Description of the I/O Modules

Excel 800

Analog Input Modules

Terminals

Types of Analog Input Modules

Table 25. Excel 800 Analog Input Modules

type

description

housing

XF821

Panel Bus Analog Input Module

light-gray

 

 

 

XFL821

LONWORKS Bus Analog Input

dark-gray

 

Module

 

 

 

 

XS821-822

terminal socket

light-gray

 

 

 

Features

71 COMA

72 COMB

73 V~24

74 V~024

VAUX VAUX

21

22

GND GND

9 10

AI1

AI2

AI3

AI4

AI5

AI6

AI7

AI8

1

2

3

4

5

6

7

8

 

 

 

 

 

 

 

 

 

GND

GND

GND

GND

GND

GND

GND

GND

11

12

13

14

15

16

17

18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM

75

A

COM 76 B

V~24

77

V~024

78

25 26

8 analog inputs

Sensor-break and short-circuit detection, see section "Troubleshooting" on page 31.

Fig. 35. XF821AU Analog Input Module with terminal

socket

Legend

1Service button S1

2Hex switch S2

3Service LED

4Power LED

Functionality of service LED and power LED: see Table 42 and following.

Fig. 36. Terminal assignment and internal connections of

Analog Input Modules

Table 26. Description of Analog Input Module terminals

 

ter-

 

signal

 

comment

 

minal

 

 

 

 

 

 

 

71, 75

 

COM a

 

2-wire communication bus

 

 

(LON/Panel Bus)

 

 

 

 

 

72, 76

 

COM b

 

2-wire communication bus

 

 

(LON/Panel Bus)

 

 

 

 

 

73, 77

 

24 V~

 

Power supply

74, 78

 

24 V~0

 

Power supply

 

1 ─ 8

 

AI1 ─ AI8

Analog inputs 1 ─ 8

 

9 ─ 18

 

GND

 

Ground. All grounds are connected

 

 

 

internally to each other

 

 

 

 

 

 

 

 

 

 

Auxiliary voltage signal (used e.g. for

21, 22

 

10 VDC /

 

supplying setpoint potentiometers).

 

5 mA

 

Connections to these terminals

 

 

 

 

 

 

 

 

 

must be made in the same room.

25, 26

 

 

 

Shield connection (functional earth),

 

 

 

internally connected to the DIN rail

 

 

 

 

 

NOTE:

 

Shield connection to be used for shielded I/O

 

 

 

cables only. It is not allowed to connect a

 

 

 

LONWORKS shield.

EN1B-0410GE51 R0908A

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Honeywell XL 800 SERIES manual Terminals Types of Analog Input Modules, Features

XL 800 SERIES specifications

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