
X
X
9
Inverter overloaded (INVERTER TIME)
X
X
10
Motor overloaded (MOTOR TIME)
X
X
11
Motor thermistor (MOTOR THERMISTOR)
X
X
12
Current limit (CURRENT LIMIT)
X
X
13
Overcurrent (OVERCURRENT)
X
X
14
Ground fault (GROUND FAULT)
X
X
15
Switch mode fault (SWITCH MODE FAULT)
X
X
16
Short-circuit (CURR.SHORT CIRCUIT)
X
X
17
Serial communication timeout (STD BUSTIMEOUT)
X
X
18
HPFB bus timeout (HPFB TIMEOUT)
X
X
19
Fault in EEprom on power card (EE ERROR POWER)
X
20
Fault in EEprom on control card (EE ERROR CONTROL)
X
22
Auto-optimisation not OK (AMA FAULT)
X
29
Heat-sink temperature too high (HEAT SINK OVERTEMP.)
X
X
30
Motor phase U missing (MISSING MOT.PHASE U)
X
31
Motor phase V missing (MISSING MOT.PHASE V)
X
32
Motor phase W missing (MISSING MOT.PHASE W)
X
34
HBFB communication fault (HBFB COMM. FAULT)
X
X
37
Inverter fault (GATE DRIVE FAULT)
X
X
39
Check parameters 104 and 106 (CHECK P.104 & P.106)
X
40
Check parameters 103 and 105 (CHECK P.103 & P.106)
X
41
Motor too big (MOTOR TOO BIG)
X
42
Motor too small (MOTOR TOO SMALL)
X
60
Safety stop (EXTERNAL FAULT)
X
61
Output frequency low (FOUT < FLOW)
X
62
Output frequency high (FOUT > FHIGH)
X
63
Output current low (I MOTOR < I LOW)
X
X
64
Output current high (I MOTOR > I HIGH)
X
65
Feedback low (FEEDBACK < FDB LOW)
X
66
Feedback high (FEEDBACK > FDB HIGH)
X
67
Reference low (REF. < REF. LOW)
X
68
Reference high (REF. > REF. HIGH)
X
69
Temperature auto derate (TEMP.AUTO DERATE)
X
99
Unknown fault (UNKNOWN ALARM)
x
x
MG.40.A7.22 - VLT is a registered Danfoss trademark
116
