Instruction manual

ControlWave Micro Instruction Manual (CI-ControlWave Micro)
Revised Jun-2013 I/O Modules 3-45
3.14 Isolated Resistance Temperature Device (RTD) Input Module
RTD Input modules provide a total of four inputs. Firmware detects the
RTD type (2-, 3- or 4 platinum wire) via the installation of jumper wires
on the terminal block for 2-wire and 3-wire RTDs (see Figure 3-27).
Table 3-30. Isolated RTD Input Module General Characteristics
Type Number
Supported
Characteristics
Isolated RTD
Input
4
Each isolated RTD input
supports/includes:
 Signal conditioning circuitry
 Surge protection with a 12V transorb
that meets IEEE standard 472-1978
 Over voltage protection
 24-bit analog to digital converter (ADC)
 Common mode range of 500V with
respect to chassis
 Electrical isolation of 500Vdc (channel
to channel/system bus)
 Source current to RTD limited to 330
uA
RTD Input Modules consists of an Isolated RTD Input Board with two
10-point Terminal Block Assemblies (for local termination) or two 14-
pin Mass Termination Header Block Assembly (for remote termination),
and a Cover Assembly. Each Isolated RTD Board is connected to the
unit’s Backplane via a 36-pin card edge connector.
Detailed Technical
Specifications
For detailed technical specifications, please see our website
http://www.emersonprocess.com/remote.
Configuration
The isolated RTD module (general part number 396876-XX-X) has the
following configurations:
Table 3-31. Isolated RTD Input Module Configurations
Part Number Termination Connector Notes
396876-01-3
local
396876-02-1
remote
Wiring the Module
Figure 3-27 shows field wiring assignments for locally terminated
isolated RTD modules. Figure 3-28 shows field wiring assignments for
remotely terminated isolated RTD modules.
Figure 3-28 also provides wiring diagrams for 2-wire, 3-wire, and 4-
wire RTDs to the Local RTD Module Terminal Blocks; wiring
assignments, i.e., +RTD#_3/4W, -RTD#_4W, +RTD# and –RTD# are