Flomec QSI Series, Installation Instructions Manual

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14
QSI VERSION 3 PC BOARD
WIRING DIAGRAM
QSI Version 3
WIRING DIAGRAM
QSI Version 3
4-20mA
Pulse Out
4-20mA
Power In
Inputs: Standard Remote Sensor (Variable Reluctance Pickup Coil)
Outputs: Customer Equipment, 4-20mA Sensing, Built-in Loop Power Supply
(+) (-)
Power (-)
Power (+)
ISOLATED
POWER SUPPLY
12-30 V (ac) or
12-36 V (dc)
Pulse Out (+)
Isolated Outputs
Customer Equipment with Built-in Power Supply
Inputs
Pulse Out (-)
Customer
Equipment
Open
Collector
4-20mA (+)
Min. V = 8.5
Max. V = 36
4-20mA (-)
Customer
Equipment
Customer Equipment without Built-in Power Supply
- 4-20mA Output with Separate Power Supply
(+) (-)
Power (-)
Power (+)
ISOLATED
POWER SUPPLY
12-30 V (ac) or
12-36 V (dc)
4-20mA (+)
4-20mA (-) (Current)
(Current)
(Current)
Loop (+)
Loop (-)
Customer
Equipment
- 4-20mA and Pulse Outputs
Minimum signal amplitutde required for normal operation approx. 15mV P-P
Recommended cable type - twisted pair with shield
Recommended maximum cable length - 20ft.
Caution: When reassembling the
cover plate, make sure the
enclosure seal is not crimped or
twisted. Do not over-tighten
screws (hand-tighten only).
(+) (-)
Min. V = 8.5
Max. V = 36
Isolated
Power Supply
Coil A & B
(Non-polarized
wires)
Coil B
Coil A
Unpowered
Pickup Coil
Figure 14
WIRING DIAGRAMS