ALARM 31, Motor phase V missing
Motor phase V between the frequency converter and the
motor is missing.
Turn o 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.
Turn o the frequency converter and check motor phase
W.
ALARM 38, Internal fault
Contact your Danfoss supplier.
ALARM 44, Earth fault II
There is a discharge from the output phases to ground,
either in the cable between the frequency converter and
the motor or in the motor itself.
Troubleshooting
•
Turn
o the frequency converter and remove the
ground fault.
•
Measure the resistance to ground of the motor
cables and the motor with a megohmmeter to
check for a ground fault in the motor.
ALARM 46, Gate drive voltage low
The supply on the power card is out of range. There are 3
supplies generated by the switch mode power supply
(SMPS) on the power card: 24 V, 5 V, and ±18 V.
Troubleshooting
•
Check the power card.
ALARM 47, 24 V supply low
The 24 V DC is measured on the control card. It occurs
when the detected voltage on terminal 12 is lower than 18
V. Check the control card and the load connected.
ALARM 51, AMA check Unom and Inom
The setting of motor voltage, motor current, and motor
power is presumably wrong. Check the settings.
ALARM 52, AMA low Inom
The motor current is too low. Check the settings.
ALARM 53, AMA motor too big
The motor is too large for the AMA to be performed.
ALARM 54, AMA motor too small
The motor is too small for the AMA to be performed.
ALARM 55, AMA Parameter out of range
The parameter values found from the motor are outside
the acceptable range.
ALARM 56, AMA interrupted by user
The AMA is interrupted.
ALARM 57, AMA timeout
Try to start the AMA again a number of times, until the
AMA is performed. Note that repeated runs may heat the
motor to a level where the resistance R
s
and R
r
are
increased. In most cases, this is not critical.
ALARM 58, AMA internal fault
Contact your Danfoss supplier.
WARNING 59, Current limit
The current is higher than the value in
parameter 4-18 Current Limit.
ALARM 60, External interlock
External interlock has been activated. To resume normal
operation, apply 24 V DC to the terminal programmed for
external interlock and reset the frequency converter (via
serial communication, digital I/O, or by pressing [Reset]).
ALARM 69, Power card temperature
The temperature on the power card is either too high or
too low.
Troubleshooting
•
Ensure that the ambient operating temperature is
within the limits.
•
Check if the lters are clogged.
•
Check the fan operation.
•
Check the power card.
ALARM 70, Illegal power section conguration
The control card and power card are incompatible. Contact
the local supplier with the type code of the unit from the
nameplate and the part numbers of the cards to check
compatibility.
ALARM 80, Drive initialised to default value
Parameter settings are initialized to default settings after a
manual reset.
WARNING/ALARM 92, No ow
A no-ow condition has been detected in the system.
Parameter 22-23 No-Flow Function is set for alarm.
Troubleshoot the system and reset the frequency converter
after the fault has been cleared.
WARNING/ALARM 95, Broken belt
Torque is below the torque level set for no load, indicating
a broken belt. See parameter group 22-6* Broken Belt
Detection.
ALARM 99, Locked rotor
Rotor is blocked.
ALARM 101, Flow/pressure info missing
Sensorless-pump table is missing or wrong.
Troubleshooting
•
Download sensorless-pump table again.
ALARM 126, Motor Rotating
High back EMF voltage. Stop the rotor of the PM motor.
WARNING 127, Back EMF too high
This warning only applies to PM motors. When the back
EMF is larger than 90%*U
invmax
(overvoltage threshold), and
does not fall to a normal level within 5 s, this warning
occurs.
WARNING 200, Fire Mode
Fire mode has been activated.
Troubleshooting Programming Guide
MG18B502 Danfoss A/S © 04/2018 All rights reserved. 103
4 4
To Next Page
Loading...
Need help?
General