Mitsubishi Electric FR-A820-00046 (0.4K) Instruction Manual page 633

• The following charts show operations when a communication line error occurs.
Pr.502 = "0" (initial value)
Communication OFF
fault
Fault display
(E.SER/E.OP1)
Fault output
(ALM)
Alarm output
(LF)
Pr.502 = "2"
Communication
fault
Fault display
(E.SER/E.OP1)
Fault output
(ALM)
Alarm output
(LF)
Pr.502 = "4"
Communication
fault
Warning display
(CF)
OFF
Fault output
(ALM)
OFF
Alarm output
(LF)
632
5. PARAMETERS
5.15 (N) Communication operation parameters
Fault occurrence
ON
Motor coasting
Display
OFF
ON
OFF ON
Fault occurrence
Fault removal
OFF ON
Decelerates
to stop
Display
OFF
OFF ON
Fault recognition Fault removal
OFF ON
Pr.779 = "9999"
Pr.779 ≠"9999"
(Runs at the frequency setting of Pr.779)
Display
ON
Pr.502 = "1"
Fault removal
Communication
OFF
fault
Time
Fault display
(E.SER/E.OP1)
Fault output
(ALM)
OFF Alarm output
(LF)
Pr.502 = "3"
Communication
OFF
fault
Time
Fault display
Fault output
(ALM)
Alarm output
OFF
(LF)
OFF
Pr.779
Time
OFF
Fault occurrence
OFF ON
Decelerates
to stop
OFF
OFF ON
Fault recognition Fault removal
OFF ON
Pr.779 = "9999"
Pr.779 ≠"9999"
(Runs at the frequency setting of Pr.779)
Not displayed
OFF
OFF ON
Fault removal
OFF
Time
Display
ON
OFF
OFF
Time
OFF