Watlow PPC-2000 - Manual (Page 75)

PPC-2000 User’s Guide Chapter 2: Hardware Installation
Doc.# 30002-00 Rev 2.3 Watlow Anafaze 51
Figure 2.33 Wiring 2-Wire RTDs: Input 1 and 2
Shown
Three-wire RTDs may only be used with differential analog
input modules. The single wire side of a 3-wire RTD sensor
connects to the
COM terminal, one of the double wire sides
connects to the A terminal and the other connects to the B
terminal. Both A and B terminals must be of the same desired
input, i.e., 1A and 1B . See Figure 2.34.
Figure 2.34 Wiring 3-Wire RTDs: Input 1 and 2
Shown
1A (input 1+)
1B (input 1-)
COM
2A (input 2+)
2B (input 2-)
AITB
1A (input 1+)
COM
2A (input 2+)
2B (input 2-)
1B (input 1-)
AITB
A
B COM