FUNCTION CODES
Chap 5
■ Immediate synchronization mode at the start
In immediate synchronization mode at the start (d41 = 2 or 4), the inverter controls the rotation speed and position
of the follower motor to maintain the difference between the master and follower motors (hereafter called deviation)
at the time when the single motor drive operation is switched to the master-follower operation. That is, it keeps the
deviation between the integrated position pulses of the master and follower motors at zero.
If the deviation falls below the synchronization completion detection angle (specified by d77), the inverter issues an
“SY” synchronization completion signal. If synchronization is lost so that the position error exceeds 10 times of the
excessive error setting (specified by d78), the inverter shuts down its output with the
ero
alarm.
When d41 = 4 (Immediate synchronization mode at the start, with Z phase), if any incorrect count due to electrical
noise or other factors is found in the integrated count of A/B phases, the inverter corrects the error based on the Z
phase difference.
When a run command for the follower motor is turned ON, the inverter continues to monitor the motor positions
even if the master motor stops as long as the master-follower operation is not switched to the single motor drive
operation. When the master motor starts running again, the inverter restarts to control the follower motor to
maintain the Z phase difference between the master and follower motors.
Figure 5.3-23
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