ICS-6-OEM Instruction Manual
01807-53-000
Page 5 of 32
Issue 5 19 January 2021
3
Concept
The ICS-6-OEM 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 ICS-6-OEM system can be connected to any number of door switches and can indicate
the status of up to 6 switches or groups of switches.
Two external volt-free contacts are required to arm the system. These might be from a PLC, for
example. When these contacts are both closed, provided the necessary interlock input conditions
are met (e.g. doors closed), the Controller will arm and enable the laser. If the Arm contacts are then
opened the system will disarm.
If any interlock input (e.g. door) is open when the external Arm contacts are closed the controller
will not arm. If the interlock is then closed the controller will still not arm. This is to prevent an
unexpected start-up of the laser. To arm the controller in this case the external Arm contacts must
be opened and reclosed once the interlock has been closed.
The ICS-6-OEM has a fully dual channel cross-checked architecture and when correctly wired can
realise a system compliant with EN ISO 13849-1 up to performance level ‘e’.
Seven safety interlock outputs each rated at 4A resistive, 50VDC, are provided to enable the laser,
operate door locks, provide signals to a PLC etc. The interlock outputs are volt-free contacts which
close when the system is armed. Each contact actually comprises two contacts in series. In the event
of one contact failing to open when the controller disarms, the other contact will open and the
system is then disabled, preventing further use and maintaining safety. The contacts can be
configured for a variety of options.
The ICS-6-OEM is able to directly control and monitor safety-rated power contactors which may be
used to switch single or three-phase laser mains supplies.
The ICS-6-OEM is able to monitor output devices such as shutters with feedback (such as Lasermet’s
LS-20 and LS-200 beam shutters).
The controller has a pair of isolated volt-free contacts which close in the disarmed state provided all
monitored devices are proven to be in the safe condition. These contacts may be used to operate
the ‘No Hazard, Laser Off’ section of a Lasermet dual message illuminated sign.
The controller also has a pair of contacts which close to indicate that all the interlock and emergency
stop inputs are closed. These may be used for example to signal to a PLC that all doors are closed,
and no emergency stop buttons are operated.
The ICS-6-OEM has a mismatch detector which, when wired to a full dual-channel system, disables
the system in the event of a mismatch between the two safety circuits. This provides protection
against the failure of a door switch etc.
