2-32

Presence Sensing Safety Devices

Safety Light Curtains

Point of Operation Control

Typical Wiring Diagrams

Electrical Installation

Connecting the POC components is simple. Cable lengths up to

60m (196.8ft) are permitted (over-voltage protection for level 3 and

higher (IEC 801), see Technical Data). The transmitter is connected

to a 24V supply using a 7-conductor cable. The receiver is connected

to the machine control and 24V supply using a 7-conductor cable.

The maximum wire cross section is 1.5mm (0.06in) without jacket;

1mm (0.04in) with jacket. All light curtains come standard with pre-

wired mini style quick-disconnect connectors in the end-caps. The

POC requires +24V DC (± 20%) power supply, which is available

from Allen-Bradley Guardmaster.

LED Indicators

1

2

3

4

5

6 7

1

2

3

4

5

6 7

1

2

3

4

5

6 7

1

2

3

4

5

6 7

Transmitter

Receiver

NC = No Connection

Transmitter

Receiver

Power On

Output Active

(Amber)

Transmit

(Yellow)

(Green)

Output Inactive

(Red)

Weak Signal

(Amber)

Beam Break Required

(Yellow) (only with

440L-M8100)

POC (transmitter) cable pin diagram

Test Input (Transmitter)

The POC switches to the green condition after the supply voltage

has been applied, and the automatic power-up test has been

completed. If an external test is desired, a contact (normally closed)

Contact). Minimum opening duration

≥50ms.

POC connection diagram

Continuous current during closed test input: 12mA. In-rush

current when closing: 150mA (20ms).

Test input open = Testing = Outputs on receiver inactive (red).

Test input closed = No test Outputs on receiver active (green).

Sender Cable Plug

Pin

Color

Function

1

2

3

4

5

6

7

Black

White

Blue

Brown

Grey

Yellow

Green

+24V DC

0V DC

Test

Test

N.C.

N.C.

PE

1

2

3

4

5

6

7

Pin #1

Pin #2

Pin #3

Pin #4

Pin #5

Pin #6

Pin #7

Pin #1 = +24V

Pin #2 = 0V

Pin #3 = Test

Pin #4 = Test

Pin #5 = NC

Pin #6 = NC

Pin #7 = PE

Internal

Connector

Mini

Plug

1

2

3

4

5

6

7

1

2

3

4

5

6

7

POC Transmitter

Inside View of Connector

POC Transmitter

Top View of Connector

POC Transmitter

test

test contact

0V

PE

+24V

or

1

3

4

2

7