Newport Closed Loop Picomotor 8310CE User manual

Model 8310CE
User Manua
l
Closed Loop Picomotor™
Actuator

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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 occurs last.
Limitation of Warranty
This warranty does not apply to defects resulting from modification or misuse of any
product or part.
CAUTION
Warranty does not apply to damages resulting from:
•Incorrect usage:
–Driven load greater than maximum specified load.
–Actuator speed higher than specified speed.
–Improper grounding.
–Connectors must be properly secured.
–When the load on the stage represents an electrical risk, it must be
connected to ground.
–Excessive or improper cantilever loads.
•Modification of the actuator or any part thereof.
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
©2019 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.
CAUTION
Please return equipment in the
original (or equivalent) packing.
You will be responsible for
damage incurred from inadequate
packaging if the original
packaging is not used.

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EU Declaration of Conformity

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Definitions and Symbols
The following terms and symbols are used in this documentation and also appear on the
product where safety-related issues occur.
General Warning or Caution
The exclamation symbol 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.
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
Warning indicates a potentially dangerous situation which can result in bodily
harm or death
CAUTION
Caution indicates a potentially hazardous situation which can result in damage to
product or equipment
NOTE
Note indicates additional information that must be considered by the user or
operator.
European Union CE Mark
The presence of the CE Mark on Newport Corporation equipment means
that it has been designed, tested and certified as complying with all
applicable European Union (CE) regulations and recommendations.
Waste Electrical and Electronic Equipment (WEEE) Mark
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 con tact your local Newport
representative.
Protective Earth Symbol
The Protective Earth Symbol appears next to the grounding point at the
front of the actuator housing.

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Warnings & Caution
WARNING
Do not attempt to operate this equipment if there is evidence of shipping damage
or you suspect the unit is damaged. Damaged equipment may present additional
hazards to you. Contact Newport technical support for advice before attempting to
plug in and operate damaged equipment.
WARNING
The Picomotor is intended for use ONLY with Newport Picomotor
Controller/Driver units. Connection of other devices to the motor may cause
damage to the unit or the connected device, fire, and/or personal injury.
CAUTION
This motor is a Class A device. In a residential environment, this device can cause
electromagnetic interference. In this case, suitable measures must be taken by the
user.
WARNING
Do not use this motor when its motor is emitting smoke or is unusually hot to the
touch or is emitting any unusual odor or noise or is in another abnormal state.
Stop using the motor immediately, switch off the motor power and then disconnect
the electronics power supply.
After checking that smoke is no longer being emitted contact your Newport service
facility and request repairs. Never attempt to repair the motor yourself as this can
be dangerous.
CAUTION
Do not leave this motor in places subject to extremely high temperatures or low
temperatures. This may cause an electric shock.
•Operating temperature: +10 to +40 °C
•Storage/Operating altitude: 1000 m
•Storage/Operating humidity: 85%
•Storage temperature: -40 to +100 °C (in its original packaging).

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WARNING
Make sure that this motor is not exposed to moisture and that liquid does not get
into the motor.
Nevertheless, if any liquid has entered the motor, switch off the motor power and
then disconnect the electronics from power supply.
Contact your Newport service facility and request repairs.
WARNING
Do not insert or drop objects into this motor, this may cause an electric shock, or
lock the motor.
Do not use this motor if any foreign objects have entered the motor. Switch off the
motor power and then disconnect the electronics power supply.
Contact your Newport service facility for repairs or replacement.
CAUTION
Do not place this stage in a location affected by dust, oil fumes, steam or high
humidity. This may cause an electric shock.
CAUTION
There are no user serviceable parts inside the device. Work performed by persons
not authorized by Newport will void the warranty.
CAUTION
Be careful that the stage is not bumped when it is being carried. This may cause it
to malfunction.
WARNING
When handling this stage, always unplug the equipment from the power source for
safety.
WARNING
If this equipment is used in a manner not specified in this manual, the protection
provided by this equipment may be impaired.

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Closed Loop Picomotor
™
Actuator
Model 8310CE
1.0 Getting Started
The Model 8310CE closed loop Picomotor™ actuator has two cables—the motor cable
terminated with a RJ-22 connector, and the encoder/limitswitch cable terminated in a
high-density DB-15 connector. Because only the patented Picomotor drive waveform
can be used to drive the Picomotor actuator, you must insert the RJ-22 connector into a
Newport Picomotor controller & driver module (Model 8742 4-channel open loop,
Model 8743-CL 2-channel closed loop), or single-axis Picomotor driver module (Model
8703 TTL/Analog driver). With these recommended drivers you should be able to move
the actuator through a hand terminal (Model 8758), or computer (refer to the driver
manuals for specific motion-control command sets).
If you are using the Model 8743-CL closed loop Picomotor controller & driver module,
connect the high-density DB-15 to the driver’s DB-15 port, and refer to the Model
8743-CL manual for more detailed directions on interfacing with the Model 8310CE.
If you are using a third-party motion controller, refer to the cable pinout to interface
with the controller. (Keep in mind that you will still need to use a Picomotor driver such
as the Model 8742 Picomotor controller & driver module or the Model 8703
TTL/Analog Picomotor driver module). The Model 8310CE is compatible with any
third-party motion controller that can read TTL-level quadrature encoder signals. The
limit sensors are openemitter outputs. When the actuator is centered, these outputs are
pulled low through a transistor that is rated to 20 mA. When the actuator reaches its end
of travel, one of the limit sensors will change to a floating voltage. By using a 10-k Ω
pull-up resistor to 5 V, you can convert these sensor signals to TTL levels (See diagram
in Cable Pinout).
NOTE
Do not open the motor cover or cut the motor cable. High voltages (up to 120 V,
200 mA) are accessible with the cover removed or the cable cut.

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2.0 Mounting the Motor
The mounting shaft is 0.375”—typical in standard micrometers. We have provided a
threaded nut, so you can insert the motor into a bushing and tighten the nut to mount the
motor. This is the preferred mounting method because it reduces the possibility of
distortion on the motor’s housing.
If instead you’re going to mount the motor’s shaft in a micrometer clamp, be careful not
clamp too hard on the motor’s housing. This can deform the motor’s shank and may
cause in-creased friction between the inner rotating screw and the fixed exterior
housing. If the motor slows or fails completely, try loosening the clamp.
You can turn the motor manually using the hex nut at the end of the screw. Please be
careful, however, not to touch the threads of the screw with your tools. Any damage to
the screw threads will result in a significantly shorter motor lifetime. (See the Tips for
Achieving Nanometer-Scale Performance below).
3.0 Tips for Achieving Nanometer-Scale Performance
The Model 8310CE closed loop Picomotor™ actuator offers <1 µm repeatability when
approaching a target encoder count from any direction, <0.5 µm repeatability when
approaching from a single direction, and 52.9 nm encoder resolution. (The actual
inherent motor step size is considerably smaller—approximately 20 nm). To achieve
consistent nanometer-level performance, you need only keep a few precautions in mind.
•Use a small amount of lubricant between the stainless-steel ball tip and the load
surface to prevent wear and the generation of debris in the interface. We recommend
Krytox GPL 205 or the low-vapor pressure Krytox, LVP grease.
•Keep the interface between the stainless-steel ball tip and the load surface clean of
debris. Even small particles on the order of a micron can result in 0.1 to 10 µm
differences between the encoder reading and the actual moved distance.
•Use the Model 8310CE for pushing against smooth, hard, flat surfaces only, such as
the sapphire pads used in Newport mirror mounts and translation stages. Pushing on
aluminum or stainless-steel surfaces will wear out the ball tip. If the load surface is
too soft, small amounts of material can build up in the interface between the ball tip
and load surface resulting in surface roughness which can degrade repeatability.
•Do not push against cone or v-shapes, especially in softer materials such as
aluminum. When the ball wears against a cone or v-shape in softer materials,
particle generation can lead to increased friction and torsional loads. These torsional
loads can easily exceed the torsional load limit of 2.5 oz-in (0.018 N•m) thus stalling
the motor.
•Avoid damage to the screw threads. Do not touch the screw threads with any hard
object—even lightly. To provide the fine resolution, the screw has very fine-pitch
threads. If the threads are damaged, this damaged area will produce repeated
excessive wear within the fixed motor housing and significantly reduce the lifetime
of the motor.

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•Avoid clamping tightly on the motor’s housing. As stated in Mounting the Motor,
this can cause increased friction between the rotating inner screw and the fixed
exterior housing resulting in slowed motor motion or complete failure. This can also
result in damaged screw threads.
•Periodically examine the stainless-steel ball tip and the load surface for wear.
4.0 Specifications
Bi-Directional Repeatability ±1 µm Over Full Travel (from either direction)
ni-Directional Repeatability ±0.5 µm Over Full Travel (from same direction)
Speed (@ 2 kHz pulse rate) 2.4 mm/min (40 µm/s typical)
Closed loop Settling Time <100 ms with 8743-CL Controller
Closed loop Steady-State Error 0 counts with 8743-CL Controller
Encoder Resolution 52.9 nm per encoder count
(1)
Connector Type: One Each 15-Pin High-Density D-sub and 4-Pin RJ-22
Survival Temperature Range (non-operating) -30 to +85 °C
Mounting 0.375" (9.5 mm) Shank
Linear Travel 0.50" (12.7 mm)
Minimum Incremental Motion <30 nm
Limit Sensors 2
Angular Resolution <0.6 mrad
Maximum Load 5 lbs (22 N)
Torque 2.5 oz-in (0.018 N·m)
Operating Temperature 10–40 °C
Lifetime 1 Billion Steps
(2)
Cable Length 6 Feet, Both Cables
1)
The encoder resolution is 1500 cycles per revolution, and with quadrature encoding this results in 6000
counts per revolution. With the 80-pitch 80 turns per inch) screw sets used in the Model 8310CE, this
results in an encoder resolution of 52.9 nm per encoder count.
2)
Lifetime is tested by cycling actuator out 1 mm of travel range and back pushing a 5 lb load.

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5.0 Encoder Cable Pinout
NOTE
The Model 8310CE encoder outputs are differentially encoded on two wires. For a
controller which accepts only single-ended encoder signals, tie –A, and –B to GND.
Example Wiring Diagram
6.0 Dimensions

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Service Form
Your Local Representative
Tel.: __________________
Fax:___________________
Name:__________________________________________________ Return authorization #: ____________________________________
Company:_______________________________________________ (Please obtain prior to return of item)
Address:________________________________________________ Date: __________________________________________________
Country: ________________________________________________ Phone Number: __________________________________________
P.O. Number: ____________________________________________ Fax Number: ____________________________________________
Item(s) Being Returned:____________________________________
Model#: ________________________________________________ Serial #: ________________________________________________
Description: ________________________________________________________________________________________________________
Reasons of return of goods (please list any specific problems):_________________________________________________________________
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North America & Asia
Newport Corporation
1791 Deere Ave.
Irvine, CA 92606, USA
Sales
Tel.: [phone]
e-mail: [e-mail]
Technical Support
Tel.: [phone]
e-mail: [e-mail]
Service, RMAs & Returns
Tel.: [phone]
e
-
mail:
[email protected]
Europe
MICRO-CONTROLE Spectra-Physics S.A.S
9, rue du Bois Sauvage
91055 Évry CEDEX
France
Sales
Tel.: [phone]
e-mail: [email protected]
Technical Support
e-mail: [email protected]
Service & Returns
Tel.: [phone]
Visit Newport nline at:
Visit Newport nline at:Visit Newport nline at:
Visit Newport nline at:
www.newport.com
www.newport.comwww.newport.com
www.newport.com