Danfoss VLT series Quick Guide

1.7 Warnings and Alarms
Fault
number
Alarm/
Warning
Bit
Number Fault text Warning Alarm
Trip
locked Cause of problem
2 16 Live zero error X X
Signal on terminal 53 or 54 is less than 50% of value set in
6-10 Terminal 53 Low Voltage, 6-12 Terminal 53 Low Current,
6-20 Terminal 54 Low Voltage or 6-22 Terminal 54 Low Current. See
also parameter group 6-0* Analog I/O Mode.
4 14 Mains ph. loss X X X
Missing phase on supply side or too high voltage imbalance.
Check supply voltage. See 14-12 Function at Mains Imbalance.
7 11 DC over volt X X Intermediate circuit voltage exceeds limit.
8 10 DC under volt X X
Intermediate circuit voltage drops below “voltage warning low”
limit.
9 9
Inverter
overload X X More than 100% load for too long.
10 8
Motor ETR
over X X
Motor is too hot due to more than 100% load for too long. See
1-90 Motor Thermal Protection.
11 7 Motor th over X X
Thermistor or thermistor connection is disconnected. See
1-90 Motor Thermal Protection.
13 5 Over Current X X X Inverter peak current limit is exceeded.
14 2 Earth Fault X X Discharge from output phases to ground.
16 12 Short Circuit X X Short-circuit in motor or on motor terminals.
17 4 Ctrl.word TO X X
No communication to frequency converter. See parameter group
8-0* Comm. General Settings.
24 50 Fan Fault X X The fan is not working (Only on 400 V 30-90 kW units).
30 19 U phase loss X X
Motor phase U is missing. Check the phase. See 4-58 Missing Motor
Phase Function.
31 20 V phase loss X X
Motor phase V is missing. Check the phase. See 4-58 Missing Motor
Phase Function.
32 21 W phase loss X X
Motor phase W is missing. Check the phase. See 4-58 Missing
Motor Phase Function.
38 17 Internal fault X X Contact your local Danfoss supplier.
40 10
Overload on
Terminal 27,
Digital Output X Overload on Terminal 27, Digital Output.
41 11
Overload on
Terminal 29,
Digital Output X Overload on Terminal 29, Digital Output.
44 28 Earth Fault X X Discharge from output phases to ground.
46
Gate drive
voltage fault X X
47
Aux 24 V
supply low X X X
50
AMA
Calibration
failed X Contact your local Danfoss supplier.
51 15
AMA
Unom,Inom X
The setting of motor voltage, motor current and motor power is
presumably wrong. Check the settings.
52 AMA low Inom X The motor current is too low. Check the settings.
53
AMA big
motor X The motor is too big for the AMA to be carried out.
Quick Guide
VLT
®
HVAC Basic Drive Cascade Controller Quick Guide
MG18F402 - VLT
®
is a registered Danfoss trademark 27
1 1

Danfoss VLT series Specifications

General

Series	VLT
Category	DC Drives
Output Voltage	0-100% of input voltage
Protection Features	Overvoltage, Undervoltage, Overcurrent, Overtemperature, Short Circuit, Ground Fault
Communication Interfaces	Profibus, CANopen
Enclosure Rating	IP20, IP21, IP55, IP66
Cooling Method	Forced Air Cooling, Convection Cooling
Control Mode	Sensorless Vector, Closed Loop Vector
Ambient Temperature	-10°C to +50°C (14°F to 122°F)