Table 2-1 Universal Analog Input Board Specifications; Figure 2-1 Ai Board Terminal Block Connections; Figure 2-2 10 Ohm Copper Connections - Honeywell VRX180 User Manual

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.
Specification
Input Types
Number of Inputs
Signal Source
Input Impedance
T h e r m o c o u p l e
+
-
G r o u n d T e r m i n a l
m V , V I n p u t s
+
m V o r V
s o u r c e
-
G r o u n d T e r m
Figure 2-1
Grounded lead of
RTD should be
connected to RTD
terminal of VRX
terminal block
22

Table 2-1 Universal Analog Input Board Specifications

mV, V, mA, T/C, RTD, and Ohms
4 per board, up to 12 boards per video recorder (48 inputs)
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.
10 Meg Ω for T/C, mV inputs,
> 1 Meg Ω for volt inputs
C u r r e n t I n p u t m
i n p u t
4 t o 2 0
m A
S o u r c e
T / C , m V , V
G r o u n d
*
A 2 5 0 o h m
i n p u t r a n g e
R T D I n p u t ( 3
R T D
i n a l G r o u n d
AI Board Terminal Block Connections
10 ohm Copper
with common ground lead
Figure 2-2 10 ohm Copper connections
Video Recorder - User Manual
Description
S l o t I D
A
+
*
-
T e r m i n a l
r e s i s t o r i s r e q u i r e d f o r t h e
w i r e s )
+
-
T e r m i n a l
-
+
RTD
-
+
RTD
1 2
+
- 1 1
1 0
+ 9
-
8
7
+
6
-
5
R T D
4
3
+
2
-
R T D 1
All RTD connections are
common on Universal AI
board.
C h a n n e l 4
C h a n n e l 3
C h a n n e l 2
C h a n n e l 1