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8550-3 Flow Transmitter Instructions
‡ SIGNET
3.1 System Power/Loop Connections
Auxiliary Power Note:
Auxiliary power is used ONLY if the flow sensors require more than 1.5 mA of current. This is limited to the following Signet flow sensors:
• 2000, 2507, 2530, 2535, 2540 only if manufactured prior to Jan 1999, 7002 Vortex
• All dual open-collector sensor systems
Stand-alone application, no current loop used
Transmitter
Terminals
Power
Supply
12–24 VDC
Connection to a PLC with built-in power supply
Internal
PLC Connection
Connection to a PLC/Recorder, separate supply
Example: Two transmitters connected to PLC/Recorder with separate power supply
–
+
PLC or Recorder
Loop 2 –
Loop 2 +
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
6
5
4
3
2
1
Transmitter
Terminals
Loop 2 –
Loop 2 +
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
6
5
4
3
2
1
6
5
4
3
2
1
Transmitter
Terminals
Loop 2 –
Loop 2 +
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
Loop 2 –
Loop 2 +
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
6
5
4
3
2
1
6
5
4
3
2
1
Loop 2 –
Loop 2 +
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
Power
Supply
12–24 VDC
–
+
PLC or Recorder
Channel 3
4-20 mA in
Channel 4
4-20 mA in
–
+
–
+
Transmitter 1
Terminals
Transmitter 2
Terminals
PLC Terminals
Channel 1
4-20 mA
+
–
Power
Supply
12–24 VDC
Channel 2
4-20 mA
+
–
–
+
Channel 2
4-20 mA
+
–
Channel 1
4-20 mA
–
+
Channel 1
4-20 mA in
Channel 2
4-20 mA in
+
–
+
–
Power
Supply
12–24 VDC
–
+
NC
NC
Terminals
Snsr 2 Gnd
(SHIELD)
Snsr 2 IN
(RED)
Snsr 2 V+
(BLACK)
Snsr 1 Gnd
(SHIELD)
Snsr 1 IN
(RED)
Snsr 1 V+
(BLACK)
16
15
14
13
12
11
No Aux Power
515/3-8510-XX
525
2100
2517
2536/3-8512-XX
2540/2541
7000 Vortex
Aux Power Required
2000
2507
2530
2535
2540 (mfg prior to Jan 1999)
7002 Vortex
dual open-collector sensor
systems
Maximum cable length is 200 ft. for 515/8510-XX,
525, 2517 and any sinusoidal flow signal.
Maximum cable length is 1000 ft. for 2536/
8512-XX, 2540/2541, vortex, and any open-
collector flow signal.
A
≤
200 ft. (61 m)
B
≤
200 ft. (61 m)
A
B
8550-3
Flow
Flow1: 6.25 GPM
Flow2: 9.75 GPM
ENTER
3.2 Sensor Input Connections
Wiring Tips:
•
Do not route sensor cable in conduit containing AC power wiring.
Electrical noise may interfere with sensor signal.
•
Routing sensor cable in grounded metal conduit will help prevent
electrical noise and mechanical damage.
•
Seal cable entry points to prevent moisture damage.
•
Only one wire should be inserted into a terminal. Splice double
wires outside the terminal.
A
B
A
≤
1000 ft. (305 m)
B
≤
1000 ft. (305 m)
8550-3
Flow
Flow1: 6.25 GPM
Flow2: 9.75 GPM
ENTER
