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Advanced Motion Controls Amplifiers

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1.	Engineering Notes	Downloads 43
2.	Power Supply Selection for Advanced Motion Controls Servo Amplifiers and Drives	Downloads 13
3.	Installation Notes	Downloads 6

Sinusoidal Brushless Servo Amplifiers (6/0)

This section features servo amplifiers that drive the motor with sinusoidal currents. The S series PWM servo amplifiers are designed to drive AC brushless motors and linear AC motors with sine wave currents at a high switching frequency. These models require two sinusoidal command signals with a 120° phase shift - the amplifier generates the third phase internally. The phase angle must correspond to the position of the motor rotor, and the signal amplitude controls the motor torque. In this case, an external controller performs the sinusoidal commutation and these servo amplifiers operate only in current mode. Dip switches are available to change the amplifier current limit and gain settings, while other options are available for additional current loop tuning. All other adjustments are made within the controller's software.

Analog Input DC Brushless Servo Amplifiers (11/0)

These servo amplifiers drive DC brushless motors at a high switching frequency and can also be used to drive brush-type and linear motors. Every amplifier in this section can operate in current, tachometer, or open loop mode. Certain series in this section also operate in Hall or encoder velocity mode and some series feature all five modes of operation. The amplifiers in this section have potentiometers to adjust loop gain, current limit, reference gain and offset within the amplifier. The offset adjusting potentiometer can also be used as an on board input signal for testing purposes. The entire selection of servo drives found in this section are trapezoidally commutated. Brushless servo motors have electronic commutators that are isolated from high bus voltages; as a result, higher speeds can be achieved with brushless motors. In addition, brushless motors have good performance characteristics and a high power density. Also, these motors require less maintenance than brush-type motors and they are more reliable. For most positioning applications, trapezoidal commutation is adequate; however for applications that require high precision velocity control and a perfectly smooth torque curve, sinusoidal commutated servo drives should be used

PWM Input Brush & Brushless Servo Amplifers (8/0)

PWM input servo amplifiers operate as power amplifiers and feature current limit adjustments. PWM input servo amplifiers are designed to work with digital motion controllers that can supply TTL compatible "PWM" and "direction" outputs. These controllers are often based on dedicated motion controller IC's e.g. HCTL 1000(HP) or LM628 (National Semiconductors). Advanced Motion Controls recommends the use of PWM input amplifiers for applications where analog input amplifiers are not suitable, e.g. extremely long signal wires or the lack of a controller with an analog output.

Analog Input DC Brush Type Servo Amplifiers (5/0)

These amplifiers drive brush-type DC motors or inductive loads at a high switching frequency and can be configured in various modes and accept an analog ± 10V command signal. The amplifiers have potentiometers to adjust loop gain, current limit, reference gain and offset within the amplifier. The offset adjusting potentiometer can also be used as an on board input signal for testing purposes. DC motors are easy to set up, and excellent speed control can be obtained with the addition of a velocity feedback device.

Power Supplies, Filter Cards and Shunt Regulators (11/4)

Certain applications require additional components such as filter cards, power supplies and/or shunt regulators.

CANopen Digital Drives (23/4)

CANopen is an open standard protocol, designed for distributed machine control. More information on CANopen can be found at http://www.can-cia.org and our CANopen page. The DigiFlex® CANopen drives support the CANopen Drives and Motion Control Profile (DSP-402) and the CANopen Communication Profile (DS301). These CANOpen digital servo drives provide Dual Encoder Feedback.

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Engineering Notes *
* registered Members only!

General servo motion and servo amplifier engineering reference.

» Author: servohal admin dtd. 04.10.2004
» Size 118.01 kB; Needed time to download 0.31 Sec. with 3 mbit DSL
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