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ControlWave Instruction Manual (CI-ControlWave)
3.10 Isolated Low Level Analog Input (LLAI) Module
Low Level Analog Input (LLAI) modules provide six individually
isolated differential inputs for thermocouples or
10mV inputs plus one
cold junction compensation (CJC) input for temperature compensation
at the terminal block.
Table 3-16. Isolated Low Level Analog Input (LLAI) Module General
Characteristics
Type Number
Supported
Characteristics
Isolated Low
Level Analog
Input (LLAI)
6
Each isolated LLAI supports/includes:
Signal conditioning circuitry including a
2.5V reference
Surge suppression with a 188V
Transorb that meets IEEE standard
472-1978.
Over voltage protection
Common mode range for each channel
is 500Vdc with respect to chassis.
24-bit analog to digital converter (ADC)
Detailed Technical
Specifications
For additional technical specifications, please see document CWPAC
available on our website http://www.emersonprocess.com/remote.
Configuration
The isolated LLAI module (general part number
396877-XX-X
) has
the following configurations:
Table 3-17. Isolated Low Level Analog Input (LLAI) Module
Configurations
Part Number
Termination Connector Notes
396877-01-0
local
396877-02-8
remote
Enabling/Disabling
LEDs using jumper
The Isolated LLAI Module includes a jumper (W2) to enable/disable
LEDs on the module. Normally, you should keep the LEDs enabled,
but if power conservation is an issue, you could disable the LEDs.
Table 3-18. Jumper Assignments: Isolated LLAI Module
Jumper Purpose
Description
W2
Enables/disables LEDs on
module
Pins 1-2 installed = Enable LEDs (Factory
default
).
Pins 2-3 installed = Disable LEDs
Revised Nov-2010
I/O Modules
3-39