Page 227 - Wagp_InterfaceElectronic_Volume4_2015_US.pdf
P. 227
3
225
857-500, Wiring Material
2-Conductor DC (Mechanical Contact) 2-Conductor DC NAMUR Sensor
BN
OUT BU IN OUT
BN
24 V 24 V
3
BU
IN
POWER
POWER
0 V 0 V
NPN Transistor Output NPN Transistor Output with Pull-Up Resistor
OUT BN OUT
+
R
BN
BK −
+
BK IN
− BU
BU
24 V 24 V
IN POWER POWER
0 V 0 V
PNP Transistor Output PNP Transistor Output with Pull-Down Resistor
BN
OUT OUT
+
BN BK −
+ R
BK BU IN
−
BU 24 V
24 V
IN POWER POWER
0 V 0 V
Frequency Generator
OUT
IN
24 V
POWER
0 V
