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Summary of Contents for Newport 3150
- Page 1 Model 3150 High Power Temperature Controller User’s Manual...
- Page 3 Newport Corporation, Irvine, California, has been certified compliant with ISO 9002 by the British Standards Institution. Corporate Headquarters Canada Italy Netherlands Taiwan R.O.C. Newport Corporation Telephone: 905-567-0390 Telephone: 02-924-5518 Telephone: 030-6592111 Telephone: 2-2769-9796 1791 Deere Avenue Facsimile: 905-567-0392 Facsimile: 02-923-2448...
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Page 4: Limited Warranty
If any such product proves defective during the applicable warranty period, Newport, at its option, either will repair the defective product without charge for parts and labor or will provide a replacement in exchange for the defective product. -
Page 5: Ec Declaration Of Conformity
EC DECLARATION OF CONFORMITY Model 3150 High Power Temperature Controller We declare that the accompanying product, identified with the “ ” mark, meets all relevant requirements of Directive 89/336/EEC and Low Voltage Directive 73/23/EEC. Compliance was demonstrated to the following specifications:... -
Page 7: Table Of Contents
Rack Mounting ________________________________________________________ 6 2.2.4 Ventilation Requirements ________________________________________________ 6 2.2.5 Power-Up Sequence ____________________________________________________ 6 2.2.6 Quick Start ___________________________________________________________ 6 Introduction to the 3150 Front Panel __________________________________ 7 2.3.1 Model 3150___________________________________________________________ 7 General Operation__________________________________________________ 8 2.4.1 Display Elements ______________________________________________________ 8 2.4.1.1 Static Fields ________________________________________________________ 8 2.4.1.2... - Page 8 2.5.2 RS-232 Connector ____________________________________________________ 15 2.5.3 Input Power Connector ________________________________________________ 15 2.5.4 Ground Post _____________________________________________________ 16 Warm Up and Environmental Consideration___________________________ 16 Temperature Controller Operation__________________________________ 17 General Features __________________________________________________ 17 TEC Safety Features _______________________________________________ 17 3.2.1 Conditions Which Will Automatically Shut Off the TEC Output ________________ 17 The TEC Connectors _______________________________________________ 18 3.3.1 TEC Interlock _______________________________________________________ 18...
- Page 9 3.4.5 RTD Sensors_________________________________________________________ 33 3.4.5.1 RTD Constants _____________________________________________________ 33 Principles of Operation ___________________________________________ 35 Introduction ______________________________________________________ 35 TEC Controller Theory of Operation _________________________________ 36 4.2.1 TEC Interface ________________________________________________________ 36 4.2.2 Limit DAC __________________________________________________________ 36 4.2.3 Set Point DAC _______________________________________________________ 37 4.2.4 A/D Converter _______________________________________________________ 37 4.2.5...
- Page 10 Figure 1 - Model 3150 Front Panel____________________________________________________ 7 Figure 2 - A Sample Screen with Various Data Fields _____________________________________ 9 Figure 3 - Model 3150 Menu Structure ________________________________________________ 10 Figure 4 - Master Display __________________________________________________________ 11 Figure 5 - Main Menu _____________________________________________________________ 12...
- Page 11 Figure 13 - Thermistor Resistance versus Temperature____________________________________ 28 Figure 14 - AD590 Nonlinearity _____________________________________________________ 30 Figure 15 - 3150 Block Diagram _____________________________________________________ 35 Figure 16 - TEC Board Diagram _____________________________________________________ 36 Figure 17 - Microprocessor Board Block Diagram _______________________________________ 40...
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Page 13: General Information
• Ultra stable bipolar output • Thermistor, AD590, LM335, and Pt RTD sensors The Model 3150 Temperature Controller is a result of Newport’s continuing commitment to provide advanced instrumentation at affordable prices. High Power Temperature Controller Fulfills All Your Thermo... -
Page 14: Available Options And Accessories
GPIB interface. In addition, a standard serial RS-232C port allows simpler interfacing to a PC. As your instrumentation needs change the Model 3150 Temperature Controller will adapt to all your new applications giving you the ultimate in flexible laboratory equipment. -
Page 15: Symbols
42 VDC or 42V peak AC. Do not exceed 42V between any portion of the Model 3150 (or any attached detector or probe) and earth ground or a shock hazard will result. -
Page 17: System Operation
2.2.1 AC Power Considerations The 3150 can be configured to operate at a nominal line voltage of 100, 120, 220, or 240 VAC. Normally, this is done at the factory and need not be changed before operating the instrument. However, be sure that the voltage setting is correct on the power input module and correct fuses are installed per section 6.2 before connecting... -
Page 18: Rack Mounting
There is no risk of damage to the unit if such a condition occurs. After this test, the 3150 is configured to the state it was in when the power was last shut off and displays the master display. -
Page 19: Introduction To The 3150 Front Panel
Introduction to the 3150 Front Panel 2.3.1 Model 3150 Described below are the functions of each area of the Model 3150 front panel, as shown in Figure 1. Figure 1 - Model 3150 Front Panel Power On/Off Switch - Switches on/off the AC power to the unit. -
Page 20: General Operation
2.4.1 Display Elements The Model 3150 uses a character display to depict information about the current state of the system. The display can be broken down into four basic elements: static fields, non-editable data fields, editable data fields, and soft key labels (see Figure 2). -
Page 21: Soft Keys
For macros and special functions, the FUNC key is used both to execute and to enter the setup screen on the particular function. For example, if the 3150 supported a special function assigned to the up arrow key, to enter the setup screen of this function, press and hold the FUNC key, then press the up arrow key, then release both. -
Page 22: Menu Structure
MASTER key, the MENU key, and the TEC key. 2.4.3 Menu Structure Master Display Setup Main Menu Communications Local Configure Menu System Save/Recall Calibration Figure 3 - Model 3150 Menu Structure... -
Page 23: Master Display
LOCAL - When the unit is in remote mode, either through GPIB or RS-232C communications, the Local soft key will be available. Pressing it returns the 3150 to a local state. When in local mode, this key does not appear on the display. -
Page 24: Configure Menu
Lockout dial= Lockout pad= → → → → Audible beep= Yes Key Rate= Fast Dial Rate= Fast The system configure screen controls basic operation of the 3150 system. Brightness varies the backlighting intensity. Contrast is used to optimize the viewing angle. - Page 25 Audible Beep controls the system’s audible beeper. The beeper indicates errors, invalid data entry, and other situations where the 3150 needs to alert the user. Key Rate - this controls the speed at which, when a key is held down, it repeats.
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Page 26: Save/Recall Screen
3150 are stored. The user selects a “bin” number for saving the parameters, up to the maximum available in the instrument. Then, when that “bin” number is recalled, the 3150 is restarted and the parameters are reconfigured to the previously stored values. -
Page 27: Error Message Control
3150. Display of error messages on the 3150 screen may be disabled while in remote mode by setting Err While Rmt to No, or by using the GPIB command REMERR to set this value remotely. -
Page 28: Ground Post
Warm Up and Environmental Consideration Operate the 3150 at an ambient temperature in the range of 0 to +40°C. Storage temperatures should be in the range of -20 to +60°C. To achieve rated accuracy, let the 3150 warm up for 1 hour. For greatest accuracy, recalibrate when ambient temperature changes more than a few degrees. -
Page 29: Temperature Controller Operation
C H A P T E R Temperature Controller Operation General Features The 3150 Temperature Controller is a precision thermoelectric cooler controller. Features include: • Closed-case calibration • Operational with most thermistors, IC and RTD temperature sensors • Flexible setup with Save/Recall front panel functions •... -
Page 30: The Tec Connectors
Chapter 3 Temperature Controller Operation The TEC Connectors A high power 7W2 female D-connector is used for input and output connections, as shown by the pin out diagram below. 3150-02 Cable Description Color Code Black Sensor+ Green Sensor- White Interlock... -
Page 31: Tec Setup Screen
Chapter 3 Temperature Controller Operation Ts= 25.00 °C → → → → 25.00 °C Ite= 0.00 A ← ← ← ← I V T R C InT SETUP Figure 10 - TEC Main Screen Is=, Ts=, Rs=, is=, vs= - Indicates the set point value of current, temperature, resistance, AD590 sensor current, or LM335 sensor voltage, respectively. -
Page 32: The And Soft Keys
Chapter 3 Temperature Controller Operation Sens= → → → → Mode= Const T Gain= Lim Ite= 2.0 A Tol Time= 5.000 S → → → → Tol Temp= 0.20 °C Lim Tl= 10.00 °C Lim Th= 50.00 °C Vpow= 10.00 V Ths= 24.9 °C Tamb=... -
Page 33: Mode
This mode holds the TEC at a constant temperature based on feedback from the sensor in the TEC mount, using “Ts=” and “T=” variables. In this mode, the 3150 uses a control loop comparing the sensor input to the temperature set point, driving the I current positive or negative to reach and maintain that set point. -
Page 34: Gain
Chapter 3 Temperature Controller Operation 3.4.2.4 Gain The Gain function controls two parameters of the hybrid PI control loop; proportional gain and integration time. When the actual temperature and the set point are different, an error voltage is generated. This error voltage is directly related to the difference in the actual and set point temperatures. -
Page 35: Temperature Limits (Lim Th And Lim Tl)
Chapter 3 Temperature Controller Operation 3.4.2.5.2 Temperature Limits (Lim Th and Lim Tl) The TEC supports both a low and high temperature limit, and can be programmed to turn the TEC output off in the event those limits are exceeded (default state). The temperature limits are monitored regardless of the mode of the TEC. -
Page 36: Thermistor And Thermistor Current Selection
3150 limits the lower end of the temperature range. Thermistor resistance and voltage are related through Ohm's Law (V = I x R). The 3150 supplies current to the thermistor, either 10 µA or 100 µA , and as the resistance changes a changing voltage signal is available to the thermistor inputs of the 3150. -
Page 37: Temperature Resolution
Temperature Resolution You must also consider measurement resolution since the resolution decreases as the thermistor temperature increases. The 3150 uses an A/D converter that has a maximum resolution of about 0.763Ω in 10uA range. The microprocessor converts this digital number to resistance, stores this resistance, then converts it to a temperature using the Steinhart-Hart equation, and stores this temperature. -
Page 38: Selecting Thermistor Current
If you require a different temperature range or the accuracy you need can't be achieved with either current setting, select another thermistor. Thermistor temperature curves, supplied by the manufacturer, show the resistance versus temperature range for many other thermistors. Contact a Newport application engineer with your specific application. -
Page 39: The Steinhart-Hart Equation
Chapter 3 Temperature Controller Operation 3.4.3.6 The Steinhart-Hart Equation The Steinhart-Hart equation is used to derive temperature from the non-linear resistance of an NTC (Negative Temperature Coefficient) thermistor. The following section contains an explanation of the Steinhart-Hart equation and the values of these constants for some common thermistors. -
Page 40: Table 2 - Comparison Of Curve Fitting Equations
-0.00 Table 2 - Comparison of Curve Fitting Equations The constants C1, C2, and C3 are expressed in the form n.nnnn, simplifying entry into the 3150. Resistance of a BetaTHERM 10K3 thermistor. Constants C1 = 1.1292 * 10 , C2 = 2.3411 * 10... -
Page 41: Table Of Constants
Table of Constants We have listed some common thermistors and included the appropriate calibration constants for the temperature range -20 °C to 50 °C in Table 3. The Model 3150, by default, uses the BetaTHERM 10K3 thermistor values. C1 * 10... -
Page 42: Lm335 Sensor
= C1 + (C2 * T ), is then computed, where C1 and C2 are the constants stored in the 3150 for the AD590. The AD590 grades of tolerance vary, but typically without adjusting C1 and C2, the temperature accuracy is ±1°C over its rated operating range. -
Page 43: Determining C1 And C2 For The Ad590 And Lm335
, which is displayed by the 3150 is calculated as follows: = C1 + (C2 * T where C1 and C2 are the constants stored in the 3150 for the LM335. When the LM335 is calibrated to 25°C, C1 = 0 and C2 = 1, and the temperature accuracy is typically ±0.5°C over the rated operating range. -
Page 44: Two Point Calibration Method
The accuracy of this procedure depends on the accuracy of the externally measured temperature. It is used to determine the zero offset of the device and the gain (slope). Allow the 3150 to warm up for at least one hour. Select the desired sensor type in the setup menu. -
Page 45: Rtd Sensors
Chapter 3 Temperature Controller Operation 3.4.5 RTD Sensors The following equation is used in temperature to resistance conversions: [1 + C1 x T - C2 x T - C3 x (T-100) x T for T < 0°C [1 + C1 x T - C2 x T for T >= 0°C is the resistance in Ω... -
Page 47: Principles Of Operation
C H A P T E R Principles of Operation Introduction A functional block diagram of the 3150 is shown in Figure 15. In each of the following sections there are functional block diagrams for the various circuit boards of the 3150. -
Page 48: Tec Controller Theory Of Operation
Chapter 4 Principles of Operation TEC Controller Theory of Operation Figure 16 shows the functionality of the TEC. The following sections detail the theory of operation for each of the blocks in Figure 16. To Microprocessor Optically Limit Set Point Isolated Limit DAC Serial Bus... -
Page 49: Set Point Dac
Chapter 4 Principles of Operation 4.2.3 Set Point DAC The microprocessor loads the digitally stored temperature or current set point value into the set point 16-bit DAC. The Set Point DAC converts a digital set point signal from the microprocessor to a voltage which becomes the set point input to the PI control loop. -
Page 50: Bipolar Output Stage
4.2.10 TEC Control Modes The 3150 provides three control modes for operation, constant T (temperature), constant R (resistance, voltage, or current), and constant I (current) modes. Each of these modes is discussed in the following sections. -
Page 51: R Mode
Chapter 4 Principles of Operation When an LM335 sensor is used, a two-point conversion equation is used to determine the temperature. Its voltage is measured as well as the I current and V voltage. When an AD590 sensor is used, another two-point conversion equation is used to determine the temperature. -
Page 52: Microprocessor Board
Microprocessor Board The Microprocessor Board contains the microprocessor, memory, the serial interface to the TEC, front panel interface, and circuitry that saves the state of the 3150 at power down. The block diagram of the Microprocessor Board is shown in Figure... -
Page 53: Memory
Principles of Operation 4.3.2 Memory The 3150 uses three types of memory. RAM memory is retained only while power is applied to the unit. ROM memory contains the firmware. The third type of memory is electrically erasable programmable memory: EEPROM. -
Page 54: Main Supply
Chapter 4 Principles of Operation 4.4.2 Main Supply This supply provides digital circuit power for all functions except the TEC. It also provides fan power. -
Page 55: Tips And Techniques
Tips and Techniques Introduction This chapter is intended to further explain specific operational details of the Model 3150, as well as provide application examples. TEC Limits The TEC maintains several limits that control the operation of the unit. There are a... - Page 56 Each time the sensor is changed, the old R limits and set point no longer apply to the new sensor. The 3150 calculates the new values for the upper and lower R limits and set point based on the temperature limits and set point. After the R values are initialized, changing the temperature limits or set point will not affect the corresponding R values until the next time the sensor type is changed.
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Page 57: Maintenance
There are no user serviceable parts inside. Do not attempt to remove the cover. Fuse Replacement The fuses are accessible on the back panel of the 3150. Before replacing a fuse, turn power off and disconnect the line cord. Use only the fuses indicated below. -
Page 59: Calibration
0°C to 40°C. 7.1.2 Warm-Up The 3150 should be allowed to warm up for at least 1 hour before calibration. TEC Calibration 7.2.1 Recommended Equipment Recommended test equipment for calibrating the TEC is listed in Table 5. -
Page 60: Local Operation Thermistor Calibration
Chapter 7 Calibration Description Mfg./Model Specification DC Amps @ 1.0 A): ±1% HP34401A Resistance (@ 10 ohms): 0.02% Resistors Metal Film 20 kΩ for 100µA calibration 200 kΩ for 10µA calibration 3 kΩ for LM335 sensor calibration 16 kΩ for AD590 sensor calibration 100 Ω... -
Page 61: Local Operation Ad590 Sensor Calibration
TEC:R <nrf value> command. If, at any time prior to TEC:R, a command other than TEC:R or TEC:R? is sent to the 3150, the 3150 will cancel the calibration mode and then process the command(s). Once the TEC:R value is sent, the OPC? query may be used to determine when the calibration is completed. -
Page 62: Local Operation Lm335 Sensor Calibration
Calibration If, at any time prior to TEC:R, a command other than TEC:R or TEC:R? is sent to the 3150, the 3150 will cancel the calibration mode and then process the command(s). Once the TEC:R value is sent, the OPC? query may be used to determine when the calibration is completed. -
Page 63: Local Operation Rtd Calibration
<nrf value>) via the TEC:R <nrf value> command. If, at any time prior to TEC:R, a command other than TEC:R or TEC:R? is sent to the 3150, the 3150 will cancel the calibration mode and then process the command(s). Once the TEC:R value is sent, the OPC? query may be used to determine when the calibration is completed. -
Page 64: Local Operation Ite Current Calibration
Chapter 7 Calibration between the TEC and the RTD sensor) can cause significant temperature offset. The lead resistance may be taken out of the RTD reading as follows: With the TEC output off, short the sensor wires as close to the RTD sensor as possible. - Page 65 TEC:CAL:ITE? query is sent, a “1” is returned. Input the actual current (as an <nrf value>) via the TEC:ITE <nrf value> command. The 3150 will then drive the current to 25% of the initial set point. The 3150 will be ready to receive the second measured current value when, after a TEC:CAL:ITE? query is sent, a “1”...
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Page 67: Factory Service
2. Instrument serial number (On rear panel) 3. Description of the problem. If the instrument is to be returned to Newport Corporation, you will be given a Return Materials Authorization (RMA) number, which you should reference in your shipping documents as well as clearly marked on the outside of the shipping container. -
Page 69: Service Form
Service Form Newport Corporation USA Office: 949/863-3144 FAX: 949/253-1800 Name RETURN AUTHORIZATION # Company (Please obtain prior to return of item) Address Country Date P.O. Number Phone Number Item(s) being returned: Model # Serial # Description Reason for return of goods (please list any specific problems) -
Page 71: Error Messages
GPIB/RS232 Errors E-400 to E-499 TEC Control Errors Table 6 contains all of the error messages which may be generated by the 3150. Not all of these messages may be displayed. Some refer to GPIB activities only, for example. Table 6 - Error Codes... - Page 72 Chapter 9 Error Messages Error Code Explanation E-303 Input buffer overflow E-304 Output buffer overflow E-305 Parser buffer overflow E-402 Sensor open disabled output. E-403 TEC open disabled output. E-404 TEC Current limit disabled output. E-405 TEC Voltage limit disabled output. E-406 TEC resistance/reference limit disabled output E-407...
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Page 73: Specifications
C H A P T E R Specifications 10.1 Temperature Controller Specifications Specifications 3150 TEC Output Maximum Current / Voltage 15 Amps at 23 Volts or 12.5 Amps at 28 Volts Maximum Power 350 Watts TE Current Resolution (mA) 0.458 TE Current Accuracy (mA) ±... -
Page 74: General Specifications
-20°C to 60°C, < 90% relative humidity non-condensing Isolation TEC electrically isolated with respect to earth ground. In accordance with ongoing efforts to continuously improve our products, Newport Corporation reserves the right to modify product specifications without notice and without liability for such changes.
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