turck BL20 Series - 8.7.1 Technical data

143
2020/09
8.7.1 Technical data
Technical data
Designation BL20-4AI-U/I
Number of channels 4
Nominal voltage from supply terminal U
L
24 VDC
Nominal current from supply terminal I
L
0 mA
Nominal current from module bus I
MB
50 mA
Power loss of the module, typical < 1 W
Input signal (current mode)
Input resistance (burden) < 62 
Input current (range which can be evaluated by the
A/D converter)
0…20 mA
4…20 mA
Input current (maximum - from
20.2 mA an Measured value out of range” message is
generated).
50 mA
Cutoff frequency (-3 dB) 20 Hz
Input signal (voltage mode)
Input resistance (burden) > 98.5 k
Input viltage (range which can be evaluated by the
A/D converter)
-10…10 VDC
0…10 VDC
Input voltage (maximum - a deviation of 1% already
generates a ”Measured value out of range” message)
35 VDC
Cutoff frequency (-3 dB) 20 Hz
accuracy fo the input signal
Basic error at 23 °C / 73.4 °F < 0,3 %
Temperature coefficient 300 ppm/°C from end value
Measurement value representation
Resolution of the A/D converter 16 bit
Measuring principle Delta Sigm, NE43, Extended range
Measured value
representation
16 bit: two's complement coded
or
12 bit left-justified
– two's complement coded (even negative values
possible)
– binary number without coding (only positive values
possible)