Product category:
Stepper and Servo Drives, Motors, Controls
News Release from: Parker Hannifin Electromechanical Automation | Subject: SLVD drives
Edited by the Engineeringtalk Editorial
Team on 18 June 2002
Compact brushless servos deliver up to
1.5kW
Parker Hannifin's Electromechanical Division has launched a series of remarkably small high-performance brushless servo drives.
Parker Hannifin's Electromechanical Division has launched a series of remarkably small high-performance brushless servo drives The new SLVD drives measure just 141 x 86mm, with a depth of 140mm, and the family includes models that can deliver shaft powers of up to 1.5kW
The drives are particularly powerful when teamed with Parker's new MB and SMB series brushless servo motors, enabling exceptionally high torque and acceleration/deceleration figures to be obtained from small frame size units.
Designed for direct-online operation from a standard 230V AC mains supply, SLVD servo drives are available with a choice of three power output stages, offering current ratings of 1.25, 2.5 and 5A continuous (2.5, 5 and 10A peak).
High frequency switching techniques are employed to maximise performance and efficiency, and thereby reduce internal heat dissipation.
The drives can be used with any standard three-phase brushless servomotor that uses sinusoidal commutation and resolver feedback, but are designed for optimum performance with Parker's new MB and SMB series motors.
These latest-generation motors offer a very wide choice of torque-speed characteristics and configuration options, enabling users to easily find an exact match for their particular application.
The two families include 20 models that are ideal for use with SLVD drives, offering eight different frame sizes from 56 to 205mm, continuous torque ratings from 0.2 to 28Nm, and peak torque ratings as high as 144Nm.
Three of these motors are special high torque density models that can generate up to 30% more torque than conventional servomotors of the same size.
SLVD servo drives can be used for position, speed or torque control, and are capable of handling advanced motion control functions such as encoder following, cam profiling and electronic gearbox; a fast servo loop update time of 128us helps ensure accurate current control for applications involving dynamically-changing move data.
The drives are essentially parameter-driven units designed to be controlled directly from a PC, but they also incorporate a novel picoPLC based controller that can store up to 128 program steps, enabling simple motion control sequences to be commanded by external events or signals from a host controller, such as a PLC.
An optional plug-on front panel keypad and display module allows all basic drive parameters, such as motor idle and run speeds, to be set up without the use of a PC.
Comprehensive communications facilities include RS422/RS485 as standard, with CANbus, DeviceNet and Profibus DP interfaces available via an optional fieldbus gateway.
The drive also offers industry-standard step-direction and +/-10V analogue control inputs, for users who wish to migrate existing machines to modern servo technology without changing host controllers.
In addition to resolver and encoder inputs, the drive features two digital and two analogue user-definable inputs, two digital user-definable outputs, and an encoder emulation output.
All digital I/O uses PLC-compatible 24V signal levels for ease of system integration.
Parker's SLVD drives are housed in a robust IP20-rated enclosure, designed for in-cabinet mounting on a standard Omega rail.
The drives incorporate an integral cooling fan and are rated for use in ambient temperatures up to 45C.
An internal 60W dump resistor is provided to dissipate regenerated power during deceleration. Request a free brochure from Parker Hannifin Electromechanical Automation ...
(This was Engineeringtalk's Top Story on 17 June 2002).
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