Wiring Diagram - Spectrum Controls 1734 User Manual

2.5.1 Wiring Diagram

Refer to the following wiring diagrams for field wiring connections.
Table 2-1. Terminal Block Pinout
RTB Pin# Usage
0 Ch 0+ (Input 0)
2 Ch 0- (Input 2)
4 Ch 1+ (Input 4)
6 Ch 1- (Input 6)
Figure 2-1. Voltage, Current, and Thermocouple
White
Connector
CJC Sensor
Blue
Connector
Thermocouple
Input
The CJC sensor shown in the diagram above can only be installed across
NOTE
terminals 0 and 2.
Figure 2-2. Three-, and Four-Wire RTD
3-wire RTD
When measuring a 3-wire RTD, you must make an electrical short at the
terminal block as shown below (see external jumper connection above):
RTD Drive RTN
RTD1 0 2
RTD2 1 3
Chapter 2: Installation and Wiring
Usage
Ch 2+ (Input 1) 1
Ch 2- (Input 3) 3
Ch 3+ (Input 5) 5
Ch 3- (Input 7) 7
0
Ch 0+ Ch 2+
2
Ch 0- Ch 2-
4
Ch 1+ Ch 3+
6
Ch 1- Ch 3-
0
Ch 0+
2
Ch 0-
4
Ch 1+
6
Ch 1-
External
Jumper
Sense+ Short the following terminals for Sense-
4 2 to 6
5 3 to 7
RTB
Pin#
2-wire 24 V PWR
XMTR Supply
1
+ -
- +
3
5
+
Voltage
Input
-
7
1
Ch 2+
3
Ch 2-
5
Ch 3+
7
Ch 3-
User's Manual Pub. 0300266-02 Rev. B
2-9
4 to 20 mA
Input
4-wire RTD