User manual

Analog I/O expansion module Berghof Automationstechnik
20 2D0172002ZD00.DOC 2VF100051FE01.doc
2.8. Analog I/O channels
2.8.1. Analog input channels
The analog expansion module has 16 analog, multiplexed voltage inputs. These in-
puts are protected by protective diodes. The input current may not, even in the case
of error, exceed the value of 10 mA per channel.
Input channel data
Input voltage/current, rated value
+/- 10 V, differential
+/- 20 mA
Input voltage, maximum rating +/- 12 V,
Input current, maximum rating 10 mA je Kanal
Common mode rejection > 70 dB / DC
Diff. input resistance 20 MOhm
Common mode input resistance 10 MOhm, typ.
Input filter, 1
st
degree
t = 70 µs
Conversion method
successive approximation,
no error codes
Resolution voltage
current
11 bit + sign; 1 LSB = 4,883 mV
11 bit + sign; 1 LSB = 9,766 µA
Precision in temp. range 0-50°C
voltage
current
+/- 1 LSB; +/- 0,2 %
+/- 1 LSB; +/- 0,3 %
Voltage input (basic circuit diagram)
2VF100064DG00.cdr