Operating instructions

BK MIKRO 7 with scanner TK7RL – Scanning in both directions OI: BK MIKRO 7
Page 22 of 32 Rev. 2.01 dated 05.02.2007
5.1 Teach mode = monitoring with learning function
Requirement: Rotary switches P1=0 and P2=0
The scanning ranges will be determined by a learning cycle (external control signal).
This mode of operation is the typical mode for tool detection applications:
The system will check for the presence of the tools at the learned positions.
5.1.1 "Teach-in", the learning cycle
The scanner will first travel from its initial position with its selected speed in the preset direction.
If a tool is detected, its position will be stored.
Then the wand will travel in opposite direction with its preset speed
to determine the position of the second tool, and also store this position.
 Using this two positions the system will calculate the new zero position of the wand as
the center between the two tools.
Finally the wand will turn into its zero position, the stop position, and will be held there
by applying a low voltage. In addition the "O.K." relay will be activated.
 If the system can detect only one tool or not a single one, the "K.O." relay will be activated.
After such a faulty learning action, the wand will return to its old stop position.
Following "Start" pulses will detect "K.O.".
Learning cycle with CW-CCW travel
The figure shows a learning cycle with setting:
Switch "R" and S1=0, S2=0, i.e.
first CW travel, then CCW travel of the scanner.
v
max
= max. speed of scanner
v
S
= speed of scanner preset by
"Scanning intensity" toggle switch
Fig. 5-2: "Teach-in" for scanning in both directions
Note:
Positions learned during "Teach-in" will remain stored, even after removal
of power to the unit.
No changes after "Teach-in" and before "Start" mode, concerning:
 Tool geometry (layout and dimensions)
Changes of S1/S2 selection inputs or "CW/CCW" toggle switch are allowed
after "Teach-in".
"CW"
Initial position
"CCW"
Object 1
Object 2
Vmax
Vs
Vs
"learned" positions
Stop position