Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Integrated AC Servo Motors save costs JVL, which is the European leader in the development of new servo- and step motor technology, has developed a series of compact integrated motors, called the “MAC Motor”. The MAC 50 – 141 series The MAC 400 – 750 series (without and with brake) The MAC motor is an AC servo motor and controller combined in a single unit, offering previously unseen low pricing for the OEM market. Integrating electronics in a motor has been achieved previously, but never in such a compact unit with true AC servo performance. In the MAC motor, the servo motor, hall sensors, encoder and control circuitry have been especially designed by JVL to provide a self-contained, integrated unit in which the driver and controller are mounted behind the motor in a sealed housing. System intelligence is thereby decentralized by off-loading control functions to the device level. This makes the MAC motor well suited for distributed control architectures which are prevalent in factory automation processes today. The MAC motor is available in 2 sizes. The smaller 50, 95, 140 or 141W, and the bigger 750 W. The motors use standard flanges so the MAC motors can directly replace a step motor without mechanical modification. Motor parameters are set-up and programmed via an RS232 port using Windows software MacTalk. Numerous Advantages There are many benefits achieved from having the intelligence at the device level. • Reduced material costs Because the drive and controller are in the motor most cabling to a control panel is eliminated • Reduced labor costs With cabling eliminated, assembly time is greatly reduced • Better quality & reliability Fewer connections, less wiring • Ease of serviceability Because all electronics are self contained you simply change out the motor • Better noise immunity, less noise transmission I/O is integral eliminating noise induced from external wiring issues Switching noise from the drive due to commutation is contained in the motor • Reduced setup time 4th order digital filter requires only one tuning parameter for load or reflected inertia • OEM cost savings Modular approach means you only pay for the functionality required Modular Approach JVL has adopted a modular approach to system functionality. The MAC line starts with a base model that includes the hall-effects, encoder, drive and controller with basic motion profiling. Application specific requirements for I/O, connectors, network and PC/PLC options are handled through the use of add on modules which plugs easily into the motor housing. In this manner the customer only pays for the functionality necessary for the specific application. Modules adapts motor to application Base model • Analog ±10V input for velocity or torque control • Pulse/direction inputs • Serial command interface using RS-232/422 • Encoder In & Out with gear following Option Modules • RS-232/485 with D-sub connectors and status LED’s • PLC interface for positioning via I/O • µPLC with 8 optoisolated 24V inputs & 4 outputs at 300ma each • Profibus interface • CAN/DeviceNet interface • High Speed serial RS485 interface for multiaxix applications • Bluetooth wireless interface • WLAN wireless interface • Multiple connector and cable options Simplified Tuning - Adjust 1 Parameter Only JVL has developed a revolutionary approach to tuning the MAC motor. A typical servo system uses a PID algorithm which is a 1st or 2nd order filter. The MAC motor incorporates a 4th order digital filter which requires only a single adjustment based on reflected inertia of the load. This high order filter eliminates the “art” of tuning and gives the following benefits: • • • • • Shorter installation and commissioning times A stiffer system with shorter positioning times. Inexperienced users can readily set-up the servo system. Oscillations due to non-linear mechanical systems are avoided. Minimum positioning error during operation and halt. Software Anyone using the MAC motor will be positively surprised how well the 6th-order filter developed by JVL handles non-linear and undamped systems. The controller operates 100% digitally of course, and easy set-up of the motor is accomplished by the supplied Windows software MacTalk. Internet upgrades are an integrated part of the MAC concept. If an update of MacTalk or the motor’s firmware is required, the user simply selects ”Update MacTalk” or”Update Firmware” and MacTalk will automatically download the latest version from JVL´s Internet server. It cannot be easier. Power supply Powering the MAC motors is simple. The smaller types only require typically a 24V – 48VDC connection while the bigger types only requires connection of a mains voltage of either 115 or 230VAC. The complete mains power supply is built-in. To ensure correct and effective emergency-stop procedures, the encoder and microprocessor circuitry in these types must be powered using 24VDC. Switching technology is used to ensure large energy savings and thus reduction of heat generation when the voltage is regulated to the internal control circuits. Features The basic motor offers the following standard features: • Operating commands from PC/PLC via RS232/422/485 • Pulse/Direction or quadrature inputs for electronic gearing • A+B encoder output • • • • • • • • • Velocity and torque control, either controlled digitally or via ±12bit, ±10V inputs Positioning via digital interface Software-controlled end-of-travel stops Selection of acceleration, maximum velocity, torque, etc. 6th-order servo filter Sine commutation with 2000 PPR encoder. (8000 pulses/revolution.) Alarm and ”in position” outputs 3 inputs and 3 outputs for High Speed start/stop and capture applications Internal Power Dump Via the use of expansion modules, the following additional features are offered: • Profibus DP module, enabling connection to 12Mbit Profibus. • CANbus/CANOpen module with 6 in/ 2 out for sensors and PLC • Nano PLC, containing a single controller that can position on the basis of 8 optically isolated inputs. This module can accomplish 80% of positioning applications. • High-speed serial RS485 interface that enables multi-axis operation so that robotic movements and advanced XYZ operation is possible at high speed. Can additionally interface directly to IEC61131-3 softPLC. • Expansion modules are available for IP42 (SUB-D) or IP67 (cable gland or M12 connector). • Bluetooth and WLAN Wireless modules • Other modules are under development, JVL can also supply customised modules that enable these motors to be adapted to almost any task. Other Features and Options • • • • Torque mode homing SW position limits IP67 versions of the smaller types for full wash down option Planetary gear heads with ratios of 3, 5, 10, 20 or 100:1. Further information can be obtained from JVL Industri Elektronik A/S, Blokken 42, 3460 Birkerød, Denmark, tel.: +45 45 82 44 40. E-mail: [email protected] Download text and photos directly from: http://www.jvl.dk/default.asp?Action=Details&Item=594