Mitsubishi Electric 800 Series Function Manual page 17

• The motor is decelerated to a stop according to the setting of Pr.111 Third deceleration time when an error occurs while
Pr.502 = "11 or 12".
Pr.502 setting
0 Output shutoff
1 to 4 Deceleration stop according to the selected deceleration time (selectable using the RT or X9 signal)
11, 12 Deceleration stop according to the setting of Pr.111
• The following charts show operations when a communication line error occurs.
Pr.502 = "0 (initial value)"
Communication
OFF
fault
Output frequency
Fault indication
(E.OP1)
Fault signal
OFF
(ALM)
Alarm signal
OFF
(LF)
Pr.502 = "2, 12"
Communication
OFF
fault
Output frequency
Fault indication
(E.OP1)
Fault signal
(ALM)
Alarm signal
OFF
(LF)
Pr.502 = "4"
Communication
OFF
fault
Output frequency
Pr.779
Warning indication
(CF)
Fault signal
OFF
(ALM)
Alarm signal
OFF
(LF)
Operation to a stop at a communication error occurrence
Fault cleared
Fault detected
ON OFF
Motor coasting
Displayed
ON
ON OFF
Fault detected Fault cleared
ON OFF
Motor
decelerates
to stop
Displayed
OFF
ON OFF
Fault detected Fault cleared
ON OFF
Pr.779 = "9999" Pr.779 = "9999" Pr.779 = "9999"
Pr.779
"9999"
(Operation continues at
the frequency set in Pr.779)
Displayed
ON OFF
(N) Operation via communication and its settings
Pr.502 = "1, 11"
Fault detected
Communication
OFF
fault
Output frequency
Time
Fault indication
(E.OP1)
Fault signal
OFF
(ALM)
Alarm signal
OFF
(LF)
Pr.502 = "3"
Fault detected
OFF
Communication
fault
Output frequency
Pr.779
Time
Not displayed
Fault indication
Fault signal
OFF
(ALM)
Alarm signal
OFF
(LF)
Time
Fault cleared
ON OFF
Motor
decelerates
to stop
Time
Displayed
ON
ON OFF
Fault cleared
ON OFF
Pr.779 = "9999" Pr.779 = "9999" Pr.779 = "9999"
Pr.779
"9999"
(Operation continues at
the frequency set in Pr.779)
Time
ON OFF
PARAMETER
2
GROUP
N
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