Leuze BCL 92, Оригинальная инструкция по эксплуатации

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Electrical connection
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5.5 Switching inputs
You can trigger a read process via switching input connections SW_IN 1 and SW_IN 2.
The function of switching inputs SW_IN 1 and SW_IN 2 is determined from the configuration, which is set,
e.g., via the
Sensor Studio configuration software (see chapter 6 "Configuration and diagnostics software -
Sensor Studio").
Depending on how the switching input is actuated, you can operate it both as NPN (low = active) as well as
PNP (high = active).
NPN actuation
• Standard setting (low = active)
• We recommend wiring a 2.2 kΩ pull-up resistor as defined cable termination.
+ 12 ... + 30 V DC
SW_IN 1/SW_IN 2
GND
+ 12 … + 30 V DC
GND
1
1 Pull-up resistor, 2.2 kΩ
Connection version NPN: standard setting (low = active); input resistance: 13.3 kΩ
Fig. 5.4: Switching input for connection variant NPN (standard setting)
PNP actuation
With the "inverted" setting (high = active), you can trigger a read process by applying a voltage of
+12 V DC … +30 V DC at SW IN.
+ 12 ... + 30 V DC
SW_IN 1/SW_IN 2
GND
GND
+ 12 … + 30 V DC
Connection version PNP: inverted setting (high = active); input resistance: 13.3 kΩ
Fig. 5.5: Switching input for connection variant PNP ("inverted" setting)