Spotlight: Variable frequency drives

July 1, 2006
Intelligent drives Telemecanique Altivar variable speed ac drives feature dual microprocessors and motor control algorithms for high torque and speed

Intelligent drives

Telemecanique Altivar variable speed ac drives feature dual microprocessors and motor control algorithms for high torque and speed regulation.

Features & benefits

  • Control motors from 0.5 to 700 hp

  • Common user interfaces, I/O options, and flexible communication options

  • Modbus and CanOpen protocols integrate into any network

  • Easy-to-read LCD uses plain text and navigation wheel for easy scrolling

  • PowerSuite software configures, monitors, and diagnoses through Ethernet or Bluetooth wireless connection

Schneider Electric
Palatine, Ill.
(847) 397-2600
www.us.schneider-electric.com
Circle 194

Dual chassis drives

Dual SCR chassis drives deliver up to 11.5 and 1 hp combined between the two motors offer two operating modes.

Features & benefits

  • Maximum 5/8 hp

  • Single-phase input of 115 Vac

  • Independent mode lets users vary control of each drive side by changing trimmer pot and speed settings

  • Speed ratio mode sets main speed with one potentiometer and determines ratio of speed between motors with other

Bison Gear & Engineering Corp.
St. Charles, Ill.
(630) 377-4327
www.bisongear.com
Circle 195

Drive analysis software

Analyzer software is offered as a free download and estimates harmonics, current, and voltage harmonic distortion under many supply and filtering conditions.

Features & benefits

  • Indicators show IEEE 519-1992 standard compliance

  • Table 10.3 of IEEE 519-1992 displayed from menu and button bar

  • Compares results from HG7 HarmonicGuard series drive-applied filter, HarmonicGuard filter, and KDR optimized drive reactor

  • Offers six standard 6-pulse drives, drives with reactors, and filters for ac drives

TCI
Milwaukee, Wis.
(800) 824-8282
www.transcoil.com
Circle 197

Vector drives

SM vector drives feature high starting torque, autotuning, advanced low-speed control, and dynamic speed regulation.

Features & benefits

  • Power range up to 20 hp

  • Four operation modes — V/Hz, enhanced V/Hz, vector speed, and torque

  • Input from 120 Vac 1-phase to 600 Vac 3-phase

  • Removable chip programs multiple drives in seconds

AC Technology, a member of the Lenze Group
Uxbridge, Mass.
(508) 278-9100
www.actech.com
Circle 196

Ac drives

Accel 500 family of ac drives is available in V/Hz, sensorless vector, and closed-loop vector designs from to 2,300 hp.

Features & benefits

  • Support 208 to 690 V and are UL, C-UL, and CE listed

  • Configured for common bus applications with both non-regenerative and active front-ends

  • Support DeviceNet, ProfibusDP, CANbus, and Modbus TCP Ethernet

  • Available with additional I/O cards and configurable system-level software

Avtron Mfg. Inc.
Independence, Ohio
(216) 642-1230
www.avtron.com
Circle 198

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