ONICON F-3200 Series - Manual (Page 26)

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F-3200 Flow Meter Manual 05/14 - 0671-12 / 18325
Page 26
3.3 ELECTRICAL INSTALLATION
3.3.1 Input Power Requirements
F-3000 Electromagnetic Flow Meters equipped with advanced transmitters are available with two
different options for input power. This is not a user selectable function and must be configured at
the factory.
Special care is required to ensure that the F-3200 is properly connected to earth through an
earth wire. This connection is required to prevent random electrical noise from interfering with
the operation of the meter. (See section 3.3.3 for details.)
* Low Voltage: 18 – 45 VDC, 18 – 45 VAC 45/66 Hz, 300 mA maximum
* High Voltage (Mains): 100 – 240 VAC 45/66 Hz, 35 mA maximum
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IMPORTANT NOTE
This option is not field selectable. Contact the factory if you need to change the input voltage rating.
CAUTION/WARNING
This product must be connected to earth ground for proper operation. Failure to do so will result in
erratic operation and an increased risk of injury.
WARNING
All mains voltage connections must be made through pre-drilled conduit/strain relief opening
located at the bottom of the enclosure. Failure to do so will result in an increased risk of injury.
3.3.2 Analog and Pulse Output Signals
The primary output signals from ONICON F-3200 series electromagnetic flow meters include
a single analog output for flow rate and two programmable pulse outputs for use as frequency,
scaled pulse, alarm and flow direction signals. The three outputs have 500 VDC of electrical
isolation between the flow sensing circuitry, the microprocessor circuitry, and the pulse and
analog output circuitry. In addition, the output circuits operate from dedicated power supply
circuitry that is isolated from all other internal power sources and from earth.
Redundant Output Option
The redundant output option for the F-3200 series electromagnetic flow meter provides complete
signal redundancy for the three primary output signals from the meter. It provides an additional
4-20mA output and two additional programmable pulse outputs and is designed with the
same 500 VDC electrical isolation as the primary outputs. The redundant output transmitter is
controlled directly from the microprocessor and is completely independent of the primary output
circuitry.