Bitronics M651, User Manual

Page: 65 / 80

65
ML0039 November 14, 2013 Copyright 2013 Bitronics, LLC
7.0 ANALOG TRANSDUCER OUTPUT OPTION
7.1 Introduction
The Transducer Output options (0 -1 mA or 4-20 mA) feature 3 separate outputs each
with two terminals, one of which is common to all three outputs and one which
provides a unique return path for each output.
7.2 Specifications
Outputs:
3 bi-directional, 0-1mA (active) or 4-20mA (loop powered, passive)
0 – 1mA Current Range
Output Range: 0 to +/-1mA into 10K ohms or less; Overload to
+/-2.1mA into 5K ohms or less.
Resolution: 0.22uA
Output Resistance: 500 ohm
4 – 20mA Current Range
Output Range: 4 to 20mA
Resolution: 1.1uA
Max Loop Voltage: 40Vdc
Max Voltage Drop: 2.3V @ 20mA
4 – 20mA Internal Loop Supply
Max Output Voltage: 6V @ 60mA,
Accuracy:
0.25% of Full Scale Input
Data Update Rate (poll rate):
100ms minimum
Input Capacitance, any Terminal to Case:
470pF
7.3 Connections
The connections for the 0-1 mA output option are shown in figure 8 while the
connections for the 4-20 mA with external and internal loop are shown in figure 9.