UPDATE.JUL–Motors and Controls–pm Product Update: Motors and
Controls
This sampling of recently introduced motors and controls is indicative of
the small size, high power, and increasing drive complexity required for
today's applications
Brushless dc motor incorporates planetary gear reducer
The 8BLG535-01 combines a brushless dc motor with a rugged planetary
gear reducer for high-power, high-reliability applications. The 0.750
(Dia) x 3 (L)-in. gear motor delivers a continuous 40 W, with a peak of
100 W. The 5.5-oz. device uses rare-earth magnets and high-strength gears
for a peak torque of 60 oz.-in. with a peak speed of 4,000 rpm at the gear
output shaft. The gear motor has integral Hall-effect sensors and may be
speed-controlled with a standard three-phase electronic drive. ($300
ea/large qty–stock to 3 days.) American Precision Industries Rapidsyn
Div. Oceanside, CA David Sears 619-439-7500 Fax 619-722-5428
3500
Switch-mode driver runs at 48 V with 10 A
The Model V740 is a standalone, microstepping switch-mode motor driver
that is compatible with the company's model V540 VME/VXI quad
microstepping motor driver. The module has two bipolar, switch-mode,
constant-current motor coil drivers, output low-pass filters, and a
field-wiring barrier strip for motor windings, power input, and
limit-switch connections. The current can be set from 0.5 to 10 A using a
DIP switch. A 48-V external dc power supply is required.Motor coil and
power input fusing are provided. The V740 comes with screw-terminal
connections for power input, motor windings, limit switches, index sensor,
and spare digital inputs. Up to four modules can be mounted on can be
supported on the company's V744 rack-mount chassis. (V540, $1,200; V740,
$432–6 to 8 weeks ARO.) Highland Technology, Inc. San Francisco, CA
David Taeler 415-753-5814 Fax 415-753-3301
20-mm motor comes in synchronous and stepper versions
The UAG and UAT are 20-mm, tin-can type, reversing synchronous and
stepper motors, respectively. The motors are 17.2 mm thick and weigh 25 g.
The UAT stepper motor is available in two versions. The first version
uses a standard rotor and achieves a holding torque of 5.7 mNm and 4.2
mNm, for the two- (UAG 1) and four- (UAG 2) phase option, respectively.
The second version uses a neodymium rotor and achieves a holding torque of
7.0 mNm and 5.3 mNm for the two- (UAG 3) and four- (UAG 4) phase versions,
respectively. All have a step angle of 18 degrees, rotor inertia of 0.3
g-cm3 , an axial force of 1 N, and a thermal resistance at 0
Hz of 40 K/W. The UAT synchronous motor is reversible, has a power
consumption of 1/1.1 W at 50/60 Hz, and a maximum speed of 600/720 rpm.
The running torque is 2 mNm at maximum speed. (UAG 1, $9.00; UAG 2, $9.69;
UAG 3, $9.45; UAG 4, $10.18; UAT 1, $10.90–stock from 4 to 5 weeks.)
Burgess SAIA, Inc. Buffalo Grove, IL Keith Scraper 708-215-9600 Fax
708-215-9606
Brushless motor is combined with amplifier and controller
The Brushless Current Loop (BCL) Series amplifier and the
Commutation-Velocity Board (CVB) are available along with the company's
line of rare-earth permanent magnet brushless motors. The BCL and
Hall/encoder CVB provide sinusoidal commutation of the motor. Connections
are via circular MS-connectors for the motor connections and screw
terminations for the motor feedback, amplifier, and user/controller I/O.
Amplifiers range in peak/continuous current from 10/5 to 80/40 A, while
the motors range in torque from 13 lb-in. at 4,000 rpm to 306 lb-in. at 2,
100 rpm. (13 lb-in. system with motors, encoders, amplifiers, and
supplies, less than $1,030/axis in large qty–stock to 2 weeks.) Westamp
Inc., Santa Monica, CA Sales Dept. 310-393-0401 Fax 310-451-1058 EEM
FILE 3500
Two-phase stepper is bidirectional
Designed to provide high thrust in a linear mode, the 46000 Series of 1.
8-in. subfractional-horsepower stepper motors incorporate a threaded rotor
in conjunction with a lead-screw shaft. The motor shaft moves in linear
increments of 0.001, 0.002, 0.004, or 0.008 in., depending on motor
selection. The actuator shaft provides a minimum of 0.950 in. travel with
a captive screw, and 2.50 in. minimum travel with a noncaptive screw.
Running of a 5- or 12-Vdc supply, the motors have a power consumption of
10 W and a temperature rise of 75 degreesC. The devices weigh 255 g,
measure 1.175 in. deep, and have a mounting dimension of 2.187 in. between
holes. The rotor inertia is 25.0 g-cm2 . Rotary versions are
also available. (Captive, $150; noncaptive, $165; rotary, $90–2 to 3
weeks ARO.) Haydon Switch & Instrument, Inc. Waterbury, CT Al Palmero
203-756-7441 Fax 203-756-8724
PC/AT board provides multiaxis motor control
Capable of synchronizing two, three, or four axes of motion, the AT6400
PC/AT-based motor-control board uses incremental feedback on all four
axes. The controller has a maximum step output frequency of 1.6 MHz for
microstepping motor drives and high-speed servo drives. The board has 24
programmable inputs and 24 programmable outputs. An auxiliary connector
board is provided for I/O (P?hoenix screw terminals), motor drive (15-pin
D shell), joystick (25-pin D shell), and the 24 inputs and outputs (50-pin
headers). The connector board also contains an on-board power supply for
up to 1.5 A. ((Item code COM592, $1,975 to $2,275–available now.) Parker
Hannifan Corp. Compumotor Div. Rohnert Pk., CA Sales Dept.
800-358-9070 Fax 800-328-8087
Sales Leads go to this address: Parker Compumotor Ad Manager PO Box
500, Harrison City, PA 15636
Step motors suit high-torque applications
The P Series of size-65 step motors offer nominal torque ratings of 2,
000, 4,000, and 8,000 oz-in. in one-, two-, and three-stack versions,
respectively. Internal screw-terminal connections permit either series or
parallel winding configuration. The motors comprise a 1.8 degrees
permanent magnet and are rated to 140 degreesC. The body and shaft are
sealed for industrial environments. ($1,833 to $2,697–stock to 1 week.)
Empire Magnetics, Inc. Rohnert Park, CA Sales Dept. 707-584-2801 Fax
707-584-3418
Motion indexer controls one to four axes
For controlling one to four axes, the MMA-4S step motion controller uses
the CY545 absolute positioning microprocessor. The processor is capable of
16 million steps in a single move at 30,000 steps/s, +/- 0??? steps. The
controller is designed for microscopes, pick-and-place, peristaltic pumps,
and X-Y-Z table. Control of speed, ramping, homing, and accessory I/O is
selected by high-level ASCII commands sent over a serial interface. The
commands can be stored 2 Kbytes of on-board EEPROM. Various ready-to-step
application software packages are available. The unit measures 3 x 2 x 6
in.–custom enclosures are available. (One axis, $350; three axes, 2-A
drivers, ready to step, $1,000–stock to 1 week.) United Motion, Santa
Clara, CA ????????
PC-board-based controller has high step rate
With an output step rate of 2,500,000 steps/s, the CLC12000 PC-compatible
indexer board generates clock and direction signals for one, two, three,
or four axes of control. The indexer can control speed, ramping, position,
and I/O, with encoder feedback for all axes and a mark pulse input for
precision stopping. The board has TTL/CMOS-compatible inputs and uses a
standard 37-pin D-sub connection. For one and two axes of control, one
slot is required; for three and four axes, two slots are needed. The
stepping speed is independent of computer limitations. Control software is
included. (Single axis, $475; four axes, $1,000–4 to 6 weeks ARO.)
Anaheim Automation Anaheim, CA Joanne Witt 714-992-6990 Fax
714-992-0471
Brushless dc amplifier runs at 20 kHz
The Model BDC-0250 brushless motor servo amplifier offers an output of 20
kHz. The board will accept 24 to 60-Vdc input (unregulated) and provide a
trapezoidal, 5-A continuous and 10-A peak drive. The drive is supplied via
a 90% efficient MOSFET power bridge to three-phase Wye- or delta-connected
brushless motor windings. An optional on-board dc to dc converter provides
all +/- 12- and +/- 5-Vdc supplies. Available options include
transconductance, with or without a power supply, and a velocity version??
with or without a power supply. Board-mounted pots allow current and gain
limit adjustments, while LEDs indicate amplifier and motor status.
Quick-connect terminal strips are provided. (Basic version with
transconductance, from $220–4 to 6 weeks ARO.) MFM Technology, Inc.
Ronkonkoma, NY William Brights 516-467-5151 Fax 516-467-5176
3500
Size 17 brushless dc motor develops 33 oz-in. of torque
Available in both housed and unhoused versions, this brushless dc motor
develops a peak torque of 33 oz-in. for up to 2 s. The motor has a 3.2-ms
mechanical time constant, a 182-krad/s torque-to-inertia ratio, and a
motor constant of 2.83 oz-in.
6,800 rpm with a maximum continuous torque of 7 oz-in. The housed version
has an axial length of 1.625 in. with a range of custom shaft
configurations available. The operating voltage is 25 Vdc. ($130 to $266
ea/100–available now.) Astromec, Inc., Carson City, NV Fred Sutherland
702-883-9226 Fax 702-883-9228
Modular drive suits multiple-axis applications
Suitable for four-, six-, or eight-lead step motors, the Model SS2000MD7
bipolar PWM drive can operate a SLO-SYN step motor in increments of 1/2,
1/10, 1/25, or 1/200 microsteps. Control signals are optically isolated
from the drive signals and a separate power supply provides the required
dc power. The drive has full short-circuit, thermal, undervoltage, and
transient overvoltage protection. Other features include switch-selectable
current levels from 1 to 7 A with an input of 24 to 75 Vdc, and
switch-selectable step resolution. No external resistors or jumpers are
required. The drive measures 4.375 x 1.36 x 5.73 in. weighs 1.5 lb, and
has an operating temperature range of 0 degrees to 50 degreesC.
($450–stock to 5 days.) Superior Electric/Warner Electric Bristol, CT
Robert Linden 203-582-9561 Fax 203-589-2136
Stepper motor drives deliver high-speed torque
The Super SD stepper motor drives use a proprietary output circuit based
on power MOSFETs instead of bipolar devices for a claimed 80% improvement
in high-speed torque. The drives run off dc voltages as high as 60 V, with
several units running together operating directly from an isolating
transformer for multiaxis applications. Each drive produces an auxiliary
24-Vdc output and is intended for use with standard two-phase hybrid or
permanent magnet stepper motors. The drives are available with 2, 3, or 5
A of output current. For matching, the current can be reduced to 70% of
maximum current via jumpers. Stepping rates reach 50 kHz. Using a standard
200-step motor, the drives have a resolution of up to 400 steps/rev.
operating in half-step mode. ($200 to $300–stock to 2 weeks.) Parker
Hannifin Corp. Digiplan Div., Harrison City, PA Sales Dept.
800-358-9070 Fax 800-328-8087
Send leads to. Parker Digiplan Ad Manager, PO Box 500, Harrison City, PA
15636
Servo amp drives multiple motor types
Delivering up to 20 A (continuous), the AMC-2400 servo amplifier can
drive brush, brushless dc and ac, variable reluctance, and ac induction
motors. Using a three-phase current loop, the amplifier can operate in
either a trapezoidal or three-phase sinusoidal mode. For brushless and
variable-reluctance motors, the AMC-2400 accepts two- or three-phase
current command input for position feedback. Hall-effect sensors,
incremental encoders, or resolvers can also be used. Protection provides
for low voltage, over current, over temperature, shorted motor, rms
current limit, and regenerative fault. LEDs give amplifier status
indication, and a potentiometer gives torque-limit control. The enable,
forward limit, and reverse limits are optically coupled. The device measures
10.5 x 6 x 4 in. ($695–2 weeks ARO.) Advanced Motion Controls, Inc.
Princeton, WI George Holling 414-295-3500 Fax 414-295-3504
3500
Stepper motors are miniature
Designed to address the trend toward miniaturization in office products,
these stepper motors have diameters of 0.3 to 0.8 in. Features include
bipolar or unipolar windings, voltages of 6 to 12 Vdc, and an 18 degrees
step angle. Holding torques range from 5 g-cm (0.3-in. diameter) to 35
g-cm (0.6-in. diameter.) (Under $5 ea/5,000 per year–available now.) NMB
Technologies Inc. Chatsworth, CA Jeff Miller 818-341-3355 Fax
818-341-8207
Single-axis motion controller is DSP-based
The Unidex 100 single-axis motion controller includes a DSP-based
indexer, integral motor driver (stepping, dc brush, or brushless servo),
and power supply in a panel-mount enclosure. Features include
master-slave, cam profile, and registration-based moves and
output-on-the-fly capability. The controller comes with 32 Kbytes
nonvolatile user program memory and an RS-232/422 port (IEEE-488
optional). Other features include autotuning to reduce setup time and
multitasking for nonmotion tasks such as a background PLC. ($1,550–stock
to 3 days.) Aerotech, Inc. Drive Components Div. Pittsburgh, PA Keith
Ross 412-963-7470 Fax 412-963-7459
Step motor delivers high torque
As part of the PK Series of step motors, the PK266-02B is a size 23 motor
with a pull-out torque of over 80 oz-in. This at pulse rates exceeding 3,000
half-steps/s with a 24-Vdc, 2 A/phase bipolar chopper. The PK Series
motors have a step angle of 1.8 degrees and are available in lengths of 1.
54 (PK264), 2.13 (PK266), and 2.99 (PK268) in., with holding torques
ranging from 54.2 to 187.5 oz-in. ($100–4 to 5 weeks ARO.) Oriental
Motor U.S.A. Corp. Torrance, CA Lori Chong 310-515-2264 Fax
310-515-2879
Single-axis controller is fully integrated
Intended to simplify servo system design, the Xpress single-axis PC-based
motion controller accepts position feedback information and delivers motor
power via a 2-A, 10-V bridge driver. The board combines a high-speed
counter, a Motorola 56001 DSP-based servo controller operating at 20 MHz,
and a 20-W dc power amplifier. The Xpress accepts sine/cosine or AB
quadrature input from laser interferometers or linear encoders. The DSP
allows a 10-MHz input data rate and a 10-kHz servo update rate. A Windows
confirmation program is included, along with linkable C software libraries
for both Microsoft and Borland versions of C. ($1,474 ea/100–stock to 1
week.) Teletrac, Inc., Santa Barbara, CA Bart Norton 805-964-9260 Fax
805-683-1570
Brushless dc motors are totally enclosed, nonventilated
The Type 22B brushless dc motors use a totally enclosed, nonventilated
construction for industrial applications. The three-phase, four-pole motor
is available with torque constants of 47, 48, and 50 oz-in. with a peak
torque of 104, 140, and 188 oz-in., respectively. The 22B has a typical
operating speed of 2,500 rpm, with a maximum speed of 4,000 rpm. The
radial- and axial-load capacities are 25 lb. The motors are specifically
designed to be driven from the manufacturer's range of motor controllers.
($100 to $150 ea/100–stock to 1 week.) Bodine Electric Co. Chicago, IL
John Horvath 312-478-3515 Fax 312-478-3232
Board provides four-quadrant control
Available in a Eurocard format, the Model 5-156-028-00 provides
closed-loop four-quadrant pulse-width-modulated control of speed and/or
torque of brushless dc motors. Features of the board include a single 24
to 60-Vdc power supply, adjustable current to 18 A, velocity feedback from
commutation sensors, encoder, or dc tachometer, and a differential
amplifier for +/-10-V input command. Variables can be set using jumpers
or trim potentiometers that allow user adjustment of input command gain,
feedback gain, velocity loop gain, peak current, and the derived velocity
scale factor. Fault protection is provided for excess temperature, speed,
voltage, current, and motor stall. The Eurocard measurements are 100 (W) x
220 (L) x 32 (H) mm. ($238 ea/100–2 to 4 weeks ARO.) Eltrol Corp.,
Canoga Park, CA Richard Yaros 818-709-0131
UPADD.JUL–pm–addition to Motors Update Motors offer
increased power output
A line of housed brushless dc motors has extended lengths to increase the
shaft output capability for any given frame size, allowing an increase in
torque without an increase in motor diameter. The maximum length increases
are: DIH18 from 1.8 to 2.1 in., DIH23 from 1.9 to 2.2 in., DIH30 from 2.2
to 2.5 in., and DII38 from 3.2 to 3.9 in. The stall torque ratings are
from 4 to 230 oz-in. and the peak torque ratings are from 12 to 650 oz-in.
Standard maximum speed is 15,000 rpm. Higher speed and power output may be
achieved in modified units. ($50 to $600, depending on size and
volume–stock to 8 weeks.) BEI Motion Systems Co. Kimco Magnetics Div.
San Marcos, CA Mike Lopez 619-744-5671 Fax 619-744-8815
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