Alarm 39, Heat Sink Sensor; Warning 41, Overload Of Digital Output Terminal 29; Alarm 46, Power Card Supply; Warning 47, 24 V Supply Low - Danfoss VLT AutomationDrive FC 302 Programming Manual

Troubleshooting
Number Text
5124 Option in slot B: Hardware incompatible with the
control board hardware.
5125 Option in slot C0: Hardware incompatible with the
control board hardware.
5126 Option in slot C1: Hardware incompatible with the
control board hardware.
5376–6231 Internal fault. Contact the Danfoss supplier or
Danfoss service department.
Table 6.5 Internal Fault Codes

ALARM 39, Heat sink sensor

No feedback from the heat sink temperature sensor.
The signal from the IGBT thermal sensor is not available on
the power card. The problem could be on the power card,
on the gatedrive card, or the ribbon cable between the
power card and gatedrive card.
WARNING 40, Overload of digital output terminal 27
Check the load connected to terminal 27 or remove the
short-circuit connection. Check parameter 5-00 Digital I/O
Mode and parameter 5-01 Terminal 27 Mode.

WARNING 41, Overload of digital output terminal 29

Check the load connected to terminal 29 or remove the
short-circuit connection. Also check parameter 5-00 Digital
I/O Mode and parameter 5-02 Terminal 29 Mode.
WARNING 42, Overload of digital output on X30/6 or
overload of digital output on X30/7
For terminal X30/6, check the load connected to terminal
X30/6 or remove the short-circuit connection. Also check
parameter 5-32 Term X30/6 Digi Out (MCB 101) (VLT
General Purpose I/O MCB 101).
For terminal X30/7, check the load connected to terminal
X30/7 or remove the short-circuit connection. Check
parameter 5-33 Term X30/7 Digi Out (MCB 101) (VLT
General Purpose I/O MCB 101).
ALARM 43, Ext. supply
®
VLT Extended Relay Option MCB 113 is mounted without
external 24 V DC. Either connect a 24 V DC external supply
or specify that no external supply is used via
parameter 14-80 Option Supplied by External 24VDC, [0] No.
A change in parameter 14-80 Option Supplied by External
24VDC requires a power cycle.
ALARM 45, Earth fault 2
Ground fault.
Troubleshooting
•
Check for proper grounding and loose
connections.
•
Check for proper wire size.
•
Check the motor cables for short circuits or
leakage currents.
MG33MP02
Programming Guide

ALARM 46, Power card supply

The supply on the power card is out of range. Another
reason can be a defective heat sink fan.
There are 3 supplies generated by the switch mode supply
(SMPS) on the power card:
•
•
•
When powered with VLT
the 24 V and 5 V supplies are monitored. When powered
with 3-phase mains voltage, all 3 supplies are monitored.
Troubleshooting
•
•
•
•
•

WARNING 47, 24 V supply low

The supply on the power card is out of range.
There are 3 supplies generated by the switch mode supply
(SMPS) on the power card:
•
•
•
Troubleshooting
•
®
WARNING 48, 1.8 V supply low
The 1.8 V DC supply used on the control card is outside of
the allowable limits. The supply is measured on the control
card.
®
Troubleshooting
•
•
WARNING 49, Speed limit
The warning is shown when the speed is outside of the
specified range in parameter 4-11 Motor Speed Low Limit
[RPM] and parameter 4-13 Motor Speed High Limit [RPM].
ALARM 50, AMA calibration failed
Contact the Danfoss supplier or Danfoss service
department.
ALARM 51, AMA check U
The settings for motor voltage, motor current, and motor
power are wrong.
Troubleshooting
•
ALARM 52, AMA low I
The motor current is too low.
Danfoss A/S © 10/2018 All rights reserved.
24 V.
5 V.
±18 V.
®
24 V DC Supply MCB 107, only
Check for a defective power card.
Check for a defective control card.
Check for a defective option card.
If a 24 V DC supply is used, verify proper supply
power.
Check for a defective heat sink fan.
24 V.
5 V.
±18 V.
Check for a defective power card.
Check for a defective control card.
If an option card is present, check for
overvoltage.
and I
nom nom
Check the settings in parameters 1-20 to 1-25.
nom
6 6
335