Inductive and capacitive sensors - INFRA - #2

Inductive and Capacitive Senso

GENERAL SPECIFICATIONS

Connection in parallel (OR)

When connected in this way sensors can activate the common output independently, when energized. Thank to the real low leaking current, there is no actual limitation in the number of sensor that can be connected in parallel, providing that the min. current of load energized is mA.

SERIES AND PARALLEL CONNECTIONS FOR NPN O PNP SENSORS

With this kind of connection take into account as follow:

1) voltage drop (C.D.T.) for each sensor (<1,8 V);

2) maximum load current of sensors reffering to self consumption of each sensor (< 10 mA) at output load.

z o

cc cc

Z

O cc

CC

z

O cc cc

DO

■j < DO

u <

cc

ZI cc

=1 cc

DO

PNP

PNP

PNP

z

o

cc

z

cc

DO

DO

DO

u <

cc

ZI cc

=1 cc

DO

Connection in parallel (OR)

When omitting the diodes shown in the chart, use sensors with output stage, open collector type.

Z

O cc cc

Z

O cc cc

z

O cc cc

=1 CC

ZI cc

DO

RIES AND PARALLEL CONNECTIONS FOR AC SENSORS

DO

DO

DO

These connections are not advisable as they may cause anomalities.

E FOR 24 VAC SUPPLY

In sensor with 24VAC supply it is important to pay attention to the voltage drop (<6 V) at the ends of the sensor and a possible drop in the connection cables between sensor and load.

In order to have a proper voltage on the load, it is advisable to encrease supply voltage by at least 6V.

PNP

PNP PNP

Z

DO

u <

cc

DO

DO

DO

a-o-

AMPLIFIED SENSORS 10-30 VDC 4 WIRES PROGRAMMABLE OUTPUT

Thanks to the output separated from the rest of circuit, sensors so connected provide important advantages, such as the possibility of 4 output configurations (NPN-NO, NPN-NC, PNP-NO, PNP-NC) on the same model.

OUTPUT DIAGRAM

-©

-©

NPN

NC

NPN NO

WHIIE

WHIIE

-0

BLUE

BROWN

-©

PNP NC

WHITE

PNP NO

WHITE

BLACK

BROWN

BLUE

73