User guide

Overview of the Analog Input Module
Chapter 2
26
Inputs Per Module
8 singleended
Humidity Rating
5 to 95% (noncondensing)
Input Voltage Ranges (nominal)
1 to 5 V
0 to 5 V
0 to 10 V
10 to 10 V
Keying (between)
4 and 6
26 and 28
A/D Converter T ype
successive approximation, monotonic
Input Current Ranges (nominal)
0 to 20 mA
4 to 20 mA
20 to 20 mA
Input Overvoltage Protection
+ 35 VDC
25 VRMS (sinusoidal)
Input Overcurrent Protection
+ 30 mA
Input Impedance
10
10
Ohms for voltage ranges
250 Ohms (+ 0.1%) for current ranges
ElectricalOptical Isolation
between input circuit and control
logic: 1500 V
Backplane Current Requirement
400 mA at 5 VDC
Ambient T emperature Rating
operating: 0 to 60
o
C
(32 to 140
o
F)
storage 40 to 85
o
C
(40 to 185
o
F)
Resolution
1 part in 256 (2
8
)
Linearity
+
0.1% of full scale at 25
o
C
Offset
+
0.15% of full scale at 25
o
C
Gain
+
0.15% of full scale at 25
o
C
Quantizing Error
+ 1/2 LSB (0.19% of full scale)
Absolute Accuracy (including linearity , offset,
and gain at 25
o
C)
0.3%
of full scale + 1/2 LSB
Stability (drift over the full temperature
range)
temperature coef ficient = + 85 ppm/
o
C
of full scale
Inaccuracy (due to internal electrical noise)
3 sigma noise 0.2% RMS of full scale
Specifications