Moore Industries TDZ, Руководство по установке

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12 The Interface Solution Experts
THZ & TDZ
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
+
+
+
+
–
–
–
–
12-24Vdc
POWER
THZ OR TDZ
(THZ HPP
SHOWN)
THE HART COMMUNICATOR
OR THE PC CAN BE CONNECTED
AT ANY POINT ON THE OUTPUT
SIDE OF THE LOOP. THE TOTAL
LOOP RESISTANCE MUST BE
BETWEEN 250 AND 1100
OHMS FOR GOOD HART
COMMUNICATIONS TO OCCUR
2-WIRE RTD
OR DECADE
RESISTANCE
BOX
CURRENT
METER
THERMOCOUPLE
SIMULATOR
3-WIRE RTD
OR DECADE
RESISTANCE BOX
MILLIVOLT
INPUT
4-WIRE RTD
OR DECADE
RESISTANCE BOX
POTENTIOMETER
INPUT
HART MODEM
CONNECTS TO
SERIAL (COM)
PORT OF PC
OR
NOTE: WHILE THE THZ
DIN & DH UNITS AND TDZ
HOCKEY-PUCK UNITS
WILL VARY IN APPEAR-
ANCE FROM THE UNIT
SHOWN HERE, IDENT-
ICAL LABELS ARE USED.
SIMPLY CONNECT THE
WIRES TO THE TERMI-
NALS THAT HAVE THE
SAME DESIGNATIONS.
–PS +PS
2
3
4
LOAD=250 OHMS
+
–
1
2
3
4
1
Figure 10. Using a HART Communicator or the PC to configure the THZ or TDZ.