Danfoss VLT AQUA Operating Instructions Manual

Also see for vlt aqua: Instructions Design guide Instruction manual Operating instructions Design guide

Contents

4.6.5 TorqueWhen tightening all electrical connections it is very important to tightenwith the correct torque. Too low or too high torque results in a bad elec-trical connection. Use a torque wrench to ensure correct torqueIllustration 4.33: Always use a torque wrench to tighten thebolts.Frame size Terminal Torque Bolt sizeD MainsMotor 19-40 Nm (168-354 in-lbs) M10Load sharingBrake 8.5-20.5 Nm (75-181 in-lbs) M8E MainsMotorLoad sharing19-40 Nm (168-354 in-lbs) M10Brake 8.5-20.5 Nm (75-181 in-lbs) M8F MainsMotor 19-40 Nm (168-354 in-lbs) M10Load sharingBrakeRegen19-40 Nm (168-354 in-lbs)8.5-20.5 Nm (75-181 in-lbs)8.5-20.5 Nm (75-181 in-lbs)M10M8M8Table 4.2: Torque for terminals4.6.6 Shielded CablesIt is important that shielded and armoured cables are connected in a proper way to ensure high EMC immunity and low emissions.Connection can be made using either cable glands or clamps:• EMC cable glands: Generally available cable glands can be used to ensure an optimum EMC connection.• EMC cable clamp: Clamps allowing easy connection are supplied with the frequency converter.4.6.7 Motor CableThe motor must be connected to terminals U/T1/96, V/T2/97, W/T3/98 located on the far right of the unit. Earth to terminal 99. All types of three-phaseasynchronous standard motors can be used with a frequency converter unit. The factory setting is for clockwise rotation with the frequency converteroutput connected as follows:Terminal No. Function96, 97, 98, 99 Mains U/T1, V/T2, W/T3EarthVLT AQUA Low Harmonic Drive Operating In-structions 4 How to InstallMG.20.T1.02 - VLT® is a registered Danfoss trademark 514