Banner EZ-SCREEN Low-Profile Safety Light Curtain Systems - Manual (Page 5)

P/N 1334
3
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Overview
P/N 140044 rev. E 3
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
EZ-SCREEN LP
Instruction Manual Overview
1.4 Operating Features
The Banner EZ-SCREEN LP models described by this manual
feature several standard selectable functions:
• Reduced Resolution (Floating Blanking),
• Trip or Latch Output,
• External Device Monitoring (EDM),
• Auxiliary Output — OSSD Follow or Fault,
• Scan Code setting,
• Fixed Blanking (including Remote Teach),
• Emitter Test and Fault functions,
• Inverted Display, and
• Cascading (available on SLPC.. models).
These functions are configured via DIP switches (behind the
access door on the front of each sensor) and the sensor wiring
configuration; see Sections 3 and 4.2 for more information.
The sensing resolution is determined by the emitter and receiver
model. See Section 2 for a list of model numbers.
1.4.1 Selectable Trip/Latch Output
The setting for Trip or Latch Output determines whether the
System will enter RUN mode automatically after power-up, or if
it will require a manual reset first (see Sections 1.4.8 and 4.2). If
the System is set for Trip Output, other measures must be taken
to prevent a pass-through hazard; see Section 3.1.2 and the
warning below for more information.
If Trip Output is selected, the OSSD outputs will turn ON after
power is applied and the receiver passes its internal self-test/
synchronization and recognizes that all beams are clear. They
will also automatically reset after all beams are cleared. If Latch
Output is selected, the EZ-SCREEN LP requires a manual reset
for the OSSD outputs to turn ON, whenever power is applied
(and all beams are clear), or following a blocked beam (see
Section 4.5).
1.4.2 Emitter Hookup Options
An EZ-SCREEN LP emitter can be connected either to its
own power supply or to the receiver cable, color-for-color (see
Figures 3-19 and 3-20). The color-for-color hookup allows
the emitter and receiver positions to be interchanged without
rewiring. If the color-for-color hookup is used, however, the
emitter Test function is not available.
1.4.3 External Device Monitoring (EDM)
This feature allows the EZ-SCREEN LP to monitor the status
of external devices, such as MPCEs. The choices are 1- or
2-channel monitoring, or no monitoring. EDM is used when the
EZ-SCREEN LP’s OSSD outputs directly control the MPCEs
or other external devices; see Sections 3.5.3 and 4.2 for more
information.
Auxiliary (Aux.) Output; OSSD Follow/Fault
An aux. output function is available when the receiver is
configured for 1-channel EDM. This current sourcing (PNP)
solid-state output (250 mA max.) is used for control functions
that are not safety-related; a typical use is to signal the state
of the OSSDs to a programmable logic controller (PLC). The
aux. output either follows the state of the OSSDs or provides
a fault signal (lockout = ON). DIP switch configuration and pin
2 (orange/black) connection configure this feature; see Section
3.5.5 and Figure 3-26. See Section 4.2 for information on the
emitter Fault function.
1.4.4 Remote Test Input
EZ-SCREEN LP emitters provide a Test function, selectable
by DIP switch. An external switch, typically a normally open
contact, held closed, is connected between the emitter and
24V dc (see Section 3.5.4). Opening the switch “turns off” the
emitter, simulating an interruption of one or more light beams.
This function may be useful for EZ-SCREEN LP setup and to
verify machine control circuit operation.
NOTE: The emitter Test function can not be used in a color-for-
color (“swapable”) hookup (see Figure 3-22).
1.4.5 Scan Code Configuration
The emitter and receiver may be configured to one of two Scan
Code positions (1 or 2); a receiver will recognize beams only
from an emitter with the same setting. This helps minimize the
effects of crosstalk between multiple emitter/receiver pairs, and
allows multiple pairs to operate in close proximity in certain
situations. See Sections 3.1.5 and 3.1.8 for proper mounting
configurations. The Scan Code is set via DIP switch on each
sensor; see Section 4.2 for more information. Both the emitter
and its corresponding receiver must have the same setting.
WARNING . . .
Use of Trip/Latch Output
Application of power to the EZ-SCREEN LP components, the
clearing of the defined area, or the reset of a Latch condition
MUST NOT initiate dangerous machine motion. Machine control
circuitry must be designed so that one or more initiation devices
must be engaged (i.e., a conscious act) to start the machine – in
addition to the EZ-SCREEN LP going into RUN mode. Failure to
follow these instructions could result in serious bodily injury
or death.