Yaskawa Motion Control G7 Drive Software - Manual (Page 30)

Date: 05/16/08, Rev: 08-05 Page 30 of 38 TM.G7SW.117
HOMING WHEN REVERSE OPERATION IS DISABLED: When reverse operation is prohibited (b1-04 = 1),
homing can be affected. The only homing routines that could be effectively used in this condition will be “Home
Forward” and ”Home Forward with Marker.” If any other homing type is selected when reverse is disabled, the
homing routine will not complete. Normally, when the home switch is activated at the beginning of a homing
routine, the drive would “back off” of the home switch. Since backing up is not allowed, the drive instead will move
forward until the next leading edge of the home switch is encountered.
If the motion type is “Rotary Absolute” P1-01 = 2, when the rising edge of the home switch is encountered, the drive
will then perform a “move to home,” which will result in more forward motion beyond the home switch. If the “home
offset” P2-06 is set to 0, the machine will move one complete revolution at the end of the homing routine.
If motion type is “Relative” or “Relative with Memory” (P1-01 = 3 or 4), when the rising edge of the home switch is
encountered, the drive simply ramps to stop and does not attempt to “move to home,” but instead simply records
the “home” position.
Figure 20: Home Positive Timing Chart, reverse prohibit, starting on home switch, relative or relative
with memory motion type (P2-01 = 2, b1-04 = 1)
Digital
Inputs
Motor
Speed
Digital
Outputs
Run Cmd
Home Cmd
C1-07
In Position
Window
(P1-08)
0 Hz
Home Switch
C1-08 (+)P2-02
During Move
Move Complete
Homing Needed
At Home
Homing Complete