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95-8714
6.3
24 VDC
+
–
B2653
250 TO 500
OHMS
+mA
INTR GND
RS-485 A
INTR A
SHIELD
SHIELD
+24 VDC
SPARE
+24 VDC
11
12
13
14
15
16
17
18
19
–mA
CAL
RS-485 B
INTR B
SHIELD
SHIELD
0V COM
0V COM
0V COM
1
2
3
4
5
6
7
8
9
HART
NOTE: THE HART HANDHELD DEVICE CAN BE CONNECTED EITHER TO THE
HART TERMINALS OR ACROSS THE LOAD RESISTOR.
Figure 20—Wiring the LS2000 Receiver for Benchtop
Testing/Programming Using HART Protocol
C2667
+mA
INTR GND
RS-485 A
INTR A
SHIELD
SHIELD
+24 VDC
SPARE
+24 VDC
11
12
13
14
15
16
17
18
19
–mA
CAL
RS-485 B
INTR B
SHIELD
SHIELD
0V COM
0V COM
0V COM
1
2
3
4
5
6
7
8
9
HART
NOTE 1:
TOTAL LOOP RESISTANCE OF 4-20 MA CIRCUIT =
250 OHMS MINIMUM, 600 OHMS MAXIMUM.
NOTE 2: NOTE: SHIELDED CABLE RECOMMENDED (REQUIRED FOR ATEX).
CAUTION: DO NOT CONNECT THE COMMUNICATION LINK “INTR GND”
TERMINAL TO POWER SUPPLY COMMON OR ANY OTHER
GROUND CONNECTION.
INTR GND
RS-485 A
INTR A
SHIELD
SHIELD
+24 VDC
+24 VDC
17
16
15
14
13
12
18
SPARE
RS-485 B
INTR B
SHIELD
SHIELD
0V COM
0V COM
8
7
6
5
4
3
2
HART
TRANSMITTER
RECEIVER
24 VDC
+
–
+
–
4 to 20 MA
Figure 21— Typical System Wiring
Including Optional Communication Link — Receiver Wired for
Non-Isolated 4-20 mA Current Output (Sinking)
24 VDC
+
–
A2654
SHIELD
INTR GND
COM2A
INTR A
COM2B
SHIELD
+24 VDC
+24 VDC
12
13
14
15
16
17
18
19
MODBUS
HART
SHIELD
CAL
COM1A
COM1B
INTR B
0V COM
SHIELD
0V COM
2
3
4
5
6
7
8
9
Figure 23—LS2000 LON Power and HART
A2655
SHIELD
INTR GND
COM2A
INTR A
COM2B
SHIELD
+24 VDC
+24 VDC
12
13
14
15
16
17
18
19
MODBUS
HART
LON 1
LON 2
SHIELD
CAL
COM1A
COM1B
INTR B
0V COM
SHIELD
0V COM
2
3
4
5
6
7
8
9
Figure 22—LS2000 LON Wires