Danfoss VLT ISD 410 Operating Instructions Manual

Contents

Danfoss VLT ISD 410 Operating Instructions Manual Manual pdf 15 page image

4.2 Motor Components4.2.1 ShaftThe shaft transfers the motor force (torque) to the machinecoupled to the shaft.The torque is transferred by a clamping set.All servomotor types have a standardised shaft.Shaft material: St60ISD servomotors are sealed externally by a shaft seal. Theshaft seal is a consumable part (see 10.1 Maintenancetasks).CAUTIONISD 410 servomotors are not suitable for installation facingupward with water "standing" on the shaft seal. ConsultDanfoss for specific applications.130BC457.10Illustration 4.6 Shaft4.2.2 Brake (Optional)The optional mechanical power-off brake is designed as asingle-disc brake with emergency stop function. Theemergency stop function can be initiated at most 20 timesper hour and 500 times in total.The effective holding torque is 9 Nm.The brake operates according to the fail-safe principle"closed when no current". It is powered from the 300 VDC link.This enables zero-play load holding when no current ispresent.Electrical data: Current consumption 0.056 A at 205 V DC.NOTEThe brake should not be misused as a working brake, asthis would cause increased wear, resulting in prematurefailure.4.2.3 CoolingISD servomotors are self-cooling.Cooling (heat dispersal) is primarily via the flange, with asmall amount dispersed by the housing.4.2.4 Winding/MotorThe winding causes the motor rotor to turn.There is a choice of two winding and magnet packages.They differ in speed and torque characteristics.Winding protection: A thermal model is used to monitorthe maximum allowable power and switch off the motor ifit is exceeded. An error message is also sent over the CANbus to the higher-level master system.4.2.5 Internal ComponentsPower/CAN bus loop input connectorDC link voltage (supply voltage) and CAN bus.Power/CAN bus loop output connectorDC link voltage (supply voltage) and CAN bus for the nextservomotor.Sensor I/O (port)The sensor port includes digital input and output, ananalog input and the 24 V DC control voltage andconforms to the PELV specification.Output stage (IGBT)The output stage converts the intermediate circuit voltageto 3-phase AC voltage that drives the PM motor.Controller (DSP)Contains the processor that provides all control functionsfor the ISD servomotor.ResolverThe position controller of the ISD servomotor obtains itsdata from a resolver. The analog signals from the resolverare processed in the DSP and provided to the controllerwith a 13 bit resolution.The positioning accuracy of the servomotor is 0.25° inrelation to the motor shaft.Other encoder systems are optionally available.Description VLT® ISD 410 Servomotor Operating Instructions14 MG75D102 - VLT® is a registered Danfoss trademark44