Mitsubishi Electric FR-A700 Technical Manual page 416

(8) Stop operation selection at occurrence of communication fault (Pr. 502)
Stop operation when retry count exceeds (Mitsubishi
inverter protocol only) or signal loss detection error
occurs can be selected.
The fault output indicates fault output signal (ALM
signal) or alarm bit output.
When the setting was made to provide a fault output,
the fault description is stored into the faults history.
(The fault description is written to the faults history
when a fault output is provided.)
When no fault output is provided, the fault definition
overwrites the fault indication of the faults history
temporarily, but is not stored.
Operation at fault occurrence
Pr. 502 Setting
0 (initial value), 3*
1
2
Operation at fault removal
Pr.502 Setting
0 (initial value), 3*
1
2
* Setting value 3 is only available in
[Pr. 502] setting "0" (initial value)
Communication
OFF
fault
Fault display
(E.PUE)
Fault output
OFF
(ALM)
[Pr. 502] setting "2"
Fault occurrence
Communication
OFF
fault
Fault display
(E.PUE)
Fault output
OFF
(ALM)
Operation
Coasts to stop
Decelerates to stop
Operation
Kept stopped
Automatic restart functions
.
E700
Fault occurrence Fault removal
ON
Motor coasting
Display
ON
Fault removal
ON OFF
Decelerates
to stop
Display
After the fault is removed, the fault indication returns
to the ordinary monitor, and the faults history returns
to the preceding fault indication.
When the [Pr. 502] setting is "1 or 2", the deceleration
time is the ordinary deceleration time setting ([Pr. 8,
Pr. 44, Pr. 45]). In addition, acceleration time for restart
is the normal acceleration time ([Pr. 7, Pr. 44]).
When "2" is set in [Pr. 502], run command/speed
command at restart follows the command before an
fault occurrence.
When "2" is set in [Pr. 502] at occurrence of a
communication error and the error is removed during
deceleration, the inverter accelerates again at that
point.
Indication
E. PUE lit
E. PUE lit after stop
Indication
E. PUE
Normal display
[Pr. 502] setting "1"
Communication
OFF
fault
Time
Fault display
(E.PUE)
Fault output
(ALM)
Time
450
PARAMETER
E700 D700
Fault Output
Provided
Provided after stop
Not provided
Fault Output
Kept provided
Not provided
Fault occurrence
OFF ON
Decelerates to stop
Display
OFF
Fault removal
OFF
Time
ON