Download Integrated AC Servo Motors save costs

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:
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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
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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
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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]
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