Mitsubishi Electric 800 Series Instruction Manual page 162

Pr.502
Fault type
setting
0 (initial
value)
PU disconnection,
1
Ethernet
communication
2
fault,
communication
option fault
6
0
1, 2
Option fault (when
a communication
option is used)
6
*1 When the communication error is removed during deceleration, the motor re-accelerates.
*2 When the frequency command interface is switched to the one other than NET during operation, the frequency command given from an external
device can be made valid.
• When a communication error is detected during communication through the PU connector, USB connector, or a
communication option, the Alarm (LF) signal is output to an output terminal of the inverter. (When an option fault occurs,
the LF signal is output only when "6" is set in Pr.502.)
• When a communication error is detected during communication via the Ethernet connector while Pr.1431 Ethernet signal
loss detection function selection = "2 or 3", the Alarm (LF) signal is output to an output terminal of the inverter.
NOTE
• To use the LF signal, set "98 (positive logic) or 198 (negative logic)" in any of Pr.190 to Pr.196 (Output terminal function
selection) to assign the function to the output terminal.
At fault occurrence
Operation Display
"E.PUE",
Output shutoff "E.EHR",
"E.OP1"
"E.PUE",
Output to
"E.EHR",
decelerate and
"E.OP1" after
stop the motor.
stop
Operation
continues at
"CF" warning
the frequency
*2
set in Pr.779.
Output shutoff "E. 1"
Output to
decelerate and "E. 1" after stop
stop the motor.
Operation
continues at
"CF" warning
the frequency
*2
set in Pr.779.
Fault (ALM)
Operation
signal
Output stop
ON
status
continues.
ON after stop
*1
OFF
Restart
OFF Normal
ON
Output stop
status
ON after stop
continues.
Operation
continues at
OFF
the frequency
set in Pr.779.
At fault removal
Fault (ALM)
Display
signal
"E.PUE",
"E.EHR", ON
"E.OP1"
Normal OFF
Normal OFF
"E. 1" ON
"CF" warning OFF
5. Common Settings
1
2
3
4
5
6
7
8
9
10
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