Eaton HFX Series Installation And Operation Manual

EATON HFX Product Family Installation and Operation Manual E-ELCL-II002-E2 July 201920HFX Product FamilyHFX12m & HF20m Dimensional Data4X .2566.504.654118.225.144130.675.756146.215.282134.174X .3799.612X 2.30558.554X .3799.612.30558.5513.2 Mounting ConsiderationsThe following procedure is recommended whenmounting the HFX series controllers.• Ideally the controller should be mounted on avertical flat surface with the open end of theconnector facing down.• Use four standard threaded fasteners to securelymount the controller to the surface (either 6mm or¼” diameter are acceptable).• Note that the HFX series is designed for ambientoperating temperatures up to 105°C maximum.The housing is constructed of cast aluminumand it allows for effective heat dissipation whenmounted to metal surfaces and/or when adequateventilation is available.• When mounting multiple controllers inside avented enclosure please allow for a minimum of2” between adjacent controller surfaces so thatadequate air flow is present to aid in cooling.• When mounting a controller(s) inside a sealedunvented enclosure, it is important to note thatthe temperature rise above ambient is determinedby the size of the enclosure (surface area) and theexpected power dissipation of the controller(s).A conservative guideline to use for the maximumpower dissipation expected from one HFXcontroller is 50 watts.• Please check with your enclosure manufacturerfor appropriate guidelines concerning thenecessary enclosure volume to adequately limitthermal rise below the maximum operatingtemperature of 105°C13.3 Recommended Wiring PracticesThis section contains information about the controllerconnectors and pin outs. Please use the followingrecommended wiring practices when installing andusing the controller:• Ensure correct and adequate single point ground toprevent ground loops.• Use twisted or twisted shielded pair cable for CANper the applicable standard.• Confirm that the CAN network is properlyterminated using 120Ω resistors.• Ensure the appropriate sized conductor crosssection is specified for the intended load current inthe harness design.Note: Please review individual overcurrent shutdown values inthe configuration and use the correct wire gauge conductor toaccommodate maximum load current configured• Make sure that voltage drops are kept withinreasonable levels under maximum continuous loadconditions e.g. 1 volt on 12-volt systems and 2volts on 24-volt systems.• Verify that the harness is constructed to meet theneeds of the application environment (e.g. shock,vibration, moisture, temperature, chemicals, andimpact).• Make certain that the harness is designed andconstructed to minimize induced interferenceresulting from EMI coupling between signal wires.• Separate power circuits from low-level signals.• All splices (soldered or crimped) should useadhesive lined heat shrink tubing.• Make provisions for drip loops to attach devices inexposed locations and prevent moisture entry andformation.• Provide sufficient clearance from moving parts.