A versatile standalone packaged controller unit with inbuilt functions to operate Piezo LEGS® motors in closed loop (target mode) or open loop with sub-nanometer resolution. Multiple units can be easily chained to form multi-axis systems with host communication over serial RS485. An external motion controller may control the speed via SPI or analog interface.

Specifications
TypeValueNote
Number of axes1
Multi-axis supportYesUnits can be RS485-chained for multi-axis
True speed controlNoOnly stepping rate controlled
Resolution8192 microstepsEach full step of about 5 μm is divided into 8192 steps
Maximum stepping rate (Full step frequency – Hz)2500Depends on motor
Supported encodersQuadratureABZ differential, 20 MHz counting
SSI8–30 bits, 750 or 130 kbps
BiSS18/26/32 bits, 750 kbps
AnalogAnalog ±10 V (12 bits)
Host communicationTwo-wire RS485Commands are sent in ASCII format, 115.2 kbps (n81)
USB (virtual COM port)

Servo interface

SPI16 bits (signed), max 20 Mbps
AnalogAnalog interface ±10 V (12 bits, 5 kHz)
General I/O4 inDepending on encoder type and use of limit switches
2 out
Stacking connectorN/A
Motor connector5-pole, JST SM05B-SRSS-TBTwo connectors, parallel connection
Encoder/servo connector15-pin HD female D-subInput for sensors or motion controller
Limit switchYesInput for external limit switches
Communication connector3.5 mm audio jack x 2RS485, daisy chain
USB mini type BInput for USB virtual COM port
Power connector2-pole header, 2.54 mm, Molex 70543-0001Input for USB virtual COM port
Power supply48 V DC, 20 W48 V DC ±5%
Dimensions123 x 78 x 35mm

Parameter Name	Parameter Value
Number of axes	multi-axis
Motor type	DC for piezoelectric units
Other characteristics	rugged
Product applications	industrial