The Class 8839 Econo-flex Type 3R drive is a packaged, outdoor-rated, adjustable speed drive for HVAC and pump applications. This enclosed drive is suitable for overcrowded mechanical rooms and long conduit runs because it can be installed outdoors. Built for extreme environments, the Type 3R includes a thermal management system that allows equipment operation in -10º to +50ºC ambient temperatures. The drive is equipped with a coordinated circuit breaker for short circuit protection, eliminating the need for semi-conducting fuses. In addition, motor isolation and bypass contactors have a mechanical and electrical interlock to prevent accidental backfeeding. Installation time can be reduced using the drive’s bottom conduit entries.
SquareD/Schneider Electric, Palatine, IL. Free info—Circle 210.
www.rsleads.com/202df-210
Digital driver. The DVD-2 pulse-width modulated solenoid driver with modularized electronic printed circuit boards serves as a power amplifier to drive virtually all types of motors, pumps, valves and devices that respond to PWM signals. HED Inc,
Hartford, WI. Free info—Circle 204. www.rsleads.com/202df-204
Step motor driver. Integrating the company’s microstepping driver and programmable indexer with multiple user I/O ports, the all-in-one DCB-264 motion control system operates low inductance step motors from a single supply voltage. A bi-polar chopper drive circuit with 20 kHz chopping rate is used for maximum performance. Step rates in excess of 20,000 SPS at microstep resolution to 1/8 step and wave drive are possible
Advanced Micro Systems Inc, Nashua, NH. Free info—Circle 202.
www.rsleads.com/202df-202
NEMA 34 servomotor. The SilverMax 34HC motor is offered in four stack lengths with more than 3200 in-oz. of torque and a maximum power of 600 watts. This system combines motor, controller, driver and encoder in one unit.
QuickSilver Controls Inc, Covina, CA. Free info—Circle 203.
www.rsleads.com/202df-203
Control chip. The PCD-4541 is a four-axis motion control chip designed for two-phase unipolar or bipolar stepper motors. This control chip can output CW/CCW pulses or excitation signals directly to drive chips.
Nippon Pulse Motor Co Ltd, Radford, VA. Free info—Circle 196.
www.rsleads.com/202df-196
AC drive. The GP10 AC drive is dual-rated for variable torque and constant torque loads. This open-loop vector drive offers precise speed regulation for both HVAC/R and other industrial applications. It features smart speed search for accurate capturing of load speed after inadvertent shutdown, disable reverse operation and automatic restart. Soft-switching technology, which decreases motor spikes, reduces the need for output filters.
AO Smith Corp, Milwaukee, WI. Free info—Circle 213.
www.rsleads.com/202df-213
Miniature step motor. The 25mm PF25 step motor has an integral lead screw shaft as well as either anisotropic ferrite or high-strength neodymium magnets. The 0.12-in. dia. threaded shaft is available in lengths up to 1-in.
PMI Danaher, Amherst, NY. Free info—Circle 198. www.rsleads.com/202df-198
Digital load monitor. The Digital Load Monitor (DLM) is a monitoring device capable of accurately measuring load on electrical motors. It also warns of overload and underload conditions. The DLM alarm is triggered by over- or under-loading.
Emerson Motors, St Louis, MO. Free info—Circle 197.
www.rsleads.com/202df-197
DC motor control. This microprocessor-based, variable-speed motor control is designed for battery-powered electric vehicles. It reduces heat buildup and operating temperatures in both the controller and motor at any speed.
Axiomatic Technologies Corp, Mississauga, ON. Free info—Circle 207.
www.rsleads.com/202df-207
Combination starter. The CX7 enclosed combination starter consists of the KT7 motor circuit controller and a CA7 contactor for remote operation, eliminating the need for a disconnect, short-circuit protection device, contactor and overload relay to perform the same task. The KT7 controller combines several functions: current limiting short-circuit protection, Class 10 thermal overload protection, load switching and signaling in one device.
Sprecher + Schuh, Houston, TX. Free info—Circle 211.
www.rsleads.com/202df-211
Variable speed drives. The SCM Series variable speed drives are designed for single-phase 220V supply with a power range of 1/3 to 3 hp. The 1 hp unit requires a small 5.75- x 2.9-in. panel space. The control terminal block has 11 terminals to configure I/O logic as well as analog inputs and outputs. The drive is configurable for almost any motor control requirement including reversing jogging and multispeed operation.
AC Technology Corp, Uxbridge, MA. Free info—Circle 199.
www.rsleads.com/202df-199
Geared stepping motors. The RK Series five-phase geared stepping motor system features a Smooth Drive function in which the driver microsteps internally. Smooth Drive reduces motor shaft vibrations and audible noises.
Oriental Motor USA Corp, Torrance, CA. Free info—Circle 201.
www.rsleads.com/202df-201
Piezoelectric motors. The HR Series piezoelectric motors range in size from a single element motor, providing 0.45 kg of force, to an eight-element motor, providing 3.6 kg of force. These motors can drive both linear and rotary stages. Nanomotion,
Ronkonkoma, NY. Free info—Circle 205. www.rsleads.com/202df-205
Explosion-proof motors. This line of explosion-proof motors is available in NEMA 449T frame sizes from ¼ to 300 hp. The motors are covered with a chemically resistant, two-part epoxy paint. Custom motor designs are available.
Baldor Motors and Drives, Fort Smith, AR. Free info—Circle 195.
www.rsleads.com/202df-195
Frameless motors. Offering a low profile for direct drive applications, the low-profile, high-resolution ULT brushless frameless motors have axial lengths as small as 10mm, diameters up to 165mm and through-holes up to 120mm.
Applimotion Inc, Roseville, CA. Free info—Circle 212.
www.rsleads.com/202df-212
Compact digital servo drive. Designed for use with linear motors, the DR100EE25A20NAC digital servo drive is capable of encoder-based sinusoidal commutation of linear servomotors, with or without Hall sensors. The 20 kHz digital current loop uses SVM switching techniques that result in higher current loop bandwidth for high-precision, high-speed applications. Drive configuration and tuning can be accomplished through a graphical, intuitive Windows-based utility using serial RS232/485 communication port.
Advanced Motion Controls, Camarillo, CA.www.rsleads.com/202df-700
Stepper motor controller. The miniaturized TMC428 stepper motor controller IC with SPI interface controls up to three serial stepper motor drivers. Both the communication between the m-controller and the TMC428 and the communication between the TMC428 and stepper motor driver building blocks are made via a serial four-wire interface. Glue logic works with drivers that do not interface with the TMC428.
Trinamic North America Inc, Scottsdale, AZ. www.RSLeads.com/?202df-209
Constant torque motors. Speedmaster motors offer enhanced inverter-duty performance from 1 through 350 hp. Optimized for use with IGBT drives, these motors offer continuous, constant torque from zero to base RPM in packages of various sizes.
Leeson Electric, Grafton, WI. www.RSLeads.com/?202df-206
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Top Product
Digital driver. The DVD-2 pulse-width modulated solenoid driver with modularized electronic printed circuit boards serves as a power amplifier to drive virtually all types of motors, pumps, valves and devices that respond to PWM signals. HED Inc,
Hartford, WI. Free info—Circle 204. 
Step motor driver. Integrating the company’s microstepping driver and programmable indexer with multiple user I/O ports, the all-in-one DCB-264 motion control system operates low inductance step motors from a single supply voltage. A bi-polar chopper drive circuit with 20 kHz chopping rate is used for maximum performance. Step rates in excess of 20,000 SPS at microstep resolution to 1/8 step and wave drive are possible
Advanced Micro Systems Inc, Nashua, NH. Free info—Circle 202.
NEMA 34 servomotor. The SilverMax 34HC motor is offered in four stack lengths with more than 3200 in-oz. of torque and a maximum power of 600 watts. This system combines motor, controller, driver and encoder in one unit.
QuickSilver Controls Inc, Covina, CA. Free info—Circle 203.
Control chip. The PCD-4541 is a four-axis motion control chip designed for two-phase unipolar or bipolar stepper motors. This control chip can output CW/CCW pulses or excitation signals directly to drive chips.
Nippon Pulse Motor Co Ltd, Radford, VA. Free info—Circle 196.
AC drive. The GP10 AC drive is dual-rated for variable torque and constant torque loads. This open-loop vector drive offers precise speed regulation for both HVAC/R and other industrial applications. It features smart speed search for accurate capturing of load speed after inadvertent shutdown, disable reverse operation and automatic restart. Soft-switching technology, which decreases motor spikes, reduces the need for output filters.
AO Smith Corp, Milwaukee, WI. Free info—Circle 213.
Miniature step motor. The 25mm PF25 step motor has an integral lead screw shaft as well as either anisotropic ferrite or high-strength neodymium magnets. The 0.12-in. dia. threaded shaft is available in lengths up to 1-in.
PMI Danaher, Amherst, NY. Free info—Circle 198. 
Digital load monitor. The Digital Load Monitor (DLM) is a monitoring device capable of accurately measuring load on electrical motors. It also warns of overload and underload conditions. The DLM alarm is triggered by over- or under-loading.
Emerson Motors, St Louis, MO. Free info—Circle 197.
DC motor control. This microprocessor-based, variable-speed motor control is designed for battery-powered electric vehicles. It reduces heat buildup and operating temperatures in both the controller and motor at any speed.
Axiomatic Technologies Corp, Mississauga, ON. Free info—Circle 207.
Combination starter. The CX7 enclosed combination starter consists of the KT7 motor circuit controller and a CA7 contactor for remote operation, eliminating the need for a disconnect, short-circuit protection device, contactor and overload relay to perform the same task. The KT7 controller combines several functions: current limiting short-circuit protection, Class 10 thermal overload protection, load switching and signaling in one device.
Sprecher + Schuh, Houston, TX. Free info—Circle 211.
Variable speed drives. The SCM Series variable speed drives are designed for single-phase 220V supply with a power range of 1/3 to 3 hp. The 1 hp unit requires a small 5.75- x 2.9-in. panel space. The control terminal block has 11 terminals to configure I/O logic as well as analog inputs and outputs. The drive is configurable for almost any motor control requirement including reversing jogging and multispeed operation.
AC Technology Corp, Uxbridge, MA. Free info—Circle 199.
Geared stepping motors. The RK Series five-phase geared stepping motor system features a Smooth Drive function in which the driver microsteps internally. Smooth Drive reduces motor shaft vibrations and audible noises.
Oriental Motor USA Corp, Torrance, CA. Free info—Circle 201.
Piezoelectric motors. The HR Series piezoelectric motors range in size from a single element motor, providing 0.45 kg of force, to an eight-element motor, providing 3.6 kg of force. These motors can drive both linear and rotary stages. Nanomotion,
Ronkonkoma, NY. Free info—Circle 205. 
Explosion-proof motors. This line of explosion-proof motors is available in NEMA 449T frame sizes from ¼ to 300 hp. The motors are covered with a chemically resistant, two-part epoxy paint. Custom motor designs are available.
Baldor Motors and Drives, Fort Smith, AR. Free info—Circle 195.
Frameless motors. Offering a low profile for direct drive applications, the low-profile, high-resolution ULT brushless frameless motors have axial lengths as small as 10mm, diameters up to 165mm and through-holes up to 120mm.
Applimotion Inc, Roseville, CA. Free info—Circle 212.
Compact digital servo drive. Designed for use with linear motors, the DR100EE25A20NAC digital servo drive is capable of encoder-based sinusoidal commutation of linear servomotors, with or without Hall sensors. The 20 kHz digital current loop uses SVM switching techniques that result in higher current loop bandwidth for high-precision, high-speed applications. Drive configuration and tuning can be accomplished through a graphical, intuitive Windows-based utility using serial RS232/485 communication port.
Advanced Motion Controls, Camarillo, CA. 
Stepper motor controller. The miniaturized TMC428 stepper motor controller IC with SPI interface controls up to three serial stepper motor drivers. Both the communication between the m-controller and the TMC428 and the communication between the TMC428 and stepper motor driver building blocks are made via a serial four-wire interface. Glue logic works with drivers that do not interface with the TMC428.
Trinamic North America Inc, Scottsdale, AZ. 
Constant torque motors. Speedmaster motors offer enhanced inverter-duty performance from 1 through 350 hp. Optimized for use with IGBT drives, these motors offer continuous, constant torque from zero to base RPM in packages of various sizes.
Leeson Electric, Grafton, WI.