List Of Warnings And Alarms - Danfoss FC 103 Instruction Manual

Maintenance, Diagnostics an...
In addition to the text and alarm code in the LCP, there
are three status indicator lights.
On
OK
Warn.
Alarm
Warning LED
Warning On
Alarm Off
Trip Lock On
Figure 7.3 Status Indicator Lights

7.4 List of Warnings and Alarms

The warning/alarm information below defines each
warning/alarm condition, provides the probable cause for
the condition, and details a remedy or troubleshooting
procedure.
WARNING 1, 10 Volts low
The control card voltage is below 10 V from terminal 50.
Remove some of the load from terminal 50, as the 10 V
supply is overloaded. Max. 15 mA or minimum 590 Ω.
A short circuit in a connected potentiometer or improper
wiring of the potentiometer can cause this condition.
Troubleshooting
•
Remove the wiring from terminal 50. If the
warning clears, the problem is with the wiring. If
the warning does not clear, replace the control
card.
WARNING/ALARM 2, Live zero error
This warning or alarm only appears if programmed in
6-01 Live Zero Timeout Function. The signal on one of the
analog inputs is less than 50% of the minimum value
programmed for that input. Broken wiring or faulty device
sending the signal can cause this condition.
MG16E322
Instruction Manual
2
WARNING/ALARM 4, Mains phase loss
A phase is missing on the supply side, or the line voltage
imbalance is too high. This message also appears for a
fault in the input rectifier on the adjustable frequency
drive. Options are programmed at 14-12 Function at Mains
Alarm LED
Imbalance.
Off
On (Flashing)
On (Flashing)
WARNING 5, DC link voltage high
The intermediate circuit voltage (DC) is higher than the
high-voltage warning limit. The limit is dependent on the
adjustable frequency drive voltage rating. The unit is still
active.
WARNING 6, DC link voltage low
The intermediate circuit voltage (DC) is lower than the low-
voltage warning limit. The limit is dependent on the
adjustable frequency drive voltage rating. The unit is still
active.
WARNING/ALARM 7, DC overvoltage
If the intermediate circuit voltage exceeds the limit, the
adjustable frequency drive trips after a time.
WARNING/ALARM 8, DC undervoltage
If the DC link voltage drops below the undervoltage limit,
the adjustable frequency drive checks if a 24 V DC backup
supply is connected. If no 24 V DC backup supply is
connected, the adjustable frequency drive trips after a
fixed time delay. The time delay varies with unit size.
Danfoss A/S © Rev. 2014-04-10 All rights reserved.
Troubleshooting
•
Check connections on all the analog input
terminals. Control card terminals 53 and 54 for
signals, terminal 55 common. MCB 101 terminals
11 and 12 for signals, terminal 10 common. MCB
109 terminals 1, 3, 5 for signals, terminals 2, 4, 6
common.
•
Check that the adjustable frequency drive
programming and switch settings match the
analog signal type.
•
Perform input terminal signal test.
Troubleshooting
•
Check the supply voltage and supply currents to
the adjustable frequency drive.
Troubleshooting
•
Connect a brake resistor
•
Extend the ramp time
•
Change the ramp type
•
Activate the functions in 2-10 Brake Function
•
Increase 14-26 Trip Delay at Inverter Fault
•
If the alarm/warning occurs during a power sag,
use kinetic backup (14-10 Line Failure)
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