Operating instructions

OI: BK MIKRO 7 Characteristics
Rev. 2.01 dated 05.02.2007 Page 3 of 32
1 Characteristics
BK MIKRO 7 is a control system suitable for tool as well as for object and free space monitoring
applications.
The complete BK MIKRO 7 system comprises
 a control unit,
 a sensor (scanner),
 a connection cable.
BK MIKRO 7 is based on existing BK MIKRO 4 design concepts for tool, object and free space
monitoring and can be used universally for different types of monitoring by the integration of
multifarious functions:
 Tool monitoring
Monitoring of the scanning position whose precise location has been previously entered by
"Teach-in", e.g. to carry out a tool check before each working cycle.
 Object monitoring, free space monitoring
Monitoring a scanning range freely selectable via two adjusting switches,
e.g. to carry out tool checks for tools with varying diameters (object monitoring),
or for ejection checks (free space monitoring).
Two types of scanners are available for various demands.
From this two different monitoring systems result.
TK7A : Scanner with mechanical backstop.
TK7RL : Scanner without mechanical backstop.
Principle of operation
The wand of the scanner scans tools, objects or critical process spaces free of potential,
in line with machine cycles.
A control unit equipped with a micro-computer triggers the movement of the wand upon an
external signal and passes the scanning result on to the machine control via relay contacts.
The galvanically isolated inputs and outputs guarantee a high degree of operational safety and
protection against interferences.
Further features
 Scanning in one direction or in both directions
 Scanning in clockwise (CW) or counter-clockwise (CCW) direction
 Two steps for scanning intensity
 Output relay contacts selectable as normally open or normally closed
 Two ranges of tolerance for "O.K." message
 Indication of the scanning result by two LEDs "O.K." and "K.O." on the control unit
 Detection of cable breaks