eCL Series Closed Loop Stepper System
Closed Loop Stepper Systems - E Series
The new eCL series introduces simple and precise closed loop control to Parkers microstepping product platform. The eCL system maintains the inherent advantages of stepper control while eliminating common disadvantages through the addition of an innovative closed loop control algorithm for optimum performance
- Available in two driver form factors (4A) and (2A)
- 24VDC input
- Small, precise, high torque stepper motors with connectors
- EtherCAT and Step/Direction drive options
- All motors include encoders (Nema8, 11, 17, 23)
- Selectable resolution up to 50,000 steps/rev.
- Closed loop performance without tuning
e-Series Closed Loop Steppers
2
Closed Loop System
The eCL system is an innovative closed loop stepper motor and controller that utilizes motor mounted
feedback to constantly monitor shaft position. Actual motor shaft position data is updated every 25
microseconds allowing the drive to compensate for sudden load changes ensuring accurate position
control.
• In-position output signals controller that move is complete
• Prevents stalls thru position monitoring
• Alarm signal to controller if overload results in motor stalling
• Reduced motor heating and energy usage
Better Performance
Synchronization errors and
motor stalling that plague
traditional stepper systems are
eliminated with the eCL’s closed
loop control algorithm allowing
for higher torque and speed
performance.
The eCL also incorporates a
“Peak Torque Boost” feature that
increases available torque for
starting and stopping by as much
as 50%.
Complete stop Hunting
Speed
Torque
Conventional Stepping
e-series Closed Loop
No Tuning, no hunting
Unlike traditional closed loop servo systems, the
eCL system requires no tuning. Gains have been
optimized for the motor/drive combination to
insure smooth and stable motion.
Once the eCL motor reaches its target position,
the rotor locks into place at a perfect standstill.
Traditional servo motors typically hunt between
encoder pulses at standstill which could
adversely affect applications requiring zero
vibration.
Drive Specifications
Part Number eCLD-2DC-SD eCLD-4DC-SD
Ouput Current, amps 2 4
Drive Input Voltage 24VDC +/-10%
Current Consumption 500mA (excluding motor current)
Control Method Closed Loop Control
Command
Signal
Type
Step & Direction (1-pulse) or CW/CCW (2-Pulse)
Selectable via DIP switch
5V TTL or 12-24V open collector
Input Rate 500kHz maximum
Rotational Direction CW/CCW (Selectable via DIP switch)
Resolution
16 Selectable choices : 500, 1000, 1600, 2000, 3200,
3600, 4000, 5000, 6400, 8000, 10000, 20000, 25000,
36000, 40000, 50000 (Selectable via DIP switches)
I/O
Inputs Enable, Alarm reset
5-24VDC opto-isolated
Outputs In-position, Alarm
5-24VDC opto-isolated
Protective Functions
Overcurrent, Over speed, Position Tracking Error,
Over Load, Over Temperature, Over Voltage, Motor
Connection Error, Encoder Connection Error, Motor
Voltage Error, In-Position Error, ROM Error, Position
Overflow Error
LED Display Power status, In-Position status, Enable status, Alarm
status
Environmental 0 - 50 ºC ( 32 - 122 ºF )
35 -85% non-condensing
Standards CE (EMC)
RoHS
e-Series Closed Lo