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+GF+ SIGNET 8550-1 Flow Transmitter Instructions
3. Electrical Connections
Caution: Failure to fully open terminal jaws before removing wire may
permanently damage instrument.
Wiring Procedure
1. Remove 0.5 - 0.625 in. (13-16 mm) of insulation from wire end.
2. Press the orange terminal lever downward with a small screwdriver to open terminal
jaws.
3. Insert exposed (non-insulated) wire end in terminal hole until it bottoms out.
4. Release orange terminal lever to secure wire in place. Gently pull on each wire to
ensure a good connection.
Wiring Removal Procedure
1. Press the orange terminal lever downward with a small screwdriver to open terminal
jaws.
2. When fully open, remove wire from terminal.
Terminals
1. AUX Power +
12-24 VDC
2. AUX Power -
Note: AUX Power connections not required for +GF+ SIGNET
flow sensors: 515, 525, 2536, 2517, 2540 (since Jan. 99),
8510-XX, 8512-XX, all Vortex frequency output sensors.
System Power/Loop
3 (+)
12-24 VDC system power and current loop connections.
4 (-)
Max. loop impedence: 50
Ω
max @12 V, 325
Ω
max @ 18V,
600
Ω
max @24 V.
Open-Collector Output
5 (+)
Transistor programmable as:
6 (-)
• High/Low alarm with adjustable hysteresis
• Disable (Off) selection
• Volumetric pulse
• Frequency (divide from 1 to 255)
Sensor Input
7. (Sensor V+) Blk
8. (Sensor IN ) Red
9. (Sensor Gnd) Shld
Wiring Tips
:
•
Do not route sensor cable in conduit containing AC power wiring - electrical noise
may interfere with sensor signal.
•
Routing sensor cabling in grounded metal conduit may prevent moisture damage,
electrical noise, and mechanical damage.
•
Seal cable entry points to prevent moisture damage.
•
When placing two wire ends into a single terminal, solder or crimp ends together.
2
1
102 mm
(4.0 in.)
96 mm (3.8 in.)
96mm (3.8 in.)
96 mm
(3.8 in.)
97 mm
(3.8 in.)
56 mm
(2.2 in.)
41 mm
(1.6 in.)
96 mm
(3.8 in.)
Optional
Rear Cover
Dimensions
Panel Mount
Field Mount
Panel Cutout
92 x 92 mm
(+ 0.8, - 0 mm)
3.6 x 3.6 in.
(+0.031, -0 in.)
82 mm
(3.23 in.)
Output -
System Pwr
Loop -
System Pwr
Loop +
AUX
Power -
AUX
Power +
4
3
2
1
6
5
Sensr Gnd
(SHIELD)
Sensr IN
(RED)
Sensr V+
(BLACK)
9
8
7
