Micromod MOD: 30ML Installation - Manual (Page 18)

MOD 30ML Multiloop Controller
PRODUCT DESCRIPTION
1.4 I/O MODULES
The descriptions included in this section give a brief overview of the functions and features of
the I/O modules.
1.4.1 2001A Voltage Input Module
The voltage input module provides dual ranges of ±10V dc and ±100 mV dc selectable by
configuration. Input to the module is scaled and then applied to an integrating analog to
digital converter. Line cycle integration can be performed at either 50 or 60 Hz line
frequencies to reject any line frequency noise. Transformer isolation from the +5 volt supply
is used to derive all the internal voltages to run the isolated front end. Optical isolation is
used to transfer the information from the A/D converter serially to the microprocessor. The
microprocessor takes the raw A/D voltage, compares it to the reference, and then presents it
to the host as requested over the serial communications bus. This module uses the
Voltage/Current Input Module (VCIM) Block for configuration of input parameters.
VCIM
Catalog Number Description for 2001A
BASE NUMBER 2001A Voltage Input Module
UNUSED
Z Unused Character
ELECTRICAL CODE 10
General Purpose
INPUT RANGE
10 ±100 mV or ±10 Vdc
ISOLATION 1 Isolated
MODEL
B Design Level
Sample Number
2001AZ10101B
1.4.2 2002A Current Input Module
The current input module is identical to the voltage input module except for the
addition of a 250 ohm resistor across the two input leads. This allows the
standard 4-20 mA DC input range to be accommodated by the module. This
module uses the Voltage/Current Input Module (VCIM) Block for configuration
of input parameters.
VCIM
Catalog Number Description for 2002A
BASE NUMBER 2002A Current Input Module
UNUSED
Z Unused Character
ELECTRICAL CODE 10
General Purpose
INPUT RANGE
10 4 – 20 mA
ISOLATION 1 Isolated
MODEL
B Design Level
Sample Number
2002AZ10101B
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