THORLABS PD2 Manuale utente

PD2(/M)

Piezo Inertia Drive Stage

User Guide

PD2(/M) Piezo Inertia Drive Stage 
 
Table of Contents 
Chapter 1 Safety.........................................................................................................................1 
Chapter 2 Overview....................................................................................................................3 
Chapter 3 Installation .................................................................................................................6 
3.1.1 General................................................................................................................................................................ 6 
3.1.2 Setting Up an XY & XYZ Stage Configuration....................................................................................................... 9 
3.1.3 Mounting Components to the Stage................................................................................................................. 14 
3.2.1 General.............................................................................................................................................................. 17 
3.2.2 Using PDXC Controller....................................................................................................................................... 17 
3.2.3 Using KIM001 or KIM101 Controllers................................................................................................................ 18 
Chapter 4 Operation.................................................................................................................19 
Chapter 5 Specifications ...........................................................................................................21 
Chapter 6 Frequently Asked Questions .....................................................................................22 
Chapter 7 Mechanical Drawings................................................................................................23 
Chapter 8 Regulatory................................................................................................................25 
Chapter 9 Declaration of Conformity.........................................................................................26 
Chapter 10 Thorlabs Worldwide Contacts ...................................................................................27 

PD2(/M) Piezo Inertia Drive Stage Chapter 1: Safety

Rev A, August 4, 2022 Page 1

Chapter 1 Safety

Safety Information

For the continuing safety of the operators of this equipment, and the protection of the equipment itself, the

operator should take note of the Warnings, Cautions and Notes throughout this manual and, where visible, on

the product itself.

The following safety symbols may be used throughout the manual and on the equipment itself.

Shock Warning

A shock warning is given when there is a risk of injury from electrical shock.

Warning

A warning is given when there is danger of injury to users.

Caution

A caution is given when there is a possibility of damage to the product.

Caution: Hot Surface

The housing of the stage can get very hot during operation. Avoid touching it directly.

Note

This is a clarification of an instruction or additional information.

PD2(/M) Piezo Inertia Drive Stage Chapter 1: Safety

Page 2 CTN018562-D02

General Warnings

Warning

If this equipment is used in a manner not specified by the manufacturer, the protection

provided by the equipment may be impaired. In particular, excessive moisture and/or dust may

impair operation.

Spillage of fluid, such as sample solutions, should be avoided. If spillage does occur, clean up

immediately using absorbent tissue. Do not allow spilled fluid to enter the internal mechanism.

The equipment is for indoor use only.

The equipment is not designed for use in an explosive atmosphere.

When running custom move sequences, or under fault conditions, the stage may move

unexpectedly. Operators should take care when working inside the moving envelope of the

stage.

General Cautions

Caution

Dust and debris can reduce the lifetime of the stage. If left running unattended for extended

periods of time, the application should be covered where possible.

If the clamping force onto the moving platform is too high, this can cause reduced stepping

performance and possible stalling of the stage.

The stage’s screws are well adjusted and fixed. Loosening or removing any screws will change the

performance and invalidate the warranty, except where instructed to do so in this manual.

General Notes

Note

The slip-stick function of the mechanism uses a very short pulse width.

The step size is defined as the distance moved in one step or pulse. This distance can be increased by up

to about 30% by changing the piezo drive voltage. The actual step size achieved for a given drive voltage

will be dependent on the application. Due to the open loop design, piezo hysteresis, component variance,

and application conditions, the achieved step size of the system may vary by over 20% and is not

normally repeatable.

PD2(/M) Piezo Inertia Drive Stage Chapter 2: Overview

Rev A, August 4, 2022 Page 3

Chapter 2 Overview

Introduction

The PD2(/M) is a miniature stage with an ultra-compact footprint, ideal for motion control applications with

limited space. It features a piezo inertia motor that uses friction and inertia to translate the platform in discrete

cycles. Each cycle consists of a relatively slow piezo expansion step accompanied by a rapid piezo contraction

step. During the expansion step, the moving platform moves in the same direction as the piezo element due to

friction, while the rapid piezo contraction causes the moving platform to slip and remain immobile due to

inertia. Continuous motion is achieved through repetition (“continuous stepping”) of this cycle and reverse

travel is achieved by performing the cycle in reverse.

The PD2(/M) stage has a 5 mm travel range with open-loop operation. When driven by the PDXC Inertial Piezo

Controller, the PD2(/M) stage offers continuous long term stepping as well as periodic position and hold mode

with 1.5 N clamping/holding force. The stage can achieve a typical step size of 0.5 µm using different rise and fall

voltage rates that depend on the load.

Figure 1 Stage Features

Included Components

The PD2(/M) stage is delivered with the following components:

•Quick Start Card

•00-90 (M1.2 x 0.25) Slotted Pan Head Screws, 2mm Long, 6 Pieces

•Ø1 mm Dowel Pin, 3 mm Long, 6 Pieces

Moving Platform

Stage Base

Drive Cable

PD2(/M) Piezo Inertia Drive Stage Chapter 2: Overview

Page 4 CTN018562-D02

Pin Diagram

Figure 2 and Table 1 show the pin assignment and the signal definition of the female 15-pin D-Sub connector.

Figure 2 Female 15-Pin D-Sub Port Pin Assignment

Pin No.

Voltage

Name

Description

0 V

GND

Digital Ground

0 V

PGND

Power Ground

125 V Max

SigOut1

Piezo Output 1

5 V TTL

EEPROM

1-Wire EEPROM

1,2,4-11,15

Reserved

Table 1 Female 15-Pin D-Sub Signal Definition

Unpacking

Note

Unpack the stage with care. Check the contents for signs of damage. If there is any sign of damage or

missing parts, contact Thorlabs immediately.

PD2(/M) Piezo Inertia Drive Stage Chapter 2: Overview

Rev A, August 4, 2022 Page 5

Accessories

The PD2T(/M) adapter plate features a central 8-32 (M4 x 0.7) threaded hole in the bottom surface, which

makes it convenient to connect to an optical post with an 8-32 (M4 x 0.7) setscrew. The bottom surface also has

six #00 (M1.2) counterbores for connecting a PD2(/M) stage on its top surface. There are also two 00-90 (M1.2 x

0.25) threaded through holes on the top and bottom surfaces for connection to a PD2(/M) stage. Two additional

00-90 (M1.2 x 0.25) mounting holes on the side of the plate can be used with a custom assembly to create a

“lock plate” that connects to a screw threaded into the 00-90 (M1.2 x 0.25) mounting hole in the side of the

PD2(/M) stage.

The PD2U(/M) adapter plate features a central #8 (M4) counterbore in the top surface, making it convenient for

a breadboard connection. The bottom surface features six #00 (M1.2) counterbores for connecting the PD2(/M)

stage. There are also two 00-90 (M1.2 x 0.25) threaded through holes on the top and bottom surfaces for

connection to a PD2(/M) stage. Two additional 00-90 (M1.2 x 0.25) mounting holes on the side of the plate can

be used with a custom assembly to create a “lock plate” that connects to a screw threaded into the 00-90 (M1.2

x 0.25) mounting hole in the side of the PD2(/M) stage.

The PD2Z(/M) right-angle bracket allows the PD2(/M) stage to be mounted vertically.

The PD2AD D-Sub to SMC adapter cable allows the stage to be driven by a KIM001 or KIM101 controller with an

SMC connection. Details are provided in 3.2.3.

Caution

Do not mount an imperial accessory to a metric stage or a metric accessory to an imperial stage.

PD2(/M) Piezo Inertia Drive Stage Chapter 3: Installation

Page 6 CTN018562-D02

Chapter 3 Installation

Mounting

3.1.1 General

Mount the PD2(/M) stage on an even surface. The recommended flatness of the mounting surface is ≤5 μm.

For applications with large temperature changes, only mount the PD2(/M) stage on a surface that has the same

or similar thermal expansion properties as the stage.

The mounting holes are accessible when the moving platform is at the ends of the translation range. The stage

can be mounted using two 00-90 (M1.2 x 0.25) screws near the center with a maximum of 0.03 N·m torque.

Take care to securely mount the stage before attaching components to the stage’s moving platform.

Figure 3 Mounting Holes

Caution

Mounting the PD2(/M) stage on an uneven surface can warp the stage, degrading the

performance and possibly damaging the stage.

When mounting close to other equipment, ensure that the travel of the carriage is not

obstructed. If movement is obstructed the stage will stall, which could cause excessive wear

and premature failure.

When using the stage in the proximity of other objects or equipment, ensure that movement of

cables connected to the moving carriage is not impeded.

Avoid touching the ceramic bar under the carriage plate.

Screws and locating dowel pins that are inserted too deep into the stage will damage it. Do not

thread screws into the top plate with excessive force as they may break through the

terminating lip at the base of each threaded hole.

Travel Direction

1. Counterbore Holes for 00-90 (M1.2 x 0.25) Slotted Pan Head Screw, 10.0 mm Spacing (2 Places)

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