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.

10-20-30

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.