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The GE-Emerson IC697ALG230 Analog Input Base Converter Module includes onboard load resistors for normal input current ranges up to Ç 40 mA. If other current ranges or different resolution is required, external resistors may be used. Standard system configurations for Ç 10V and 4 to 20mA are available. These, and other lower input ranges, can be scaled to engineering units with the user scaling feature.
Converted data is presented as 2's complement (sign + 15 bits). The basic converter is 14 bits resolution (1 part in 16,384); an oversampling and averaging technique further enhances this resolution. Inputs are protected against transient and steady-state overvoltage conditions.
Analog inputs use %AI references in the programmable controller. A maximum of 8K words of %AI memory is currently available in the programmable controller. Each input channel uses one word (16 bits) of %AI memory. Field wiring is made to a removable terminal board and the module is mechanically keyed to ensure correct replacement with a similar module type in the field. I/O references are user configurable without the use of jumpers or DIP switches on the module.
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