ICS-7-OEM Instruction Manual
02058-53-000
Page 5 of 29
Issue 3 19 January 2021
3
Concept
The ICS-7-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-7-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. If the system fails to arm because an interlock is open (e.g. door
open), the Arm request should be removed and the interlock closed (e.g. close the door).
The ICS-7-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’.
Eight safety interlock outputs each rated at 4A resistive, 50VDC, are provided to enable the laser,
operate door locks, or provide signals to a PLC. The interlock outputs are volt-free contacts. Seven
outputs close when the system is armed. The other output is normally closed and opens when
armed. Each output actually comprises two contacts, one for each channel, operated by different
relays. In the event of one contact failing to open, 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-7-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-7-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 ‘system disarmed’ or ‘laser off’ section of a dual message illuminated sign. They are marked as
‘System Disarmed’ on the unit.
The controller also has a pair of contacts which close to indicate that all the interlock inputs are
closed. This may be used, for example, to signal to a PLC that all doors are closed and is marked as
‘Doors Closed’ on the unit label.
The ICS-7-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 single failure of a door switch etc.
