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PHOTOSWITCH
Description
The 42FT is a compact, DIN Rail Mount Fiber Optic
Photoelectric sensor with sophisticated part detection,
diagnostic, and self-teach capabilities.
Five LED indicators provide diagnostic and alignment
information. A dynamic diagnostic output signals when margin
levels are below a predetermined threshold for seven
successive detections.
The self-teach capability allows the Bulletin 42FT to determine
an optimum sensitivity and hysteresis setting for a specific
application. The remote lockout feature can be used to help
prevent unauthorized changes to these adjustments. A switch
selectable 50ms off-delay ("pulse stretcher") is useful in high
speed applications where the output pulse must be lengthened
to allow time for the machine logic to respond.
42FT sensors are designed for DIN rail mounting. For
installation convenience, a steel mounting bracket is supplied
for separate mounting.
42FT sensors are designed for use with 2.2mm diameter
plastic fiber optic cables. An adaptor is supplied with the
Sensor to use 1.25mm diameter plastic fiber optic cables. Fiber
optic cables are held in place by a rotating collar. No tools are
required to attach or remove fiber optic cables. Special glass
fiber optic cables are also available. Over 40 compatible
standard plastic and glass fiber optic cables are available,
please refer to page 1–232 of the C112 Sensor catalog.
Features
S
Pico quick-disconnect available
S
(5) LED indicators: 0.8X to 1.6X margin and output
S
Manual or Self-Teach sensitivity adjustment
S
Manual or Self-Teach hysteresis adjustment
S
S
Visible red, green, or blue light sources
S
Selectable light or dark operate
Wiring
NPN Output
Cable
Cable
Brown: 12V-24V DC
Black: Output
Orange: Stability Output
Blue: -DC
Pink: External Set
Quick Disconnect
1
4
3
Note:
Details regarding connection of Allen-Bradley Bulletin 42FT photoelectric sensors to Allen-Bradley Programmable Controllers
can be found in publication 42-2.0.
Installation Instructions
Bulletin 42FT Self Teach Fiber Optic
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Load
Load
Remote Self
Teach Activate
Brown
Black
Blue
Features (continued)
S
Selectable 50ms off-delay output (pulse stretcher)
S
Can be DIN rail mounted or separately mounted
S
No tools required to attach or remove Fiber Optic cables
General Specifications
Output Protection Short circuit, Reverse polarity, False pulse, Transient noise
Housing Materials ABS resin, polycarbonate cover
Cable Construction 2m (6.5ft) 500V PVC jacketed 24AWG multi conductor
cable
Supplied
Adjustment screwdriver, 1.25mm diameter fiber optic cable
Accessories
adaptors
Operating
NEMA 1, 4X, 12, 13 and IP66 (IEC 529) (Mounting bracket
Environment
not NEMA 4X)
Vibration 10-55Hz, 1mm amplitude, Meets or exceeds IEC 947-5-2
Shock 30G, Meets or exceeds IEC 947-5-2
Ambient
-25°C to +55°C (-13°F to +131°F)
Temperature
Relative
85%
Humidity
Approvals UL listed and CSA certified, and CE marked for applicable
directives
Emitter LED
Visible red 660nm: 42FT-F2LNA-XX
Visible green 565nm: 42FT-F3LNA-XX
Visible blue 450nm: 42FT-F6LNA-XX
Connections
Cable:
5 conductor PVC
jacketed cable 2m (6.5ft)
42FT-F2LNA-A2
42FT-F2LPA-A2
42FT-F3LNA-A2
42FT-F3LPA-A2
42FT-F6LNA-A2
42FT-F6LPA-A2
PNP Output
Cable
Brown: 12V-24V DC
Black: Output
Orange: Stability Output
Blue: -DC
Pink: External Set
1
Brown
4
Black
3
Blue
3 pin pico quick
disconnect style
42FT-F2LNA-Y3
42FT-F2LPA-Y3
42FT-F3LNA-Y3
42FT-F3LPA-Y3
42FT-F6LNA-Y3
42FT-F6LPA-Y3
Load
Load
Remote Self
Teach Activate
Pic
o
4
1
3
1
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Table of Contents
Related Manuals for Rockwell Automation Allen-Bradley PHOTOSWITCH 42FT Series
Summary of Contents for Rockwell Automation Allen-Bradley PHOTOSWITCH 42FT Series
- Page 1 Installation Instructions PHOTOSWITCH Bulletin 42FT Self Teach Fiber Optic IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE. Description Features (continued) The 42FT is a compact, DIN Rail Mount Fiber Optic Selectable 50ms off-delay output (pulse stretcher) Photoelectric sensor with sophisticated part detection, Can be DIN rail mounted or separately mounted diagnostic, and self-teach capabilities.
- Page 2 Dimensions—mm (inches) Light Level Set Indicator (Flashes During Self Teach Button (Margin) Indicator Automatic Sensitivity Setting) (Steps Sensitivity or Hysteresis Up or Down Depending on Mode Switch Self Teach Light Selection) Mode Switch (Run, Set, Cable Clamp Light Operate/Dark Auto, Hysteresis, Sensitivity) Normal/Off Operate Switch (0.157)
- Page 3 Two RUN switch positions are provided. For applications in Self-Teach close proximity, alternate sensors should be set to alternate Self-Teach can be initiated using the pushbutton on the sensor RUN positions to reduce the possibility of crosstalk. (Local) or through an external input (Remote) in the AUTO mode.
- Page 4 from fiber optic cable to reflector. Press and release the longer blink when the upper or lower limit has been SET button twice. reached. The SET indicator blinks OFF, briefly, after each press of Set Mode Switch to AUTO or one of the RUN positions the SET button to confirm the Sensor has been set to (see the description of operation in the Mode Switch maximum sensitivity.
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