Danfoss VLT AQUA Drive FC 202 Operating Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

Contents

5 Electrical Installation5.1 Safety InstructionsSee chapter 2 Safety for general safety instructions.WARNINGINDUCED VOLTAGEInduced voltage from output motor cables from differentdrives that are run together can charge equipmentcapacitors even with the equipment turned off andlocked out. Failure to run output motor cables separatelyor use shielded cables could result in death or seriousinjury.• Run output motor cables separately or useshielded cables.• Simultaneously lock out all the drives.WARNINGSHOCK HAZARDThe drive can cause a DC current in the groundconductor and thus result in death or serious injury.• When a residual current-operated protectivedevice (RCD) is used for protection againstelectrical shock, only an RCD of Type B isallowed on the supply side.Failure to follow the recommendation means that theRCD cannot provide the intended protection.Overcurrent protection• Additional protective equipment such as short-circuit protection or motor thermal protectionbetween drive and motor is required forapplications with multiple motors.• Input fusing is required to provide short circuitand overcurrent protection. If fuses are notfactory-supplied, the installer must provide them.See maximum fuse ratings in chapter 10.7 Fusesand Circuit Breakers.Wire type and ratings• All wiring must comply with local and nationalregulations regarding cross-section and ambienttemperature requirements.• Power connection wire recommendation:Minimum 75 °C (167 °F) rated copper wire.See chapter 10.5 Cable Specifications for recommended wiresizes and types.CAUTIONPROPERTY DAMAGEProtection against motor overload is not included in thedefault setting. To add this function, setparameter 1-90 Motor Thermal Protection to [ETR trip] or[ETR warning]. For the North American market, the ETRfunction provides class 20 motor overload protection inaccordance with NEC. Failure to set parameter 1-90 MotorThermal Protection to [ETR trip] or [ETR warning] meansthat motor overload protection is not provided and, ifthe motor overheats, property damage can occur.5.2 EMC-compliant InstallationTo obtain an EMC-compliant installation, follow theinstructions provided in:• Chapter 5.3 Wiring Schematic.• Chapter 5.4 Connecting to Ground.• Chapter 5.5 Connecting the Motor.• Chapter 5.6 Connecting the AC Mains.NOTICETWISTED SHIELD ENDS (PIGTAILS)Twisted shield ends (pigtails) increase the shieldimpedance at higher frequencies, reducing the shieldeffect and increasing the leakage current. To avoidtwisted shield ends, use integrated shield clamps.• For use with relays, control cables, a signalinterface, fieldbus, or brake, connect the shield tothe enclosure at both ends. If the ground pathhas high impedance, is noisy, or is carryingcurrent, break the shield connection on 1 end toavoid ground current loops.• Convey the currents back to the unit using ametal mounting plate. Ensure good electricalcontact from the mounting plate through themounting screws to the drive chassis.• Use shielded cables for motor output cables. Analternative is unshielded motor cables withinmetal conduit.NOTICESHIELDED CABLESIf shielded cables or metal conduits are not used, theunit and the installation do not meet regulatory limitson radio frequency (RF) emission levels.Electrical Installation Operating GuideMG21A502 Danfoss A/S © 09/2018 All rights reserved. 235 5