Newport 325B, 350B User Manual

300B Series Temperature Controllers

User’s Manual

ii

EU Declaration of Conformity

We declare that the accompanying product, identified with the mark,
complies with requirements of the Electromagnetic Compatibility Directive,
89/336/EEC and the Low Voltage Directive 73/23/EEC.

Model Number: Model 325B and 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: 1997+A1+A2 “Electrical equipment for measurement,
control and laboratory use – EMC requirements”

This equipment meets the CISPR 11 Class A Group 1 radiated and conducted
emission limits.

BS EN 61000-3-2:2001, Harmonic current emissions, Class A

BS EN 61000-3-3:2002, Voltage fluctuations and flicker

IEC 61010-1:2001 second edition “Safety requirements for electrical
equipment for measurement, control and laboratory use”

Alain Danielo Dan Dunahay
VP European Operations Director of Quality Systems
Zone Industrielle 1791 Deere Avenue
45340 Beaune-la-Rolande, France Irvine, Ca. USA

Preface 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 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 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. 41247-01, Rev. B

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.

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

Technical Support Contacts

North America & Asia Europe

Newport Corporation Service Dept.

1791 Deere Ave. Irvine, CA 92606
Telephone: [phone]

Telephone: [phone] x31694

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
warranty period to obtain a Return Material Authorization Number (RMA#).
Return the product to Newport Corporation, freight prepaid, clearly marked with the
RMA# and we will either repair or replace it at our discretion. Newport is not
responsible for damage occurring in transit and is not obligated to accept products
returned without an RMA#.

Newport/MICRO-CONTROLE S.A.

Zone Industrielle
45340 Beaune la Rolande, FRANCE

Telephone: [phone]

within the

E-mail: [e-mail]

When calling Newport Corporation, please provide the customer care representative
with the following information:

••••

Your Contact Information

••••

Serial number or original order number

••••

Description of problem (i.e., hardware or software)

To help our Technical Support Representatives diagnose your 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 you seen this problem before? If so, how often?

••••

Can the system continue to operate with this problem? Or is the system non-

operational?

••••

Can you identify anything that was different before this problem occurred?

vi

Table of Contents

EU Declaration of Conformity............................................................... ii

Warranty................................................................................................ iii

Technical Support Contacts ................................................................... v

Table of Contents
List of Figures
List of Tables

......................................................................... vi

............................................................................. viii

................................................................................. ix

1 Safety Precautions 11

1.1 Definitions and Symbols ............................................................ 11

1.1.1 CSA Mark with “C” and “US” Indicators .......................11

1.1.2 European Union CE Mark ...............................................11

1.1.3 Alternating voltage symbol .............................................11

1.1.4 On ....................................................................................12

1.1.5

Off....................................................................................12

1.1.6 Fuses ................................................................................12

1.1.7

Frame or Chassis .............................................................12

1.1.8 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

2 General Information 17

2.1 Introduction ................................................................................ 17

2.2 Accessories ................................................................................. 20

3 Getting 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

Preface vii

4 System Operation 25

4.1 Front Panel.................................................................................. 25

4.1.1 AC Power Switch ............................................................25

4.1.2 Analog Output .................................................................25

4.1.3 Mode Switch....................................................................26

4.1.4 Output Section .................................................................26

4.1.5 Status ...............................................................................27

4.1.6 Display.............................................................................27

4.1.7 Control Knob ...................................................................28

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

5 Computer Interfacing 31

5.1 Memory ...................................................................................... 31

5.2 Commands and Queries.............................................................. 31

6 Software Application 45

6.1 Overview .................................................................................... 45

6.2 Connection.................................................................................. 45

6.3 General Usage ............................................................................ 46

6.3.1 LDD Tab..........................................................................46

6.3.2 TEC Tab ..........................................................................47

6.4 Menu Structure ........................................................................... 47

7 Principles 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 Working With IC Sensors .......................................................... 52

7.3.1 AD590 Series IC Sensors ................................................52

7.3.2 LM135/335 Series IC Sensors.........................................53

7.4 Using Thermo-Electric Modules ................................................ 53

7.5 Mounting Considerations ........................................................... 54

viii

7.6 PID Tuning ................................................................................. 55

7.6.1 PID Control Loop .......................................................55

7.6.2 P Loop .............................................................................56

7.6.3 PI Loop ............................................................................56

7.6.4 PID Loop .........................................................................57

7.7 Model 300B Series Setup ........................................................... 58

7.7.1 Rack Mounting Model 300B Series Units.......................58

7.7.2 Model 300B Series Operating Checklist .........................58

8 Maintenance 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 CSA mark with “C” and “US” Indicators ................................ 11

Figure 2 CE Mark................................................................................... 11

Figure 3 Alternating Voltage Symbol .................................................... 11

Figure 4 On Symbol ............................................................................... 12

Figure 5 Off Symbol............................................................................... 12

Figure 6 Fuse Symbol............................................................................. 12

Figure 7 Frame or Chassis Terminal Symbol......................................... 12

Figure 8 Protective Conductor Terminal ................................................ 13

Figure 9 AC Receptacle Warning Label................................................. 14

Figure 10 Locations of warnings on the rear panel .................................. 16

Figure 11 Front Panel Layout (325B shown) ........................................... 25

Figure 12 Rear Panel ................................................................................ 28

Figure 13 Application front panel (TEC Tab) .......................................... 45

Figure 14 Application front panel when communicating (LDD Tab)...... 46

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

Preface ix

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

This page is intentionally left blank.

1 Safety Precautions

1.1 Definitions and Symbols

The following terms and symbols are used in this documentation and also
appear on the Model 300B Series Temperature Controllers where safety­related issues occur.

1.1.1 CSA Mark with “C” and “US” Indicators

Figure 1 CSA mark with “C” and “US” Indicators

The presence of the CSA mark with “C” and “US” indicates that it has been
designed, tested and certified as complying with all applicable U.S. and
Canadian safety standards.

1.1.2 European Union CE Mark

Figure 2 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.

1.1.3 Alternating voltage symbol

This international symbol implies an alternating voltage or current.

11

Figure 3 Alternating Voltage Symbol

12 Safety Precautions

1.1.4 On

Figure 4 On Symbol

The On Symbol in the figure above represents a power switch position on the
Model 300B Series Temperature Controllers. This symbol represents a
Power On condition.

1.1.5 Off

Figure 5 Off Symbol

The Off Symbol in the figure above represents a power switch position on the
Model 300B Series Temperature Controllers. This symbol represents a
Power Off condition.

1.1.6 Fuses

The fuse symbol in the figure above identifies the fuse location on the Model
300B Series Temperature Controllers.

1.1.7 Frame or Chassis

Figure 7 Frame or Chassis Terminal Symbol

This symbol identifies the frame or chassis terminal.

Figure 6 Fuse Symbol

Safety Precautions 13

1.1.8 Protective Conductor Terminal

Figure 8 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 your attention to important information
regarding your safety, the safety and preservation of your equipment or an
important tip.

Situation has the potential to cause bodily harm or death.

Situation has the potential to cause damage to property or equipment.

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.

WARNING

CAUTION

NOTE

•••• 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

14 Safety Precautions

locations in the service instructions or on the equipment. Only qualified
service personnel should replace fuses.

•••• 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 9 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 300B Series

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 device.

Safety Precautions 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 300B Series 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 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

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 300B Series 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 your
mains voltage. Follow directions in section 4.2.4 to properly set tumbler.

CAUTION

There are no user serviceable parts inside the Model 300B Series
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.

All units are factory preset to operate at 108-132VAC, 60Hz

CAUTION

16 Safety Precautions

r

1.3 Location of Warnings

1.3.1 Rear Panel

Electrical Hazard

(Series 325B shown)

MAX Powe

Fuse info

Frame or Chassis

Terminal

Figure 10 Locations of warnings on the rear panel

2 General Information

2.1 Introduction

The intended use of the 300B Series 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 (IC sensors), or constant ITE (TE cooler), while delivering high output
power from 60 Watts to 130 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 an IC sensor, or 3)
constant peltier-cooler (thermo-electric) temperature. A user adjustable TE­cooler current limit setting unconditionally protects the TE modules from
damage by excessive drive current independent of the operating mode. The
Model 300B Series of temperature controllers are compatible with
thermistors, AD590 and LM135/335 Series IC temperature sensors.
Temperature readings are displayed in °C when using IC sensors and
provided 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 lets you adjust operating setpoint before switching the
output on

2. Low noise, bipolar current output

3. Wide TEC temperature range from -50 to +150°C

17

18 General Information

4. Analog interface provides remote control capability

Specifications

Model 325B Model 350B

Output

Type Bipolar, constant current source

TEC Control Loop Type Hybrid P-I-D

Maximum Current (A) ±2.5 ±5

Compliance Voltage (V) 7 11

Available Output Power (W) 17.5 55

Accuracy (mA) ±5 ±9

Resolution (mA) 0.042 0.084

Ripple/Noise (mA rms) <0.03 <0.03

Current Limit

Range (A) 0–2.52 0–5.05

Accuracy (mA) ±5 ±9

Resolution (mA) 0.042 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) (kΩ)

Resistance (100 µA) (kΩ)

TE Current (A) -2.50 to +2.50 -5.00 to +5.00

Resolution

Temperature 0.1°C

Resistance (10 µA) (Ω)

Resistance (100 µA) (Ω)

TE Current (mA) 10

Accuracy

Temperature ±0.1°C

Resistance (10 µA)

Resistance (100 µA)

TE Current ±10 ±10

0.1–200.0

0.01–20.00

100

10

±100Ω

±10Ω

General Information 19

Temperature Sensors

Sensor Type

Temperature Control Resolution 0.01°C 0.1°C 0.1°C 0.1°C

Temp. Sensor Control Accuracy (at 25°C) ±0.2°C ±0.5°C ±1.0°C ±3.0°C

Sensor Bias 10/100 µA +12 V 1 mA 1 mA

Thermistor
NTC 2-wire

AD592CN LM135AH LM335AZ

Overall Specifications

Voltage Requirements ~100/120/220/240 VAC +/-10%, 50–60Hz

Power Requirements

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

Operating Altitude 3000 m (10,000 feet)

Storage Temperature

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

325B MAX POWER = 60W
350B MAX POWER = 130W

0°C to 40°C
(<90% humidity non-condensing)

-29°C to + 60°C

Table 1 Specifications Tables

20 General Information

2.2 Accessories

The Model 300B Series Temperature Controllers come with a line cord for
connection to AC power. To order accessories use the following part
numbers:

Model Description

300-02 Temperature Controller Cable

300-04 TEC/Mount Cable

300-16 10.0 kW Thermistor (±0.2°C)

300-22 AD592CN IC Sensor (-45°C to +125°C Range)

35-RACK Rack Mount Kit