Precision Digital PD6830 - Manual (Page 21)

PD6830 Pulse Input Rate/Totalizer Instruction Manual
21
Figure 5. NPN Open Collector Input (NPN)
Figure 6. PNP Sensor with External Power (PNP)
Figure 7. Switch Contact Input (Reed)
+3.0 V
100 kOhm
Internal Pullup
NPN
SENSOR
COM RST P+ S+ S-
INPUT LEVEL
mV V ISO
100 kOhm
Internal Pull-Down
PNP
SENSOR
Power
Supply
COM RST P+ S+ S-
INPUT LEVEL
mV V ISO
+3.0 V
100 kOhm
Internal Pullup
SWITCH
CONTACT
COM RST P+ S+ S-
INPUT LEVEL
mV V ISO