VLT
®
FCD Series
â– Warnings/alarm messages
A warning or an alarm will appear in the LEDs on
the LCP2. A warning will be shown until the fault
has been corrected, while an alarm will continue
to flash until the [STOP/RESET] key is activated.
The table shows the various warnings and alarms
shown in the LCP2, and whether the fault locks the
frequency converter. After a Trip locked (alarm and
warning LEDs flash at the same time), the mains
supply is cut off and the fault is corrected. The mains
supply is reconnected and the frequency converter
is reset. The frequency converter is now ready. A
Trip can be reset manually in three ways:
1. Via the operating key [STOP/RESET].
2. Via a digital input.
3. Via serial communication.
It is also possible to choose an automatic reset in
parameter 405 Reset function. When a cross appears
in both warning and alarm, this can mean that a
warning comes before an alarm. It can also mean
that it is possible for the user to programme whether
a warning or an alarm will appear for a given fault.
For example, this is possible in parameter 128 Motor
thermal protection.Afteratripthemotorwillcoast,
and alarm and warning will blink on the frequency
converter, but if the fault disappears only the alarm
will blink. After a reset the frequency converter
will be ready to start operation again.
No. Description Warning Alarm Trip
locked
2 Live zero error (LIVE ZERO ERROR) X X X
4 Mains phase loss (MAINS PHASE LOSS) X X 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 X
8Undervoltage(DCLINKUNDERVOLT) X X X
9 Inverter overload (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 X
14 Earth fault (EARTH FAULT) XX
15 Switch mode fault (SWITCH MODE FAULT) X X
16 Short-circuit (CURR. SHORT CIRCUIT) X X
17 Serial communication timeout (STD BUS TIMEOUT) X X
18 HPFB bus timeout (HPFB TIMEOUT) X X
33 Out of frequency range (OUT FREQ RNG/ROT LIM) X
34 HPFB communication fault (PROFIBUS OPT. FAULT) X X
35 Inrush fault (INRUSH FAULT) X X
36 Overtemperature (OVERTEMPERATURE) X X
37-45 Internal fault (INTERNAL FAULT) X X
50 AMT not possible X
51 AMT fault re. nameplate data (AMT TYPE.DATA FAULT) X
54 AMT wrong motor (AMT WRONG MOTOR) X
55 AMT timeout (AMT TIMEOUT) X
56 AMT warning during AMT (AMT WARN. DURING AMT) X
99 Locked (LOCKED) X
LED indication
Warning yellow
Alarm red
Trip locked yellow and red
WARNING/ALARM 2: Live zero fault
The voltage or current signal on terminal 53 or
60 is below 50% of the preset value in parameter
309 or 315 Terminal, mi n. scaling.
WARNING/ALARM 4: Mains phase fault
No phase on mains supply side. Check the supply
voltage to the frequency converter. This fault is only
active in 3-phase mains supply. The alarm can only
occur when the load is pulsing. In this instance the
pulses must be dampened, e.g. using an inertia disc.
MG.04.B7.02 - VLT is a registered Danfoss trademark
102
To Next Page
Loading...
Need help?
General