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.
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 | |
| Analog | Analog interface ± 10 V (12 bits, 5kHz) | |
| 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 | 153 x 78 x 35 | mm |
