AEROTECH Ndrive HPe 10/20/30

Ndrive HPe 10/20/30

Introduction

Aerotech’s Ndrive HPe10/20/30 (HighPowerPWM)network digital driveis ahighperformanceamplifier.

Thedriveprovides deterministic behavior, auto-identification, and easy software setup.    The Ndrive HPe

10/20/30’s high performance doubleprecision floating point DSP controls thedigital PID andcurrent loops.

All system configuration is doneusingsoftware-settable parameters, including control loop gains and

system safety functions.

TheNdriveHPe10/20/30is offeredwithanoptional encoderinterpolationfeature(-MXH), anauxiliary

squarewaveencoderinput fordual loopcontrol, dedicatedanaloganddigital I/O (expandablewiththe-IO

option), a resolver input, and separate powerconnections formotorandcontrol supply voltages

.   Drive and Software Compatibility

Thefollowing table lists the available drives and which version of the software first supported the drive.

Drives that list a specific version numberin theLast Software Version columnwill not besupportedafter

the listed version.

System Power Requirements

Thefollowing equations canbeusedtodeterminetotal system powerrequirements.  Theactual power

required from the mains supply will bethecombinationof actual motorpower(work), motorresistance

losses, andefficiency losses in the powerelectronics orpowertransformer.  AnEfficiencyFactorof

approximately 90% shouldbeusedinthefollowingequations

.  Power Dissipation

Theamplifier powerdissipation undercontinuous powersupply andoutput current conditions is shownin

Figure 1-3.  Thevalues onthegraphrepresent thepeak current that theamplifierwouldprovideduring

operation.  Whenthebus voltageandoutput current areknown, theamplifierpowerdissipationis foundusing

this graph.  Figure 1-4 shows themaximum recommendedambient temperatureas afunctionof amplifier

powerdissipation.  Usethis graphalongwiththepowerdissipationobtainedfrom thefirst graphtodetermine

the maximumambient temperature.  If theresult is lowerthantheknownoperatingambient temperature,

additional measures arerequired to cool theNdriveHPe10/20/30.  Mountingit toalargemetal plateforextra

heat-sinking and providing additional fan flow are suggested.