Danfoss VLT series User Manual

Troubleshooting
Check for the following conditions:
•
Ambient temperature too high.
•
Motor cables too long.
•
Incorrect airow clearance above and below the
frequency converter.
•
Blocked airow around the frequency converter.
•
Damaged heat sink fan.
•
Dirty heat sink.
For D, E, and F enclosures, this alarm is based on the
temperature measured by the heat sink sensor mounted
inside the IGBT modules. For the F enclosures, the thermal
sensor in the rectier module can also cause this alarm.
Troubleshooting
•
Check the fan resistance.
•
Check the soft charge fuses.
•
Check the IGBT thermal sensor.
ALARM 30, Motor phase U missing
Motor phase U between the frequency converter and the
motor is missing.
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to perform installation, start-up, and maintenance
by qualied personnel can result in death or serious
injury.
•
Disconnect power before proceeding.
Troubleshooting
•
Remove the power from the frequency converter
and check motor phase U.
ALARM 31, Motor phase V missing
Motor phase V between the frequency converter and the
motor is missing.
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to perform installation, start-up, and maintenance
by qualied personnel can result in death or serious
injury.
•
Disconnect power before proceeding.
Troubleshooting
•
Remove the power from the frequency converter
and check motor phase V.
ALARM 32, Motor phase W missing
Motor phase W between the frequency converter and the
motor is missing.
WARNING
HIGH VOLTAGE
Frequency converters contain high voltage when
connected to AC mains input, DC supply, or load sharing.
Failure to perform installation, start-up, and maintenance
by qualied personnel can result in death or serious
injury.
•
Disconnect power before proceeding.
Troubleshooting
•
Remove the power from the frequency converter
and check motor phase W.
ALARM 33, Inrush fault
Too many power-ups have occurred within a short time
period.
Troubleshooting
•
Let the unit cool to operating temperature.
WARNING/ALARM 34, Fieldbus communication fault
The
eldbus on the communication option card is not
working.
WARNING/ALARM 36, Mains failure
This warning/alarm is only active if the supply voltage to
the frequency converter is lost and parameter 14-10 Mains
Failure is not set to [0] No Function.
Troubleshooting
•
Check the fuses to the frequency converter and
mains supply to the unit.
ALARM 38, Internal fault
When an internal fault occurs, a code number dened in
Table 6.1 is shown.
Troubleshooting
•
Cycle the power.
•
Check that the option is properly installed.
•
Check for loose or missing wiring.
It may be necessary to contact Danfoss Service or the
supplier. Note the code number for further troubleshooting
directions.
Number Text
0 The serial port cannot be initialized. Contact the
Danfoss supplier or Danfoss Service.
256–258 The power EEPROM data is defective or too old.
512 The control board EEPROM data is defective or too
old.
513 Communication timeout reading EEPROM data.
514 Communication timeout reading EEPROM data.
515 Application-oriented control cannot recognize the
EEPROM data.
Warnings and Alarms Operating Instructions
MG34Q402 Danfoss A/S © 04/2016 All rights reserved. 87
6
6

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)