Spectrum Controls 140 AUI 040 00sc User Manual
Page 38
Quantum Series 140 AUI 040 00sc
40
+ Note: Channel update time is the time required for the module to acquire an input sign and update the
module’s data registers. The scan rate of the Quantum system will vary with application ladder and system
configuration.
+ When using RTDs add 3ms per channel. For 3-wire DTR configurations double the update time of wire
resistance is measured every cycle.
+ When using thermocouples the CJC calibration time will increase scan times by 150ms and channel update
times by 1ms.
+ Note: Periodic system calibration will also effect channel update times for one scan cycle.
6.5
System Resolution and Accuracy - Voltage /Current Modes
The system resolution listed below is the smallest input signal change that the ADC can detect. The resolution
level is affected by the filter frequency selected.
The resolution levels for the voltage mode and current mode apply to the full scale input ranges.
System accuracy is the total error between an actual input signal level and the module output data value.
System accuracy is effected by external wiring, signal noise, filter frequency, calibration, temperature, and
output data formats. The table below lists that system accuracy verses temperature.
Temp
Voltage Mode
Current Mode
25°C Typical
±0.03% ± 6 mV
±0.05% ±10µA
60°C Max
±0.05% ±10mV
±0.10% ± 20µA
+ Note: Accuracy calculations are based on the full scale current and voltage input range. These are 0 to 20
mA and ±10V respectively.
6.6
Range and Data Format Selection
Each of the module’s input ranges can be viewed in one of the four data in formats below. The table shows
the minimum and maximum values are equal to the under range and over range trip points.
Range
Signed 16 bit*
Unsigned 16 bit
Unsigned 12 bit
DVM
Min
Max
Min
Max
Min
Max
Min
Max
+/-0.05V
-32,767 32,767
0
65,535
0
4,095
-5,000
5,000
+/-0.5V
-32,767 32,767
0
65,535
0
4,095
-5,000
5,000
+/-2.0V
-32,767 32,767
0
65,535
0
4,095
-2,000
2,000
+/-5.0V
-32,767 32,767
0
65,535
0
4,095
-5,000
5,000
+/-10.0V
-32,767 32,767
0
65,535
0
4,095
-10,000 10,000
0..5V
-32,767 32,767
0
65,535
0
4,095
0
5,000
1..5V
-32,767 32,767
0
65,535
0
4,095
1,000
5,000
0..10V
-32,767 32,767
0
65,535
0
4,095
0
10,000
+/-20mA
-32,767 32,767
0
65,535
0
4,095
-2,000
2,000
0..20mA
-32,767 32,767
0
65,535
0
4,095
0
2,000
4..20mA
-32,767 32,767
0
65,535
0
4,095
400
2,000
Resistance 150 ohm 2/4 wire
-32,767 32,767
0
65,535
0
4,095
0
1,500
Resistance 150 ohm 3 wire
-32,767 32,767
0
65,535
0
4,095
0
1,500
Resistance 500 ohm 2/4 wire
-32,767 32,767
0
65,535
0
4,095
0
5,000
Resistance 500 ohm 3 wire
-32,767 32,767
0
65,535
0
4,095
0
5,000
Resistance 1000 ohm 2/4 wire
-32,767 32,767
0
65,535
0
4,095
0
10,000
Resistance 1000 ohm 3 wire
-32,767 32,767
0
65,535
0
4,095
0
10,000
Resistance 3000 ohm 2/4 wire
-32,767 32,767
0
65,535
0
4,095
0
30,000
Resistance 3000 ohm 3 wire
-32,767 32,767
0
65,535
0
4,095
0
30,000