6.5 Normal Operation
6.5.1 System Power-Up
The EZ-SCREEN powers up in one of two ways, depending on the trip/latch output configuration. If it is set for trip output, it
powers up and resets automatically; if it is set for latch output, it requires a manual reset procedure after the power-up and
sensor alignment.
Trip Output Power-Up: When power is applied, each sensor conducts self-tests to detect critical internal faults, determine
configuration settings, and prepare the EZ-SCREEN for operation. If either sensor detects a critical fault, scanning ceases,
the receiver outputs remain Off and diagnostic information displays on the sensor’s Diagnostic Display. If no faults are
detected, the EZ-SCREEN automatically enters Alignment mode, and the receiver looks for an optical sync pattern from the
emitter. If the receiver is aligned and receives 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 Power-Up: When power is applied, each sensor conducts self-tests to detect critical internal faults, determine
configuration settings, and prepare for operation. If either sensor detects a critical fault, scanning ceases, the receiver
outputs remain Off and diagnostic information is displayed on the sensor’s Diagnostic Display. If no faults are detected, the
EZ-SCREEN automatically enters Alignment mode, and the receiver looks for an optical sync pattern from the emitter. If the
receiver is aligned and receives the proper sync pattern, it begins scanning to determine the blocked or clear status of each
beam. When all beams are aligned, the Yellow Reset indicator double-flashes to indicate the EZ-SCREEN is waiting for a
manual reset. After a valid manual reset, the EZ-SCREEN enters Run mode and continues scanning.
6.5.2 Run Mode
Trip Output Configuration—If any beams become blocked while the EZ-SCREEN is running with Trip Output selected, the
receiver outputs turn OFF within the stated EZ-SCREEN response time (see
on page 12). If all the beams then
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 Configuration—If any beams become blocked while the EZ-SCREEN is running with Latch Output selected,
the receiver outputs turn OFF within the stated EZ-SCREEN response time (see
then become clear, the receiver Zone indicators will all be Green and the Reset indicator will single-flash, indicating the EZ-
SCREEN is waiting for a manual latch reset. In Latch Output operation, the outputs come back ON only when all beams are
clear and after a manual reset. The EZ-SCREEN will wait for a manual 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 through the sensor’s front window. See
on page 77 for resolution of
error/fault conditions.
6.6 Periodic Checkout Requirements
To ensure continued reliable operation, the System must be checked out periodically. Banner Engineering highly
recommends performing the System checkouts as described below. However, a Qualified Person should evaluate these
recommendations, based on the specific application and the results of a machine risk assessment, to determine the
appropriate content and frequency of checkouts.
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.
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
on page 59). 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), perform the Commissioning Checkout.
EZ-SCREEN
®
14/30 mm Safety Light Screen
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