LM629 PDF

Use a single power supply of 32V, 1A which splits to two set of dxtasheet and ground lines. I agree with Bruce that this is not the best device datasneet use with a Stamp because of the number of pins required. In the position mode of operation, the host processor specifies acceleration, maxi- mum velocity, and final position. Many successful projects have used the L and similar motor control chips. I was thinking that the RST is an asychronous input and so might not need a clock as long as I pause long enough, correct me if I am wrong in this line of thought.

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The HBridge uses current feedback, allowing torque control modes. The 3C20 will drive brush type servo motors up to 50 V and 2A. Logic and 5V encoder power is provided by a local step down regulator from motor power, simpifying 3C20 wiring. The 7I29 connects to the motor controller card with a 50 conductor flat cable and have screw terminals for motor power and motor connections.

Encoder and index input connectors are also made available on the 7I Encoder inputs can be single ended or differential. The 7I29 has overcurrent and overtemperature protection. The 7I29 is rated at Input signals have V RMS isolation from motor power. They use high efficiency synchronous rectifying drivers, eliminating the need for heat sinks. Each channel has a selectable 3A or 1A current limit and can operate in fast decay or slow decay mode. Input RC filters and Schmitt triggers are provided for encoder and index signals.

A 2 channel version 7I is available for use with the 4I The 7I54 has a maximum per axis current rating of 3 Amps and a voltage rating of 40V. Current limits of 1 Amp and 3 Amp are user selectable, as are voltage and current torque modes. All motor power circuitry is galvanically isolated from the controller interface.

PWM rates up to 50 KHz are supported. The 7I54 also conditions and multiplexes the encoder input signals and supports both TTL and differential encoder inputs. The controller connection is a 50 pin header that matches the pinout of the Mesa 50 pin FPGA based motion controllers. The 7I54 uses Phoenix compatible 3. The 8I20 will supply peak currents of 30A.

High side logic and gate power are derived from the low side allowing a wide operational bus voltage range 24 to VDC and host communication when bus voltage is off. High side over current sensing protects the IGBT module from line-line and line-ground faults. A brake output capable of 15A drive is provided. The brake output can be driven at a presettable overvoltage setting.

The 8I20 uses the requested torque and reference angle to control the current loop. For applications that require a smart amplifier, the 8C20 daughter card can be added.

The 7I39 is available in low voltage and high voltage models. Each 3 Phase bridge on the 7I39 has selectable overcurrent limits of. An overvoltage clamp protects the 7I39 from inductive voltage surges, reducing the need for large motor supply capacitors. Gate power is derived from logic side power so that unlike other bridges, the drivers are functional all the way down to 0V motor power supply, allowing safe and easy setup and testing.

Each bridge on the 7I40 has selectable overcurrent limits of. An overvoltage clamp protects the 7I40 from inductive voltage surges, reducing the need for large motor supply capacitors.

The 7I40 also includes encoder input conditioning. Encoder inputs can be either single ended or differential. The SoftDMC system supports up to 8 axis simultaneous motion. SoftDMC supports Brush motors, 2 phase stepper motors in closed loop and open loop modes, and 3 phase AC and DC brushless motors in closed and open loop modes.

They connect to the motor controller card with a 50 conductor flat cable and have screw terminals for motor power and motor connections. Both H-bridges have overcurrent and surge protection. The 7I25 is rated at 3A continuous per channel and 6A peak at 48V maximum input voltage. The 7I27 is rated at 10A continuous and 25A peak at 45V maximum input voltage. The 4I27A is designed for high performance positioning systems using DC servo motors with quadrature shaft encoders.

Quadrature encoder and index inputs use balanced RS levels for noise immunity. The LM can execute a ramp-up, slew, and ramp-down motion sequence without host processor intervention. Host interrupts can be generated at end of motion, position breakpoints, index pulse, or in response to various error conditions.

A digital PID filter is used to set loop feedback parameters for stability and optimum performance. Velocity, target position and filter parameters may be changed during motion. Demonstration software includes examples of 2 axis position mode operation, velocity mode operation, and a simple filter tuning program that allows dynamic filter coefficient modification while providing a graphic display of the servo system step response.

Source code is provided for all demonstration software. The 4I27 is designed for high performance positioning systems using DC servo motors with quadrature shaft encoders.

The per axis output of the 4I27 is an 8 bit sign-magnitude PWM signal that can drive H-bridge type servo amplifiers directly. Quadrature encoder and index inputs are conditioned with RC filters and Schmitt triggers for noise immunity.

RC filter time constants can be changed by replacing a plug-in resistor network. An analog out version of the 4I27 is available as the 4I27A. The 4I28 is designed for high performance positioning systems using DC servo motors with quadrature shaft encoders.

Demonstration software includes examples of 4 axis position mode operation, velocity mode operation, and a simple filter tuning program that allows dynamic filter coefficient modification while providing a graphic display of the servo system step response. The 4I36 is intended for robotic, motor control, measurement, and instrumentation applications. TTL or RS operation is jumper selectable in groups of two channels. The differential RS inputs are suited for longer cable lengths and have optional termination.

Digital filtering is used on encoder inputs to reject input noise. The 4I36 counters may cleared individually, or all counters may be cleared simultaneously. Each counter has a option to be cleared by either the rising or falling edge of the index signal. Maximum count rate of the 4I36 with TTL inputs is 4 million counts per second.

Maximum count rate with RS inputs is 10 million counts per second. Any counter may be configured to provide a timing reference for velocity calculations instead of quadrature input. The FPGA configuration flash memory can be updated from the host, no special cable or adapters are required. The 4I74 is intended for robotic, motor control, measurement, and instrumentation applications.

TTL or RS operation is jumper selectable on a per input basis. The differential RS inputs are suited for longer cable lengths and are terminated. Two ports can be run in RS mode. The encoder connectors are compatible with the 4I30 and 4I Programmable digital filtering is used on encoder inputs to reject input noise.

The 4I74 counters may cleared individually. Each counter has a option to be cleared or latched by either the rising or falling edge of the index signal.

Maximum count rate of the 4I74 with TTL inputs is 4 million counts per second. The 4I30 is intended for robotic, motor control, measurement, and instrumentation applications. Each time a logic transition occurs at one of the quadrature inputs, the count is incremented or decremented, providing a resolution of four times the line count of the encoder used. The 4I30 counters may cleared individually, or all counters may be cleared simultaneously.

The 4I30 can be programmed so that the count is synchronized with the external index signal. Index signal polarity is jumper selectable. Maximum count rate of the 4I30 is 1. One counter may be configured to provide a timing reference for velocity calculations instead of quadrature input.

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