7.3 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 adjustable frequency drive issuing an
alarm. A warning clears by itself when the abnormal
condition is removed.
Alarms
Trip
An alarm is issued when the adjustable frequency drive is
tripped, which means that the adjustable frequency drive
suspends operation to prevent adjustable frequency drive
or system damage. The motor coasts to a stop. The
adjustable frequency drive logic continues to operate and
monitor the adjustable frequency drive status. After the
fault condition is remedied, the adjustable frequency drive
can be reset. It is then ready to start operation again.
Resetting the adjustable frequency drive after trip/trip
lock
A trip can be reset in any of four 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
adjustable frequency drive continues to monitor the
adjustable frequency drive status. Remove input power to
the adjustable frequency drive, correct the cause of the
fault, and reset the adjustable frequency drive.
Warning and Alarm Displays
•
A warning is displayed 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)
Figure 7.2 Alarm Display Example
In addition to the text and alarm code in the LCP, there
are three status indicator lights.
Back
Can
cel
In
fo
OK
On
Alarm
Warn.
130BB467.11
Figure 7.3 Status Indicator Lights
Warning LED
Alarm LED
Warning
On
Off
Alarm
Off
On (Flashing)
Trip Lock
On
On (Flashing)
Table 7.4 Status Indicator Lights Explanations
Maintenance, Diagnostics an...
VLT
®
AQUA Drive FC 202
40
Danfoss A/S © 10/2014 All rights reserved.
MG20MA22
7
7