Range Type And Its Limits For Output And Input Channels - Spectrum Controls Micro800 User Manual

Chapter 3: Configuring the 2085-IF4XOF4-SC Using CCW

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
0
0 to 20 mA
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
0 to 20 mA 0.0 mA
4 to 20 mA +3.92 mA
-10 to 10 V -10.5 V
0 to 10 V 0.0 V
0 to 5 V 0.0 V
Note
Default
Low Range
0.0 mA
+4.0 mA
-10.0 V
0.0 V
0.0 V
User's Manual Pub. 0300307-01 Rev. A
High Range High Limit
+20.0 mA +20.4 mA
+20.0 mA +20.4 mA
+10.0 V +10.5 V
+10.0 V +10.5 V
+5.0 V +5.25 V
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