LEDs and connection

 LEDs and connection 1:
EL1804, EL1814

LEDs

LED

Color

Meaning

INPUT 1- 4

green

off

"0" signal voltage (-3 V ... 5 V)

on

"1" signal voltage (11 V ... 30 V)

Connection

Terminal point

Description

Name

No.

Input 1

1

Input 1

+24 V

2

+ 24 V (internally connected to terminal point 4, 6, 8, 9, 11, 13, 15 and positive power contact)

Input 2

3

Input 2

+24 V

4

+ 24 V (internally connected to terminal point 2, 6, 8, 9, 11, 13, 15 and positive power contact)

Input 3

5

Input 3

+24 V

6

+ 24 V (internally connected to terminal point 2, 4, 8, 9, 11, 13, 15 and positive power contact)

Input 4

7

Input 4

+24 V

8

+ 24 V (internally connected to terminal point 2, 4, 6, 9, 11, 13, 15 and positive power contact)

+24 V

9

+ 24 V (internally connected to terminal point 2, 4, 6, 8, 11, 13, 15 and positive power contact)

0 V

10

0 V (internally connected to terminal point 12, 14, 16 and negative power contact)

+24 V

11

+ 24 V (internally connected to terminal point 2, 4, 6, 8, 9, 13, 15 and positive power contact)

0 V

12

0 V (internally connected to terminal point 10, 14, 16 and negative power contact)

+24 V

13

+ 24 V (internally connected to terminal point 2, 4, 6, 8, 9, 11,15 and positive power contact)

0 V

14

0 V (internally connected to terminal point 10, 12, 16 and negative power contact)

+24 V

15

+ 24 V (internally connected to terminal point 2, 4, 6, 8, 9, 11, 13 and positive power contact)

0 V

16

0 V (internally connected to terminal point 10, 12, 14 and negative power contact)