Technical Terms

We have easily defined motion control technology terms related to Ajinextek’s products.

Absolute Positioning Refers to a motion control system employing position feedback devices (absolute encoders) to maintain a given mechanical location.
AC servo A general term referring to a motor drive that generates sinusiodal shaped motor control currents.
Acceleration The rate at which something increases its velocity. Acceleration is usually measured in units of velocity change for each unit of time (inches/ second(velocity)/second (time)) and in this example would be written as in./sec/sec or in./sec2.
Accuracy The relative status of something compared to its absolute or perfect value. In motion control this will most often be a position description. A command may be sent to move 4.0". The accuracy of the system will be defined by how close to the absolute value of 4.0" the system can affect the move. Accuracy may be defined as a onetime incident or the average over a number of cycles or motions. Positioning accuracy will normally be defined in terms of deviation (+/- from theoretical) or limits (acceptable variation from theoretical: ie. 3.8"-4.2" define acceptable limits of variation around a theoretical point of 4.0")
Active Indicator A reference is made to an LED mounted on the base board or module, which provides visual confirmation of the status of the base board or module
Actual position The position of an axis relative to the commanded position. This may be the position at the end of the commanded move or the lag between command position at any point during the move and the actual position of the axis at that point. The later is commonly referred to as following error in motion control terminology.
Add-On How our module products are combined with the Base Board
Analog servo A servo system that utilizes analog control and feedback systems such as voltage variation, pressure changes etc. Analog servos are most commonly found in hydraulic and similar systems involving motion.
Analog signal A communication within the system that is accomplished by means of a signal that varies in direct relation to the intensity or magnitude of the external quality being measured. Typical examples are a 0-10 volt motor control signal, a hydraulic pilot pressure, a pneumatic control pressure.
Angular Acceleration Time rate of change of angular velocity (i.e. in a DC brushless motor)
Armature Component of an electro-magnetic machine that contains the windings that conduct the power producing component of current. These are commonly found in electric motors.
ASIC(Application Specific Integrated Circuit) Non-memory semiconductor chips designed for use in specific electronic information communication products, unlike general integrated circuits such as microprocessors and memory chips.
Axes of motion The specific major directions along which controlled movement occurs. Usually the number of these major directions employed in a specific machine. Usually defined as follows: X: Linear motion in positioning direction Y: Linear motion perpendicular to positioning direction Z: Vertical linear motion A: Angular motion around X (roll) B: Angular motion around Y (pitch) C: Angular motion around Z (yaw)
Axis A principal direction along which movement of a tool, component or work piece occurs.
Back emf, Kemf The voltage generated when a permanent magnet motor is rotated. This voltage is proportional to motor speed and is present whether or not the motor windings are energized.
Brush Conducting material which passes current from the d.c. motor terminals to the rotating commutator
Brushless DC motor Rotating self-synchronous machine with a permanent magnet rotor and with known rotor shaft positions for electronic commutation
Brushless servo A servo drive in which commutation of the current is accomplished electronically rather than through the use of mechanical brushes and a commutator. In a brushless motor, the windings are on the stator and the magnetic field is provided by permanent magnets in the armature. This results in lower inertial loadings and increased heat dissipation capability over a standard brush type motor.
Centralized control A control system in which all of the primary processing is done at a singlelocation rather than at multiple points throughout the system.
CHAMP 커넥터 A connector for connecting the controller to a terminal block or external device with parts mounted on the base board.
Circular interpolation The generation of an apparently circular motion through the coordinated movements of two axes. The actual path is a series of straight line approximations generated by software algorithms.
Commutation A term which refers to the action of steering currents or voltages to the proper motor phases so as to produce optimum motor torque. In brush type motors, commutation is done electromechanically via the brushes and commutator. In brushless motors, commutation is done by the switching electronics using rotor position information obtained by Hall sensors, a tachometer, or resolver.
Commutator Set of mechanical contacts arranged angularly or linearly, contacted by the brushes to provide the electrical path from the power source to the armature
Continuous current Current required to develop rated torque without exceeding the temerature rating
Continuous power output Steady state power output capability of a device in watts
Controller The controller can range from a simple switch to a separate computer completely capable of making decisions based on the information givenby he host, or user.
Converter The process of changing AC to DC and back to AC again. The term "converter" may also refer to the process in an adjustable frequency drive, consisting of a rectifier, a DC intermediate circuit, an inverter and a control unit.
Coordination The integration of the movements of two or more axes of motion so that the resultant motion is a path which none of the axes are capable of independently. Coordination may also involve the use of sensors and other internal or external commands in the integration effort which assist in effecting the movement or work desired.
cPCI A standard for industrial computers and buses for telecommunication. Systems that converted it into a PCI bus with 132Mbps frequency bandwidth that was adopted as a high-speed I/O bus for desktop PCs in the early 1990s.
Current Controller A system that utilizes an electronic method of limiting the maximum current controller available to a motor. This current is adjustable so that the motor's maximum current can be controlled and normally includes functions that serve as a protective measure to prevent extended overload conditions from damaging the motor or the controller.
Cut to length A sub routine within a motion control processor or stand alone processor that is designed to feed material being processed a pre-set distance prior to performance of a secondary function such as a cut off. Feedback systems are employed to insure repeatability of the set feed length.
DC bus A type of circuit or protocol that serves as a common communications pathway shared by several components and which uses a direct current voltage level as a reference. It may also be used to describe a power distribution system shared by multiple components within a machine or power distribution system.
Deceleration The rate at which something decreases its velocity. Deceleration is usually measured in units of velocity change for each unit of time (Inches/ second(velocity)/ second (time)) and in this example would be written as in./sec/ sec or in./sec2.
Decentralized control A control system in which the logic functions and input/output functions are located at individual pieces of equipment or sub systems and function essentially independent of each other. Normally the independent systems will have some means of communicating vital information with each other.
Deterministic scan time The frequency with which a Programmable Logic Controller (PLC) executes a program, including scanning all the inputs and outputs on the system. This time is usually measured in milliseconds. PLCs will normally read or "scan" the instructions in the logic program in set, sequential manner. The time required to read a specific instruction and all of the following instructions, returning to the initial instruction is generally referred to as scan time.
Device level network A means of putting sensors, actuators and other components on a common network cable that is connected to a PLC. It eliminates point -to-point wiring between the PLC and each devi
Diagnostic code A code (usually alpha numeric or numeric) that is displayed on some type of operator interface or within a program that indicates the status of a monitored component. Usually diagnostic codes are used to indicate the location and nature of a fault or error condition that requires rectification.
Dielectric Strength Ability of insulation to withstand a voltage with a specified maximum leakage current
Differential level Outputs a car for two analog input signals
Digital motion control A motion control system that utilizes binary coding for all logic and control functions. Analog inputs can normally be used on a digital system, but they must be converted through an analog to digital converter before being processed.
Digital servo A servo motor (see AC servo and Analog servo) which utilizes binary coding for all parameter generation and feedback.
Digital signal A signal that communicates information in electrical pulses that represent binary 1s and 0s. It is widely believed that digital signals can transmit more information more reliably in a given unit of time than analog signals.
DIP Switch A mechanical switch made of multiple switches grouped together and arranged together, mounted on the ISA BUS Type Baseboard (BIFR/BIHR) for setting the reference number and IRQ level of the board.
Direction of rotation Direction observed when facing the shaft extention associated with the motor mounting surface
DMA Direct Memory Access, a technology that speeds data up and down from memory to peripheral I/O rather than CPU
Drive An electronic device that translates a given command from a motion controller into the electrical current that turns a motor.
Duty cycle Relation between the on time and the off time of a device
Dynamic Link port Ports used to exchange signals through connections between boards
E-Stop A stop function which has all of the following requirements: - It shall override all other functions and operations in all modes. - Power to machine actuators that can cause a hazardous condition (s) shall be removed as quickly as possible without creating other hazards (e.g., by the provision of mechanical means of stopping requiring no external power, by reverse current braking for a Category 1 stop). - Reset shall not initiate a restart. - The emergency stop shall function as either a Category 0 or Category 1 stop. The choice of category of emergency stop shall be determined in accordance with the requirements of the application. - Where a Category 0 stop is used for the emergency stop function, it shall have only hardwired electromechanical components. In addition, its operation shall not depend on electronic logic (hardware or software) or the transmission of commands over a communication network or link. - Where a Category 1 stop is used for the emergency stop function, final removal of power to the machine actuators shall be ensured and shall be by means of electromechanical components.
Efficiency The efficiency of a motor is the ratio of mechanical output to electrical input. It represents the effectiveness with which the motor converts electrical energy into mechanical energy. Efficiency is expressed as a percentage.
Electromagnetic Interference (EMI) Electromagnetic energy disturbance that manifests itself in performance degradation, malfunction, or failure of electronic equipment
Electronic cam profiles A technique used to perform non-linear motion electronically similar to that achieved with mechanical cams.
Electronic clutch The process of generating a slave profile based on master position or time periods by enabling and disabling electronic cam or gearing functions.
Electronic gearing A method that simulates mechanical gears by electrically synchronizing one closed-loop axis to a second axis (open- or closed-loop) through a variable ratio.
Electronic line shaft A virtual axis that is used as the master axis on a machine to which other axes are synchronized by electronic gearing or camming profiles.
EMC/CE Testing of electrical devices to check their ability of adhering to conducted/radiated emissions. Set by the European Directive. Applications may need line filters, cabinet bonding, and shielded cabling to assist this effort.
Encoder A feedback device that translates mechanical motion into electrical signals indicative of actuator position. Incremental and absolute encoders are common varieties; as the names imply, their output indicates incremental or absolute changes of position.
Encoder resolution The number of electrically identified positions occurring in 360 degrees of input shaft rotation.
EnDat An interface that has become a standard for serial data transfer covering position and parameters.
Ethernet An open networking standard, Ethernet is widely used in office automation and is increasingly being used for packaging machine networks. Originally developed for communications speed of 1.5 megabits/sec, newer versions permit speeds up to l00 megabits/sec.
Event A change-of-state of an input parameter, such as the triggering of a limit switch or proximity sensor.
Fast Conversion Settling Time Time spent digitizing analog
Fault The error received when a drive or control has attempted an illegal process and becomes disabled.
Feedback The signal or signals received from a controlled machine or process to denote its response to the command signal.
Feedforward A method that "precompensates" a control loop for known errors due to motor, drive, or load characteristics to improve response. It depends only on the command, not the measured error.
FieldBus A process control local area network used for interconnecting sensors, actuators, and control devices to one another, as defined by ISA standard S50.02.
Flag Register Register set in case of interrupt
Flying restart Flying restart The ability of a drive to restart a spinning motor. This is normally done by sampling the motor speed, encoder input, or back EMF to restart the motor from the speed at which it is coasting.
Flying virtual master The ability of a drive to restart a spinning motor. This is normally done by sampling the motor speed, encoder input, or back EMF to restart the motor from the speed at which it is coasting.
G code A software used for programming machining processes. Typical applications include 3-axis milling and 2-axis wire cutting.
Gantry An overhead framework that is designed to travel linearly in the X, Y, and/or Z axes. Tooling or other devices are generally designed into the framework to perform various functions as it moves from one location to another.
generator Mathematical model that provides a square wave, triangular wave or sinusoidal wave output.
Hall effect sensors Feedback device (HED) used in a brushless servo motor system to provide information for the amplifier to electronically commutate the motor.
Hard, real-time control Refers to the ability of a controller to respond to an event immediately, without delay. While PLCs are inherently designed for this, PCs can be trickier. To be a hard, real-time controller, a PC-based controller's software must be considered the highest priority task, and made independent of the rest of the PCs task.
Hardware limit switch A switch that is operated by some part or motion of a power-driven machine or equipment to alter the electric circuit associated with the machine or equipment.
Holding brake A positive-action mechanical friction device. Normal configuration is such that when the power is removed, the brake is set.
Home position A reference position for all absolute positioning movements. Usually defined by a home limit switch and/or encoder marker. Normally set at power-up and retained as long as control system is operational.
Homing Locating a unique reference position at power-up for axis calibration.
Host The host is generally a master computer used to direct the flow of information in and out of the motion controller.
Host control Device attached to a network to interface servo motor motion control systems with a machine or factory automation system
Hysteresis The difference in response of a system to an increasing or a decreasing input signal.
In Position Window The range of position increments in which the axis is considered by the controller to be at the commanded position point. Can be thought of in erms of +/- N position increments from the commanded position.
Inching A means of accomplishing momentary motor movement by repetitive closure of a circuit using a single pushbutton or contact element.
Indexer An electronic unit that converts high-level commands from a host computer, PLC, or operator panel into step and direction pulses needed by a stepping motor driver.
Indexing An axis or axes in the process of moving to a pre-programmed position, at a defined velocity and acceleration/deceleration rate.
Inertia Property of a mass that causes it to resist any change in its direction of motion or speed. In a servo system, the inertia of the mass being moved is reflected back to the servo motor shaft. This is called €œreflected inertia." The servo system must be able to control this reflected inertia throughout the entire motion profile.
Interface The interface is the device used to convert or isolate one power source from another, while making sure the signaled information passes on to the next device.
Interpolation A coordinated move of two or more axes in a linear and/or circular motion.
Inverter A drive that converts an AC, 60 Hz, power source to DC, then back to a variable frequency AC power source for a 3 phase induction motor.
IPC Industrial Personal Computer
Jerk limitation Limits the rate of acceleration change during the movement of an axis. Its purpose is to eliminate mechanical jerking when speed changes are made.
Jitter free synchronization In a master/slave configuration, it refers to the slave drive matching the speed of the master at an acceleration/deceleration rate that provides to a smooth transition.
Jog An axis running at a fixed velocity and acceleration/deceleration rate, in a selected direction, with no specific destination.
Length Units The linear units for programming and configuring an axis, typically used in indexing, setting offsets, defining overtravel limits, etc. Length units are often defined in inches, feet, meters, or millimeters.
Linear A relationship between an input and output in which the output varies in direct proportion to the input.
Linear acceleration Time rate of change of linear velocity
Loop Update Times The time interval between updates to calculate the process variable from the following error.
Maximum continuous current The maximum root mean square (rms) current which can be continuously applied to a motor operating at low speed under specified conditions without exceeding the motor's rated temperature
Maximum Continuous torque The maximum continous output torque which the motor can develop when operating at low speed under specified conditions without exceeding the motor's rated temperature
MIPS Million Instructions Per Second ? a measure of a processors execution speed
Modulo Value In a rotary axis, the position increment at which the axis position returns to 0, i.e. 360 degrees.
Motion Chip (CAMC Series) Independently developed motion control chip with our ASIC technology
Motion Control Motion control is a sub-field of automation, in which the position and/or velocity of machines are controlled using some type of device such as a hydraulic pump, linear actuator, or an electric motor, generally a servo.
Motion Control System All rotational and linear electric servo and stepping motors and theirfeedback devices and controls intended for use in a system that provides precise positioning, speed control, torque control, or in any combination thereof
Motion profile A method of describing a process in terms of velocity, time, and position
Noise An unwanted electrical signal. Typically from Radio Frequency Interference (RFI) or Electromagnetic Interference (EMI) induced onto the drive's components, speed reference or feedback wiring, and can cause the axis to react unexpectedly. Sources of noise are AC power lines, motors, generators, transformers, fluorescent lights, CRT displays, and radio transmitters.
NPN 출력 An output form that connects the emitter directly to the 0V terminal using the NPN transistor in the output circuit and opens the +V and the Collector for the use of the Collector as the output terminal.
Offset A preset distance between the actual zero reference point and a programmed zero reference point.
Open architecture Hardware and/or software designed in a way to provide interchangeability of components and connectivity from multiple vendors.
Open loop /close loop Open loop control refers to a motion control system with no external sensors to provide position or velocity correction signals. A closed loop control is a motion control system that has position and velocity feedback to generate a correction signal by comparing its position and velocity to desired parameters. Feedback devices are typically encoders, resolvers, LVTDs and/or tachometers.
Open Loop Positioning A positioning technique, utilizing step motors, in which the controller sends a sequence of commands to the step motor without absolute means of detecting whether the move was made. When the load and move velocity and acceleration are defined, open loop positioning of the motor is capable of extended operation without losing steps.
Operator Interface The operator interface is the means by which the user can enter new instructions or information that the system needs. Also, it can be defined as the means to retriece feedback, data, fault information, program retrieval, etc. from the system.
Option Cable A cable used to connect the terminal to the controller purchased from us. (ex : C6868-3TS, C6836-3TS)
Over temperature A warning or alarm generated by a motor or drive that indicates the device is too hot. This is generally caused by the demand for too much current through the device. There may be binding at the motor, calling for more torque, or the motor or drive may be undersized.
Overcurrent Any current in excess of the rated current of the drive to maintain or move to a new position at a given velocity and acceleration or deceleration rate.
Override To force an axis to move during a faulted condition. Often required to get an axis to move off of an overtravel limit switch.
Overshoot A system response where the output or result exceeds the desired value.
Peak Current Maximum intermittent current that does not cause motor damage or irreversible degradation of motor performance
Peak torque Maximum torque developed by a motor under specified conditions when the maximum allowable peak current is applied for a motor control application
Phasing Adjusting the position of one axis with respect to others during synchornization or electronic line shafting. This is usually done while the axis are moving, and done to correct for small registration problems.
PID Proportional, integral, derivative. A three mode motion control action where the controller has time proportioning, integral (auto reset) and derivative rate action.
PLC Programmable Logic Controller is a type of computer that provides hard, real-time control of packaging and other equipment thanks to fast, repeatable deterministic scan times.
PLD Programmable Logic Device
PLS A Programmable Limit Switch is a dedicated, high-speed control that converts the rotary motion of a shaft into digital signals. PLS's are typically used to increase the accuracy of material or product positioning or registration.
Point-to-point wiring A method of wiring each component on a packaging machine directly to the PLC. Hard-wiring eliminates the potential for communication delays found on a network.
Position error Error caused when the difference between the actual position, and the command position is greater than a set amount.
Position loop Portion of the command signals that generates the position information based on position feedback.
Position loop Gain Determines how much positioning error, or following error, will be allowed by the servo system during a move.
Positioning Specifying a move by giving a target position, a velocity and an acceleration. The target position can be an absolute position, or a relative position from the current position.
Power amplifier Device that enables an input signal to control the flow of necessary power from the power source to the servo motor for the purpose of performing desired motion
Profile Graphical representation of movement in a motion control application. This can be position vs. time, velocity vs. time or torque vs. time.
Profile Generator A Profile Generator is responsible for performing all the calculations required for the motion trajectory given information about the mode of operation (velocity, gearing, incremental indexing, or absolute positioning).
Programming language Interface that allows the user to control the motion system according to he demands of the user.
Protocol A particular method of encoding either analog or digital information for transmission over a cable. Often used interchangeably with Standard in motion control appications.
Pulse Rate The frequency of the step pulses applied to a motor driver. The pulse rate multiplied by the resolution of the motor/ drive combination (in steps per revolution) yields the rotational speed in revolutions per second.
Pulse width frequency The rate at which the IGBTs can switch.
Pulse-width modulation A switch-mode control method used in amplifiers and drivers to control motor voltage and current to obtain higher efficiency than linear control. PWM refers to variable on/off times (or width) of the voltage pulses applied to the transistors.
Quadrature A technique that separates signal channels by 90' (electrical) in feedback devices. It is used with encoders and resolvers to detect direction of motion.
Quasi-S자 구동 A form of S-shaped speed profile created using a straight acceleration drive to implement S-shape driving in the CAMC-5M.
Radio frequency interference (RFI) Ramp function Radio frequency, generally considered to be between 10 KHz and 10 GHz, disturbance that manifests itself in performance degradation, malfunction, or failure of electronic equipment
Rated current Current developed at rated voltage and rated speed without exceeding the temperature rating
Rated speed The maximum speed at which the servo motor can rotate.
Rated torque Torque developed at rated voltage and rated speed without exceeding the temperature rating
Real master Physical feedback which provides position information for a synchronized axis to follow.
Rectifier Device that transforms AC power into DC for use by converter drives.
Referencing Procedure to set the feedback device relative to the real world.
Regen Power generated by a motor/drive system during the deceleration phase of movement. In some systems, this regen power can be used by other axis or put back on the network.
Regeneration The action during motor braking, in which the motor acts as a generator and takes kinetic energy from the load, converts it to electrical energy, and returns it to the amplifier.
Resolver A position transducer that uses magnetic coupling to measure absolute shaft position during one revolution.
Rollfeed Function that calculates speed of a rotary axis to keep the linear speed of the feed material constant as the diameter of the rotary axis changes.
Rotary Moving in a circular way, using degrees to indicate position instead of mm, or inches in a linear axis
S curve S curve refers to a control pattern that accelerates and decelerates a motor slowly to reduce mechanical shock. This function is more sophisticated than linear acceleration, but does not have the performance of camming.
Safe off Procedure that ensures that power will not travel from the drive to the motor. SCADA-Supervisory Control & Data Acquisition. Refers to software and hardware that (1) permits the control or management of an entire packaging line and (2) automatically collects data on that line's efficiency.
Sampling Time Time to extract the value of the input signal from the pulse at any time.
Sensor positioning I, II, III 구동 3 different drive methods based on specific sensor signal(Mark) detection drive the number of user specified pulses(Refer to the chip manual for details)
Sequence of operation A series of steps to be executed that then causes an action in a machine.
SERCOS Serial Real-time Communications Standard. An open communications protocol (adopted as IEC 1491) designed especially for motion-control networks. Defines a method for transmitting digital information over a fiber-optic cable at speeds of 2, and more recently, 4 megabits/sec.
Serial communications Transmitting digital 1s and 0s in a series over a single cable, the primary method of communication used in and between packaging equipment. Parallel communications use several wires to simultaneously transmit groups of 1s and 0s.
Servo mechanism An automatic, closed-loop motion control system that uses feedback to control a desired output such as position, velocity, or acceleration.
Servo motor A motor that together with its resolver or encoder is capable of being precisely controlled. A resolver or encoder provides constant and highly accurate feedback on the motor's exact position, speed and torque to the drive that powers it.
Settling time The time required for a parameter to stop oscillating or ringing and reach its final value.
SinCos An encoder that outputs both digital and high resolution analog signals used in servo control in packaging machines.
Sink The output goes into the GND state and receives power from outside.(concept contrary to source).
Software limit switch A software function that turns physical outputs on and off, depending on switch the level of a specified input. Servomotors, resolvers or encoders usually offer the input for software limit switches.
SSI Acronym for Serial Synchronous Interface. This is a type of multi-turn absolute encoder. The position information is sent from the encoder to the device reading the encoder as a serial string in Gray code format.
Static Torque The maximum torque of a motor available at zero speed.
Stepping motor Polyphase synchronous motor, the rotor of which rotates in descrete angular increments when the stator windings are energized in a programmed manner either by appropriately timed direct current states or by polyphase alternating current
Synchronization The condition that occurs when several functions of a machine (mechanical, servo or software) follow a common control signal and are in a specific position according to this signal.
Tachometer An electromagnetic feedback transducer providing an analog voltage signal proportional to rotational speed.
Task A software system control that determines the execution rates and priority levels for software modules running in a motion control or PLC.
TCP/IP Transmission Control Protocol/Internet Protocol. A method of encoding data into a series of "packets" for transmission over a network. Designed initially for use on the Internet, TCP/IP is rapidly penetrating non-Internet uses, including the factory floor.
Teach position The position of an axis that is "taught" into the motion control program. The axis is moved, typically by jogging, to the desired position. This "teach position" is then entered into the motion program automatically by the control (using whatever steps are required by the motion control manufacturer) and becomes the new programmed position. The motion control used must have the ability to do this type of program manipulation.
Telegram Communication data packet between controller and device.
TeleService The ability to remotely access a motion control or PLC for service purposes.
Torque Rotary equivalent to force. Equal to the product of the force perpendicular to the radius of motion and distance from the center of rotation to the point where the force is applied.
Torque limitation A servo function that allows the monitoring and limiting of the current supplied to a servo motor.
Torque, continuous Torque needed to drive a motor load over a continuous time.
Torque, peak Maximum amount of torque a motor can deliver when the highest allowable peak currents are applied.
Torque, rms Root Mean Square (rms) is a mathematical method to determine a steadfast or average torque for a motor.
Torque, stall The maximum torque without burning out the motor.
Tuning Adjusting the servo drive's internal characteristics to give it the ability to control the reflected inertia and gives the axis a smooth position/velocityprofile.
Twisted pair Lines that have the characteristics of eliminating noise components in the Nomal mode by offsetting the electromotive force generated by the track.
UART Universal Asynchronous Receiver Transmitter. A communication chip that provides computers with an RS-232C DTE interface, enabling them to communicate or exchange data with modems or other serial devices.
Velocity The speed at which a motor or mechanical system runs.
Velocity loop A servo control function that sums a velocity command signal with a speed feedback signal from a servo motor, and outputs the difference as a torque command signal.
Velocity Loop Proportional Gain Determines how much velocity error will be allowed by the servo system during a move. See also: Tuning
Virtual master An encoder signal created in the software of a motion control to allow synchronizing multiple servo systems. A typical machine may have several virtual master encoders.
Voltage Constant KE = The back EMF generated by a DC motor at a defined speed. Usually quoted in volts per 1000 rpm.
Zero point of feedback The point at which a servomotor's encoder position and the machines physical position line up. If these two points don't agree, the servo axis must be "homed."
갠트리 구동 (Gantry Drive) A form in which the two axes are driven by an instrument.
단자대 Repeater to connect servo driver and controller and to connect other external devices such as digital or analog input/output
동기제어 (Synchronous Control) Meaning Real-time control, A technique of controlling both actual time and control time.
로직 그라운드(LGND) Combine logic between our motion controller and servo driver to zero point of signal.
로타리 인코더 (Rotary Encoder) A device that converts the angle of rotation of the motor shaft into an electrical signal(pulse).
베이스 보드(Base board) Bxxx series to combine modules to create the desired form of control boards
보간구동 (Interpolation Drive) A drive that uses two or more axes to move through the shortest path to a particular position.
분해능(Resolution) Ability to accurately represent analog data, For our AIO Module with 12 bits of resolution, analog data can be expressed in 212 (4096) steps.
상승에지,하강에지(Rising Edge,Falling Edge) The moment when a level changes in a digital signal, especially a square wave, the moment when the level rises is Rising Edge, the moment when the level falls is Falling Edge.
서지 전압(Surge Voltage) an overvoltage far exceeding the internal voltage set by a manufacturer of a device, machine, appliance, or material. When overvoltage enters the device, it damages connected devices, components, etc. or prevents operation.
슈미트-트리거 (Schmitt-trigger) A circuit with a function to shape a waveform to determine the high and low levels in Logic.
스크립트/캡션 (Script/Caption) 기능 CAMC-FS, features supported on CAMC-IP chips. This refers to the function that automatically executes during a function run by reserving 13 commands.
스플라인 보간 (SPLine Interpolation) Ability to connect target positions to create smooth curves.
슬레이브 구동(Slave Drive) Ability to connect target positions to create a smooth curve The two axes consisting of Master and Slave are driven in sync.
엑츄에이터(Actuator) To generate a physical quantity(flow rate, drive current, electric energy, etc) using the output or electrical signal of a microcomputer.
오버라이드(Override) Reverting the set target position or speed value during drive to form a drive profile with a new value.
원호 보간 (ARC Interpolation) Insert arcs at the corner points where straight lines meet, such as Dispensing, Processing and Painting, to continuously control straight, arc and straight interpolation.
인트럽트(Interrupt) Stop the task that was in progress, perform the important (urgent) task first, and then continue the task that was in progress.
채터링(Chattering) A phenomenon in which contacts are actually stuck and dropped in a very short time by other environments, such as mechanical vibration, when the contacts are attached or dropped by a mechanical switch element.
트리거(Trigger) The mechanical switch is maintained only when the contacts are still attached to maintain the ON position. However, if a semiconductor is used, it will remain on even if the contacts fall off once. In this case, it is a signal that is switched ON only once, and in motion it is used to synchronize itself with the external device when the rising and falling edges of the signal occur.
파워 TR출력 방식 To amplify current by applying transister to the output of the basic photo coupler.
포토-커플러 (Photo-coupler) Switching element for inducing electrical isolation by converting electrical signals into light.
풀업 저항 (Pull-up Resistance) Resistance to recognize OPEN as high level if output is as GND,OPEN or HIGH,OPEN that is not recognized by the CPU in a 0 or 1 degree state.
5V Level Tolerant Range that separates signal level