Fault Types - Honeywell NX series User Manual

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7.3.4.1

Fault types

In the NX frequency converter, there are four different types of faults. These types differ from each other on
the basis of the subsequent behaviour of the drive. See Table 7-3.
Fault type
symbol
Figure 7-7. Fault display
Fault type symbol
(Alarm)
(Fault)
(Fault Autoreset)
(Fault Trip)
Table 7-3. Fault types
CONTROL KEYPAD
STOP
I/Oterm
11 Output phase
T13
F T1
A This type of fault is a sign of an unusual operating
condition. It does not cause the drive to stop, nor does it
require any special actions. The 'A fault' remains in the
display for about 30 seconds.
F An 'F fault' is a kind of fault that makes the drive stop.
Actions need to be taken in order to restart the drive.
AR If an 'AR fault' occurs the drive will also stop immediately.
The fault is reset automatically and the drive tries to
restart the motor. Finally, if the restart is not successful, a
fault trip (FT, see below) occurs.
FT If the drive is unable to restart the motor after an AR fault
an FT fault occurs. The effect of the 'FT fault' is basically
the same as that of the F fault: the drive is stopped.
I/Oterm
Operation hours
FAULT
I/Oterm
Operations days
Meaning
34:21:05
STOP FAULT
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