ESCON Overview
The ESCON servo controllers are small-sized, powerful 4-quadrant PWM servo controller for the highly efficient control of permanent magnet-activated DC motors.
The featured operating modes – speed control (closed loop), speed control (open loop), and current control – meet the highest require- ments. The ESCON servo controllers are de- signed being commanded by an analog set
value and features extensive analog and digital I/O functionality and are being configured via USB interface using the graphical user interface “ESCON Studio”.
ESCON Module 24/2 466023
ESCON 36/2 DC 403112
ESCON 36/3 EC 414533
ESCON Module 50/4 EC-S 446925
ESCON 50/5 409510
ESCON Module 50/8 HE 532872 586137
ESCON 70/10 422969
ESCON Module 50/5 438725
Speed measurement by − Digital incremental encoder: The encoders deliver simple square signals for further pro- cessing. Their impulses are counted to deter- mine the speed. Channels A and B are phase- shifted signals, which are being compared to determine the direction of rotation. − DC tacho: The DC tacho delivers a speed- proportional analog voltage. − Available Hall sensors: The Hall sensors deli- ver six different combinations of switching im- pulses per electrical turn which are counted to determine speed. They also deliver phase- shifted signals that are being compared to determine the direction of rotation. − Sensorless EC: The speed is determined by the progression of the induced voltage. The electronics evaluates the zero crossing of the induced voltage (EMF). To the numerous inputs and outputs, various functionalities can be assigned to.
Set value (speed or current), current limitation, as well as offset can be assigned as follows. − Analog value: The value is defined by an ana- log voltage set via external or internal poten- tiometer. − PWM value: The value is defined by fixed fre- quency and amplitude. The desired change is achieved by variation of the duty cycle of 10…90%. − RC Servo Value: The value is set with a signal pulse with a duration of 1.0…2.0 ms. − Fixed value: The value is defined by a fixed preset value. − 2 fixed values: Value 1 is defined by a fixed preset value 1. Value 2 is defined by a fixed preset value 2. A digital input is used to switch between the two preset values. Various functionalities are available to enable the power stage. − Enable: Enables or disables the power stage. − Enable & Direction: Enables or disables the power stage and determines the motor shaft’s direction of rotation.
Software Installation Program: ESCON Setup Graphical User Interface: ESCON Studio Startup Wizard Regulation Tuning Diagnostic Firmware Update Controller Monitor Parameters Data Recording Online Help Language: German, English, French, Italian, Spanish, Japanese, Chinese Operating System: Windows 10, Windows 8, Windows 7, Windows XP SP3 Communication interface: USB 2.0/3.0 (full speed) Depending on the ESCON variant, the following motor types can be operated − DC motor: Permanent-magnet DC motor − EC motor: Brushless, electronically commu- tated permanent-magnet DC motor (BLDC) with and without Hall sensors. Various operating modes allow an adaptable use in a wide range of drive systems − Current controller: The current controller compares the actual motor current (torque) with the applied set value. In case of deviation, the motor current is dynamically readjusted. − Speed controller (closed loop): The closed loop speed controller compares the actual speed signal with the applied set value. In case of deviation, the speed is dynamically readjusted. − Speed controller (open loop): The open loop speed controller feeds the motor with a vol- tage proportional to the applied speed set value. Changes in load are compensated using the IxR methodology.
Easy startup Startup and parameterization are performed using the intuitive graphical user interface “ESCON Studio” with the help of simple to use, menu-guided wizards. The following wizards are available: Startup, Regulation Tuning, Firmware Update, Controller Monitor, Parameters, Data Recording, and Diagnostics. Protective equipment The servo controller has protective circuits against overcurrent, excess temperature, under- and overvoltage, against voltage transients, and against short-circuits in the motor cable. Further- more it is equipped with protected digital inputs and outputs and an adjustable current limitation for protecting the motor and the load. The motor current and the actual speed of the motor shaft can be monitored by means of the analog output voltage. Comprehensive documentation Using the “Feature Comparison Chart”, the suitable ESCON servo controller can easily be de- termined. The “Hardware Reference” comprises the specifications of the hardware in detail. The documents “Firmware Version” and “Release Notes” describe changes and improvements of firmware and software. In addition, the graphical user interface “ESCON Studio” features a comprehensive online help.
548 maxon motor control
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