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Summary of Contents for Lambda EMS 7.5-75
- Page 1 TDK Lambda EMS 15-300-2-D Manual Get Pricing & Availability at ApexWaves.com Call Today: 1-800-915-6216 Email: sales@apexwaves.com https://www.apexwaves.com/power-supplies/tdk-lambda/ems-series/EMS%2015-300-2-D...
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Page 2: Power Supply
OPERATOR MANUAL FOR POWER SUPPLY 83-473-000 Revision J MODEL SERIAL NUMBER LAMBDA EMI 405 ESSEX ROAD, NEPTUNE, NJ 07753 TEL: (732) 922-9300 FAX: (732) 922-9334... -
Page 3: Table Of Contents
Table of Contents 1 GENERAL INFORMATION 1 - 1 1.1 INTRODUCTION 1 - 1 1.2 SAFETY PRECAUTIONS 1 - 1 1.3 SPECIFICATIONS 1 - 2 1.3.1 INPUT POWER 1 - 2 1.3.2 AC INRUSH CURRENT 1 - 2 1.3.3 REGULATION 1 - 3 1.3.4 TRANSIENT RESPONSE 1 - 4... - Page 4 4.2 INPUT SECTION 4 - 1 4.3 A200 INVERTER BOARD 4 - 1 4.4 OUTPUT SECTION 4 - 2 4.5 A100 CONTROL BOARD 4 - 2 4.5.1 SUPERVISORY FUNCTIONS 4 - 2 4.5.2 OVER CURRENT PROTECTION 4 - 3 4.5.3 SET-POINT REFERENCE 4 - 4 4.5.4 VOLTAGE CONTROL CHANNEL 4 - 4...
- Page 5 List of Figures FIGURE 2.1: DELTA TO WYE CONNECTION 2 - 2 FIGURE 3.1: FRONT PANEL, (5KW MODEL SHOWN) 3 - 1 FIGURE 3.2: OPERATING MODES 3 - 2 FIGURE 3.3 REAR PANEL “D” CONNECTOR 3 - 3 FIGURE 3.4: LOCAL PROGRAMMING 3 - 3 FIGURE 3.5: REMOTE PROGRAMMING BY EXTERNAL RESISTANCE, VOLTAGE MODE...
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Page 6: General Information
This manual contains instructions for the operation and maintenance of the 600W, 1KW, 2KW, 2.5KW, and 5KW EMS power supply series manufactured by Lambda EMI, Inc. of Neptune, NJ. The EMS series has been developed specifically for laboratory test and burn-in applications. -
Page 7: Specifications
9. Never remove DANGER and WARNING labels from the power supply, and replace lost or damaged labels immediately. 10. The power supply should only be serviced by Lambda EMI factory qualified personnel. 1.3 SPECIFICATIONS All performance specifications, unless otherwise stated, are defined in the local programming configuration. -
Page 8: Regulation
C. Current Mode: A load change of 100% (from full load to a short) will cause an output current deviation of less than 0.1% of maximum output current. Watts Model Number Max. Ripple (mV)p-p Carrier EMS 7.5-75 1000 EMS 7.5-130 2000 EMS 7.5-250 2500 EMS 7.5-300... -
Page 9: Transient Response
Watts Model Number Max. Ripple (mV) p-p Carrier 2500 EMS 7.5-300 5000 EMS 7.5-600 2500 EMS 10-250 5000 EMS 10-500 2500 EMS 20-125 5000 EMS 20-250 2500 EMS 30-80 5000 EMS 30-165 2500 EMS 40-60 5000 EMS 40-125 2500 EMS 60-40 5000 EMS 60-80 2500... -
Page 10: Meter Tolerance
CAUTION! Hazardous voltages may be present on the terminal block or inside the J1 connector. Insure unit is powered off and disconnected prior to servicing. Refer to Section 1.2 Voltage Mode Programming Method 0-5 Vdc 0-10Vdc 0 - 1 mA 0 - 5KΩ... -
Page 11: Environmental Specifications
1.5 ENVIRONMENTAL SPECIFICATIONS Ÿ Operating Temperature: 0-50°C without derating Ÿ Storage Temperature: -40 to +85°C Ÿ Operating Humidity: 20 - 95% RH non-condensing Ÿ Storage Humidity: 20-95% RH non-condensing Ÿ Altitude: 10,000 ft. 1.5.1 ELECTRICAL INSTALLATION CATEGORIES Ÿ Overvoltage Category II Ÿ... -
Page 12: Cooling
The following chart explains the model number for the EMS Power Supply family. The options provided by Lambda EMI are not limited to the chart. For example, 0-10 V programming of the voltage channel, 0-5 V and 0-10 V of the current channel are not listed in the chart. - Page 13 Upon receipt of this information, Lambda EMI will assign a Return Material Authorization number (RMA) and provide shipping instructions. 2. Equipment returned to Lambda EMI must be packed in such a manner as to arrive without incurring any damage. The shipping container must be marked with the RMA number in legible numbers near the shipping label.
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Page 14: Inspection And Installation
2 INSPECTION AND INSTALLATION 2.1 VISUAL INSPECTION Prior to shipment, this instrument was inspected and found to be free of mechanical and electrical defects. As soon as the unit is unpacked, inspect for any damage that may have occurred in transit. Verify the following: A. -
Page 15: Emc Requirements
A. Install single phase line terminals marked AC. Connect GND line to terminal marked GND. B. For units marked CE, the product provides more than 3.5mA of earth leakage current. Protective earth connection is essential before connecting the supply. An appropriate warning marking is placed on the rear panel. - Page 16 Units with the -CE suffix have been tested to the EMC requirements of EN 50081-1 and EN 50081-2, However in the presence of high ambient RF noise, shielding may be required on the load or the remote control cables. 83-473-000 Revision J 2 - 3 Inspection and Installation...
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Page 17: Electrical Inspection
K. Rotate Current knob completely counter clockwise. The output current should drop to zero. Flip OFF circuit breaker. If any inconsistency from the above test procedure is noted, please do not hesitate to call Lambda EMI Customer Service for assistance. 83-473-000 Revision J 2 - 4... -
Page 18: Operating Instructions
3 OPERATING INSTRUCTIONS The EMS power supply could be operated in several different configurations. Section 3 gives a detailed description of configuring the supply to the desired application. Figure 3.1: Front Panel, (5KW model shown) 3.1 FRONT PANEL The following table provides a listing of the controls and indicators that are located on the front panel along with a brief description of their functions. -
Page 19: Operating Modes
3.2 OPERATING MODES The voltage and current controls set the boundary limits for the load voltage and current respectively. The relationship between the control settings and the load resistance determines whether the power supply operates in constant voltage or constant current mode. Automatic crossover between modes depends on the followings: Ÿ... -
Page 20: Programming Modes
3.3 PROGRAMMING MODES CAUTION Hazardous voltages may be present on the terminal block or inside the J1 connector ON UNITS WITH OUTPUTS ABOVE 50VDC. Insure unit is powered off and disconnected prior to servicing. Refer to Section 1.2 The power supply could be configured for either Local or Remote programming. The supply is programmed by the shorting connections on terminal strip TB1, or J1 (the 25 Pin “D”... -
Page 21: Local Programming
Table 3.2: TB1/J1 3.3.1 LOCAL PROGRAMMING When shipped from the factory, each supply is configured for constant voltage, constant current, local programming, local sensing, single unit mode of operation. In this mode of operation the voltage and the current control knobs assert control over the output of the supply. -
Page 22: Figure 3.5: Remote Programming By External Resistance, Voltage Mode
Figure 3.5: Remote programming by External Resistance, Voltage Mode 83-473-000 Revision J 3 - 5 Operating Instructions... -
Page 23: Figure 3.6A: Remote Programming By External Voltage, Voltage Mode
CAUTION An opening in the remote programming circuit is effectively a high programming resistance and will allow an uncontrolled voltage rise exceeding the maximum output of the power supply. This may cause possible damage to the power supply and/or load. For this reason, any programming resistor switcher must have shorting contacts. -
Page 24: Remote Programming Of Current Channel
1. Remove the jumpers between terminals TB1/J1-4, and TB1/J1-5. 2. Connect a 5K Ohm, 1% 0.5w resistor between TB1/J1-4 and TB1/J1-6. 3. Connect the programming current source between terminals TB1/J1-4 (positive) and TB1/J1-6 (negative). Figure 3.7: Remote Programming by External Current, Voltage Mode. 3.3.3 REMOTE PROGRAMMING OF CURRENT CHANNEL The front panel's current control is disabled in this programming mode. -
Page 25: Figure 3.8: Remote Programming By External Resistance, Current Mode
Figure 3.8: Remote programming by External Resistance, Current Mode CAUTION An opening in the remote programming circuit is effectively a high programming resistance and will allow an uncontrolled current rise exceeding the maximum output of the power supply. This may cause possible damage to the power supply and/or load. -
Page 26: Parallel Operation
Figure 3.9b: Remote Programming by External Voltage, Current Mode (as per Option) C. External DC Current: A current of 0 to 1mA programs the output from zero to full rated current. Configure the strapping connections on TB1/J1 as shown on Figure 3.10. 1. -
Page 27: Parallel Operation - Master/Slave
unit drifts upward, it will become current limited rather than carry an excessive share of load current. IMPORTANT: In order to run power supplies with OVP in parallel, modifications must be made. Please contact the factory for further instructions, before connecting supplies with OVP in parallel. -
Page 28: Series Operation
Figure 3.12: Parallel Operation, Master/Slave 3.6 SERIES OPERATION Two EMS power supplies can be operated in series simply by connecting the negative output terminal of one unit to the positive output terminal of the other. In this configuration each unit is adjusted independently, and the total output voltage is the sum of each unit's output voltage. -
Page 29: Series Operation Master/Slave
3.7 SERIES OPERATION MASTER/SLAVE This configuration allows the customer to use two or more power supplies as a single unit. The master power supply controls the output voltage across the load. The supply that is designated the master should be set to a voltage higher than or equal to that of the slave. The voltage of the slave is determined by R = ( V −... -
Page 30: Remote Sensing (P.s. With Output Voltage 300V Or Less)
The leads to the remote meters should be twisted, and if strong AC or RF fields are present, the lead should be shielded. One end of the shield should be grounded to terminal TB1/J1-14 and the other end left floating. 3.9 REMOTE SENSING (P.S. -
Page 31: Remote Turn On
3.10 REMOTE TURN ON EXTERNAL VOLTAGE SOURCE: Connect either an external 12-24 Vdc voltage supply or a 24-115 Vac voltage supply to pins TB1/J1-15 & 16. The link between Terminals 16 & 17 must be removed. NOTE: Terminals are polarity sensitive DC. Terminal 15 is positive and terminal 16 is negative. -
Page 32: Theory Of Operation
4 THEORY OF OPERATION 4.1 PRINCIPLES OF OPERATION The basic principle of operation is outlined in this section. A simplified diagram of EMS power supply is shown below in figure 4.1. The power supply is made of the input section ( rectifier and the filter), the inverter (A200 Bd.), the output section, and the control section which is made of the A100 Bd. -
Page 33: Output Section
frequency current loops. In the half bridge ( 600w/ 1KW ) only one transistor is turned on at a time. In the full bridge, the two diagonally opposite transistors Q1 and Q4 or Q2 and Q3 are turned on simultaneously. The result of this switching is to produce a quasi-square waveform that is impressed on the primary of the power transformer. -
Page 34: Over Current Protection
PWM. When the voltage rises above 13V, pin 7 of U4 latches low, and thus Q5 will turn off if permitted by diodes CR12, CR14, CR16 and CR17, controlled respectively by the Remote Turn-on, Thermostat protection, Overvoltage protection and Turn-on delay circuits. (3) Overvoltage Protection The overvoltage trip setpoint is set by potentiometer R8. -
Page 35: Set-Point Reference
4.5.3 SET-POINT REFERENCE Separate constant current sources provide reference voltages for the voltage and current channels. The collector current of Q1 drives the voltage control potentiometer that is located on the front panel, whereas Q2 drives the current control potentiometer. The positive bias voltage supply is RC filtered with R8 and C10 to minimize noise feedthrough. -
Page 36: Pulse Width Modulator For The 2.5Kw/5Kw
current and voltage. The 1524 also provides an accurate 5.1 volt DC reference which is used for the under and over voltage lockout circuits. The PWM also contains an amplifier which converts the error signals phase by 180° (at DC) so the signal into the PWM has the proper phase. -
Page 37: Calibration And Troubleshooting
5 CALIBRATION AND TROUBLESHOOTING 5.1 INTRODUCTION A regularly scheduled maintenance of once a year is recommended for the EMS series power supply. As a minimum, maintenance should consist of a thorough cleaning of the interior, and a visual inspection of the fans and components on the printed circuit boards. NOTE: Maintenance and/or calibration procedures contained in this section will not void the unit warranty. -
Page 38: Voltage Channel And Voltmeter Calibration
proceeding to the next step. The digital meter doesn’t have a zero adjustment and the full scale is on the back of the meter, or on the A100 PCB R406 or R402. 5.3.2 VOLTAGE CHANNEL AND VOLTMETER CALIBRATION 1. Disconnect any load from output of the power supply. 2. -
Page 39: Troubleshooting
5.4 TROUBLESHOOTING Using this section in conjunction with section IV and the schematics that are provided in this manual, will help tremendously in troubleshooting the power supply by isolating and locating the cause of the fault. Before attempting to troubleshoot the power supply, perform Section 2.4 to determine whether the fault is with the associated circuitry or with the power supply.
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