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5.1
DC Devices
8026846.1K1C/2023/06/07 | SICK
Subject to change without notice
NOTICE
Only switch on the voltage supply once all electrical connections have been established
and the terminal chamber has been properly secured.
Explanation of the connection terminology used in the following tables:
BN = Brown
WH = White
BU = Blue
BK = Black
n. c. = Not connected
Q / Q = Digital output
L+ = Supply voltage (U
)
B
M = Ground
L.ON = Light switching
D.ON = Dark switching
DC: 10 ... 30 V DC,
see "Technical data", page 36
Table 4: Connection types
GTB20x-
1 = BN
2
2 = WH
3 = BU
4 = BK
3
0.14 mm
AWG26
Table 5: DC
GTB20x-
Push-pull
PNP
NPN
BN
WH
BU
BK
x4
xH
1
0.14 mm
4
AWG26
2
xx111
xx811
xxC11
Q
Q
O P E R A T I N G I N S T R U C T I O N S | GTB20
OPERATING INSTRUCTIONS
QK
1 2
3 4
< 0.3
2
0.14 ... 0.5 mm
AWG20 ... 26
(Recommenda‐
tion: Stranded
wire)
< 0.14 mm
> 0.5 mm
xx112
xx812
XXC12
+ (L+)
Q
- (M)
Q
en
Nm
2
2
2
29
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