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Troubleshooting
Related Manuals for ILX Lightwave LDT-5500B Series
Summary of Contents for ILX Lightwave LDT-5500B Series
- Page 1 User’s Guide Temperature Controller LDT-5500B Series ILX Lightwave Corporation · 31950 Frontage Road · Bozeman, MT, U.S.A. 59715 · U.S. & Canada: 1-800-459-9459 · International Inquiries: 406-556-2481 · Fax 406-586-9405 · ilx.custhelp.com www.ilxlightwave.com 70019907 May 2011...
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Page 3: Table Of Contents
USB ............8 Introduction to the LDT-5500B Series Front Panel ..... 9 Adjustments . - Page 4 Error Messages ..........19 Chapter 4 Command Reference LDT-5500B Series Device-Dependent Commands ..... 23 Chapter 5 Maintenance and Troubleshooting Calibration Overview .
- Page 5 Two Point Calibration Method ........54 05_11 LDT-5500B Series...
- Page 6 TA B L E O F C O N T E N T S LDT-5500B Series...
- Page 7 Figure 2.1 LDT-5500B Series Front Panel ..... 9 Figure 2.2 LDT-5500B Series Back Panel ....13 Figure 2.3 Back Panel TEC Connector .
- Page 8 L I S T O F F I G U R E S LDT-5500B Series...
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Page 9: Safety Information And The Manual
• Prolonged storage under adverse conditions • Failure to perform intended measurements or functions If necessary, return the instrument to ILX Lightwave, or authorized local ILX Lightwave distributor, for service or repair to ensure that safety features are maintained (see the contact information on page xi). -
Page 10: Safety Marking Symbols
Terminal Terminal On: In position of a bistable push control. Off: Out position of a bistable push control. The slash (I) only denotes that mains are on. The circle (O) only denotes that mains are off. viii LDT-5500B Series... - Page 11 Returning an Instrument If an instrument is to be shipped to ILX Lightwave for repair or service, be sure to: Obtain a Return Authorization number (RA) from ILX Customer Service.
- Page 12 If the instrument is damaged, file a claim with the carrier. The factory will supply you with a quotation for estimated costs of repair. You must negotiate and settle with the carrier for the amount of damage. LDT-5500B Series...
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Page 13: Comments, Suggestions, And Problems
WA R R A N T Y Comments, Suggestions, and Problems To ensure that you get the most out of your ILX Lightwave product, we ask that you direct any product operation or service related questions or comments to ILX Lightwave Customer Support. - Page 14 WA R R A N T Y in a container with at least 3 inches (7.5 cm) of compressible packaging material on all sides. We look forward to serving you even better in the future! LDT-5500B Series...
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Page 15: Introduction And Specifications
LDT-5500B Series and performs the non-linear conversion of thermistor resistance to temperature based on user-defined constants. You can configure the LDT-5500B Series to operate with a wide variety of thermistor temperature sensors and TE modules, as well as AD590 series and LM335 series temperature sensors. -
Page 16: Available Options And Accessories
I N T R O D U C T I O N A N D S P E C I F I C A T I O N S C H A P T E R Product Overview Available Options and Accessories Options and accessories available for the LDT-5500B Series Temperature Controller include the following: DESCRIPTION MODEL NUMBER Single Rack mount kit ... -
Page 17: Specifications
TEMPERATURE SENSOR Thermistor 2-wire NTC IC Sensors AD590/LM335 RTD Sensor 2-wire RTD 100, 500, or 1 k 10/100 A Thermistor Sensing Current IC Sensor Bias AD590 = 8V; LM335 = 0.6 mA 250-450,000 Usable Thermistor Range 05_11 LDT-5500B Series ... - Page 18 +0.05% of FS TE Current Range -4.00 to 4.00A: LDT-5525B -5.00 to 5.00A: LDT-5545B TE Current Resolution 0.01A: LDT-5525B 0.01A: LDT-5545B TE Current Accuracy +0.03A: LDT-5525B +0.03A: LDT-5545B OUTPUT CONNECTOR TEC I/O 15 pin, D-sub, rear panel LDT-5500B Series...
- Page 19 Our goal is to make the best laser diode instrumentation available anywhere. To achieve this, we need your ideas and comments on ways we can improve our products. We invite you to contact us at any time with your suggestions. 05_11 LDT-5500B Series ...
- Page 20 I N T R O D U C T I O N A N D S P E C I F I C A T I O N S C H A P T E R Specifications LDT-5500B Series...
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Page 21: Operation
C H A P T E R PERATION This chapter describes how to install, adjust, and operate the LDT-5500B Series Temperature Controller. It is divided into sections covering installation, familiarization and adjustment, and normal operating procedures. This chapter also gives an overview of the LDT-5500B's front panel features, and it presents a guide to quickly familiarize the user with the front panel operations. -
Page 22: Power-Up Sequence
C H A P T E R Power-Up Sequence Power-Up Sequence With the LDT-5500B Series Temperature Controller connected to an AC power source, pressing the POWER switch will supply power to the instrument and start the power up sequence. During the power-up sequence, the following takes place. -
Page 23: Introduction To The Ldt-5500B Series Front Panel
Temperature Controller hardware. Each of the labeled areas on the front panel is described in this chapter. Refer to Figure 2.1 for the following discussions of the LDT-5500B Series Temperature Controller front panel sections. The key words are in capital letters for quick identification. -
Page 24: Parameters
LIM I (TE current limit), LIM T (temperature limit), GAIN (sensor feedback amplifier gain) and CONST (sensor calibration values). The LDT-5500B Series will limit the I TE output to the LIM I value, regardless of the set point or control mode. -
Page 25: Thermistor Sensor Cal
O P E R A T I O N C H A P T E R Introduction to the LDT-5500B Series Front Panel THERMISTOR SENSOR CAL These are the constants of the Steinhart-Hart equation that the user enters to calibrate the TEC for thermistor temperature conversions. The Steinhart-Hart equation is used to derive temperature from the non-linear resistance of an NTC (Negative Temperature Coefficient) thermistor. -
Page 26: Error Indicators
O P E R A T I O N C H A P T E R Introduction to the LDT-5500B Series Front Panel Conditions Which Will Automatically Disable the OUTPUT Temperature Limit Sensor Open (While Output On) TEC Module Open (While Output On) -
Page 27: Back Panel Controls And Connections
O P E R A T I O N C H A P T E R Back Panel Controls and Connections Figure 2.2 LDT-5500B Series Back Panel Back Panel Controls and Connections Refer to Figure 2.2 for the following discussions of back panel controls and connectors. -
Page 28: Tec Connector
See Chapter 3 for driver installation information. TEC Grounding Considerations The TEC outputs of the LDT-5500B Series are isolated from chassis ground, allowing either output terminal to be grounded at the user's option. Note: For the TEC connector, if any one terminal pin is grounded, then no other terminal pin should be grounded;... -
Page 29: General Operating Procedures
(refer to the back panel for the correct ratings). Turn on the LDT-5500B Series Temperature Controller. The OUTPUT stage will be disabled at power up and the unit will automatically configure its parameters to the state which existed when the power was last shut off. -
Page 30: Resistance Mode Operation
(refer to the back panel for the correct ratings). Turn on the LDT-5500B Series Temperature Controller. The OUTPUT stage will be disabled at power up and the unit will automatically configure its parameters to the state which existed when the power was last shut off. -
Page 31: Remote Operation
The following sections detail the fundamentals of operating the LDT-5500B Temperature Controller through the USB interface. To begin using the USB port on the LDT-5500B Series Temperature Controller, please install the Virtual Com Port Driver which is available on the companion CD or from our website (www.ilxlightwave.com). -
Page 32: Command Syntax
Each USB command or query must always be terminated with the new line character: '\n' or 0x0A. Boolean Parameter Values Boolean values (0 and 1) are used to represent On/Off or True/False. Command Timing and Completion All commands are executed in a sequential manner. LDT-5500B Series... -
Page 33: Error Messages
A response of 0 (false) indicates that there is no error. A response of 1 (true) indicates that an error is currently present, or the output was previously disabled due to this error such as a TE OPEN error. 05_11 LDT-5500B Series ... - Page 34 R E M O T E O P E R A T I O N C H A P T E R Error Messages LDT-5500B Series...
- Page 35 EFERENCE This chapter is a guide to all of the commands for the LDT-5500B Series Temperature controller. This chapter is divided into two parts. The first part contains an overview of the remote commands used by the LDT-5500B Series Temperature controller.
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Page 36: Command Reference
Used to set the TEC constant T (temperature) set point TEC:T NONE Returns the TEC measured temperature value TEC:T? NONE Used to return the current status of the temperature limit TEMP_LIMIT? error NONE Returns the model of the instrument (5525B or 5545B) MODEL? LDT-5500B Series... -
Page 37: Ldt-5500B Series Device-Dependent Commands
C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands LDT-5500B Series Device-Dependent Commands The following pages contain a reference for the commands of the LDT-5500B Temperature Controller. - Page 38 C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands FET_OVER_POWER? RONT ANEL EMOTE The FET_OVER_POWER? query returns the current status of the Overpower Pass Elements error.
- Page 39 C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands TE_OPEN? RONT ANEL EMOTE The TE_OPEN? query returns the current status of the sensor open error.
- Page 40 C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands TEC:C3 RONT ANEL EMOTE TEC:C3? The TEC:C3 command sets the TECs Steinhart-Hart equation constant C3.
- Page 41 Controller is ready for a value to be entered during the calibration cycle. Parameters None. Notes This query can be used to poll the LDT-5500B Series Temperature Controller after the unit has entered into remote calibration mode. If the response is 1, the LDT-5500B is ready to receive a calibration value. Examples "TEC:CAL?”...
- Page 42 C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands TEC:LIM:ITE RONT ANEL EMOTE TEC:LIM:ITE? The TEC:LIM:ITE command sets the TE current limit value.
- Page 43 C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands TEC:MODE:R RONT ANEL EMOTE The TEC:MODE:R command selects constant thermistor resistance reference mode.
- Page 44 C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands TEC:MODE? RONT ANEL EMOTE The TEC:MODE? query returns the selected TEC control mode.
- Page 45 C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands TEC:SEN? RONT ANEL EMOTE The TEC:SENsor? query is used to read back the SENSOR SELECT switch position value.
- Page 46 C O M M A N D R E F E R E N C E C H A P T E R LDT-5500B Series Device-Dependent Commands TEC:T RONT ANEL EMOTE TEC:T? The TEC:T command sets the TECs constant temperature set point.
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Page 47: Maintenance And Troubleshooting
C H A P T E R AINTENANCE AND ROUBLESHOOTING This chapter describes how to maintain and troubleshoot the LDT-5500B Series Temperature Controller. Included are sections covering calibration, disassembly, and troubleshooting. THE SERVICE PROCEDURES DESCRIBED IN THIS CHAPTER ARE FOR USE BY QUALIFIED PERSONNEL. -
Page 48: Recommended Equipment
Controller may be calibrated at its intended use temperature if this is within the specified operating temperature range of 0 to 40 Warm Up The LDT-5500B Series Temperature Controller should be allowed to warm up for at least 1 hour before calibration. ... -
Page 49: Calibration Adjustments
A) or 40k (for 10 A) metal film resistor to the sensor input of the LDT-5500B Series Temperature Controller (pins 7 and 8). Enter the sensor calibration mode by pushing the parameter “SET” and display “SELECT” buttons at the same time. After this, the display will indicate the sensor resistance in k... -
Page 50: Remote Thermistor Calibration
A) or 40k (for 10 A) metal film resistor to the sensor input of the LDT-5500B Series Temperature Controller (pins 7 and 8). Enter the sensor calibration mode by sending the command “TEC:CAL:SEN”. After this, the display will indicate the sensor resistance in k. Allow the measurement to settle for about three seconds. -
Page 51: Ad590 Sensor Calibration
Connect a precision 20 k metal film resistor and a precision ammeter in series at the sensor input of the LDT-5500B Series Temperature Controller. (pins 7 and 8) Enter the sensor calibration mode by pushing the display SELECT and parameter SET buttons at the same time. -
Page 52: Remote Ad590 Sensor Calibration
C2 to 1.00. Connect a precision 20 k metal film resistor and a precision ammeter in series at the sensor input of the LDT-5500B Series Temperature Controller (pins 7 and 8). Enter the sensor calibration mode by sending the command “TEC:CAL:SEN”. After this, the TEC display will indicate sensor reference current in A. -
Page 53: Lm335 Sensor Calibration
Connect a precision 4 k metal film resistor and a precision voltmeter in parallel at the sensor input of the LDT-5500B Series Temperature Controller (pins 7 and 8). Enter the sensor calibration mode by pushing the display SELECT and parameter SET buttons at the same time. -
Page 54: Remote Lm335 Sensor Calibration
C2 to 1.00. Connect a precision 4 k metal film resistor and a precision voltmeter in parallel at the sensor input of the LDT-5500B Series Temperature Controller (pins 7 and 8). Enter the sensor calibration mode by sending the command “TEC:CAL:SEN”. After this, the TEC display will indicate sensor reference current in mV. -
Page 55: Ite Current Calibration
Enter the calibration mode by pushing the display SELECT and mode SELECT buttons. This will put the LDT-5500B Series into ITE calibration mode. Wait for three seconds for the output to settle to about 3 Amps (LDT-5525B); 4 Amps (LDT-5545B). -
Page 56: Remote Ite Current Calibration
LDT-5545B, the set points are 4A, -4A, 4A, 1A, -1A and -4A. After the last set point is entered, the LDT-5500B Series Temperature Controller’s front panel will go blank while the instrument calibrates the ITE set point and current limits. -
Page 57: Troubleshooting
C H A P T E R Troubleshooting Troubleshooting This section is a guide to troubleshooting the LDT-5500B Series Temperature Controller. Some of the more common symptoms are listed here, and the appropriate troubleshooting actions are given. We recommend that the user start at the beginning of this guide. - Page 58 M A I N T E N A N C E A N D T R O U B L E S H O O T I N G C H A P T E R Troubleshooting LDT-5500B Series...
- Page 59 A P P E N D I X TEINHART QUATION This appendix is the ILX Lightwave Application Note “Thermistor Calibration and the Steinhart-Hart Equation”. LDT-5500B Series ...
- Page 60 C H A P T E R LDT-5500B Series...
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Page 61: Appendix B Sensing Current And Thermistor Selection
To correctly set the SENSOR SELECT switch you must understand how the thermistor and the LDT-5500B Series Temperature Controller interact, and how temperature range and resolution values are inherent in the nature of thermistors. -
Page 62: Figure B.1 Thermistor Temperature Range
C H A P T E R Thermistor Range signal is available to the thermistor inputs of the LDT-5500B Series. The LDT- 5500B Series's measurement system will over-range when the input voltage exceeds about 4.5 volts. Figure B.1 graphically shows the lower temperature and upper voltage limits for a typical 10 K thermistor. -
Page 63: Temperature Resolution
You must also consider measurement resolution since the measurement resolution decreases as the thermistor temperature increases. A temperature controller (such as the LDT-5500B Series) has a limited measurement resolution. A temperature change of one degree centigrade will be represented by a greater resistance increase at a lower temperature than at a higher temperature because of the non-linear resistance of the thermistor. - Page 64 If you require a different temperature range or the accuracy you need can't be achieved with either switch setting, select another thermistor. Thermistor temperature curves, supplied by the manufacture, show the resistance verses temperature range for many other thermistors. ILX Lightwave Corporation will also offer help for your specific application. ...
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Page 65: Appendix C Ad590 And Lm335 Sensor Calibration
ALIBRATION The LDT-5500B Series Temperature Controller uses two constants (C1 and C2) for calibrating linear thermal sensing devices, such as the AD590, and the LM335. C1 is used as the linear or zero offset value, and C2 is used as the slope or gain adjustment. -
Page 66: Lm335 Sensor
C H A P T E R = C1 + (C2 * T - where C1 and C2 are the constants stored by the user in the LDT-5500B Series Temperature Controller for the AD590. The AD590 measurement is calibrated, at the factory, with C2 = 1 and C1 = 0 (nominal values). - Page 67 Controller, is first calibrated as follows: = C1 + (C2 * T - where C1 and C2 are the constants stored by the user in the LDT-5500B Series Temperature Controller for the LM335. When the LDT-5500B Series is shipped from the factory, the LM335 measurement system is calibrated, but the sensor (C1 and C2) is not.
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Page 68: One Point Calibration Method
Place the sensor at an accurately known and stable temperature, T . Connect the sensor to pins 7 and 8 of the LDT-5500B Series's 15-pin connector. Set the LDT-5500B Series for normal constant temperature (T mode) operation. Allow the LDT-5500B Series... - Page 69 = U + (V * C1) and C2 = V * C2 Replace C1 with C1 by selecting the C1 parameter and entering the new C1 value. Replace C2 with C2 by selecting the C2 parameter and entering the new C2 value. 05_11 LDT-5500B Series ...
- Page 70 C H A P T E R LDT-5500B Series...