Newport NPC1USB User manual

Voltage Piezo
USB Amplifier
User’s Manual
V1.0.x
NPC1USB

NPC1USB Voltage Piezo USB Amplifier
Warranty
Newport Corporation warrants that this product will be free from defects in material and
workmanship and will comply with Newport’s published specifications at the time of
sale for a period of one year from date of shipment. If found to be defective during the
warranty period, the product will either be repaired or replaced at Newport's option.
To exercise this warranty, write or call your local Newport office or representative, or
contact Newport headquarters in Irvine, California. You will be given prompt assistance
and return instructions. Send the product, freight prepaid, to the indicated service
facility. Repairs will be made and the instrument returned freight prepaid. Repaired
products are warranted for the remainder of the original warranty period or 90 days,
whichever comes first.
Limitation of Warranty
The above warranties do not apply to products which have been repaired or modified
without Newport’s written approval, or products subjected to unusual physical, thermal
or electrical stress, improper installation, misuse, abuse, accident or negligence in use,
storage, transportation or handling. This warranty also does not apply to fuses, batteries,
or damage from battery leakage.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR USE. NEWPORT CORPORATION SHALL
NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, OR CONSEQUENTIAL
DAMAGES RESULTING FROM THE PURCHASE OR USE OF ITS PRODUCTS.
©2017 by Newport Corporation, Irvine, CA. All rights reserved.
Original instructions.
No part of this document may be reproduced or copied without the prior written
approval of Newport Corporation. This document is provided for information only, and
product specifications are subject to change without notice. Any change will be
reflected in future publishings.
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NPC1USB Voltage Piezo USB Amplifier
Table of Contents
Waranty ............................................................................................................................ii
EU Declaration of Conformity .........................................................................................v
1.0 Introduction .................................................................................................. 1
1.1 Scope of the Manual...........................................................................................................1
1.2 Certification of Newport Corporation ................................................................................1
1.3 Purchased Part Package......................................................................................................2
1.4 Instructions for Using Piezo Electrical Elements and Power Supplies ..............................2
1.5 Safety Instructions..............................................................................................................3
1.5.1 General Warning or Caution ................................................................................3
1.5.2 Electric Shock......................................................................................................3
1.5.3 Icons.....................................................................................................................3
1.6 Warnings and Cautions ......................................................................................................4
2.0 Warnings and Cautions................................................................................ 5
2.1 Installation, Power Supply .................................................................................................6
2.2 Operation............................................................................................................................6
2.3 Maintenance and Inspection...............................................................................................7
2.4 Environmental Conditions..................................................................................................7
3.0 NPC1USB Definition .................................................................................... 8
3.1 Keywords ...........................................................................................................................8
3.2 User Elements/Connections ...............................................................................................9
3.2.1 Front Pane ............................................................................................................9
3.3 Introduction........................................................................................................................9
3.3.1 Block Diagram.....................................................................................................9
3.3.2 Amplifier without integrated feedback controller..............................................10
3.4 Initiation ...........................................................................................................................10
3.4.1 Main Supply Voltage .........................................................................................10
3.4.2 Connecting Piezo Stage .....................................................................................10
4.0 Handling ...................................................................................................... 11
4.1 Controlling via Interface ..................................................................................................11
4.2 Configuration USB 2.0.....................................................................................................11
5.0 State Diagram ............................................................................................. 12
5.1 Command Syntax.............................................................................................................13
5.1.1 Blank Spaces......................................................................................................13
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5.1.2 Decimal Separator..............................................................................................13
5.1.3 Command Terminator........................................................................................13
5.1.4 Command Execution Time ................................................................................13
5.1.5 Command Set.....................................................................................................14
6.0 Command Overview................................................................................... 15
ID — Set/Get Stage Identifier ........................................................................................16
MM – Enter/Leave DISABLE State...............................................................................17
OR — Enable Output Stage and Set Initial Voltage.......................................................18
PA — Move Absolute ....................................................................................................19
PR — Move Relative......................................................................................................20
PW — Enter/Leave CONFIGURATION State ..............................................................21
RS — Reset Controller ...................................................................................................22
RS## — Reset Controller’s Address to 1 .......................................................................23
SA — Set/Get Controller’s RS-485 Address..................................................................24
SE — Do Nothing, No Error for Compatibility..............................................................25
SL — Set/Get Negative Software Limit.........................................................................26
SR — Set/Get Positive Software Limit ..........................................................................27
ST — Stop Motion .........................................................................................................28
TB — Get Command Error String..................................................................................29
TE — Get Last Command Error.....................................................................................30
TH — Set/ Get Point Position ........................................................................................31
TP — Same as TH for Compatibility .............................................................................32
TS — Get Positioner Error and Controller State ............................................................33
VA — Set/Get Slow Rate ...............................................................................................35
VE — Get Controller Revision Information...................................................................36
ZT — Get All Axis Parameters ......................................................................................37
7.0 Pinouts ......................................................................................................... 38
7.1 24 VDC IN and OUT (Female ø 2.1 x Ø 5.5 x 11 mm)...................................................38
7.2 USB Connector (USB Mini-B Receptacle)......................................................................38
8.0 Electrical Specifications ............................................................................. 39
9.0 Mechanical Specifications.......................................................................... 39
10.0 Environmental Conditions....................................................................... 39
Service Form ........................................................................................................ 41
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NPC1USB Voltage Piezo USB Amplifier
EU Declaration of Conformity
EDH0403En1010 — 07/17 v

NPC1USB Voltage Piezo USB Amplifier
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NPC1USB Voltage Piezo USB Amplifier
User’s Manual
CAUTION
Please read carefully before switching on the power. Please see also
instructions for safety when using piezoelectric actuators and power
supplies.
1.0 Introduction
1.1 Scope of the Manual
This manual describes the piezo amplifier NPC1USB from Newport Corporation.
If you have any problems please contact the manufacturer of the system:Newport
Corporation, 1791 Irvine Ave. Irvine, CA 92606. Phone: [phone]
1.2 Certification of Newport Corporation
Newport Corporation works in according to an ISO 9001:2008 certified quality
management system. Its effectiveness is verified and proven by periodic audits by the
BSI. Our certificate can be found at newport.com
CAUTION
This instruction manual includes important information for using
piezo actuators. Please take time and read this information. Piezo
positioning systems are mechanical systems with highest precision.
Correct handling guarantees the precision over long time.
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NPC1USB Voltage Piezo USB Amplifier
1.3 Purchased Part Package
Please check the completeness of the delivery after receiving the shipment:
•Voltage amplifier NPC1USB
•Power supply 24 VDC (Sold Separately – Model: CONEX-PS recommended)
•USB cable
•Quick Start Guide (available on Newport.com)
•.INF Drivers (available on Newport.com)
1.4 Instructions for Using Piezo Electrical Elements and Power Supplies
•Piezoelectric actuators from Newport Corporation are controlled by voltages up to
150V. These values can be quite hazardously. Therefore, please read the installation
instructions carefully.Only authorized personal should handle the power supply.
•After transportation, piezoelectric actuators should be allowed to sit for
approximately 2 hours to adapt to room temperature before being switched on.
•Piezoelectric actuators are made from ceramic materials with and without metallic
casings. The piezo-ceramic is a relatively brittle material. This should be noted when
handling piezo electric actuators. All piezo-elements are sensitive to bending or
shock forces.
•Due to the piezoelectric effect, piezo-actuators can generate electrical charges by
changing the mechanical load or the temperature or by such actions described above.
•Piezoelectric actuators are able to work under high compressive forces. Only
actuators with a pre-load can be used under tensile loads (these tensile forces must
be less than the pre-load, given in the data sheet).
•Please note that the acceleration of the ceramic material (e.g., caused by a fall,
discharging, or high dynamic applications) will occur.After excitation of the
actuators by a voltage in the upper control range, the ceramic will move and
generate an opposite high voltage after disconnection.
•Heating of the ceramic material will occur during dynamic operation and is caused
by structure conditional loss processes. Failure may occur if the temperature exceeds
specified values cited below.
•The piezoelectric effect disappears with increasing temperature up to the Curie
temperature (usual values approx. 140–250 °C).
•Piezoelectric actuators such as stacks or other devices work electrically as a
capacitor. These elements are able to store electrical energy over a long period of
time (up to some days) and the stored energy may be dangerous.
•If the actuator remains connected to the drive electronics, it will be unloaded within
a second after shutdown and quickly reaches harmless voltage values.
•Piezo-actuators can generate voltages by warming or cooling only (a result of
longitudinal change). The discharge potential should not be ignored due to the inner
capacitance. This effect is insignificantly at room temperature.
•Piezo-actuators from Newport Corporation are adjusted and glued. Any opening of
the unit will cause misalignment or possible malfunction and the guarantee will be
voided.
•Please use only original parts from Newport Corporation.
•Please contact Newport Corporation or your local representative, if there are any
problems with your actuator or power supply.
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NPC1USB Voltage Piezo USB Amplifier
CAUTION
Shock forces may damage the built-in ceramic elements. Please avoid
such forces, and handle the units with care, otherwise the guarantee
is voided.
1.5 Safety Instructions
1.5.1 General Warning or Caution
Figure 1: General Warning or Caution Symbol.
The Exclamation Symbol in Figure 1 may appear in Warning and Caution tables in this
document. This symbol designates an area where personal injury or damage to the
equipment is possible.
1.5.2 Electric Shock
Figure 2: Electrical Shock Symbol.
The Electrical Shock Symbol in Figure 2 may appear on labels affixed to the DL
Controller/Driver. This symbol indicates a hazard arising from dangerous voltage. Any
mishandling could result in irreparable damage to the equipment, in personal injury, or
death.
1.5.3 Icons
European Union CE Mark
CE Mark.
The presence of the CE Mark on New Focus equipment means that this instrument has
been designed, tested and certified compliant to all applicable European Union (CE)
regulations and recommendations.
Waste Electrical and Electronic Equipment (WEEE)
WEEE Directive Symbol.
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This symbol on the product or on its packaging indicates that this product must not be
disposed with regular waste. Instead, it is the user responsibility to dispose of waste
equipment according to the local laws. The separate collection and recycling of the
waste equipment at the time of disposal will help to conserve natural resources and
ensure that it is recycled in a manner that protects human health and the environment.
For information about where the user can drop off the waste equipment for recycling,
please contact your local Newport representative.
Control of Hazardous Substances
RoHS Compliant Symbol
This label indicates the products comply with the EU Directive 2011/65/EC that
restricts the content of six hazardous chemicals.
1.6 Warnings and Cautions
The following are definitions of the Warnings, Cautions and Notes that may be used in
this manual to call attention to important information regarding personal safety, safety
and preservation of the equipment, or important tips.
WARNING
Situation has the potential to cause bodily harm or death.
CAUTION
Situation has the potential to cause damage to property or
equipment.
NOTE
Additional information the user or operator should consider.
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NPC1USB Voltage Piezo USB Amplifier
2.0 Warnings and Cautions
RISK OF ELECTRIC SHOCK
•Do not open the units! There are no user serviceable parts
insideOpening or removing covers may expose you to dangerous
shock hazards and other risks. Refer all servicing to qualified
service personnel.
•Do not spill any liquids into the cabinet or use the units near
water.
CAUTION
•Allow adequate ventilation around the units so that heat can
properly dissipate. Do not block ventilated openings or place the
units near a radiator, oven, or other heat sources. Do not put
anything on top of the units except those that are designed for this
purpose (e.g. actuators).
•Work with the units only in a clean and dry environment. Only
specially prepared units (e.g. actuators) can work under other
conditions.
•Please only use original parts from Newport Corporation.
•Newport Corporation does not provide any warranty for damages
or malfunctions caused by additional parts not supplied by
Newport Corporation. Additional cables or connectors will change
the calibration and other specified data. This can change the
specified properties of the units and cause them to malfunction.
•Do not place the units on a sloping or unstable cart, stand, or table
as they may fall or not work accurately.
•Piezo elements are sensitive systems capable of the highest
positioning accuracy. However, they only demonstrate their
excellent properties if they are handled correctly. Please only
mount them at the special mounting points.
Immediately unplug your unit from the wall outlet and refer
servicing to qualified service personnel under the following
conditions:
•When the power supply cord or plug is damaged.
•If cleaning supplies or liquid has been spilled or objects have
fallen into the unit.
•If the unit has been exposed to rain or water.
•If the unit has been dropped or the housing is damaged.
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NPC1USB Voltage Piezo USB Amplifier
2.1 Installation, Power Supply
RISK OF ELECTRIC SHOCK
•Do not insert or unplug the power plug with wet hands, as this
may result in electrical shock.
•Do not install in rooms where flammable substances are stored. If
flammable substances come into contact with electrical parts
inside, a fire or electrical shock may occur.
•Do not damage or modify the power cord. Do not pull on,
excessively bend, or place heavy objects on the power cord, as this
could cause electrical damage and result in a fire or electrical
shock.
•Always grasp the plug portion when unplugging the power plug.
Pulling on the cord may expose or snap the core wire, or
otherwise damage the power cord. Damaging the cord may cause
an electricity leak and result in a fire or electrical shock.
CAUTION
•Do not use accessories other than those provided (e.g. power
cord). Plug the power cord only in grounding equipment
conductor power sockets to prevent inadvertent loosening.
•Do not place heavy objects on any cables (e.g. power cords, sensor
cables, actuator cables, optical cables).
•Leave sufficient space around the power plug so that it can be
unplugged easily. If objects are placed around the power plug, you
will be unable to unplug it in case of an emergency.
•Install the system so that the on/off-switch is accessible without
problem.
2.2 Operation
Please note the area with general safety precautions.
RISK OF ELECTRIC SHOCK
Do not spill inflammable substances inside the voltage amplifier. If
these substances come into contact with an electrical component
inside the voltage amplifier, a fire or electrical shock may occur.
CAUTION
If the voltage amplifier emits smoke, excess heat, or unusual smells,
immediately turn off the power switch and unplug the power plug
from the outlet. Then contact Newport Corporation for technical
services.
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NPC1USB Voltage Piezo USB Amplifier
2.3 Maintenance and Inspection
CAUTION!
•When cleaning the exterior box of the voltage amplifier, first turn
off the power switch and unplug the power plug. Failure to follow
these procedures may result in a fire or electrical shock.
•Clean the exterior box using a firmly wrung-out cloth. Do not use
alcohols, benzene, paint thinner or other inflammable substances.
If flammable substances come into contact with an electrical
component inside the voltage amplifier, a fire or electrical shock
may occur.
2.4 Environmental Conditions
The amplifier can be used in the following environmental conditions:
•Indoor
•Altitude up to 2,000 m
•Temperature: -40–80 °C
•Relative humidity: 5–80% (non-condensing)
The recommended environmental conditions detailed in the following:
•Indoor
•Altitude up to 2,000 m
•Temperature: 15–40 °C
•Relative humidity: 10– 70% (non-condensing)
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NPC1USB Voltage Piezo USB Amplifier
3.0 NPC1USB Definition
Piezo Amplifier for one PZT Actuator with a USB Interface; no feedback sensor (i.e.
Open Loop Mode).
3.1 Keywords
Closed Loop
The operating mode for piezo actuating systems with integrated feedback sensor
system; position accuracy is constantly controlled.
Open Loop
The operating mode for actuating systems without feedback sensor inside;no position
information is available.
Modulation Input
The amplifier can be controlled by an applied analogue voltage signal from 0 V to
+10 V.
Monitor Output
The output voltage signal corresponds to the position of the piezo actuating system with
the applied voltage signal (OPEN LOOP mode only for NPC1USB).
PC Interface
USB 2.0
Hyper Terminal Program
This software enables the control of the piezo actuating system by using the USB
interface. The available commands are described in chapter 5.0: “State Diagram”.
Soft Start
Initialize after turning-on procedure. During the initialization sequence, the piezo
electrical actuator is controlled for approximately 10 seconds with a voltage signal of
130 V.
NOTE
The actuating system is moving during the initialization process.
Main Supply Voltage
The main supply voltage to the amplifier is 24 VDC; an external wide range power
supply needed for use (Recommended: CONEX-PS from Newport Corporation).
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NPC1USB Voltage Piezo USB Amplifier
3.2 User Elements/Connections
3.2.1 Front Panel
3.3 Introduction
The NPC1USB piezo stack amplifier is designed to control one low voltage piezo
actuator with higher output current. The amplifier comes as a stand-alone device with a
standard PC interface and USB connection. The NPC1USB can be controlled by an
analog voltage signal of 24 V or by PC interface.
The NPC1USB is designed to control open loop actuating systems without any internal
feedback sensor.
3.3.1 Block Diagram
The chart below shows the block diagram of the NPC1USB. With exception of the
display and the processor, the circuit is a similar of the NPC amplifier series.
NOTE
The travel capability of actuators or stages is limited to 80% due to the limited
voltage range of the NPC1USB. With a lower current, the achievable rise times
and frequencies are expected to be lower depending on the actuator/stage type.
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NPC1USB Voltage Piezo USB Amplifier
3.3.2 Amplifier without integrated feedback controller
Any system delivered in open loop mode cannot be modified to be in closed loop later
on.
Any closed loop system can be easily calibrated to a different closed loop piezo. This is
only possible at Newport Corporation and will require additional effort and costs.
Please contact our sales team for more information.
3.4 Initiation
Please follow all safety instructions given in this user manual and the NPC1USB Quick
Start Guide.
3.4.1 Main Supply Voltage
The NPC1USB amplifier requires a main supply voltage of 24 VDC. A power supply
unit suitable for voltages from 100 up to 240 Volt AC is included in the shipment. The
socket for the main supply voltage is located on the back panel of the amplifier.
3.4.2 Connecting Piezo Stage
Piezo electric stages are connected to the amplifier unit by using the D-SUB connector
on the back panel. Please make sure that the amplifier is switched off when connecting /
disconnecting the PZT to the amplifier. Please fasten the screws of the D-SUB
connector to guarantee a firm connection.
Please refer to the instructions and list of commands in Chapter 10 of this manual.
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NPC1USB Voltage Piezo USB Amplifier
4.0 Handling
4.1 Controlling via Interface
The amplifier NPC1USB is controlled via an USB 2.0 interface. Therefore, signal
parameters and information about the actuator position or status can be adjusted or
settled directly in the computer interface. Furthermore, the system settings of the
amplifier unit can also be changed by using the interface. A fully PC controlled piezo
system for automation purposes is feasible. Please connect the amplifier system by
using the USB interface with your PC.
Please Note: The Piezo Amplifier must be turned off during this process.
For using the interface, a simple Terminal-Program can be used. (Please note that the
program “WINDOWS-HyperTerminal” isn’t a part of Microsoft® WINDOWS since
WINDOWS–VISTA is launched). By using the USB interface, please install the
necessary driver which is supplied on the Newport Corporation website at:
www.newport.com/p/NPC1USB
The supplied VI-driver is used for the integration of the amplifier systems into an
existing Lab-View® program or for programming of a new program. As a part of the
supplied software package software for controlling of the amplifier units is included or
can be downloaded from our web site as well.
4.2 Configuration USB 2.0
For external control by PC interface USB 2.0 the following settings are necessary:
Baud rate / Bits per second
57,600
Data bits
8
Stop bits
1
Parity
None
Flow control
Hardware
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NPC1USB Voltage Piezo USB Amplifier
5.0 State Diagram
For a safe and consistent operation, the NPC1USB Uses 6 different operation states:
Not referenced, Configuration, Homing, Ready, Disable and Moving. In each state, only
specific commands are accepted by the NPC1USB. It is important to understand the
state diagram below and which commands and actions cause transition between
different states. Also, see the TS command for command/state information:
End of Runs encountered in the following state
NOT REFERENCED: No action
CONFIGURATION: No action
HOMING: Set voltage to zero and then change to NOT
REFRENCED state
MOVING: Abort motion and then change to NOT REFRENCED
state
READY: Change to NOT REFERENCED state
DISABLE: Change to NOT REFERENCED state
LED display
NOT REFERENCED: If everything is OK then SOLID ORANGE
NOT REFERENCED: If hardware faults or wrong parameters the SOLID RED
NOT REFERENCED: If end of runs then SLOW BLINK ORANGE
CONFIGURATION: SLOW BLINK RED
READY: SOLID GREEN
DISABLE: SLOW BLINK GREEN
HOMING: FAST BLINK GREEN
MOVING: FAST BLINK GREEN
After connecting the NPC1USB to power, the controller must first be initialized. When
the initialization is successful, the controller gets to the NOT REFRENCED state. From
the NOT REFRENCED state, the controller can go to the CONFIGURATION state
Configuration
Not Referenced
Moving
Disable
Homing
Ready
RS
PW1
PW0
OR
Following Error
Done
PA/PR
Done
MM0
MM1
Hardware Fault
•no power supply voltage
•no high voltage for the actuator
•actuator voltage is lower than expected
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NPC1USB Voltage Piezo USB Amplifier
with the PW1 command. In CONFIGURATION state, the NPC1USB allows changing
all stage configuration parameters like? The PW0 command saves all changes to the
controller’s memory and returns the controller back to the NOT REFERENCED state.
To execute any move commands (PA, PR), the controller must be in the READY state.
To get from the NOT REFERENCED state to the READY state, the positioned must be
homed first with the OR command. During homing (OR command execution), the
controller is in HOMING state. If the homing is successful, the controller automatically
gets to the READY state. The process for homing, and which signals are looked for
during homing, can be defined with the HT command.
5.1 Command Syntax
The NPC1USB is a command driven controller. The general format of a command is a
two letter ASCII character preceded and followed by parameters specific to the
command:
Command format:
nn AA xx
nn Optional or required controller address.
AA Command name.
xx Optional or required value or “?” to query current value.
Both, upper and lower case characters are accepted. Depending on the command, it can
have an optional or required prefix (nn) for the controller address and/or a suffix (xx)
value or a “?”.
5.1.1 Blank Spaces
Blanks are allowed and ignored in any position, including within a numerical value. The
following two commands are equivalent, but the first example might be confusing and
uses more memory:
2PA1.43 6
2PA1.436
5.1.2 Decimal Separator
A dot (“.”) is used as a decimal separator for all numerical values.
5.1.3 Command Terminator
Commands are executed as the command terminator CRLF (carriage-return line-feed,
ASCII 13 and ASCII 10) is received. The controller will analyze the received string. If
the command is valid and its parameters are in the specified range, it will be executed.
Otherwise it will be memorized as an error.
After the execution of the command, all remaining characters in the input string, if any,
will be ignored. Therefore, it is not possible to concatenate several commands on a
single string from the PC to the NPC1USB.
Each command will properly handlethe memorization of related errors that can be
accessed with the TE command. Please refer to the command set in chapter 5.1.5 for
details.
5.1.4 Command Execution Time
The NPC1USB controller interprets commands continuously as they are received. The
typical execution time for a "tell position command" (nTP?) is about 10 ms. Here,
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NPC1USB Voltage Piezo USB Amplifier
command execution time means the time from sending the command until receiving the
answer.
It is important to note that a move command that may last for several seconds, will not
suspend the controller from further command execution. So for an efficient process flow
with many move commands, it is recommended to use the PT command (to get time for
a relative move), the TS command (to query the controller status) , or the TP command
(to get current position) before any further motion command is sent.
5.1.5 Command Set
This chapter describes the supported two-letter ASCII commands used to configure and
operate the NPC1USB. The general command format is:
nn AA xx
nn Optional or required controller address.
AA Command name.
xx Optional or required value or “?” to query current value.
Most commands can be used to set a value (in that case the command name is followed
by the value “xx”) or to query the current value (in that case the command name is
followed by a “?”). When querying a value, the controller responds with the command it
received followed by the queried value. For example, a 1VA10 sets the velocity of the
controller #1 to 10 units/second. A “1VA?” sends the response “1VA10”.
Not every command can be executed in all states of the NPC1USB and some commands
have different meaning in different states. It is therefore important to understand the
state diagram of the controller, see chapter 5.0: “State Diagram”.
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