Setting parameters for parallel operation
57
2
Parallel operation communication check time (Pr.652)
• If the communication between the master and the slave is lost for a certain period, the converter unit assumes it is in
disconnection state and activates the protective function (E.SER) to shut off the output.
• If communication is lost for the time set in
Pr.652
while the converter unit is stopped, the signal loss detection is assumed
and the protective function (E.SER) is activated.
• When the
Pr.652
setting is 0.1 to 120 seconds, the signal loss detection is made.
• When the
Pr.652
setting is "9999", the signal loss detection is not made.
• When the
Pr.652
setting is "0", the parallel operation communication is not possible.
Parallel operation ready (Y227) signal
• When wiring to the RS-485 terminals and setting
Pr.1001
are completed, communication between the master/slave
converter units are started automatically and prepared for the parallel operation. When the converter units are ready, the
Parallel operation ready (Y227) signal turns ON.
• For the Y277 signal, set "227 (positive logic) or 327 (negative logic)" in any parameter from
Pr.190 to Pr.195 (Output
terminal function selection)
to assign the function to the output terminal.
NOTE
• Changing the terminal assignment using
Pr.190 to Pr.195 (output terminal function selection)
may affect the other
functions. Set parameters after confirming the function of each terminal.
Pr.
Name
Initial value
Setting range
Description
652
N092
Parallel operation
communication check time
1 s
0
Parallel operation communication disabled
0.1 to 120 s
Set the interval of the communication check
(signal loss detection) time.
If a no-communication state persists for the
permissible time or longer, the inverter will trip.
9999
No communication check (signal loss detection)
Содержание FR-CC2-P
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