Banner EZ-SCREEN­ Safety Light Curtain Systems - Manual (Page 8)

6
P/N 68413 rev. A
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
EZ-SCREEN Point
Instruction Manual
Overview
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 the beam is clear . The trip
output will also automatically reset after all beam interruptions
are cleared. If latch output is selected, the EZ-SCREEN requires
a manual reset for the OSSD outputs to turn ON, after power is
applied and the beam is clear (see Section 4.2.1).
External Device Monitoring (EDM)
This feature allows the EZ-SCREEN Point to monitor the
status of external devices, such as MPCEs. The choices are
one- or two-channel monitoring, or OFF. EDM is used when the
EZ-SCREEN Point OSSD outputs directly control the energizing
and de-energizing of the MPCEs or other external devices; see
Sections 3 .7 .3 and 4 .1 for more information .
Remote Test Input
A pair of terminals is provided at the emitter (see Section
3.7.4) for an external switch, typically a normally open contact
held closed. Opening a switch connected between these two
terminals “turns off” the emitter, simulating an interruption of the
beam. This remote test input may be useful for EZ-SCREEN
Point system setup and to verify machine control circuit
operation .
Scan Code Configuration
The emitter and receiver may be configured to one of two
scan code positions (1 or 2). Scan codes enable a receiver
to recognize the beam only from an emitter with the same
scan code 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 Section
3 .3 for proper mounting configurations . The scan code is set
using the selection switch in each sensor’s configuration port;
see Section 4 .1 for more information . Both the emitter and its
corresponding receiver must be set to the identical setting .
Status Indicators
A variety of status indicators on both the system emitter and
receiver are clearly visible on each sensor’s front panel.
• Emitter: A single bi-color red/green Status indicator shows
whether power is applied, and whether the emitter
is in Run mode, Test mode, or Lockout mode. A
7-segment diagnostic display indicates specific
error or configuration conditions .
• Receiver: A bi-color red/green Beam Status indicator shows
whether the beam is aligned and clear with a
strong signal, clear but with a weak signal, or is
blocked and/or misaligned. A yellow Reset
indicator shows when the system is in Run mode
or is waiting for a reset. A bi-color red/green
Status indicator shows when outputs are ON or
OFF, or the system is in lockout mode. A
7-segment diagnostic display indicates specific
error or configuration conditions .
See Section 4 .3 for more information about specific indicator and
diagnostic display code meanings .