Banner EZ-SCREEN Low-Profile Safety Light Curtain Systems - Manual (Page 36)

34
P/N 133487
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Overview
34
P/N 140044 rev. E
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
EZ-SCREEN LP
Instruction Manual
Installation and Alignment
Figure 3-17. DIP switch configuration to teach fixed blanking
Fixed Blanking Configuration
1. From either normal operation or a power OFF condition, set
the first and second DIP switches (T/L and Red Res) both
to the left (Trip operation and Reduced Resolution enabled
positions). See Figure 3-17.
2. Set the third and fourth DIP switches (the second T/L and
Red Res) both to the right (Latch operation and Reduced
Resolution OFF positions).
3. The receiver should now either be in a lockout condition or
power is still OFF.
4. If power is OFF: Apply power
Lockout condition: Perform a valid reset sequence (close
the reset switch for 1/4 to 2 seconds, then reopen it).
5. Fixed Blanking configuration indicated by:
• Display sequentially displays “PFA” (program fixed
blanking active) and the number of blocked beams (“0” if
all beams are clear).
• Zone indicators active
• Reset indicator OFF
• Status indicator ON Red
6. Position object(s) to be blanked (or remove objects that will
no longer be blanked).
7. When any beams are blocked, the 7-segment display
sequentially displays “PFA” and the number of blocked
beams. The zone indicators remain active and denote the
location of blocked beams.
8. To teach the blanked beams, re-configure DIP switches for
normal operation (see Table 4-1 and Figure 4-1). Verify that
only the objects to be blanked are interrupting the defined
area. A lockout will occur if an object is moved or removed
after teaching.
9. Receiver indicates:
• Display: sequentially displays “PFC”
(PFC = Program Fixed Blanking Complete)
• Zone indicators flash approximate location of fixed
blanked area programmed
• Reset indicator single-flashing Yellow
• Status indicator single-flashing Red
10. Perform a valid reset sequence (see Step 4) or cycle power.
11. To disable fixed blanking, follow this same procedure, but
remove all objects not to be blanked at Step 6.
3.4.4 Trip Test
After optimizing the optical alignment and configuring fixed
blanking and reduced resolution (if applicable), perform the
trip test to verify the detection capability of the EZ-SCREEN
LP. This test will also verify correct sensor orientation (Section
3.1.5), identify optical short circuits (Section 3.1.6), and verify
the expected resolution for applications using reduced resolution
(Section 3.4.2). After the installation passes the trip test, the
safety outputs may be connected and the commissioning
checkout may be performed (initial installations only).
1. Select the proper test piece (see table), supplied with the
receiver.
2. Verify that the EZ-SCREEN LP is in Run mode with the
Green Status indicator ON (or flashing if reduced resolution is
enabled), all Zone indicators are Green, and the Yellow Status
indicator ON. A manual reset may be required in Latch mode
(see Sections 4.2 and 4.3).
3. Pass the specified test piece through the defined area in
three paths: near the emitter, near the receiver, and midway
between the emitter and receiver (Figure 3-18).
4. During each pass, while the test piece is interrupting the
defined area, at least one Zone indicator must be Red. The
Red Zone indicator must change with the position of the
test piece within the defined area.
• Trip Output Operation: The Status indicator must turn Red
and remain Red for as long as the test piece remains in the
defined area. If not, the installation has failed the trip test.
• Latch Output Operation: The Status indicator must turn
Red and remain Red. The Yellow Reset indicator must
remain ON steady. If the Reset indicator begins to flash at
any time while the test piece is interrupting the defined area,
the installation has failed the trip test.
If all Zone indicators turn Green or fail to follow the position
of the test piece while it is within the defined area, the
installation has failed the trip test. Check for correct sensor
orientation, reflective surfaces and unguarded areas created
due to the use of Blanking. Do not continue until the situation is
corrected.
Appropriate Test Pieces for Trip Test
Reduced
Resolution
14 mm Resolution
Models
25 mm Resolution
Models
OFF
14 mm (0.55") dia.
Model STP-13 25 mm (0.98") dia.
Model STP-16
ON (2-beam)
34 mm (1.34") dia.
Model STP-17 65 mm (2.56") dia.
Model STP-18
Cascaded systems: To test a cascaded system, test each light
screen individually, while monitoring the status indicator on the
first (master) receiver in the cascade.
With Power ON:
1. Position object(s) in the defined area.
2. Set T/L and Red Res switches as shown (do
not change SC2/SC1 or E1/E2 switch positions).
3. Press the Reset button or cycle power.
4. Reconfigure DIP switches for normal operation.
5. Press the Rest button or cycle power.
NO TE: If the EDM wiring does not match the switch
position, an EDM error occurs and fixed blanking
will not be allowed.