Datasheet

414
maxon motor control
ESCON Module 50/5
438725
ESCON 50/5
409510
ESCON 70/10
422969
ESCON Module 24/2
466023
ESCON 36/2 DC
403112
ESCON 36/3 EC
414533
ESCON Module 50/4 EC-S
446925
ESCON
maxon motor control April 2016 edition / subject to change
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 requirements.
The ESCON servo controllers are designed
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” for Windows PCs.
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 control-
ler 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
voltage proportional to the applied speed set
value. Changes in load are compensated us-
ing the IxR methodology.
Speed measurement by
− Digital incremental encoder: The encod-
ers deliver simple square signals for further
processing. Their impulses are counted to
determine the speed. Channels A and B are
phase-shifted signals, which are being com-
pared to determine the direction of rotation.
− DC tacho: The DC tacho delivers a speed-
proportional analog voltage.
− Available Hall sensors: The Hall sensors
deliver six different combinations of switching
impulses 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
analog voltage set via external or internal
potentiometer.
− PWM value: The value is defined by fixed
frequency 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.
− Enable CW: Enables or disables the power
stage in direction of rotation-dependent sense.
The rotor can only turn clockwise (CW).
− Enable CCW: Enables or disables the power
stage in direction of rotation-dependent sense.
The rotor can only turn counterclockwise (CCW).
− Enable CW & CCW: Enables or disables the
power stage in direction of rotation-depen-
dent sense. The rotor can only turn in defined
direction. The signals are interlocked against
each other.
The ramp function permits controlled accelera-
tion/deceleration of the motor shaft in both, open
loop and closed loop speed controller mode.
− Analog ramp: The ramp is defined by a
variable analog value.
− Fixed ramp: The ramp is defined by a fixed
preset value.
Stop: The motor shaft decelerates with preset
speed ramp until complete standstill.
Ready: The Ready signal can be used to trans-
mit the operational status (respectively fault) to a
superior control.
Speed and Current Comparator: The digital
output is set depending on the actual value.
− Limit: The digital output is set as soon as the
preset value is reached. It remains set as long
as the value is exceeded.
ESCON Studio (Controller Monitor)
1611_Motor_control.indd 414 21.04.16 08:55