Emerson Bristol ControlWave Express, Instruction Manual

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ControlWave Express Instruction Manual (CI-ControlWave Express)
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).
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