• Trip Output
Operation:
The Status Blocked indicator must turn ON Red and remain ON for as long as the test piece
remains in the
defined
area (and the Status Clear indicator OFF during the same
time).
If not, the
installation
has failed
the trip test. When the test piece is removed from the
defined
area, the Status Clear indicator must turn ON Green and
the Status Blocked indicator must go OFF.
• Latch Output
Operation:
The Status Blocked indicator must turn ON Red and remain ON for as long as the test piece
remains in the
defined
area (and the Status Clear indicator OFF during the same
time).
Both Yellow indicators must
remain ON steady, unless the top or
bottom
beam is blocked. If the top (synch) beam is blocked, both Alignment
indicators will go OFF.
If the Yellow Alignment indicators begin to
flash
at any
time
while the test piece is
interrupting
the
defined
area, the
installation
has failed the trip test. Check for correct sensor
orientation
and
reflective
surfaces. Do not
continue
until
the
situation
is corrected. In Latch Output
Operation,
the Status Blocked indicator will remain ON
until
a manual reset
is performed (both Yellow Alignment indicators will be
flashing).
WARNING: If Trip Test Indicates a Problem
If the EZ-SCREEN Type 2 System does not respond properly to the trip test, do not
attempt
to use the
System. If this occurs, the System cannot be relied on to stop dangerous machine
motion
when a person
or object enters the
defined
area. Serious bodily injury or death could result.
5. If mirrors are used in the
application:
Test the
defined
area on each leg of the sensing path (for example,
emitter
to mirror,
between mirror and receiver, see
on page 29).
Receiver
Emitter
Test Piece
Mirror
Figure 17. Trip Test with Corner Mirror
6. If the EZ-SCREEN Type 2 System passes all checks during the trip test, go on to
on page 29.
4.4 Electrical
Connections
to the Guarded Machine
Verify that power has been removed from the EZ-SCREEN Type 2 and the guarded machine. Make the permanent electrical
connections
as described in
on page 29 and
on page 30 as required by each individual
application.
Lockout/tagout procedures may be required (refer to OSHA 1910.147, ANSI Z244-1, ISO 14118, or the appropriate standard for
controlling hazardous energy). Follow relevant electrical standards and wiring codes, such as the NEC, NFPA79 or IEC 60204-1.
Supply power and the external reset switch should already be connected. The EZ-SCREEN Type 2 must also have been aligned and
passed the
Initial
Checkout, as described in
on page 25.
The
final
connections
to be made are:
• OSSD outputs
• FSD interfacing
• MPCE/EDM
CAUTION: Shock Hazard
Always disconnect power from the Banner device and the guarded machine before making any
connections
or
replacing any component. Use extreme
caution
to avoid electrical shock at all
times.
4.4.1 OSSD Output
Connections
Refer to the output
specifications
in
on page 43 and the warning below before making OSSD output
connections
and interfacing the EZ-SCREEN Type 2 to the machine.
EZ-SCREEN
®
Type 2 Light Screen
www.bannerengineering.com - Tel: 763.544.3164
29