DL205 Analog Manual, 7th Edition Rev. D
16-3
Chapter 16: F2-8AD4DA-2, 8-Ch. In / 4-Ch. Out Analog Voltage Combination
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The following tables provide the specifications for the F2-8AD4DA-2 Analog Current Input/
Output Module. Review these specifications to be certain that it will meet the requirements
of your application.
NOTE: The values listed for Sample Duration Time and Conversion Time are for a single channel, and do
not include PLC scan times.
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Input Specifications
Number of Input Channels
8, single ended (one common)
Input Range
0–5V, 0–10V
Input Resolution / Value of LSB
12, 14, or 16 bit; selectable
12 bit, 0–5V = 1.22 mV
12 bit, 0–10V = 2.44 mV
14 bit, 0–5V = 305 μV
14 bit, 0–10V = 610 μV
16 bit, 0–5V = 76 μV
16 bit, 0–10V = 152 μV
Input Impedance
1Mq, ±5%
Maximum Continuous Overload
±100V
Filter Characteristics
Active low pass; -3 dB @ 80Hz
PLC Input Update Rate
8 channels per scan (max. with pointers; local base)
Sample Duration Time (note)
2ms @ 12 bit; 5.52ms @ 14 bit; 23ms @ 16 bit
Conversion Time (note)
12 bit = 1.5ms per channel
14 bit = 6ms per channel
16 bit = 25ms per channel
Conversion Method
Over sampling successive approximation
Accuracy vs. temperature
25ppm / °C maximum
Input Stability and Repeatability
±0.03% of range (after 30 minute warm-up)
Input Inaccuracy
0.1% of range maximum
Linearity Error (end to end)
12 bit = ±2 counts max. (±0.06% of range)
14 bit = ±10 counts max. (±0.06% of range)
16 bit = ±40 counts max. (±0.06% of range)
Monotonic with no missing codes
Full Scale Calibration Error
(not including offset error)
±0.07% of range maximum
Offset Calibration Error
±0.025% of range maximum
Common Mode Rejection
-90 dB min. @ DC; -150 dB min. @ 50/60Hz
Crosstalk
±0.025% of range max. @ DC, 50/60Hz
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