ICS-TOUCH Instruction Manual
CEB00XXX-53-000
Page 13 of 43
Issue 4 19 January 2021
If the laser hazard is low and the door switches have sufficient safety integrity it may be acceptable
to use a simplified arrangement as shown below. This relies on successful operation of the door
switch and contact failures are not detected. The ICS-6-SP mismatch detector should be disabled if
this arrangement is used. The example shows a system with two doors.
Figure 4.
Coded Magnetic Interlock Switches
Coded magnetic switches supplied by Lasermet cannot be overridden by the use of a magnet. Wire
the safety circuits in the same way as described in the 'Mechanical Interlock Switches section. The
monitor contacts should not be used.
The Lasermet IS-MDC-12 is a dual channel magnetic door switch. If the mismatch detector is used in
the ICS-6-SP, any single contact failure in the door switch will be detected and the laser inhibited. In
this switch the red and blue wires are taken to the ‘A’ terminals and the black and white wires to the
‘B’ terminals. The green and yellow wires are not used.
For the highest level of safety two separate door switches may be used, one wired to the ‘A’
terminals and one to the ‘B’ terminals.
If the laser hazard is low and the door switches have sufficient safety integrity it may be acceptable
to use the simplified arrangement described in the Mechanical Interlock Switches section above.