Rockwell Automation 1770-HT8 SMART TRANSMITTER - Manual (Page 114)

Product Specifications
Appendix A
A-6
Figure A.1
Loop Power Selection
0.1 A
90024
2
2 Wire HART
Field Device
- + + -
1 2 1
JP2
E D
Analog I/O
Module
1 2
RTN
SH
SH + -
Earth
Ground
Coupling
Capacitors
Interface to
Transceiver
Circuitry of
1770-HT1
Indicates
Direction
of Current
24 Ć 32 VDC
Power
Supply
+ -
Though not indicated, all
shield connections are
connected to each other.
4 Wire HART
Field Device
+ -
+ -
Power
Supply
0.1 A
1770-HT8
0.25A
1770-HT16
0.50A
Low Pass Filter
RC Constant of 55 ms
Low Pass Filter
JP1
E D
CH1 CH2 COM