3.3 Operating Features
The Banner EZ-SCREEN LS models described in this manual feature several functions (depending on model).
3.3.1 Trip Output
The System is configured for Trip Output which allows the System to enter Run mode automatically. Other measures must
be taken to prevent a pass-through hazard; see
Reducing or Eliminating Pass-Through Hazards
and the warning below for
more information.
The OSSD outputs turn ON after power is applied, and the receiver passes its internal self-test/synchronization and
recognizes that all beams are clear. The Trip Output also automatically resets after all beams are cleared.
WARNING: Use of Automatic Start/Restart (Trip Output)
Application of power to the Banner device, the clearing of the sensing field, or the reset of an error
condition must not initiate dangerous machine motion. Machine control circuitry must be designed so
that one or more initiation devices must be engaged to start the machine (a conscious act), in addition to
the Banner device entering Run mode. Failure to follow these instructions could result in a serious injury
or death.
3.3.2 External Device Monitoring (EDM)
The External Device Monitoring (EDM) feature allows the EZ-SCREEN LS to monitor the status of external devices, such as
MPCEs. The choices are 1-channel monitoring or no monitoring. EDM is used when the EZ-SCREEN LS OSSD outputs
directly control the MPCEs or other external devices.
This feature is only available with the 8-conductor models.
3.3.3 Fault Output
The current sourcing (PNP) solid-state output (70 mA maximum) is used for control functions that are not safety related; a
typical use is to signal a lockout (fault) to a programmable logic controller (PLC). Available on both the receiver and emitter,
the output provides a fault signal (lockout = On). Interrupting (blocking) the sensing field is not considered a lockout, so the
Fault Output does not change state.
This feature is available only with 8-conductor models.
3.3.4 Scan Code Configuration
Use the scan code to allow operation of multiple pairs of emitters and receivers in close proximity without the effects of
cross-talk. The emitter and receiver may be configured to use one of two scan codes (1 or 2); a receiver recognizes light
only from an emitter with the same scan code. Set the scan code using the wiring on each sensor (see
on
page 53). The scan code is configured at power-up and remains set until the input is changed and power is cycled. Both
the emitter and its corresponding receiver must have the same setting. Cascaded emitters and receivers automatically
alternate scan codes based on the scan code of the first (master) pair.
This feature is only available with the 8-conductor models.
3.3.5 Wiring Options
The Machine Interface connection has several options, including:
• A 300 mm (1 ft) pigtail cable with an 8-pin M12/Euro-style male quick disconnect (QD)
• A 300 mm (1 ft) pigtail cable with a 5-pin M12/Euro-style male quick disconnect (QD)
• The Removable Disconnect (RD) that can mate with either a double-ended RD cordset as an interconnect between
cascaded sensors or an 8-wire flying lead RD cordset
Each connection option is intended for maximum flexibility to solve unique application requirements such as directly
connecting the EZ-SCREEN LS to remotely located safety I/O blocks. For interfacing modules or remotely located safety I/O
blocks where pin 5 of a 5-pin M12 QD is not earth ground, a 4-pin cordset where pin 5 is not physically present or is not
electrically connected can be used (such as MQDEC-406SS double-ended cordset). In such situations, earth ground must
be provided via the mounting brackets.
Additionally, an EZ-SCREEN LS emitter can be connected either to its own power supply or to the receiver cable, color-for-
color. The color-for-color wiring allows the emitter and receiver positions to be interchanged (swapped) without rewiring.
EZ-SCREEN
®
LS Safety Light Screen
www.bannerengineering.com - Tel: +1.763.544.3164
21
