(N) Operation via communication and its settings
17
2
GROUP
N
• The following charts show operations when a communication option is used and a 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 of
Pr.8
,
Pr.44
, and
Pr.45
, etc.) is applied as the deceleration
time. Normal acceleration time setting (settings of
Pr.7
and
Pr.44
, etc.) 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 Ethernet connector or a communication
option.
• These parameters are valid under the Network operation mode. When performing communication via the Ethernet connector,
set
Pr.551 PU mode operation command source selection
"5".
•
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)", an Ethernet connector communication error occurs and
Pr.502
becomes
invalid.
• If the communication error setting is disabled with the settings of
Pr.502
= "3" and
Pr.1432
= "9999", the inverter does not
continue its operation at the frequency set in
Pr.779
when a communication error occurs.
• If a communication error occurs while continuous operation at the frequency set in
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
.
Time
Motor coasting
Fault
Output
frequency
Fault indication
(E.1)
Fault signal
(ALM)
ON
OFF
OFF
Displayed
ON
OFF
Fault detected
Fault cleared
Time
Fault
Output frequency
Fault indication
(E.1)
Fault signal
(ALM)
ON
OFF
OFF
Displayed
ON
OFF
Motor decelerates to stop
Fault detected
Fault cleared
Pr.502 = "0 (initial value) or 3"
Pr.502 = "1 or 2"
Alarm signal
(LF)
OFF
Alarm signal
(LF)
OFF
Pr.502 = "4"
Alarm signal
(LF)
ON
OFF
Displayed
Time
Fault
Output
frequency
Warning
indication (CF)
Fault signal
(ALM)
ON
OFF
OFF
OFF
Fault detected
Fault cleared
Pr.779
= "9999"
Pr.779
= "9999"
Pr.779
= "9999"
Pr.779
"9999"
(Operation continues at the frequency set in
Pr.779)
Pr.779
