Signet 8550-3 User Manual page 3

3.1 System Power/Loop Connections
Stand-alone application, no current loop used
Connection to a PLC/Recorder, separate supply
Transmitter
Loop 2 –
Loop 2 +
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
Example: Two transmitters connected to PLC/Recorder with separate power supply
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
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
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.
Terminals
No Aux Power
Snsr 2 Gnd
16
(SHIELD)
515/3-8510-XX
Snsr 2 IN
15
525
(RED)
Snsr 2 V+
2100
14
(BLACK)
2517
Snsr 1 Gnd
13
(SHIELD)
2536/3-8512-XX
Snsr 1 IN
12
(RED)
2540/2541
Snsr 1 V+ 11
7000 Vortex
(BLACK)
8550-3 Flow Transmitter Instructions
Transmitter
Terminals
Loop 2 –
Loop 2 +
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
PLC or Recorder
+
Channel 2
Terminals
–
4-20 mA
6
5
–
Channel 1
4-20 mA
4 +
3
Power
–
2
Supply
+
1
12–24 VDC
Transmitter 1
Terminals
6
Loop 2 –
Loop 2 + 5
4
3
2
1
Aux Power Required
2000
2507
2530
2535
2540 (mfg prior to Jan 1999)
7002 Vortex
dual open-collector sensor
systems
6 NC
5 NC
Power
–
4
Supply
3 +
12–24 VDC
2
1
Connection to a PLC with built-in power supply
Transmitter
Terminals
Loop 2 –
Loop 2 +
System Power Loop 1 –
System Power Loop 1 +
AUX Power –
AUX Power +
PLC or Recorder
+
Channel 1
–
4-20 mA in
+
Channel 2
– 4-20 mA in
–
Channel 3
+
4-20 mA in
–
Channel 4
Transmitter 2
+ 4-20 mA in
Power
–
Supply
+
12–24 VDC
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.
‡ SIGNET
PLC Terminals
+
6 Channel 2
– 4-20 mA
5
4 +
Channel 1
– 4-20 mA
3
–
2 Power
Supply
+
1
12–24 VDC
Internal
PLC Connection
Terminals
6 Loop 2 –
5 Loop 2 +
System Power Loop 1 –
4
System Power Loop 1 +
3
AUX Power –
2
AUX Power +
1
8550-3
Flow
Flow1: 6.25 GPM
B
Flow2: 9.75 GPM
ENTER
A 200 ft. (61 m)
≤
B 200 ft. (61 m)
≤
8550-3
Flow
Flow1: 6.25 GPM
B
Flow2: 9.75 GPM
ENTER
A 1000 ft. (305 m)
≤
B 1000 ft. (305 m)
≤
A
A
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