Controlling the motor

The PMD301 controller is primarily intended for use with our concept range of piezo motors from 40N and up, or when high speed is required.

Acuvi Piezo Motor PMD301 controller

Closed or open loop control with sub-nanometer resolution

  • 8192 microsteps
  • Multi-axis control
  • Stackable
  • Easily integrated

Piezo LEGS® Controller PMD301

The PMD301 controller is primarily intended for use with our concept range of piezo motors from 40N and up, or when high speed is required.

The PMD301 is a 1-axis controller for use with Piezo LEGS® motors from PiezoMotor. Units can be chained to form multi-axis systems. It provides sub-nanometer resolution and speed in the mm/s range. PMD301 is the ideal choice for system designs where one or several Piezo LEGS® motors are used. Host communication is either via a 2-wire RS485 or USB virtual COM port through ASCII commands. A 15-pole D-Sub port can be configured for general I/O, sensor input or as a motion controller interface. An external motion controller may control the speed via SPI or analog voltage interface.

Specifications PMD301

Type

Value

Note

Number of axes

1

 

Multi axes support

Yes

Units can be RS485-chained for multi-axis

True speed control

No

Only stepping rate controlled

Resolution

8192 microsteps

Each full step of about 5 µm is divided into 8192 steps

Maximum stepping rate
(Full step frequency – Hz)

2500

Depends on motor

Supported encoders


 

Quadrature

ABZ, 20 MHz counting

SSI

SSI 8–30 bits, 330 or 130 kbps

BiSS

18/26/32 bits, 330 kbps

 

 

Host communication

Two-wire RS485

Commands are sent in ASCII format, 115.2 kbps (n81)

Servo interface

SPI

16 bits (signed), max 15 Mbps

General I/O

4 in

Depending on encoder type and use of limit switches

2out

Stacking connector

N/A

 

Motor connector

5-pole, JST SM05B-SRSS-TB

Two connectors, parallel connection

Encoder/servo connector

15-pin HD female D-sub

Input for sensors or SPI servo interface

Limit switch

Yes

Input for external limit switches

Communication connector 

3.5 mm audio jack x 2

 RS485, daisy chain

USB mini type B

Input for USB virtual COM port

Power connector

2-pole header, 2.54 mm, Molex 70543-0001

input for 48 V supply

Power supply

48 V DC, 20 W

48 V DC ±5%

Dimensions

123 x 78 x 35

mm

Dimensions of the PMD301

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