Cascade Powered Up Clear
Object is Blocking Light Screen #4
Object is Blocking Light Screen #3
Display:
OSSDs: On
Run Mode: On
Status: Green
Display: # of beams
blocked
OSSDs: Off
Run Mode: On
Status: Red
Display:
OSSDs: On
Run Mode: On
Status: Green
Display:
OSSDs: On
Run Mode: On
Status: Green
Display:
OSSDs: Off
Run Mode: On
Status: Red
Display: # of beams
blocked
OSSDs: Off
Run Mode: On
Status: Red
Display:
OSSDs: On
Run Mode: On
Status: Green
Display:
OSSDs: Off
Run Mode: On
Status: Red
Display:
OSSDs: Off
Run Mode: On
Status: Red
Display:
OSSDs: On
Run Mode: On
Status: Green
Display:
OSSDs: Off
Run Mode: On
Status: Red
Display:
OSSDs: Off
Run Mode: On
Status: Red
Figure 41. Cascade Indicator Status Conditions
7.3 Normal Operation
7.3.1 System Power-Up
When power is applied, each sensor conducts self-tests to detect critical internal faults, determine configuration settings,
and prepare the EZ-SCREEN LS 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 LS 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.
7.3.2 Run Mode
If any beams become blocked while the EZ-SCREEN LS is running, the receiver outputs turn Off within the stated EZ-
SCREEN LS response time (see
on page 24). If all the beams then become clear, the receiver outputs come
back On. No resets are needed. All required machine control resets are provided by the machine control circuit.
Internal Faults (Lockouts): If either sensor detects a critical fault, scanning ceases, the receiver outputs turn Off and
diagnostic information displays on the sensor’s Diagnostic Display. See
on page 65 for resolution of
error/fault conditions.
7.4 Periodic Checkout Requirements
To ensure continued reliable operation, the System must 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.
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 63). 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 LS System or changes to the
machine), perform the Commissioning Checkout.
EZ-SCREEN
®
LS Safety Light Screen
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61
