Operating instructions

System Components OI: BK MIKRO 7
Page 12 of 32 Rev. 2.01 dated 05.02.2007
2.2 Scanner
2.2.1 Characteristic properties
The scanner housing is cylindrical and smooth, thus permitting easy installation (e.g. by using
the mounting bracket). The scanner is designed for easy access for servicing and changing
the wand. Aligning the scanner is easy and requires no additional instruments or aids.
We offer two types of scanners for the different applications.
The sole difference between the two scanners is that the rotary movement of TK7A's wand
is limited by a screw inside the housing, the mechanical backstop.
TK7A – Scanner with mechanical backstop
Requirement: "Scanner" switch on control unit set to "TK7A"
Scanner for scanning in one direction: clockwise or counter-clockwise
When a supply voltage is applied, the scanner will always move to its mechanical backstop,
the so-called stop position. The scanner will be held in this position by applying a low voltage
until a pulse on the "Teach" or "Start" screw triggers a scanning cycle.
TK7RL – Scanner without mechanical backstop
Requirement: "Scanner" switch on control unit set to "TK7RL"
Scanner for scanning in both directions: CW-CCW or CCW-CW, in special cases for scanning
in one direction: CW or CCW
When a supply voltage is applied, the scanner persists in its momentary position. It can be
turned to an other position by hand. Only after a pulse on the "Teach" or "Start" screw,
it moves into its stop position, that was calculated just now, and will be held there by applying
a low voltage.
Using scanners TK7A and TK7RL with a different control unit than BK MIKRO 7 may damage the
scanner and control unit.
Warning
Note:
 Due to its small diameter, a wand is easily overlooked.
 Your wand is a wearing part! Each contact with a rotating object will
cause corresponding wear on the wand. This may even lead to the
metal wand breaking.
Due to the injury hazard this causes, users should exercise particular caution within any
BK MIKRO rotating area.