Banner EZ-SCREEN­ Safety Light Curtain Systems - Manual (Page 43)

P/N 68413 rev. A
41
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
EZ-SCREEN Point
Instruction Manual
Operating Instructions
Latch Output Configuration: If the beam becomes blocked
while the System is running with Latch Output mode selected,
the receiver outputs turn OFF within 24 ms. If the beam then
becomes clear, the receiver Beam Status indicator will be Green
and the Reset indicator will single-flash, indicating the System
is waiting for a manual latch reset. In Latch Output mode, the
outputs come back ON only when the beam is clear and after a
manual reset. The System will wait for a manual reset; when a
valid reset signal is received and the beam remains clear, the
receiver outputs turn ON. To perform a manual reset, close the
Reset switch for 1/4 to 2 seconds, then open the switch. (For
switch model MGA-KS0-1, described in Section 2, turn the key
1/4 turn clockwise, hold for 1/4 to 2 seconds, then turn the key
counterclockwise to its original position.)
Internal Faults (Lockouts): If either sensor detects a critical
fault, scanning ceases, the receiver outputs turn OFF and
diagnostic information is displayed through the sensor’s front
window. See Section 5 for resolution of error/fault conditions.
4.5 Periodic Checkout Requirements
To ensure continued reliable operation, the System should be
checked out periodically .
At every shift change, power-up and machine setup change,
the Daily checkout should be performed; this checkout may be
performed by a Designated or Qualified Person (see Section 6.4
for the procedure).
Semi-annually, the system and its interface to the guarded
machine should be thoroughly checked out; this checkout must
be performed by a Qualified Person (see Section 6.5). A copy of
these test results should be posted on or near the machine .
Whenever changes are made to the System (either a new
configuration of the EZ-SCREEN System or changes to the
machine), the Commissioning Checkout should be performed
(see Section 6.3).
4.4 Normal Operation
System Power-Up
The System will power up in one of two ways, depending on
the Trip/Latch output configuration . If the System is set for Trip
output, it will power up and reset automatically; if the System is
set for Latch output, it will require a manual reset procedure after
power-up and sensor alignment.
Trip Output Mode Power-Up: When power is applied, each
sensor will conduct self-tests to detect critical internal faults,
determine configuration settings, and prepare the System for
operation. (If either sensor detects a critical fault, scanning
ceases, the receiver outputs remain OFF and diagnostic
information is displayed through the sensor’s front window.)
If no faults are detected, the System will automatically enter
Alignment mode, with the receiver looking for an optical sync
pattern from the emitter. If the receiver is aligned and receiving
the proper sync pattern, it enters Run mode. No manual reset
operation is required .
Latch Output Mode Power-Up: When power is applied, each
sensor will conduct self-tests to detect critical internal faults,
determine configuration settings, and prepare the System for
operation. (If either sensor detects a critical fault, scanning
ceases, the receiver outputs remain OFF and diagnostic
information is displayed through the sensor’s front window.)
If no faults are detected, the System will automatically enter
Alignment mode, with the receiver looking 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 the beam. When the beam is aligned,
the Yellow Reset indicator will double-flash to indicate the
System is waiting for a manual reset. After a valid manual reset,
the System enters Run mode .
During RUN Mode
Trip Output Configuration: If the beam becomes blocked
while the System is running with Trip output mode selected, the
receiver outputs turn OFF within 24 ms (the maximum System
response time). If the beam then becomes 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 .