Danfoss VLT 2800 Design Manual page 139

All about VLT 2800
the fault disappears only the alarm flashes. After a reset
the frequency converter is ready to start operation again.
No. Description
2 Live zero error (LIVE ZERO ERROR)
4 Mains phase loss (MAINS PHASE LOSS)
5 Voltage warning high (DC LINK VOLTAGE HIGH)
6 Voltage warning low (DC LINK VOLTAGE LOW)
7 Overvoltage (DC LINK OVERVOLT)
8 Undervoltage (DC LINK UNDERVOLT)
9 Inverter overload (INVERTER TIME)
10 Motor overloaded ( MOTOR, TIME)
11 Motor thermistor (MOTOR THERMISTOR)
12 Current limit (CURRENT LIMIT)
13 Overcurrent (OVERCURRENT)
14 Earth fault (EARTH FAULT)
15 Switch mode fault (SWITCH MODE FAULT)
16 Short-circuit (CURR. SHORT CIRCUIT)
17 Serial communication timeout (STD BUS TIMEOUT)
18 HPFB bus timeout (HPFB TIMEOUT)
33 Out of frequency range (OUT FREQ RNG/ROT LIM)
34 HPFB communication fault (PROFIBUS OPT. FAULT)
35 Inrush fault (INRUSH FAULT)
36 Overtemperature (OVERTEMPERATURE)
37-45 Internal fault (INTERNAL FAULT)
50 AMT not possible
51 AMT fault re. nameplate data (AMT TYPE.DATA FAULT)
54 AMT wrong motor (AMT WRONG MOTOR)
55 AMT timeout (AMT TIMEOUT)
56 AMT warning during AMT (AMT WARN. DURING AMT)
99 Locked (LOCKED)
Table 5.7 Warnings and Alarms
Warning
Alarm
Trip locked
Table 5.8 LED Indication
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 Terminal 53,
minimum scaling or parameter 315 Terminal 60, minimum
scaling.
WARNING/ALARM 4: Mains phase fault
No phase on mains supply side. Check the supply voltage
to the adjustable frequency drive. This fault is only active
in 3-phase mains supply. The alarm can also occur when
the load is pulsing. In this instance the pulses must be
dampened, e.g. using an inertia disc.
MG27E402
Design Guide
WARNING 5: Voltage warning high
yellow
If the intermediate circuit voltage (UDC) is higher than
red
Voltage warning high, the adjustable frequency drive gives
yellow and red
a warning and the motor continues to run unchanged. If
the UDC remains above the voltage warning limit, the
frequency converter trips after a set time. The time
depends on the device, and is set at 5-10 s. Note: The
adjustable frequency drive trips with an alarm 7
(overvoltage). A voltage warning can occur when the
connected mains voltage is too high. Check whether the
supply voltage is suitable for the adjustable frequency
drive, see chapter 5.3 General Technical Data for further
details. A voltage warning can also occur if the motor
frequency is reduced too quickly due to ramp-down time
being too short.
WARNING 6: Voltage warning low
If the intermediate circuit voltage (UDC) is lower than
Voltage warning low the adjustable frequency drive gives a
warning and the motor continues to run unchanged. A
voltage warning can occur when the connected mains
voltage is too low. Check whether the supply voltage is
Danfoss A/S © Rev. May/2014 All rights reserved.
Warning Alarm Trip
locked
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
X
X
X
X
X
5 5
X
X
X
X
X
X
137