Honeywell VRX180 Specification Description, Universal Analog Input Board Specifications

Installation

2.5.3 Analog input boards

A universal Analog Input board accepts a variety of input signals from field devices.

Figure 2-1 illustrates the terminal block connections for the various inputs. One AI board can be configured to accept multiple input types.

Table 2-1 Universal Analog Input Board Specifications

Specification		Description
Input Types	mV, V, mA, T/C, RTD, and Ohms
Number of Inputs	4 per board, up to 12 boards per video recorder (48 inputs)
Signal Source		Thermocouple with cold junction compensation, for operation
		between 0 to 80º C (32 to 176º F)
		Line resistance up to 1000 ohms, T/C, mV, mA, V
		RTD, 3-wire connections, 40 ohms balanced max.
Input Impedance		10 Meg Ω for T/C, mV inputs,
		> 1 Meg Ω for volt inputs

S

l o

t

I D

T h e r m o c o u p l e i n p u t

C u r r e n t I n p u t m A

+

1

2

+

4

t o 2 0

-

1 1

C h a n n e l 4

+

*

m

A

1

0

T

/ C

,

m

V

,

V

S

o

u

r c e

-

1

-

+

9

G r o u n d T e r m i n a l

-

8

C

h a n n e l 3

G r o u n d T e r m i n a l

7

*

A

2 5 0 o h m

r e s i s t o r i s r e q u i r e d f o r t h e

i n

p

u

t r a n g

e

+

6

m V , V I n p u t s

R T D

I n p u t ( 3 w i r e s )

-

5

C h a n n e l 2

m

V

o

r V

+

+

R

T

D

4

-

s o

u

r c e

-

+

3

R

T

D

-

2

C

h a n n e l 1

G r o u n d T e r m i n a l

G r o u n d T e r m i n a l

R

T

D

1

Figure 2-1 AI Board Terminal Block Connections

10 ohm Copper

with common ground lead

Grounded lead of RTD should be connected to RTD terminal of VRX terminal block

-

+

RTD

-

+

RTD

All RTD connections are common on Universal AI board.

Figure 2-2 10 ohm Copper connections

22 Video Recorder - User Manual