Banner EZ-SCREEN SLS, Instruction Manual

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May 22, 2023
EZ-SCREEN SLS Safety Light Curtain Instruction Manual
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The most common form of EDM is 1-channel monitoring; its primary advantages are simplicity of wiring and the ability to use
the Auxiliary output. The installation must prevent short circuits across the N.C. monitoring contacts and to secondary
sources of power.
Two-channel monitoring has the ability to detect additional failures, such as short circuits, and should be used when those
failures can not be designed out or reasonably be excluded. Two-channel monitoring is also the default setting and has the
advantage on additional diagnostic capability that can identify which specific element has slowed or failed.
If not connected previously, it is again strongly recommended that one normally closed, forced-guided monitoring contact of
each FSD and MPCE be wired as shown in the monitoring circuit (see "Generic Wiring Diagrams" on page 47 . Pins 2 and 3
of the receiver connector provide connection for the external device monitoring input. External device monitoring (EDM) must
be wired in one of three configurations described below and this wiring configuration must agree with the receiver’s EDM DIP
switch settings (see
" System Configuration Settings " on page 53 ).
One-Channel Monitoring: This is a series connection of closed monitor contacts that are forced-guided (mechanically linked)
from each device controlled by the EZ-SCREEN SLS . The monitor contacts must be closed before the EZ-SCREEN SLS can
be reset and the OSSDs can turn ON. After a reset is executed and the safety outputs (OSSDs) turn ON, the status of the
monitor contacts are no longer monitored and may change state. However, the monitor contacts must be closed within 250
milliseconds of the OSSD outputs going from ON to OFF. Refer to "Generic Wiring Diagrams" on page 47 . Connect the moni-
tor contacts b24 V dc and EDM (orange wire, pin 9).
Safety Output
Closed
Open
OFF
ON
EDM
Don’t Care Don’t Care Don’t Care Don’t Care
For EZ-SCREEN SLS receivers with a date code prior to 0834, the monitoring contacts must open within 200 milliseconds of
the OSSD outputs turning ON (a clear condition) and must close within 200 milliseconds of the OSSD outputs turning OFF (a
blocked condition) or a lockout will occur.
Two-Channel Monitoring: This is an independent connection of closed monitor contacts that are forced-guided (mechanically
linked) from each device controlled by the EZ-SCREEN. The monitor contacts must be closed before the EZ-SCREEN can
be reset and the OSSDs can turn ON. Regardless of the state of the OSSDs, the monitor contacts may change state (either
both open, or both closed). If the monitor contacts remain in opposite states for more than 250 milliseconds, a lockout oc-
curs.
Safety Output
Don’t Care
Closed
Open
Closed
Open
EDM 1
EDM 2
Safety Output
Closed
Open
Closed
Open
OFF
ON
EDM 1
EDM 2
Must Match EDM 1 Must Match EDM 1
Must Match EDM 2 Must Match EDM 2
Must Match EDM 1 Must Match EDM 1
Must Match EDM 2 Must Match EDM 2
Refer to the figures above for 2-channel EDM wiring. Connect the monitor contacts as shown b24 V dc and EDM1
(pin 3) and b24 V DC and EDM2 (pin 2).
For EZ-SCREEN receivers with a date code prior to 0834, the monitoring contacts must always close within 200 milliseconds
of the corresponding OSSD state change (turning OFF) or a lockout will occur.
External Device Monitoring Wiring
2-Channel EDM Wiring Figure 21.
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