6 Warnings and Alarms
6.1 Warning and Alarm Types
Warnings
A warning is issued when an alarm condition is impending
or when an abnormal operating condition is present and
may result in the frequency converter issuing an alarm. A
warning clears by itself when the abnormal condition
ceases.
Alarms
Trip
An alarm is issued when the frequency converter is
tripped, meaning that the frequency converter suspends
operation to prevent frequency converter or system
damage. The motor coasts to a stop. The frequency
converter logic continues to operate and monitor the
frequency converter status. After the fault condition is
remedied, the frequency converter can be reset. It is then
ready to restart operation.
Resetting the frequency converter after trip/trip lock
A trip can be reset in any of 4 ways:
•
Press [Reset] on the LCP.
•
Digital reset input command.
•
Serial communication reset input command.
•
Auto reset.
Trip lock
Input power is cycled. The motor coasts to a stop. The
frequency converter continues to monitor the frequency
converter status. Remove input power to the frequency
converter, correct the cause of the fault, and reset the
frequency converter.
Warning and alarm displays
•
A warning is displayed in the LCP along with the
warning number.
•
An alarm ashes 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 6.1 Alarm Display Example
In addition to the text and alarm code in the LCP, there are
3 status indicator lights (LEDs).
Back
Cancel
Info
OK
On
Alarm
Warn.
130BB467.11
Warning LED Alarm LED
Warning On O
Alarm O On (ashing)
Trip lock On On (ashing)
Illustration 6.2 Status Indicator Lights (LEDs)
6.2 Warning and Alarm Denitions
The following warning/alarm information denes each
warning/alarm condition, provides the probable cause for
the condition, and details a remedy or troubleshooting
procedure.
WARNING
UNINTENDED START
When the frequency converter is connected to AC mains,
DC supply, or load sharing, the motor may start at any
time. Unintended start during programming, service, or
repair work can result in death, serious injury, or
property damage. The motor can start with an external
switch, a eldbus command, an input reference signal
from the LCP or LOP, via remote operation using MCT 10
Set-up Software, or after a cleared fault condition.
To prevent unintended motor start:
•
Press [O/Reset] on the LCP before
programming parameters.
•
Disconnect the frequency converter from the
mains.
•
Completely wire and assemble the frequency
converter, motor, and any driven equipment
before connecting the frequency converter to
AC mains, DC supply, or load sharing.
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.
Warnings and Alarms Operating Instructions
MG34Q402 Danfoss A/S © 04/2016 All rights reserved. 83
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