Banner A-GAGE MINI-ARRAY Series - Manual (Page 4)

4
P/N 117167 rev. A
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
MINI-ARRAY ®
Two-Piece Measuring Light Screen
System Overview
1.1.2 Easy-to-Understand Diagnostic LEDs
The system provides simple, straightforward indications of sensor performance
(see Figure 1-2). See Section 3.3 for a more detailed guide to troubleshooting
system status using the diagnostic LEDs.
Emitter: 1 Red Diagnostic LED
Receiver: 3 Diagnostic LEDs (Green, Red, and Yellow)
The combined status of the Green and Red LEDs provides a simple sensor
alignment process. The Yellow LED signals a dirty lens or degraded sensor
condition (see Section 1.4).
1.1.3 Two Solid-State Outputs
The receiver has two discrete outputs (Output #1 and Output #2). Each output is
independent and can be configured for either NPN or PNP operation. The sensor
is factory-configured for NPN outputs, with Output #1 designated for vehicle
separation detection and Output #2 for sensor “health” status output. These
outputs are rated to 150 mA and are short circuit protected.
1.1.4 EIA-485 Interface
To provide sensor profiling and system status information, the receiver has a serial
EIA-485 interface. Please see Appendix A for further information.
1.1.5 Sensing Scan Time
Sensing scan time is a function of the sensor length and number of beams
interrogated (i.e. steps) per scan of the array. The models table in Section 2.1
provides scan times for the Vehicle Separation scanning application (labeled as
interlaced scanning) for each light screen size. The worst-case response time is
twice the scan time.
LED Condition ON Solid OFF Flashing (5x per second) Flashing (1x per second)
Emitter Condition
Sensor is functioning
normally
No power to emitter
Receiver is removed from
the system
One or more emitter optical
channel(s) not working
properly
LED Condition ON Solid OFF Flashing (2 Hz)
Green
Light screen is
unobstructed
Light screen is
obstructed
Non-functioning emitter
Red
Light screen is
obstructed
Light screen is
unobstructed
Non-functioning emitter
Yellow
Dirty lens (whether
light screen is blocked
or clear); will remain
ON until receiver
detects proper light
signal strength
Light signal of one or more beam(s) is degraded