List Of Warnings And Alarms - Danfoss VLT Aqua Drive FC 202 Operating Manual

Maintenance, Diagnostics, a...
Warning and alarm displays
•
A warning is shown in the LCP along with the
warning number.
•
An alarm flashes along with the alarm number.
Status
0.0Hz
Earth Fault [A14]
Auto Remote Trip
Illustration 7.2 Alarm Example
In addition to the text and alarm code in the LCP, there are
3 status indicator lights.
On
OK
Warn.
Alarm
Warning indicator light Alarm indicator light
Warning On
Alarm Off
Trip lock On
Illustration 7.3 Status Indicator Lights

7.4 List of Warnings and Alarms

The warning/alarm information in this chapter 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 from terminal 50 is <10 V.
Remove some of the load from terminal 50, as the 10 V
supply is overloaded. Maximum 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
customer wiring.
•
If the warning does not clear, replace the control
card.
MG20MD02
Operating Guide
1(1)
0.000kW 0.00A
0.0Hz
0
Off
On (flashing)
On (flashing)
Danfoss A/S © 10/2016 All rights reserved.
WARNING/ALARM 2, Live zero error
This warning or alarm only appears if programmed in
parameter 6-01 Live Zero Timeout Function. The signal on 1
of the analog inputs is less than 50% of the minimum
value programmed for that input. Broken wiring or signals
from a faulty device cause this condition.
Troubleshooting
•
Check connections on all the analog input
terminals. Control card terminals 53 and 54 for
signals, terminal 55 common. VLT
Purpose I/O MCB 101 terminals 11 and 12 for
signals, terminal 10 common. VLT
Option MCB 109 terminals 1, 3, 5 for signals,
terminals 2, 4, 6 common).
•
Check that the frequency converter programming
and switch settings match the analog signal type.
•
Perform an input terminal signal test.
WARNING/ALARM 3, No motor
No motor has been connected to the output of the
frequency converter.
WARNING/ALARM 4, Mains phase loss
A phase is missing on the supply side, or the mains
voltage imbalance is too high. This message also appears
in case of a fault in the input rectifier on the frequency
converter. Options are programmed in
parameter 14-12 Function at Mains Imbalance.
Troubleshooting
•
Check the supply voltage and supply currents to
the frequency converter.
WARNING 5, DC link voltage high
The DC-link voltage is higher than the high-voltage
warning limit. The limit depends on the frequency
converter voltage rating. The unit is still active.
WARNING 6, DC link voltage low
The DC-link voltage is lower than the low-voltage warning
limit. The limit depends on the frequency converter
voltage rating. The unit is still active.
WARNING/ALARM 7, DC overvoltage
If the DC-link voltage exceeds the limit, the frequency
converter trips after some time.
Troubleshooting
•
Connect a brake resistor.
•
Extend the ramp time.
•
Change the ramp type.
•
Activate the functions in parameter 2-10 Brake
Function.
•
Increase parameter 14-26 Trip Delay at Inverter
Fault.
WARNING/ALARM 8, DC under voltage
If the DC-link voltage drops below the undervoltage limit,
the frequency converter checks if a 24 V DC back-up
supply is connected. If no 24 V DC back-up supply is
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General
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Analog I/O
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