Bosch 6000 User's Guide Page 107

  • Download
  • Add to my manuals
  • Print
  • Page
    / 268
  • Table of contents
  • TROUBLESHOOTING
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 106
92
6000 Series Programmer's Guide
Figures A and B show the homing operation when HOMBAC is not enabled. “CW” refers to the
positive direction and “CCW” refers to the negative direction.
CCW Edge
of Home
Home Active
Region
CW Edge
of Home
Velocity
CCW
Limit
Initial
Position
CW
Limit
Position
Figure A. Homing in a CW Direction (HOMØ) with backup to home
disabled (HOMBACØ)
CCW Edge
of Home
Home Active
Region
CW Edge
of Home
Velocity
CCW
Limit
Initial
Position
CW
Limit
Position
Figure B. Homing in a CCW Direction (HOM1) with backup to home
disabled (HOMBACØ)
Positive Homing,
Backup to Home
Enabled
The seven steps below describe a sample homing operation when HOMBAC is enabled (see
Figure C). The final approach direction (HOMDF) is CW and the home edge (HOMEDG) is the
CW edge. “CW” refers to the positive direction and “CCW” refers to the negative direction.
NOTE
To better illustrate the direction changes in the backup-to-home operation, the illustrations in
the remainder of this section show the backup-to-home movements with varied velocities. In
reality, the backup-to-home movements are performed at the same velocity (HOMVF value).
Step 1
A CW home move is started with the HOMØ command at the HOMA and HOMAA
accelerations. Default HOMA is 10 revs (or volts or inches) per sec
2
.
Step 2
The HOMV velocity is reached (move continues at that velocity until home input goes
active).
Step 3
The CCW edge of the home input is detected, this means the home input is active.
At this time the move is decelerated at the HOMAD and HOMADA command values. It
does not matter if the home input becomes inactive during this deceleration.
Step 4
After stopping, the direction is reversed and a second move with a peak velocity
specified by the HOMVF value is started.
Step 5
This move continues until the CCW edge of the home input is reached.
Step 6
Upon reaching the CCW edge, the move is decelerated at the HOMAD and HOMADA
command values, the direction is reversed, and another move is started in the CW
direction at the HOMVF velocity.
Step 7
As soon as the home input CW edge is reached, this last move is immediately
terminated. The load is at home and the absolute position register is reset to zero.
CCW Edge
of Home
Home Active
Region
CW Edge
of Home
Velocity
CCW
Limit
Initial
Position
CW
Limit
Position
Figure C. Homing in a CW Direction (HOMØ) with HOMBAC1, HOMEDGØ, HOMDFØ
Page view 106
1 2 ... 102 103 104 105 106 107 108 109 110 111 112 ... 267 268

Comments to this Manuals

No comments