BOS 21M-_ _ _-_ _ _ _-S4
Photoelectric Sensors
Diffuse, retro-reflective and through-beam sensors
3
english
www.balluff.com
Connections
Fig. 3: Pin configuration
Pin
Signal
BOS 21M-PAI-…-S4
BOS 21M-XI-RS31-S4
1
Operating voltage (+)
2
Switching output (Q2)
Input function test
(emitter off)
3
GND (–)
4
Switching output (Q1),
IO-Link communication
(C)
IO-Link communication
(C)
Tab. 1: Pin assignment
BOS 21M-PAI-RD30-S4 and BOS 21M-PAI-PR30-S4
Q2
2
1
4
3
+
–
Q1 / C
BOS 21M-PAI-RE30-S4
Q2
2
1
4
3
+
–
Q1 / C
BOS 21M-XI-RS31-S4
Test
2
1
4
3
+
–
C
Fig. 4: Connection diagrams
Installation
The sensor can be attached in three different ways:
– Using two M4 screws and washers with the housing
through-holes
– Using a mounting bracket (accessory)
– Using special clamps (available separately) on the
dovetail of the housing
15.4
11.8
42.7
LED gn
LED ye
*
*
29.9
6.3
1.25
49.8
4.3
4.3 (2x)
40
11
21.4
17.9
5
19.4
240°
8
1) Optical axis receiver
(for BOS 21M-…-RD…, BOS 21M-…-PR…, BOS 21M-…-RE…)
Optical axis emitter (for BOS 21M-…-RS…)
2) Optical axis emitter (for BOS 21M-…-RD…, BOS 21M-…-PR…)
Fig. 2: Dimensions
The switching distance is measured beginning at the
optical window.
The M12 connector can be rotated 240°.
Each sensor must be individually aligned.
Содержание BOS 21M-PAI-PR30-S4
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