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ControlWave ExpressPAC Instruction Manual (CI-ControlWave EPAC)

3-12 I/O Configuration and Wiring Revised Mar-2011

3.3.7 Resistance Temperature Device (RTD) Inputs on CPU/System

Controller Board

CPU/System Controller board connector TB6 provides connection to a

3-wire 100 ohm platinum bulb RTD (using the DIN 43760 curve). The

RTD connection enters the unit through the bottom of the enclosure.

Wire the RTD according to Table 3-9 and Figure 3-4 and Figure 3-5. In

this configuration, the return lead connects to the RTD- terminal and the

two junction leads (Sense and Excitation) connect to the RTD+ and

RTD EXC terminals.

Caution

Never ground the RTD cable shield at both ends or allow it to come in

contact with metallic/conductive conduit because multiple ground paths

can cause RTD input errors.

Table 3-9. RTD Connections to CPU/System Controller Board Connector TB6

TB6 Pin Signal Function

1 RTD EXC Reference

2 RTD+ Sense

3 RTD- Return

Figure 3-4. 3-Wire RTD Temperature Input Wiring

ControlWave ExpressPAC

CPU/System Controller

Board

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Emerson Bristol ControlWave ExpressPAC Bedienerhandbuch Seite 58