Banner EZ-SCREEN­ Safety Light Curtain Systems - Manual (Page 37)

Manual Reset/System Test Procedure
To operate the switch (and perform a manual reset or a system test), open the normally closed (N.C.) switch for a minimum of 1/4 second
and then close it.
Manual Reset
From a Latched or Lockout condition, operating the switch results in a manual reset. Safe work procedures must require that a start-up
procedure is followed and that the individual performing the reset of the guarding device verifies that the entire hazardous area is clear of
all personnel, before performing each reset. If any area can not be observed from the reset switch location, additional supplementary
guarding must be used: at minimum, visual and audible warnings of machine start-up.
Resetting a safe guarding device must not initiate hazardous motion.
Remote (External) Test
When in RUN mode, opening this switch for more than 1/4 second will initiate a Test cycle that turns OFF the OSSD outputs and gener-
ates an internal self-test.
• Automatic (Machine) Test: An external switch, typically a normally open contact that is held closed, is used to externally generate a
test cycle of the EZ-SCREEN Type 2 and its interface. Depending on the application this switch can be a limit-style switch, a hard
contact from a relay, or an output from the machine control logic.
• Manual Test: A normally closed (N.C.) momentary type switch used for manual reset can also be used to manually initiate a test
cycle. This remote Test input may be useful for EZ-SCREEN Type 2 System setup and to verify machine control circuit operation.
WARNING: Test Function
A machine or automatic test of the EZ-SCREEN Type 2 and its interface may be required as determined
by a risk assessment and appropriate standard (for example, ISO 14121 and EN ISO 13849-1). Failure to
test the safeguarding function at appropriate intervals can lead to the loss of the safety function.
External Device Monitoring Hookup
It is strongly recommended that one normally closed and one normally open, forced-guided monitoring contact of each FSD and MPCE
be connected to the Monitoring circuit (see
Generic Wiring to FSDs (manual reset) on page 41 and Generic Wiring — Interface Module
(2-Channel EDM, Manual Reset) on page 42). If this is done, proper operation of the MPCEs will be verified.
Receiver quick disconnect pin 8 provides connection for external device monitoring. External Device Monitoring (EDM) must be wired in
one of two configurations: Power Monitoring or No EDM.
• Power Monitoring is a series-parallel connection of monitor contacts that are forced-guided (mechanically linked) from each device
controlled by the EZ-SCREEN. The monitoring contacts should transition within 200 milliseconds of the OSSD outputs switching ON
or OFF. If the transition results in an open condition on pin 8 (Reset/Test input) longer than 200 ms, a Test cycle will turn OFF the
OSSD outputs. Refer to
Generic Wiring to FSDs (manual reset) on page 41 and Generic Wiring — Interface Module (2-Channel
EDM, Manual Reset) on page 42 for Power Monitoring hookup.
EZ-SCREEN® Type 2 Light Screen Instruction Manual
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