Spectrum Controls 2085-IF4XOF4-SC, User Manual

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Chapter 3: Configuring the 2085-IF4XOF4-SC Using CCW 3-23
User’s Manual Pub. 0300307-01 Rev. A
3.7.1 Range Type and its limits for Output and Input Channels
Range Types
For module outputs, this module has one 4-channel DAC equipped with 4
programmable output drivers. For module inputs, multiplexed ADC and PGA are
used. Both are configured and set based on user-configurable parameters.
There are five pre-defined Range Type Format settings used for Output and Input
Channels. Range types for output and input channels are:
Index Range Type Note
0
0 to 20 mA Default
1 4 to 20 mA
2
-10 to 10 V
3 0 to 10 V
4
0 to 5 V
The final current or voltage output signal and input signal are determined by:
• Range.
• Data Format (fixed or user-defined).
• Output Word (Output channel only).
• ADC Filter (Input channel only).
• Operational state of the module:
- Run
- Program
- Fault
Range Limits by Software Controls
Regardless of the final scaled value, the output and input signals clipped to a
High and Low Limit by software are based on the following table:
• The High and Low Range values indicate the intended use of the Range.
• The Current Ranges allow for a 2% overhead at each Range endpoint.
• The Voltage Ranges allow for a 5% overhead at each Range endpoint.
• Ranges with a 0 mA or 0 V Low Range are clipped at 0 mA or 0 V and
do not go negative.
The following table provides range limits for input and output channels:
Range Type Low Limit Low Range High Range High Limit
0 to 20 mA 0.0 mA 0.0 mA +20.0 mA +20.4 mA
4 to 20 mA +3.92 mA +4.0 mA +20.0 mA +20.4 mA
-10 to 10 V
-10.5 V -10.0 V +10.0 V +10.5 V
0 to 10 V 0.0 V 0.0 V +10.0 V +10.5 V
0 to 5 V
0.0 V 0.0 V +5.0 V +5.25 V