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Absolute rotary encoders use optical, mechanical, or magnetic indexing for angular measurement. They do not lose their position after power-down, but instead provide absolute position upon power-up without requiring a home cycle or any shaft rotation.
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AC motor drives interface controllers to AC motors. They match the control signals (voltage and power levels) as well as the signal type (analog or digital). They also provide power conversion, amplification, and the sequencing of waveform signals.
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Computers are programmable electronic devices that accept data, execute prerecorded instructions, perform mathematical and logical operations, and output results.
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Data acquisition is the digitizing and processing of multiple sensor or signal inputs for the purpose of monitoring, analyzing and/or controlling systems and processes. Signal conditioning includes the amplification, filtering, converting, and other processes required to make sensor output suitable for rereading by computer boards.
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Data acquisition I/O modules or cards have both input and output functionality. Digital or discrete I/O modules include on-off signals used in communication, user interface, or control.
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Data acquisition input modules accept sensor and other signal output for data acquisition systems. They may include signal conditioning prior to the analog-to-digital conversion stage.
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Data acquisition output modules or cards transfer amplified, conditioned, or digitized signals.
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Data loggers and data recorders acquire digital data from sensors and other signals. They are primarily used to store data for subsequent downloads to a host PC, but may also include real-time features such as monitors and alarms.
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DC motor drives act as the interface and power supply between a motion controller and a DC motor.
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DC motors are most commonly used in variable speed and torque applications. They include brushless and gear motors, as well as servomotors.
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DC power supplies accept an input power and output the desired form of DC power. Common types of DC power supplies include linear power supplies, switching power supplies, DC-DC converters, and silicon controlled rectifier (SCR) type power supplies.
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DC servomotors are generally small and powerful for their size, and easy to control. Common types of DC servomotors include brushless or gear motors.
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DC to AC inverters are used for converting direct current (DC) into alternating current (AC). They are also known as DC to AC converters.
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DC-DC converters accept DC input and provide regulated and/or isolated DC output in various applications including computer flash memory, telecommunications equipment, and process control systems.
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Flexible couplings connect rotating members while allowing some degree of angular or parallel misalignment.
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Gearboxes and gearheads are speed reducers that consist of a set of gears, shafts, and bearings in an enclosed housing. In converting inputs to outputs, they reduce RPM and increase torque.
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Gearmotors consist of an AC or DC motor with an integral gearbox or gear head that steps delivered speed up or down.
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Handheld computers are portable devices including notebook and subnotebook computers, palmtops, and PDAs.
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Heat sinks are thermally conductive, usually metallic components or devices that absorb and dissipate heat generated by electronic components such as computers. Common heat sink materials include aluminum, copper, and steel.
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Human machine interfaces (HMI) are operator interface terminals with which users interact in order to control other devices.
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Incremental rotary encoders are multi-turn sensors that use optical, mechanical, or magnetic index-counting for angular measurement. They contain no absolute reference, but instead count relative to the turn-on position.
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Lifting jacks are used for leveling or positioning heavy equipment, or for supporting structures. They use screw or cylinder-based actuators and are powered by hydraulic, mechanical, electric, or manual methods.
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Limit switches are electromechanical or solid state devices that require the physical contact of an object with the switch’s actuator to make the contacts change state.
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Electric linear actuators have an output rod that provides linear motion via a motor driven ball screw, lead screw, or ACME screw assembly. The actuator's load is attached to the end of a screw or rod and is often unsupported.
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Linear motors generate force only in the direction of travel. They are capable of extremely high speeds, quick acceleration, and accurate positioning.
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Linear slides are simple linear motion devices composed of a stationary base and a moving carriage. Linear stages are slides with a drive mechanism that provide controlled, precise positioning along a linear axis.
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Memory modules are computer chips used to add memory to a computer.
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Motion control systems contain matched components such as controllers, motor drives, motors, encoders, user interfaces and software. Components in these systems are optimally matched by the manufacturer.
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Motion controllers range from simple linear controllers to complex, user-programmable modules that act as controllers within complex integrated multi-axis motion systems.
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Motor controllers receive supply voltages and provide signals to motor drives that are interfaced to motors. They include a power supply, amplifier, user interface, and position control circuitry.
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Motor speed controllers are electronic devices that control motor speed. They carry specifications for drive type, product classification, electrical ratings, and operating parameters.
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Network cards and network controllers are expansion boards inserted into computers that allow them to connect to a network.
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Network media converters change the signal of encoded data from one media type to another as it is transmitted through, or between, networks.
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PC/104 modules are tied to the integrated system architecture (ISA) bus standard that is used mainly in embedded systems. Modules are 3.6" x 3.8" and can be self-stacked to save space.
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PCI products are devices that use the peripheral component interconnect (PCI) bus standard. PCI products include bridges, extenders, and power supplies. They also include bus interface, adapter, memory, mass storage, networking, and serial communications modules.
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PCMCIA bus interface cards translate data from a PCMCIA bus to another type of bus, and vice versa. They are used to connect two incompatible buses.
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PCMCIA cards and accessories follow standards developed by the Personal Computer Memory Card International Association (PCMCIA), an international standards body and trade organization. PCMCIA cards, or PC cards as they are commonly known, were designed originally for adding memory to portable computers, but are now used in a variety of devices.
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Power supplies are devices that produce AC or DC power. This grouping includes current sources, DC power supplies, AC-DC adapters, DC-DC converters, AC power sources, and DC-AC inverters.
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Programmable power supplies are digitally controlled power sources that provide accurate and adjustable levels of voltage, current, and frequency. They include a processor, voltage/current programming circuits, current shunt, and voltage/current read-back circuits.
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Radio frequency identification (RFID) products read or write data to RF tags that are present in a radio frequency field projected from RF reading/writing equipment.
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Rotary limit switches use physically-actuated levers to rotate a shaft and operate the contacts in a switch, making them change state.
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Rotating unions allow fluids to be transferred between stationary and rotating components or equipment.
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Serial communication products are used in industrial and commercial systems to transmit data bit-by-bit, or sequentially, over a single wire. They include serial servers, serial hubs, serial adapters, serial data converters, serial routers, and serial multiplexers.
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Serial data converters are used to interconnect two different serial standards, such as RS232 to RS422, USB to RS232, etc.
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Servo drives provide electrical drive outputs to servo motors in closed-loop motion control systems where position feedback and corrective signals optimize position and speed accuracy.
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Stepper motor drives power unipolar and bipolar stepper motors in full step, half step, and microstep motion control applications.
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Stepper motors use a magnetic field to move a rotor in small angular steps or fractions of steps. They provide precise positioning and ease of use, especially in low acceleration or static load applications.
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Universal process controllers constitute a broad area of control devices that may be employed in the monitoring and control of many different process variables, including temperature, pressure, flow and other values.
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USB products is a general search form that covers a wide range of devices that use the universal serial bus (USB) standard. USB products include host controllers, adapters, hard drives, CD-ROM drives, hubs, modems, faxes, and routers.
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