ICM-5 EOM interlock control board
The ICM-5 provides control of an interlock system primarily intended to protect
persons from accidental exposure to hazardous lasers. It is able to monitor several
doors, windows, curtains etc. fitted with safety interlock switches and disable the
laser if any are open. In this manual the term 'Door Switch' refers to any interlock
switch which may be fitted to a door, cover, window blind etc.
The versatile ICM-5 system can be connected to any number of door switches and
can indicate the status of up to 4 switches or groups of switches.
The ICM-5 has two Arm Laser inputs which can be activated by a remote pushbutton
switch or by another system. The ICM-5 will not arm unless both inputs operate
correctly and more-or-less simultaneously. When using a separate system to arm
the ICM-5, the safety integrity of the system may be enhanced by the use of two
arming control channels in the remote system.
The ICM-5 has an Enable input to which a keyswitch may be wired to prevent
unauthorised use of the system.
Three safety interlock outputs each rated at 6A resistive, 250Vac, are provided to
enable the laser, operate door locks etc. The interlock outputs are volt-free contacts
which close when the system is armed. The contacts can be configured for a variety
The ICM-5 is able to control and monitor safety power contactors which may be used
to switch laser mains supplies.
A separate changeover contact is provided for operating one or two-way illuminated
A remote master switch or master interlock system may be connected such that one
or more ICM-5's can be controlled by one central point. The master system can
prevent the ICM-5 and it's associated laser from being armed. Optionally, each ICM-
5 can indicate it's status to the master system or to a remote indication panel.
Other features include emergency stop input with indication and provision for an
entry/exit timed override option with pushbutton or coded keypad entry.