Newport 350B User manual

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Temperature Controllers
User’s Manual
Model 350B

ii
EU Declaration of Conformity
We declare that the accompanying product, identified with the mark, complies with
requirements of the Electromagnetic Compatibility Directive, 2001/108/EC and the Low
Voltage Directive 2006/95/EC.
Model Number: Model 350B Series Temperature Controllers
Year mark affixed: 2004
Type of Equipment: Electrical equipment for measurement, control and laboratory use
Standards Applied:
Compliance was demonstrated to the following standards to the extent applicable:
BS EN61326-1: 2006 “Electrical equipment for measurement, control and laboratory use
–EMC requirements”
IEC 61010-1:2010 “Safety requirements for electrical equipment for measurement,
control and laboratory use”
Todd McFarland
Senior Electrical Engineer
31950 E Frontage Rd
Bozeman, MT, USA

Preface iii iii
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 a local Newport office or representative, or
contact Newport headquarters in Irvine, California. Prompt assistance and return
instructions will be given. 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 first occurs.
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.
First printing 2004
© 2004 by Newport Corporation, Irvine, CA. All rights reserved. No part of this manual
may be reproduced or copied without the prior written approval of Newport Corporation.
This manual has been provided for information only and product specifications are
subject to change without notice. Any change will be reflected in future printings.
Newport Corporation
1791 Deere Avenue
Irvine, CA, 92606
USA
Part No. 90036887 RevC May 2016

iv
Confidentiality & Proprietary Rights
Reservation of Title:
The Newport programs and all materials furnished or produced in connection with them
("Related Materials") contain trade secrets of Newport and are for use only in the manner
expressly permitted. Newport claims and reserves all rights and benefits afforded under
law in the Programs provided by Newport Corporation.
Newport shall retain full ownership of Intellectual Property Rights in and to all
development, process, align or assembly technologies developed and other derivative
work that may be developed by Newport. Customer shall not challenge, or cause any
third party to challenge the rights of Newport.
Preservation of Secrecy and Confidentiality and Restrictions to Access:
Customer shall protect the Newport Programs and Related Materials as trade secrets of
Newport, and shall devote its best efforts to ensure that all its personnel protect the
Newport Programs as trade secrets of Newport Corporation. Customer shall not at any
time disclose Newport's trade secrets to any other person, firm, organization, or employee
that does not need (consistent with Customer's right of use hereunder) to obtain access to
the Newport Programs and Related Materials. These restrictions shall not apply to
information (1) generally known to the public or obtainable from public sources; (2)
readily apparent from the keyboard operations, visual display, or output reports of the
Programs; 3) previously in the possession of Customer or subsequently developed or
acquired without reliance on the Newport Programs; or (4) approved by Newport for
release without restriction.
Trademarks
The Newport logo is a registered trademark of Newport Corporation in Austria,
Barbados, Benelux, Canada, the People’s Republic of China, Denmark, France,
Germany, Great Britain, Ireland, Japan, the Republic of Korea, Spain, Sweden, and the
United State. Newport is a registered trademark of Newport Corporation in Austria,
Barbados, Benelux, the People’s Republic of China, Denmark, France, Germany, Ireland,
Japan, the Republic of Korea, Spain, and Sweden.
Service Information
This section contains information regarding factory service for the source. The user
should not attempt any maintenance or service of the system or optional equipment
beyond the procedures outlined in this manual. Any problem that cannot be resolved
should be referred to Newport Corporation.

Preface v v
Technical Support Contacts
North America & Asia
Europe
Newport Corporation Service Dept.
1791 Deere Ave. Irvine, CA 92606
Telephone: [phone]
Telephone: [phone] x31694
Newport/MICRO-CONTROLE S.A.
Zone Industrielle
45340 Beaune la Rolande, FRANCE
Telephone: [phone]
Asia
Newport Opto-Electronics
Technologies
253 Aidu Road, Bld #3, Flr 3, Sec C,
Shanghai 200131, China
Telephone: [phone]
Fax: [phone]
Newport Corporation Calling Procedure
If there are any defects in material or workmanship or a failure to meet specifications, promptly
notify Newport's Returns Department by calling
1-800-222-6440 or by visiting our website at www.newport.com/returns within the warranty
period to obtain a Return Material Authorization Number (RMA#). Return the product to
Newport Corporation, freight prepaid, clearly marked with the RMA# and the unit will either
repaired or replaced at our discretion. Newport is not responsible for damage occurring in transit
and is not obligated to accept products returned without an RMA#.
E-mail: [email protected]
When calling Newport Corporation, please provide the customer care representative with the
following information:
Contact Information
Serial number or original order number
Description of problem (i.e., hardware or software)
To help our Technical Support Representatives diagnose the problem, please note the following conditions:
Is the system used for manufacturing or research and development?
What was the state of the system right before the problem?
Have this problem been seen before? If so, how often?
Can the system continue to operate with this problem? Or is the system non-operational?
Can any differences be identified from before this problem occurred?

vi
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Preface vii vii
Table of Contents
EU Declaration of Conformity ...............................................................ii
Warranty.............................................................................................. iii
Technical Support Contacts..................................................................v
Table of Contents...................................................................... vii
List of Figures and Tables......................................................ix
1Safety Precautions 11
1.1 Definitions and Symbols...........................................................11
1.1.1 European Union CE Mark .......................................................................11
1.1.2 Alternating voltage symbol......................................................................11
1.1.3 On............................................................................................................11
1.1.4 Off............................................................................................................12
1.1.5 Fuses.......................................................................................................12
1.1.6 Frame or Chassis....................................................................................12
1.1.7 Protective Conductor Terminal................................................................13
1.2 Warnings and Cautions............................................................13
1.2.1 General Warnings....................................................................................13
1.2.2 General Cautions.....................................................................................14
1.2.3 Summary of Warnings and Cautions.......................................................15
1.3 Location of Warnings ...............................................................16
1.3.1 Rear Panel...............................................................................................16
2General Information 17
2.1 Introduction ..............................................................................17
2.2 Accessories..............................................................................20
3Getting Started 21
3.1 Unpacking and Handling..........................................................21
3.2 Inspection for Damage.............................................................21
3.3 Available Options and Accessories..........................................21
3.4 Parts List..................................................................................22
3.5 Choosing and Preparing a Suitable Work Area........................22
3.6 Electrical Requirements...........................................................22
3.7 Power Supplies........................................................................23
4System Operation 25
4.1 Front Panel ..............................................................................25
4.1.1 AC Power Switch.....................................................................................25

viii
4.1.2 Analog Output..........................................................................................25
4.1.3 Mode Switch............................................................................................26
4.1.4 Output Section.........................................................................................26
4.1.5 Status .................................................................................................26
4.1.6 Display .................................................................................................26
4.1.7 Control Knob............................................................................................27
4.2 Rear Panel...............................................................................28
4.2.1 USB Interface..........................................................................................28
4.2.2 Sensor Select Switch...............................................................................28
4.2.3 TE Driver Output Connector....................................................................28
4.2.4 AC Power Inlet.........................................................................................29
4.2.5 Frame or Chassis Terminal.....................................................................29
4.2.6 Power Inlet Socket...................................................................................29
5Computer Interfacing 31
5.1 Memory....................................................................................31
5.2 Commands and Queries..........................................................31
6Software Application 46
6.1 Overview..................................................................................46
6.2 Connection...............................................................................46
6.3 General Usage.........................................................................47
6.3.1 LDD Tab..................................................................................................47
6.3.2 TEC Tab..................................................................................................48
6.4 Menu Structure.........................................................................48
7Principles of Operation 49
7.1 Introduction ..............................................................................49
7.2 Thermistor................................................................................49
7.2.1 The Steinhart-Hart Equation....................................................................50
7.2.2 Table of Constants ..................................................................................51
7.3 Using Thermo-Electric Modules...............................................52
7.4 Mounting Considerations .........................................................53
7.5 PID Tuning...............................................................................55
7.5.1 PID Control Loop.....................................................................................55
7.5.2 P Loop .................................................................................................56
7.5.3 PI Loop .................................................................................................57
7.5.4 PID Loop .................................................................................................57
7.6 Model 350B Setup....................................................................58
7.6.1 Model 350B Operating Checklist.............................................................58

Preface ix ix
8Maintenance and Service 61
8.1 Enclosure Cleaning..................................................................61
8.2 Fuse Replacement...................................................................61
8.3 Obtaining Service.....................................................................62
8.4 Service Form............................................................................63
List of Figures
Figure 1 CE Mark ........................................................................11
Figure 2 Alternating Voltage Symbol...........................................11
Figure 3 On Symbol.....................................................................11
Figure 4 Off Symbol.....................................................................12
Figure 5 Fuse Symbol .................................................................12
Figure 6 Frame or Chassis Terminal Symbol ..............................12
Figure 7 Protective Conductor Terminal......................................13
Figure 8 AC Receptacle Warning Label ......................................14
Figure 9 Locations of warnings on the rear panel........................16
Figure 10 WEEE Directive Symbol................................................16
Figure 11 Front Panel Layout (325B shown).................................25
Figure 12 Rear Panel ....................................................................28
Figure 13 Application front panel (TEC Tab).................................46
Figure 14 Application front panel when communicating (LDD Tab)47
Figure 15 Thermistor Resistance versus Temperature..................51
Figure 16 TE Module Configuration...............................................53
Figure 17 Mounting arrangement of a TE module, heat sink and laser
diode .............................................................................54
Figure 18 Basic block diagram of a temperature control system...55
Figure 19 Proportional Temperature Controller Block Diagram.....56
Figure 20 PI Temperature Controller Block Diagram.....................57
Figure 21 PID Temperature Controller Block Diagram..................57
Figure 22 Fuse Replacement ........................................................61
List of Tables
Table 1 Specifications Tables ....................................................19
Table 2 Command Summary .....................................................33
Table 3 Comparison of Curve Fitting Equations.........................51
Table 4 Thermistor Constants....................................................52

x
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1 Safety Precautions
1.1 Definitions and Symbols
The following terms and symbols are used in this documentation and also appear on the
Model 350B Temperature Controllers where safety-related issues occur.
1.1.1 European Union CE Mark
Figure 1 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.
1.1.2 Alternating voltage symbol
Figure 2 Alternating Voltage Symbol
This international symbol implies an alternating voltage or current.
1.1.3 On
Figure 3 On Symbol
The On Symbol in the figure above represents a power switch position on the Model
350B Temperature Controllers. This symbol represents a Power On condition.
~

12 General Information
1.1.4 Off
Figure 4 Off Symbol
The Off Symbol in the figure above represents a power switch position on the Model
350B Temperature Controllers. This symbol represents a Power Off condition.
1.1.5 Fuses
Figure 5 Fuse Symbol
The fuse symbol in the figure above identifies the fuse location on the Model 350B
Temperature Controllers.
1.1.6 Frame or Chassis
Figure 6 Frame or Chassis Terminal Symbol
This symbol identifies the frame or chassis terminal.

General Information 13 13
1.1.7 Protective Conductor Terminal
Figure 7 Protective Conductor Terminal
The protective conductor terminal symbol in the above figure identifies the location
of the bonding terminal, which is bonded to conductive accessible parts of the
enclosure for safety purposes. The intent is to connect it to an external protective
earthing system through the power cord.
1.2 Warnings and Cautions
The following are definitions of the Warnings, Cautions and Notes that are used
throughout this manual to call attention to important information regarding user safety,
the safety and preservation of equipment or an important tip.
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.
1.2.1 General Warnings
Observe these general warnings when operating or servicing this equipment:
Heed all warnings on the unit and in the operating instructions.
Do not use this equipment in or near water.
This equipment is grounded through the grounding conductor of the power cord.
Route power cords and other cables so they are not likely to be damaged.
Disconnect power before cleaning the equipment. Do not use liquid or aerosol
cleaners; use only a damp lint-free cloth.
Lockout all electrical power sources before servicing the equipment.
To avoid fire hazard, use only the specified fuse(s) with the correct type number,
voltage and current ratings as referenced in the appropriate locations in the
service instructions or on the equipment. Only qualified service personnel should
replace fuses.

14 General Information
To avoid explosion, do not operate this equipment in an explosive atmosphere.
Qualified service personnel should perform safety checks after any service.
1.2.2 General Cautions
Observe these cautions when operating or servicing this equipment:
Before applying power, carefully read the warning label placed over the AC
power input receptacle in back of the instrument.
Figure 8 AC Receptacle Warning Label
If this equipment is used in a manner not specified in this manual, the protection
provided by this equipment may be impaired.
To prevent damage to equipment when replacing fuses, locate and correct the
problem that caused the fuse to blow before re-applying power.
Do not block ventilation openings.
Use only the specified replacement parts.
Follow precautions for static sensitive devices when handling this equipment.
This product should only be powered as described in the manual.
There are no user-serviceable parts inside the Model 350B Temperature
Controllers.
To prevent damage to the equipment, read the instructions in the equipment
manual for proper input voltage.
Damage may occur if Voltage Select tumbler is turned without removing from
the Input Power cord.

General Information 15 15
1.2.3 Summary of Warnings and Cautions
The following general warning and cautions are applicable to this instrument:
WARNING
Before operating the Model 350B Temperature Controllers, please read and
understand all of Section 1.
WARNING
Do not attempt to operate this equipment if there is evidence of shipping
damage or there is reason to suspect the unit is damaged. Damaged
equipment may present additional hazards to the user. Contact Newport
technical support for advice before attempting to plug in and operate
damaged equipment.
WARNING
To avoid electric shock, connect the instrument to properly earth-grounded,
3-prong receptacles only. Failure to observe this precaution can result in
severe injury.
WARNING
To reduce the risk of electric shock or damage to the instrument, turn the
power switch off and disconnect the power cord before replacing a fuse.
WARNING
Before cleaning the enclosure of the Model 350B Temperature Controllers,
the AC power cord must be disconnected from the wall socket.
CAUTION
Make sure that the selector is set at the position that corresponds to the
mains voltage. Follow directions in section 4.2.4 to properly set tumbler.
CAUTION
There are no user serviceable parts inside the Model 350B Temperature
Controllers. Work performed by persons not authorized by Newport
Corporation will void the warranty. For instructions on obtaining warranty
repair or service, please refer to Section 8.
CAUTION
All units are factory preset to operate at 108-132VAC, 60Hz.

16 General Information
1.3 Location of Warnings
1.3.1 Rear Panel
Figure 9Locations of warnings on the rear panel
NOTE
The Model 350B Temperature Controller is intended for use in an industrial laboratory
environment. Use of these products in other environments, such as residential, may result in
electromagnetic compatibility difficulties due to conducted as well as radiated disturbances.
Figure 10 WEEE Directive Symbol
This symbol on the product or on its packaging indicated that this product must not be
disposed of 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 a local Newport Corporation representative.
Frame or Chassis
Terminal
Electrical Hazard
MAX Power
(Series 350B shown)
Fuse info

General Information 17 17
2 General Information
2.1 Introduction
The intended use of the 350B Temperature Controllers is to precisely control the
temperature of a thermo-electric (TE) cooler in a closed loop system using a variety of
possible temperature sensors as the feedback. They offer a combination of features,
performance, and value that is unmatched by other laser diode temperature controllers.
Three operating modes are user selectable: constant R (thermistor), constant T
(thermistors), or constant ITE (TE cooler), while delivering output power up to 55 Watts.
Quiet, safe and stable output current results from a P-I-D control circuitry with complete
flexibility for adjustment through the Newport LDD/TEC Application software
(included) or user developed programs. The PID control algorithm is implemented to
achieve optimal stability and settling performance along with an ITE current limit setting
to protect TE coolers from damage, regardless of operating mode.
The P-I-D control loop renders performance for fast settling onto a low noise, bipolar
current output in three operating modes: 1) constant thermistor resistance, 2) constant
Temperature as monitored by a thermistor, or 3) constant peltier-cooler (thermo-electric)
temperature. A user adjustable TE-cooler current limit setting unconditionally protects
the TE modules from damage by excessive drive current independent of the operating
mode. The Model 350B temperature controller is compatible with thermistors.
Temperature readings are displayed in °C as an option when using thermistors. A USB
interface is standard feature in all models, permitting interfacing to a PC to control from
Newport’s LDD/TEC Application software or user’s developed application using the
included LabVIEW drivers.
Additional Benefits
1. Preset display allows adjustable operating setpoint before switching the output on.
2. Low noise, bipolar current output.
3. Wide TEC temperature range from -50 to +150°C.
4. Analog interface provides remote control capability.

18 General Information
Specifications
Model 350B
Output
Type
Bipolar, constant current source
TEC Control Loop Type
Hybrid P-I-D
Maximum Current (A)
±5
Compliance Voltage (V)
11
Available Output Power (W)
55
Accuracy (mA)
±9
Resolution (mA)
0.084
Ripple/Noise (mA rms)
<0.03
Current Limit
Range (A)
0–5.05
Accuracy (mA)
±9
Resolution (mA)
0.084
Stability
Short-Term Stability (1 h)
0.001°C
Long-Term Stability (24 h)
0.005°C
Display
Range
Temperature (oC)
-50.0 to +150.0°C
Resistance (10 µA) (k)
0.1–200.0
Resistance (100 µA) (k)
0.01–20.00
TE Current (A)
-5.00 to +5.00
Resolution
Temperature
0.1°C
Resistance (10 µA) ()
100
Resistance (100 µA) ()
10
TE Current (mA)
10
Accuracy
Temperature
±0.1°C
Resistance (10 µA)
±100
Resistance (100 µA)
±10
TE Current (mA)
±10

General Information 19 19
Temperature Sensors
Sensor Type
Thermistor
NTC 2-wire
Temperature Control Resolution
0.01°C
Temp. Sensor Control Accuracy (at 25°C)
±0.2°C
Sensor Bias
10/100 µA
Overall Specifications
Voltage Requirements
~100/120/220/240 VAC +/-10%, 50–60Hz
Power Requirements
325B MAX POWER = 60W
350B MAX POWER = 130W
Chassis Ground
4 mm banana jack
Size (H x W x D) [in. (mm)]
3.5 (88) x 8.5 (215) x 12.6 (320)
Weight [lb (kg)]
8.9 (4.05)
Operating Temperature
0°C to 40°C
(<90% humidity non-condensing)
Operating Altitude
3000 m (10,000 feet)
Storage Temperature
-29°C to + 60°C
Storage Relative Humidity
<85% humidity non-condensing
Safe Use Environment
Indoor
Electrical Class
1
Pollution Degree
2
Transient Overvoltage Category
2
Connectors
Output Connectors TE Module and Sensor
15-pin female D-sub
Analog Output
BNC
USB Connector
Type B
Table 1 Specifications Tables