Warning and alarm displays
•
A warning is showed in the LCP along with the
warning number.
•
An alarm flashes along with the alarm number.
130BP086.11
Status
0.0Hz 0.000kW 0.00A
0.0Hz
0
Earth Fault [A14]
Auto Remote Trip
1(1)
Illustration 7.2 Alarm Example
In addition to the text and alarm code in the LCP, there are
3 status indicator lights.
Back
Can
cel
In
fo
OK
On
Alarm
Warn.
130BB467.11
Warning indicator light Alarm indicator light
Warning
On
Off
Alarm
Off
On (Flashing)
Trip-Lock
On
On (Flashing)
Illustration 7.3 Status Indicator Lights
7.4 List of Warnings and Alarms
The following warning/alarm information 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 less than 10 V from terminal 50.
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 incorrect
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
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 a faulty
device sending the signal can cause this condition.
Troubleshooting
•
Check the connections on all the analog mains
terminals.
-
Control card terminals 53 and 54 for
signals, terminal 55 common.
-
VLT
®
General Purpose I/O MCB 101
terminals 11 and 12 for signals, terminal
10 common.
-
VLT
®
Analog I/O Option MCB 109
terminals 1, 3, and 5 for signals,
terminals 2, 4, and 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 is 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
for 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 (DC) 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 (DC) 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 a certain time.
Troubleshooting
•
Connect a brake resistor.
•
Extend the ramp time.
•
Change the ramp type.
•
Activate the functions in
parameter 2-10 Brake
Function
.
Maintenance, Diagnostics, a...
VLT
®
AutomationDrive FC 301/302
40
Danfoss A/S © 07/2015 All rights reserved.
MG33AQ02
7
7
Summary of Contents for VLT AutomationDrive FC 301
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