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Connections – KEYENCE LK-3100 User Manual

Page 8

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8

CONNECTIONS

This section describes each terminal.

Analog

output

0 V

Analog

voltage

output (V)

Analog
current

output (mA)

0

+

24 VDC

Power
supply

24 VDC

REMOTE GND TIMING ZERO

GND ALARM GND

NEAR

FAR

Laser

emission

stop input

GND

Synchronous

(Timing)

input

AUTO

ZERO

input

F.G

GND

Alarm

NPN

output

(N.C.)

NEAR

alarm

NPN

output

(N.C.)

FAR

alarm

NPN

output

(N.C.)

GND

MON (V)

MON (mA)

13

12

11

10

14

15

1

2

3

4

5

6

7

8

9

1

1

1

1

1, 2

2

2

2

2 Power supply input terminal

3

3

3

3

3 Frame grounding (F.G.) terminal

Earth-ground this terminal.

4

4

4

4

4 Laser emission stop input

Disconnecting this terminal from the GND terminal (5, 8, 0) stops
laser emission. Use this terminal in an emergency to stop laser
emission.

6

6

6

6

6 Synchronous (timing) input

Connecting this terminal to the GND terminal (5, 8, 0) retains the
analog output value just prior to the synchronous input, and stops
laser emission.

7

7

7

7

7 AUTO ZERO input

Connecting this terminal to the GND terminal (5, 8, 0) resets the
analog output to 0 V (12 mA). The input is a one-shot input.

9

9

9

9

9 Alarm output (N.C.)

The output contact opens when measurement is impossible due to
an insufficient or excessive light quantity, or due to the target being
out of the measuring range. The output is normally closed.

A

A

A

A

A NEAR alarm output (N.C.)

The output contact opens when a target is positioned closer than the
measuring range. The output is normally closed.

B

B

B

B

B FAR alarm output (N.C.)

The output contact opens when a target is positioned further than
the measuring range. The output is normally closed.

C

C

C

C

C, D

D

D

D

D Analog voltage output

A voltage of

±10 V relative to the full measurement range is output.

+12 V is output when measuring is impossible.

C

C

C

C

C, E

E

E

E

E Analog current output

A current of 4 to 20 mA relative to the measuring range of the analog
voltage output of -10 to +10 V is output. A current of 21.6 mA is
output when measurement is impossible.