Rockwell Automation 42KA User Manual
PHOTOSWITCH
IMPORTANT: SAVE THESE INSTRUCTIONS FOR FUTURE USE.
Installation Instructions
Bulletin 42KA Subminiature Flat Pack
Description
Extremely small Bulletin 42KA self contained Subminiature
Flat Pack photoelectric sensors are useful in short range
sensing applications where compact size is a primary
concern. Their fast 500s response time and compact size
make them a practical, lower-cost alternative to separate
sensors and fiber optic cables in many applications.
Most Bulletin 42KA photoelectric sensors are available with or
without a sensitivity adjustment. Models without a sensitivity
adjustment are useful in applications where maximum range is
always required. Adjustable models feature a unique cable
mounted sensitivity adjustment to allow for the smallest
possible sensor size.
Each Bulletin 42KA comes complete with mounting hardware.
General Specifications
Relative Humidity 85% max
Ambient Temperature -- 1 3 Fto131F(--25Cto+55C)
Lens Material Polycarbonate, except 42KA--T2KNTK-- A2.
Housing Material Polyester
Operating
Environment
Approvals UL listed, CSA certified, class 2 source required,
Weight 40 grams max (1.4oz)
42KA--T2KPTK--A2, 42KA--S2JPSA--A2 and
42KA--S2JNSA --A2 have vinyl chloride lenses
NEMA 1 and IP40
CE marked for applicable directives
Features
S Dual LED indicators: output energized (red), alignment
(green)
S Models with in-line sensitivity adjustment potentiometer
S Reverse polarity protection (Standard Diffuse units without
sensitivity adjustment only: 42KA--D2JNHC--A2,
42KA--D2JNHA--A2, 42KA--D2JPHC--A2,
42KA--D2JPHA--A2)
S Transient noise protection
Wiring
NPN Output
Cable
Note: Details regarding connection of Allen-Bradley Bulletin 42KA Photoelectric
sensors to Allen-Bradley programmable controllers can be found in
Publication 42BCFK-- 70.
PNP Output
Cable
Brown: 24V DC (Transmitted Beam)
12-- 24V DC (All Other Models)
Black: Output
Blue: --DC
Brown: 24V DC (Transmitted Beam)
Load
12-- 24V DC (All Other Models)
Dimensions—mm (inches)
Catalog Number:
42KA--T2KNHK --A2
42KA--T2KNFK --A2
42KA--T2KPHK --A2
42KA--T2KPFK--A2
3.5
(0.138)
1.2
(0.047)
1.5
(0.059)
Dia. 3.8
(0.149)
(0.157)
1.3
(0.051)
Optical
Axis
18
(0.708)
2
(0.078)
Receiver Light Source
4
4.5
(0.177)
Photo
Detector
12.5
(0.492)
Dia. 2.8
(0.110)
Indicators (Red = Output,
Green = Stability)
2.5
(0.098)
3.5
(0.137)
11
(0.433)
Dia. 2.3
(0.090)
2Places
3.5
(0.137)
Dia. 2.3
(0.090)
2Places
2.5
(0.098)
11
(0.433)
12.5
(0.492)
Dia. 2.8
(0.110)
(0.157)
4.5
(0.177)
Light
Source
4
Black: Output
Blue: --DC
18
(0.0708)
2
(0.078)
Optical
Axis
3.5
(0.138)
Load
1.2
(0.047)
1.5
(0.059)
Dia. 3.8
(0.149)
1
Dimensions—mm (inches) (continued)
Catalog Number:
42KA--T2KNTK --A2
42KA--T2KPSK--A2
42KA--T2KPTK--A2
Photo
Detector
Optical
Axis
6.8
(0.268)
7
(0.275)
13
(0.511)
2.9
(0.114)
7.8
(0.307)
9
(0.354)
Indicators (Red = Output,
Green = Stability)
2
(0.078)
Dia. 3.2
(0.125)
Optical
Axis
Light
Source
6.8
(0.268)
7
(0.275)
13
(0.511
)
2.9
(0.114)
7.8
(0.307)
9
(0.354)
Dia. 3.2
(0.125)
Catalog Number:
42KA--D2JNHA--A2
42KA--D2JPHA --A2
42KA--D2JNFA--A2
42KA--D2JPFA--A2
42KA--D2JNHC--A2
42KA--D2JNFC --A2
42KA--D2JPHC --A2
42KA--D2JPFC --A2
Catalog Number:
42KA--S2JNSA --A2
42KA--S2JPSA--A2
3.5
(0.137)
(0.461)
2
2.3
(0.090)
Receiver Light Source
3.5
(0.137)
0.5
(0.019)
1.2
(0.047)
1.5
0.059
Dia. 3.8
(0.149)
2
(0.078)
6.75
(0.265)
20
11.7
(0.787)
3.5
(0.137)
(0.078)
Dia. 2.8
(0.110)
Indicators
(Red = Output,
Green = Stability)
7
(0.275)
Light Source
1.3
(0.051)
(0.708)
and Photo
Detector
4.8
(0.188)
18
2
(0.078)
4.5
(0.177)
Light Source and
Photo Detector
2.3
(0.091)
2.5
(0.098)
14
(0.551)
2.9
(0.114)
19.5
(0.767)
9
(0.354)
3.5
(0.137)
3.6
(0.141)
Dia. 2.8
(0.110)
(0.177)
4.5
Dia. 2.9
(0.144)
2.3
(0.090)
2.5
(0.098)
3.5
(0.1337)
11
(0.433)
Dia. 2.3
(0.090)
2Places
Indicators
(Red = Output,
Green = Stability)
2
(0.078)
Dia. 2.8
(0.110)
Sensitivity Adjustment for:
42KA--T2KNFK --A2
42KA--T2KPSK--A2
42KA--D2JNFC --A2
42KA--S2JNSA --A2
42KA--T2KPFK--A2
42KA--D2JPFC --A2
42KA--S2JPSA--A2
42KA--D2JNFA--A2
42KA--D2JPFA--A2
Optical
Axis
(0.078)
(0.078)
300
(11.811
)
16
(0.629)
5
(0.196)
2
2
Sensor
Dia. 2.8
(0.110)
Sensitivity Adjustment
5
(0.196)
9
(0.354)
Potentiometer
Dia. 2.8
(0.110)
2
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