Warning And Alarm Types; Warnings; Alarm Trip; Alarm Trip-Lock - Danfoss VLT HVAC Drive FC 102 Operating Instructions Manual

Diagnostics and Troubleshoo...
Trip
Trip lock
Table 7.3 Operation Status
NOTICE
In auto/remote mode, the frequency converter requires
external commands to execute functions.
7 7

7.2 Warning and Alarm Types

The frequency converter monitors the condition of its
input power, output, and motor factors as well as other
system performance indicators. A warning or alarm does
not necessarily indicate a problem internal to the
frequency converter itself. In many cases, it indicates failure
conditions from:
•
input voltage
•
motor load
•
motor temperature
•
external signals
•
other areas monitored by internal logic
Investigate as indicated in the alarm or warning.

7.2.1 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 is
removed.

7.2.2 Alarm Trip

An alarm is issued when the frequency converter is
tripped, that is, 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 monitors the
frequency converter status. After the fault condition is
remedied, reset the frequency converter. It is then ready to
start operation again.
A trip can be reset in any of 4 ways:
56
Operating Instructions
An alarm occurred and the motor is stopped.
Once the cause of the alarm is cleared, the
frequency converter can be reset manually by
pressing [Reset] or remotely by control
terminals or serial communication.
An alarm occurred and the motor is stopped.
Once the cause of the alarm is cleared, power
must be cycled to the frequency converter.
The frequency converter can then be reset
manually by pressing [Reset] or remotely by
control terminals or serial communication.
Danfoss A/S © Rev. 2014-07-29 All rights reserved.
•
Press [Reset] on the LCP
•
Digital reset input command
•
Serial communication reset input command
•
Auto reset

7.2.3 Alarm Trip-lock

An alarm that causes the frequency converter to trip-lock
requires that input power is cycled. The motor coasts to a
stop. The frequency converter logic continues to operate
and monitors the frequency converter status. Remove
input power to the frequency converter and correct the
cause of the fault, then restore power. This action puts the
frequency converter into a trip condition as described in
chapter 7.2.2 Alarm Trip and may be reset in any of the 4
ways.
Status
0.0Hz
!Live zero error [W2]
Off Remote Stop
Illustration 7.2 Warning Display
An alarm or trip-lock alarm flashes in the display along
with the alarm number.
Status
0.0Hz
Earth Fault [A14]
Auto Remote Trip
Illustration 7.3 Alarm Display
In addition to the text and alarm code in the display, there
are 3 status indicator lights.
!1(1)
0.000psi 0.00A
0.0Hz
1:0 - Off
1(1)
0.000kW 0.00A
0.0Hz
0
MG16I202