ICS-6-OEM Instruction Manual
01807-53-000
Page 26 of 32
Issue 5 19 January 2021
9
LED Indicators
‘Interlock’ LEDs A and B
Two LEDs are provided for each of the six Interlock Inputs and the Emergency Stop Input. Each pair
refers to an interlock switch or group of switches, depending on how the system has been wired up.
For each Interlock, a pair of yellow LEDs indicate that the interlock is open. If the contact is not used
and a wire link has been fitted, the corresponding LED will not illuminate.
If both ‘A’ and ‘B’ contacts are fitted and one LED is on, and the other off, this indicates a fault which
will be detected by the mismatch detector if it is enabled. In this event operation of the unit will be
inhibited. Please see the ‘Mismatch Detector’ section.
‘Safety Loop Complete’ A and B
These LEDs will light green when both safety circuits are complete.
The system will not arm if either or both LEDs are unlit. This may be due to any of the following:
a)
A door interlock switch is open, indicated by the ‘Input’ lights on the front panel.
b)
The emergency stop switch (if present) is activated, indicated by the ‘E Stop’ lights on the
front panel. Reset the switch to enable the system.
c)
The expansion board, if fitted, is not ready, or the termination plug has not been fitted.
d)
The safety circuit is faulty.
‘Arm’ A and B
The Arm indicators will illuminate blue when external contacts have closed in an attempt to arm the
controller. The controller will not arm if only one channel is closed, indicated by only one light being
illuminated.
‘Pre-Arm Ready’ A and B (illuminate green)
The controller will not arm if the pre-check circuits are open. This may be for any of the following
reasons:
a)
An LS-20 shutter is missing or not closed, or a dummy plug has not been fitted to an empty
LS-20 socket.
b)
There is a problem associated with an expansion board, if fitted.
c)
There is a faulty external relay or contactor, if they are fitted.
d)
If the laser has ‘laser safe’ proving contacts (see section 5.4.3), the laser is not detected in
the safe condition or is unplugged.
e)
The Output Monitor terminals have not had wire links fitted (if the terminals are unused).
The two ‘A’ terminals should have one link across them, and a second link for the two ‘B’
terminals.
