5.4 Normal
Operation
5.4.1 System Power-Up
Trip Output Systems: When power is applied, each sensor will conduct self-tests to detect
critical
internal faults and prepare for
operation.
If either sensor detects a
critical
fault, scanning ceases, the receiver outputs remain
Off
and
diagnostic
information
is
displayed via the LEDs; see
on page 38). If no faults are detected, the receiver will look for an
optical
sync
pattern
from the
emitter.
If the receiver is aligned and receiving the proper sync
pattern,
it enters Run mode and begins
scanning to determine the blocked or clear status of each beam. No manual reset
operation
is required.
Latch Output Systems: When power is applied, each sensor will conduct self-tests to detect
critical
internal faults and prepare for
operation.
If either sensor detects a
critical
fault, scanning ceases, the receiver outputs remain
Off
and
diagnostic
information
is
displayed via the LEDs; see
on page 38). If no faults are detected, the receiver will look for an
optical
sync
pattern
from the
emitter.
If the receiver is aligned and receiving the proper sync
pattern,
it begins scanning to determine
the blocked or clear status of each beam. When all beams are aligned, the Yellow Alignment indicators will
flash
to indicate the System
is
waiting
for a manual reset.
After
a valid manual reset, the System enters Run mode and begins scanning.
5.4.2 Run Mode
Trip Output Systems: If any beams become blocked while the System is running, the receiver outputs turn
Off
within the stated System
response
time
EZ-SCREEN Type 2 Models With Response Times
on page 12). When all the beams become clear, the receiver outputs
come back ON. No resets of any kind are needed. All required machine control resets are provided by the machine control circuit.
Latch Output Systems: If any beams become blocked while the System is running, the receiver outputs turn
Off
within the stated System
response
time
EZ-SCREEN Type 2 Models With Response Times
on page 12). When all the beams become clear, the receiver Clear
Status indicator be ON Green and the Alignment indicators will
flash,
indicating
the System is
waiting
for a manual latch reset. When a
valid reset signal is received and all beams remain clear, the receiver outputs turn ON.
Internal Faults (Lockouts): If either sensor detects a
critical
fault, scanning ceases, the receiver outputs turn
Off
and
diagnostic
information
is displayed via the LEDs. See
on page 38 for
resolution
of error/fault
conditions.
5.4.3 Manual Reset Procedure
Open the reset switch for at least 1/4 second, then close it.
EZ-SCREEN
®
Type 2 Light Screen
www.bannerengineering.com - Tel: 763.544.3164
37