Bausch Datacom DinBox RTU M4 Reference Manual page 13

3.5.4 Analog input connection
The DinBox RTU M4
•
12 bit single ended ADC's (STM32)
• input impedance > 100 Kohm
•
measurement precision > 1 %
•
input voltage : 0 ~ 5 Vdc
Varistor
Conductor cross section : rigid min.
3.5.5 Digital input connection
The DinBox RTU M4
an internal 24Vdc dc/dc convertor. To minimize contacts, one common contact is used.
•
opto coupler SFH6156-1
• active voltage : 24 Vdc
Conductor cross section : rigid min.
–
Active
Input
+
can monitor up to 2 non-isolated analog signals.
300K 0.1%
300K 0.1%
rigid max.
can monitor up to 8 digital inputs. The inputs are active thanks to
rigid max.
Varistor
BAS16
0.08 mm 2 flexible min. 0.08 mm
1.5 mm 2 flexible max. 1.5 mm
2
0.08 mm flexible min. 0.08 mm
1.5 mm 2 flexible max. 1.5 mm
10K
U
24Vdc
ATXMEGA256
12 bit ADC
2.54 V ref.
2
2
2
2