5.3 Description of Function Codes 5.3.9 d codes (Applied functions 2)
(*) With this machine configuration, only if d41 = 2 (master-follower operation (immediate synchronization mode at
the start (without Z-phase)), master-follower conveyor operation can be performed in forward direction by setting
the run command for the follower side to reverse rotation (REV) without “connecting as is”. If d41 = 3, 4 for this
machine configuration, and if d41 = 2, 3, or 4 in other machine configuration examples, by setting the follower side
run command to forward rotation (FWD), master-follower conveyor operation can be performed in the same
direction.
If the run command differs from the conveyor movement direction, it will be necessary to either switch the motor
wiring (e.g., U-phase-U-phase, V-phase-V-phase, W-phase-W-phase ↔ U-phase-U-phase, V-phase-W-phase, W-
phase-V-phase), or switch the run command (FWD ↔ REV).
If the rotation direction detected by the encoder differs after switching the conveyor movement direction, switch the
encoder wiring again (A-phase-A-phase, B-phase-B-phase ↔ A-phase-B-phase, B-phase-A-phase), or switch the
d14 and d59 setting values (“2” ↔ “3”).
Rotation direction
The rotation direction in master-follower operation is determined by the run command and the rotation direction
detected by the encoder for the master side and follower side. If the position synchronization system is selected,
the motor may stop due to a deviation overflow alarm (ero).
Follower side
Run command
Master side
independent
rotation detection
direction
I/O check
“4_15” polarity
Follower side
independent
rotation detection
direction
I/O check
“4_17” polarity
Follower side rotation direction when
performing master-follower operation
• Speed
synchronization
• Immediate
synchronization
mode at the start
(without Z-phase)
• Start after
synchronization
• Immediate
synchronization
mode at the start
(with Z phase)
Forward
rotation (FWD)
When FWD to
CM shorted
+: Forward
rotation (FWD)
+: Forward
rotation (FWD)
-: Reverse
rotation (REV)
-: Reverse
rotation (REV)
+: Forward
rotation (FWD)
-: Reverse
rotation (REV)
Reverse
rotation (REV)
When REV-CM
shorted
+: Forward
rotation (FWD)
+: Forward
rotation (FWD)
-: Reverse
rotation (REV)
-: Reverse
rotation (REV)
+: Forward
rotation (FWD)
-: Reverse
rotation (REV)
* If the master side rotates in the direction in which the follower side inverter stops, pulses are counted, and
therefore a deviation overflow alarm (ero) occurs. If the master side then returns in the follower side inverter
rotation direction, synchronization is resumed from the position where the deviation is 0.
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