Fuji Electric ALPHA5 Smart, User Manual

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CHAPTER 4 PARAMETER
4-62
Automatic Operation Setting Parameter
4
(5) At-start reverse rotation homing profile2
The motion occurs in the direction opposite to the homing direction after reference signal detection
(direction of home position when viewed from the reference signal for homing) to detect the
reference signal for homing (deceleration starting signal) and reference signal for shift operation.
This profile is used if the machine stopping position is larger than the reference signal for homing
or reference signal for homing.
[Parameter setting example]
PA1_
No. Name Setting
Default
value
Change
01 Control mode selection 6: Extension mode 0 Power
PA2_
No. Name Setting
Default
value
Change
06 Homing speed 500.00 [r/min] 500.00 Always
07 Creep speed for homing 50.00 [r/min] 50.00 Always
08 Starting direction for homing 0: Reverse rotation 0 Power
09
Reverse traveling unit amount for
homing
0 [units] 0 Always
10
Homing direction after reference signal
detection
0: Forward rotation 0 Power
11 Reference signal for homing 1: Encoder Z-phase 1 Power
12 Reference signal for homing 0: Home position LS 0 Power
13 Home position LS signal edge selection 0: Rising edge 0 Power
14 Home position shift unit amount 1000 [units] 1000 Always
15 Deceleration operation for creep speed 0: Reverse rotation is
disabled
0 Power
16 Home position after homing completion 0 [units] 0 Always
17 Home position detection range
0: Always ON after homing
completion
0 Always
18 Deceleration time at OT during homing 100.0 [ms] 100.0 Always
24
Selection of operation at OT during
homing
0: Reverse rotation
0 Power

Because rotation reverses in the direction opposite to the OT direction upon OT detection to
detect the reference signal for homing (deceleration starting signal) and reference signal for shift
operation, secure homing is realized. The reverse rotation after OT detection follows (2) OT
reference homing profile.

The direction of movement is defined as follows.
Forward: direction of position increase Reverse: direction of position decrease.