FCI FS10A Installation & Operation Manual
Also see for FS10A: Installation & operation guideInstallation & operation guide
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FS10 Series4 Fluid Components International LLC3 INSTRUMENT WIRINGOnly qualified personnel are to wire or test this instrument. The operator assumes all responsibilities for safe practices while wiring or troubleshoot-ing. One of the following wiring instruction and diagrams illustrate the requirements for power input, alarm and analog outputs and safety instruc-tions for the unit being installed.Caution: The instrument contains electrostatic discharge (ESD) sensitive devices. Use standard ESD precautions when handling theinstrument.Recommended Minimum Wire GaugeThe following wire gauge chart specifies the correct wire for the distance to the power source or loads. Note that the open collector option is limited to50 ft. It is also recommended that the open collector cable is shielded and that it is not run in the same conduit with the power source or the relay load.Table 1 – I/O Wiring Gauge vs. DistanceGroundingThe switch must be properly connected to earth ground for safety and operational reasons.The circuit board is tied to the enclosure case internally and both are tied to the probe assembly. If the installation pipe or vessel is not properlygrounded, connection to earth ground may be connected at the output connector, i.e. M12 or cable pigtail. Use the recommended wire gauge speci-fied for the input power and distance listed in the chart above. Do not connect the earth ground to DC ground (terminals are marked “GND”,"RTN", “COM” or “–”).Input Power, 24 VDCFCI recommends installing an input power disconnect and a fuse near the instrument to interrupt power during installation, maintenance, calibration,alarm selection and troubleshooting procedures. Install conduit according to the local electrical codes or hazardous location requirements.Attach the power leads according to the Input/Output connection schematic on the following page. If the unit has an M12 interface, verify that themating connector pin numbers match the designations of the wiring diagram. If the unit is supplied with a cable pigtail, connect the flying leads viaan approved terminal block or connector in an electrically safe and approved conduit box.Attach the wires to the relay and other functions as needed. The relay contact conditions are shown in the alarm state (de-energized). The relay’s maxi-mum rating is 1 A @ 24 VDC/120 VAC (FM only), 24 VDC (ATEX), resistive loads.Refer to Section 5 for the setpoint and alarm state settings.Connection Maximum Diameter (guage)10’ 50’ 100’ 250’ 500’ 1000’(3 m) (15 m) (30 m) (76 m) (152 m) (305 m)Input Power (24 VDC nominal) 24 24 22 22 20 18Relay Output (1 amp contacts) 18 16 14 12 10 XOpen Collector Output 24 22 X X X X4-20 mA Output 24 24 22 22 20 18 |
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