Fuji Electric ALPHA7, User Manual

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CHAPTER 4 PARAMETER
4-68
Automatic Operation Setting Parameters
4
(6) Homing profile without using OT
Below is an example of the setting for returning to the home position with the home position LS
signal without the OT signal. Use this profile for mechanical configurations where one of directions
of the moving part of the mechanical system is turned on with the home position LS signal as
shown in the figure below. The starting direction for homing is automatically determined according
to the setting of PA2_10 (homing direction after reference signal detection) and the ON/OFF state
of the home position LS at which return begins.
[An example of relationship between moving range of machine and home position LS]
Moving range of machine
Reverse
rotation Forward
rotation
LS
OFF
ON
[Parameter setting example]
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 2: Condition judgment start 0 Power
09
Reverse traveling unit amount for
homing
0 [unit amount] 0 Always
10
Homing direction after reference signal
detection 0: Forward rotation
0 Power
11 Reference signal for shift operation 1: Z-phase of encoder 1 Power
12
Reference signal for homing
(Deceleration starting signal) 0: Home position LS
0 Power
13 Home position LS signal edge selection 0: Rising edge timing 0 Power
14 Home position shift unit amount 1000 [unit amount] 1000 Always
15 Deceleration operation for creep speed 1: Reverse rotation
is enabled
0 Power
16 Home position after homing completion 0 [unit amount] 0 Always
17 Home position detection range
0: Always ON after homing
completion
0 Always

PA2_13: Home position LS signal edge selection indicates selection of the edge of the home
position LS corresponding to the direction of homing.
If PA2_08 is set at “2,” use of the home position LS is assumed. Accordingly the following
conditions are included in combination conditions.
PA2_11 (Reference signal for shift operation) = 0 (home position LS) or
PA2_11 (Reference signal for shift operation) = 1 (encoder Z-phase) and PA2_12 (reference signal for
homing) = 0 (home position LS)