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ILX Lightwave LDT-5525B
Temperature Controller
A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s .
• C r i t i c a l a n d e x p e d i t e d s e r v i c e s
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Table of Contents
Troubleshooting
Related Manuals for Newport ILX Lightwave LDT-5525B
Summary of Contents for Newport ILX Lightwave LDT-5525B
- Page 1 ILX Lightwave LDT-5525B Temperature Controller In Stock Used and in Excellent Condition Buy Today! https://www.artisantg.com/53589-2 A l l t r a d e m a r k s , b r a n d n a m e s , a n d b r a n d s a p p e a r i n g h e r e i n a r e t h e p r o p e r t y o f t h e i r r e s p e c t i v e o w n e r s .
- Page 2 User’s Guide Temperature Controller LDT-5500B Series 70019907 November 2017...
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Page 4: Table Of Contents
T able of Contents Safety and Warranty Information ..............5 Chapter 1 : Introduction and Specifications ..........9 Product Overview ....................... 9 Features of the LDT-5500B Series include: ..............9 Available Options and Accessories ................10 Specifications ...................... - Page 5 Chapter 3 : Remote Operation ..............23 USB Driver Installation ..................... 23 Command Syntax ..................... 23 Letters ..........................23 White Space ........................23 Command Termination ....................24 Boolean Parameter Values ..................... 24 Command Timing and Completion ................. 24 Error Messages ......................
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Page 6: List Of Figures
List of Figures LDT-5500B Series Front Panel ............14 Figure 2.1 LDT-5500B Series Back Panel............18 Figure 2.2 Back Panel TEC Connector ..............19 Figure 2.3 Thermistor Temperature Range ............50 Figure B.1 AD590 Nonlinearity ................54 Figure C.1 November 2017 70019907 LDT-5500B Manual... -
Page 7: List Of Tables
List of Tables Accessories List .................. 10 Table 1.1 Specifications ..................11 Table 1.2 SENSOR SELECT Switch Positions ........... 18 Table 2.1 Remote Command Summary Reference List ........25 Table 4.1 Recommended Calibration Equipment List ......... 36 Table 5.1 Troubleshooting Reference List ............45 Table 5.2 Thermistor Sensitivity ................ -
Page 8: Safety And Warranty Information
Safety and Warranty Information The Safety and Warranty Information section provides details about cautionary symbols used in the manual, safety markings used on the instrument, and the information about the Warranty including Customer Service contact information. Safety Information and the Manual Throughout this manual, the words Caution and Warning indicate potentially dangerous or hazardous situations which, if not avoided, could result in death, serious or minor injury, or damage to the product. -
Page 9: Safety Marking Symbols
Safety Symbols This section describes the safety symbols and classifications. Technical specifications including electrical ratings and weight are included within the manual. See the Table of Contents to locate the specifications and other product information. The following classifications are standard across all ILX Lightwave products: ... -
Page 10: Warranty
Warranty ILX Lightwave warrants this instrument to be free from defects in material and workmanship for a period of one year from the date of shipment. During the warranty period, ILX Lightwave will repair or replace the unit, at our option, without charge. Limitations This warranty does not apply to fuses, lamps, defects cause by abuse, modifications, or use of the product for which it was not intended. -
Page 11: Comments, Suggestions, And Problems
Comments, Suggestions, and Problems To ensure getting the most out of ILX Lightwave products, direct any product operation, service related questions, or comments to ILX Lightwave Customer Support. Contact ILX Lightwave in whatever way is most convenient: Phone (800) 459-9459 or (406) 586-1244 (406) 586-9405 Email sales@ilxlightwave.com... -
Page 12: Chapter 1 : Introduction And Specifications
Chapter 1 : Introduction and Specifications This chapter contains operation and maintenance information for the LDT-5500B Series Temperature Controller: Product Overview Specifications Product Overview The LDT-5500B Series Temperature Controller is a microprocessor-based, precision thermoelectric temperature controller designed for temperature control of laser diodes, detectors and other temperature sensitive devices. -
Page 13: Available Options And Accessories
RTD Temperature Sensor Converter TSC-599 Unipolar Control Adapter UCA-350 Not a complete list, visit website or contact sales staff for full list. Please contact ILX Lightwave or visit www.newport.com/ilxlightwave for information on additional options for applications. November 2017 70019907 LDT-5500B Manual... -
Page 14: Specifications
Specifications Specifications Table 1.2 LDT-5525B LDT-5545B TEMPERATURE CONTROL OUTPUT Temperature Control Range C to 199.9 Temperature Setpoint Resolution Temperature Setpoint Accuracy Thermistor ±0.2 AD590 ±0.2 LM335 ±0.2 Short Term Stability (1 hour) <±0.006 Long Term Stability (24 hours) <±0.01 Temperature Coefficient TEC OUTPUT Type Bipolar current source... - Page 15 Temperature Resolution 10 A thermistor 100 A thermistor AD590 LM335 Accuracy ±0.5 C typical Thermistor Resistance Range 10 A thermistor 2.5 to 450k 100 A thermistor 0.25 to 45.0k Thermistor Resistance Resolution 10 A thermistor 0.1 k 100 A thermistor 0.01 k...
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Page 16: Chapter 2 : Operation
Chapter 2 : Operation 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 includes: Front Panel Features ... -
Page 17: Usb
The LDT-5500B may be controlled by PC using USB. The USB Type B connector is located on the rear panel above the sensor select switch. See the Figure 2.2. The USB drivers (from either the ILX Lightwave website or from the USB Flash Drive/CD) must be installed prior to making USB connection. -
Page 18: Parameters
display SELECT switch will cycle the display from ITE to temperature to resistance (with thermistor sensors only) to set point. When in ITE mode, the set point will be TE current in Amps. When in R mode, the set point will be thermistor resistance in k. R mode is not available if the back panel SENSOR SELECT switch is set to LM335 or AD590. -
Page 19: Parameter Setup
Parameter Setup The parameter SELECT button is used to view parameters. Repeatedly pressing the parameter SELECT switch will cycle through the parameters. When a parameter is selected for viewing, its value will remain on the display for three seconds. The parameter value can be changed by pressing the SET button and turning the adjust knob. -
Page 20: Output And Control Mode
Output and Control Mode The MODE section contains the mode SELECT button, which is used to select the instrument control mode. Repeatedly pressing the mode SELECT button cycles through the current (I TE), sensor reference (R), or temperature (T) control modes. The LED indicators show the selected mode. The MODE section also contains the OUTPUT button and indicator. -
Page 21: 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. There are no user serviceable parts in the instrument, including the external fuses in the AC power entry module. -
Page 22: Tec Connector
TEC Connector In the lower right hand corner, when facing the back panel, there is a 15-pin D-connector for the TEC MODULE. This connector is used for the input and output connections, as shown by the pin-out diagram of Figure 2.3. ILX TEC interconnect cables connect directly to the 15-pin D- connector. -
Page 23: General Operating Procedures
General Operating Procedures The following sections present some guidelines for operation, as well as some common operating procedures. Warm-Up and Environmental Considerations Operate the LDT-5500B Series Temperature Controller at an ambient temperature in the range of 0 to +40°C. Storage temperatures should be in the range of -40 to +70°C. To achieve rated accuracy, let the LDT-5500B Series Temperature Controller warm up for about 1 hour before use. -
Page 24: Resistance Mode Operation
Resistance Mode Operation a. Plug the LDT-5500B Series Temperature Controller into an AC power source supplying the correct voltage and frequency for the unit under operation (refer to the back panel for the correct ratings). b. 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 25 November 2017 70019907 LDT-5500B Manual...
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Page 26: Chapter 3 : Remote Operation
Chapter 3 : Remote Operation This chapter details the fundamentals of operating the LDT-5500B Temperature Controller through the USB interface. USB Driver Installation Command Syntax 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. -
Page 27: Command Termination
Command Termination 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. Error Messages Error messages are reported using the available commands to query for individual errors such as TEMPERATURE LIMIT, SENSOR OPEN, TE CURRENT LIMIT, and TE OPEN. -
Page 28: Chapter 4 : Command Reference
Chapter 4 : Command Reference This chapter is a guide to all the commands for the LDT-5500B Series Temperature Controller. Overview of Remote Commands List of Commands in Alphabetical Order Table 4.1 shows the format for the device command descriptions in this chapter. The commands that emulate local (front panel) operation are denoted by “FRONT PANEL”... - Page 29 Sets the constant sensor resistance; only available in constant R mode TEC:R NONE Returns the measured temperature sensor value TEC:R? NONE Returns the position of the SENSOR SELECT switch TEC:SEN? NONE Returns the constant ITE (TEC current) set point TEC:SET:ITE? Returns the constant R (temperature sensor value) set point NONE TEC:SET:R?
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Page 30: 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. This reference contains useful information for both local and remote operation of the LDT-5500B series. In some references, parentheses are used to signify the labeled area for a particular switch or LED indicator on the front panel. - Page 31 SENSOR_OPEN? RONT ANEL EMOTE Description Returns the status of the sensor open error. Parameters None. Notes This error will disable the output and occurs if the connection for the thermistor or linear temperature sensor is open. Examples Query: SENSOR_OPEN? Response: Temperature sensing connections are connected.
- Page 32 TEC:C3 RONT ANEL EMOTE TEC:C3? Description Sets/returns the value of constant C Parameters Value between 9.999 and -9.99. Notes When the LM335 or AD590 sensors are selected via the SENSOR SELECT switch, this constant is not used. Examples Write: TEC:C3 1.125 Action: Sets constant C for presently selected sensor to 1.125.
- Page 33 TEC:GAIN RONT ANEL EMOTE TEC:GAIN? Description Sets/returns the value of the control loop gain. Parameters 1, 3, 10, 30, 100, or 300. Notes If the user enters a gain value which does not equal 1, 3, 10, 30, 100, or 300, the instrument will ignore the command.
- Page 34 TEC:LIM:THI RONT ANEL EMOTE TEC:LIM:THI? Description Sets/returns the temperature limit value. Parameters A value which represents the upper bound of the load temperature, in °C. Notes Temperature limit value must be in the range -99.9°C to 199.9°C. This value also becomes the maximum temperature set point. This value will force the TEC output to be shut off if the temperature limit is reached.
- Page 35 TEC:MODE:T RONT ANEL EMOTE Description Sets constant temperature control mode. Parameters None. Notes Since the load temperature is derived from sensor resistance, constant R and T modes are related. In T mode, the set point is converted to a resistance for reference using the appropriate constants and conversion model.
- Page 36 TEC:SEN? RONT ANEL EMOTE Description Returns the position of the SENSOR SELECT switch. 1 = 100A thermistor; 2 = 10A thermistor; 3 = LM335; 4 = AD590. Parameters None. Notes The sensor code is displayed on the TEC display whenever the back panel SENSOR SELECT switch position is changed.
- Page 37 TEC:T RONT ANEL EMOTE TEC:T? Description Sets/returns the TECs constant temperature set point. Parameters A value which represents the temperature set point, in °C. Notes The TEC temperature is controlled to this set point only when the TEC is operated in T mode. If the maximum temperature limit is set (see TEC:LIM:T), this limit becomes the maximum set point value as well.
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Page 38: Chapter 5 : Maintenance And Troubleshooting
Chapter 5 : Maintenance and Troubleshooting This chapter describes how to maintain and troubleshoot the LDT-5500B Series Temperature Controller. Calibration Disassembly Troubleshooting The service procedures described in this chapter are for use by qualified personnel. Potentially lethal voltages exist within the LDT-5500B Series Temperature Controller. To avoid electric shock, the user should not perform any of the procedures described in this chapter unless qualified to do so. -
Page 39: Recommended Equipment
Recommended Equipment Recommended test equipment for calibrating the LDT-5500B Series Temperature Controller is listed in Table 5.1. Equipment other than that shown in the table may be used if the specifications meet or exceed those listed. Recommended Calibration Equipment List Table 5.1 DESCRIPTION MFG / MODEL... -
Page 40: Calibration Adjustments
Calibration Adjustments There are two calibration adjustments that need to be made for the LDT-5500B Series Temperature Controller. They are calibration of sensor measurement and calibration of the ITE current measurement and limit circuits. If a problem arises during calibration which prevents its normal completion, the calibration may be aborted with no ill effects by simply pressing the OUTPUT switch. -
Page 41: Remote Thermistor Calibration
Remote Thermistor Calibration a. Set the SENSOR SELECT switch (back panel) to the 100A position. Set C to 0.99, C to 2.57, and C to 0.855. b. Measure and record the exact resistance of the 4k, 40k, and 400k metal film resistors. -
Page 42: Ad590 Sensor Calibration
AD590 Sensor Calibration The following procedure is for calibrating the AD590 sensor measurement so that the temperature measurement will be accurate. This procedure calibrates the current measurement of the AD590. This procedure does not calibrate C and C . For information on calibrating the AD590 sensor, see Appendix C. -
Page 43: Remote Ad590 Sensor Calibration
Remote AD590 Sensor Calibration a. Set the SENSOR SELECT switch (back panel) to the AD590 position. Set C to 0.00, C 1.00. b. Connect a precision 20k metal film resistor and a precision ammeter in series at the sensor input of the LDT-5500B Series Temperature Controller (pins 7 and 8). c. -
Page 44: Lm335 Sensor Calibration
LM335 Sensor Calibration The following procedure is for calibrating the LM335 sensor measurement so that the temperature measurement will be accurate. This procedure calibrates the voltage measurement of the LM335. This procedure does not calibrate C and C . For information on calibrating the LM335 sensor, see Appendix C. -
Page 45: Remote Lm335 Sensor Calibration
Remote LM335 Sensor Calibration a. Set the SENSOR SELECT switch (back panel) to the LM335 position. Set C to 0.00, C 1.00. b. Connect a precision 4k metal film resistor and a precision voltmeter in parallel at the sensor input of the LDT-5500B Series Temperature Controller (pins 7 and 8). c. -
Page 46: Ite Current Calibration
ITE Current Calibration The following procedure is for calibrating the ITE constant current source for both polarities of current. During this procedure the ITE current is driven to a series of pre-determined values. When each of these values is reached and is stable, the user enters the actual value of the current, as measured by an external DMM. -
Page 47: Remote Ite Current Calibration
Remote ITE Current Calibration a. For the LDT-5525B, connect a 1, 20W resistor across the TEC output terminals (pins 1 and 3). For the LDT-5545B, connect a 1.5, 50W resistor. Use a calibrated DMM to measure the voltage across the resistor. Calculate the current in the following steps by using Ohm's Law: where V is the accurately measured voltage across the resistor, and R is the accurately measured load resistance. -
Page 48: 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. It is recommended that the user start at the beginning of this guide. Read the symptom descriptions, and follow the steps for the corrective actions which apply. - Page 49 November 2017 70019907 LDT-5500B Manual...
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Page 50: Appendix A: Steinhart-Hart Equation
Appendix A: Steinhart-Hart Equation Reference the ILX Lightwave Application Note “Thermistor Calibration and the Steinhart-Hart Equation” for information on this equation. November 2017 70019907 LDT-5500B Manual... - Page 51 November 2017 70019907 LDT-5500B Manual...
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Page 52: Appendix B: Sensing Current And Thermistor Selection
Appendix B: Sensing Current and Thermistor Selection Choosing the right sensing current depends on the range of temperature that needs to be measured and the resolution required at the highest measured temperature. To correctly select the proper sensing current, two aspects must be understood: 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 53: Temperature Resolution
Table B.2 10kΩ Thermistor Temperature Range SENSING CURRENT TEMPERATURE RANGE ° 10A -30 to 30 ° 100A 10 to 70 (USING TYPICAL* 10 k @ 25 C THERMISTOR) 5.00 4.50 4.00 3.00 THERMISTOR VOLTAGE 2.00 1.00 0.00 DEGREES C 10... -
Page 54: Selecting The Sensing Current
Therefore, the sensor current chosen may impact the temperature measurement resolution as well as the set point control accuracy. Selecting the Sensing Current To select the current setting for a typical 10kΩ thermistor, determine the lowest temperature needed to sample and set the SENSOR SELECT switch according to the range limits in Table B.2. - Page 55 November 2017 70019907 LDT-5500B Manual...
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Page 56: Appendix C: Ad590 And Lm335 Sensor Calibration
Appendix C: AD590 and LM335 Sensor Calibration The LDT-5500B Series Temperature Controller uses two constants (C and C ) for calibrating linear thermal sensing devices, such as the AD590, and the LM335. C is used as the linear or zero offset value, and C is used as the slope or gain adjustment. -
Page 57: Ad590 Sensor
AD590 Sensor The AD590 is a linear thermal sensor which acts as a constant current source. It produces a current, i, which is directly proportional to absolute temperature, over its useful range (-50°C to +150°C). This nominal value can be expressed as: 1μ... -
Page 58: Lm335 Sensor
that operating range. If a greater accuracy is desired, the two point method of determining C and C should used (see page 49). Note however, the absolute error curve is non-linear; therefore the constant C will vary over different temperature ranges. LM335 Sensor The LM335 is a linear thermal sensor which acts as a constant voltage source. -
Page 59: One Point Calibration Method
One Point Calibration Method This procedure will work for any linear temperature sensor. The accuracy of this procedure depends on the accuracy of the known temperature, externally measured. It is used to determine the zero offset of the device, and it assumes that the gain offset (slope) is known and is correct. -
Page 60: Two Point Calibration Method
Two Point Calibration Method This procedure will work for any linear temperature sensor. The accuracy of this procedure depends on the accuracy of the known temperatures, externally measured. It is used to determine the zero offset of the device and the gain offset (slope). 1.
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