Mitsubishi FR-A846-00023, Инструкция по эксплуатации

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APPENDIX
147
• The following shows operations when a communication option fault occurs.
NOTE
• When a communication option is used, the protective function [E.OP1 (fault data: HA1)] is activated at error occurrences on the
communication line. The protective function [E.1 (fault data: HF1)] is activated at error occurrences in the communication circuit inside
the option.
• Fault output indicates the Fault (ALM) signal and an alarm bit output.
• When the fault output is set enabled, fault records are stored in the faults history. (A fault record is written to the faults history at a fault
output.)
• When the fault output is not set enabled, fault record is overwritten to the faults history of the faults history temporarily but not stored.
• After the fault is removed, the fault indication goes back to normal indication on the monitor, and the faults history goes back to the
previous status.
• When Pr.502

"0", the normal deceleration time setting (settings like Pr.8, Pr.44, and Pr.45 ) is applied as the deceleration time.
Normal acceleration time setting (settings like Pr.7 and Pr.44 ) is applied as the acceleration time for restart.
• When Pr.502 = "2, 3, or 4", the inverter operates with the start command and the speed command, which were used before the fault.
• If a communication line error occurs, then the error is removed during deceleration while Pr.502 = "2", the motor re-accelerates from
that point. (When a communication option is used, acceleration does not restart at a communication option error.)
• The Pr.502 and Pr.779 settings are valid when communication is performed via the RS-485 terminals or a communication option.
• These parameters are valid under the Network operation mode. When performing communication through RS-485 terminals, set
Pr.551 PU mode operation command source selection

"1".
• Pr.502 is valid for the device that has the command source under the Network operation mode. If a communication option is installed
while Pr.550 = "9999" (initial value), a communication error in RS-485 terminals occurs and Pr.502 becomes invalid.
• If the communication error setting is disabled with Pr.502 = "3 or 4", Pr.335 = "9999", and Pr.539 = "9999", the inverter does not
continue its operation with the frequency set by Pr.779 at a communication error.
• If a communication error occurs while continuous operation at Pr.779 is selected with Pr.502 = "3 or 4", the inverter operates at the
frequency set in Pr.779 even though the speed command source is at the external terminals.
Example) If a communication error occurs while Pr.339 = "2" and the RL signal is input through an external terminal, the operation is
continued at the frequency set in Pr.779 .
• During position control, an error occurs even if "2" is set in Pr.502 .
Caution

When Pr.502 = "3" and a communication line error occurs, or a Pr.502 = "4" and a communication line error or a
communication option fault occurs, the operation continues. When setting "3 or 4" in Pr.502, provide a safety stop
countermeasure other than via communication. For example, input a signal through an external terminal (RES, MRS, or X92)
or press the PU stop on the operation panel.
Time
Motor coasting
Fault ON OFF OFF
Display
ON
OFF
Fault occurrence
Fault removal
Time
Fault ON OFF OFF
Display
ON OFF
Decelerates to stop
Fault occurrence Fault removal
Pr. 502 setting "0 (initial value) or 3" Pr. 502 setting "1 or 2"
OFF OFF
Pr. 502 setting "4"
ON OFF
Display
Time
Fault
ON OFF OFF
OFF
Fault occurrence Fault removal
Pr.779 = “9999” Pr.779 = “9999” Pr.779 = “9999”
Pr.779
Output frequency Output frequency
Output frequency
Pr.779 ≠“9999”
(Runs at the frequency setting of Pr.779 )
Fault display
(E.1)
Fault output
(ALM)
Alarm output
(LF)
Warning display
(CF)
Fault output
(ALM)
Alarm output
(LF)
Fault display
(E.1)
Fault output
(ALM)
Alarm output
(LF)