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Summary of Contents for Lambda ESKI
- Page 1 INSTRUCTION MANUAL FOR 83-475-001 Revision D MODEL SERIAL NUMBER LAMBDA EMI 405 ESSEX ROAD, NEPTUNE, NJ 07753 TEL: (732) 922-9300 FAX: (732) 922-9334...
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Page 2: Table Of Contents
TABLE OF CONTENTS Description Page 1 GENERAL INFORMATION 1.1 DESCRIPTION 1.2 SPECIFICATIONS 2 INSTALLATION 2.1 INITIAL INSPECTION 2.2 MECHANICAL CHECK 2.3 POWER REQUIREMENTS 2.4 COOLING 2.5 MECHANICAL 3 OPERATING INSTRUCTIONS 3.1 TURN-ON CHECK OUT PROCEDURE 3.2 MODES OF OPERATION 4 PRINCIPLES OF OPERATION 4.1 GENERAL 4.2 POWER FLOW (SCHEMATIC 01-475-005) 4.3 SIGNAL FLOW (SCHEMATIC 01-000-225) - Page 3 On the ESKI supplies, air enters the unit from the front, at the location of the fan, and is transferred through the supply in a horizontal direction toward the rear. Airflow is reduced any time there is a negative pressure at the air inlet or positive pressure at the air outlet.
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Page 4: General Information
1.1 DESCRIPTION This manual contains operation and maintenance instructions covering the Electronic Measurements, Inc. series of ESKI power supplies. These supplies are constant current regulated sources of DC power, which also contain boost voltage and ignition pulse to start Xenon Lamps. - Page 5 Per UL 1012 with standard RFI filter. CONTROLS: All ESKI power supplies are provided with a U/L listed circuit breaker which combines primary circuit protection with on/off control. Current adjustment is via a single (10) turn potentiometer located on the front panel. Indication of the output current is provided by an ammeter mounted on the front panel.
- Page 6 Figure 1 Loss Pass Filter Page 4 of 18 83-475-001 Rev. D...
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Page 7: Installation
2 INSTALLATION 2.1 INITIAL INSPECTION Before shipment, this instrument was inspected and found to be free of mechanical electrical defects. As soon as the unit is unpacked, inspect for any damage that may have occurred in transit. Check for broken knobs or connectors, that the external surface is not scratched or dented, meter faces are not damaged and that all controls move freely. -
Page 8: Operating Instructions
3 OPERATING INSTRUCTIONS Figure 2 Front Panels Page 6 of 18 83-475-001 Rev. D... -
Page 9: Turn-On Check Out Procedure
3.1 TURN-ON CHECK OUT PROCEDURE The front panel surface contains all the controls and indicators necessary to operate the supply in its normal mode. The following checkout procedure describes the use of the front panel control and indicators (Fig. 2) and insures that the supply is operational. This preliminary check of the power supply is done without a load connected. - Page 10 3.2.1 NORMAL OPERATION (FIG. 3 AND FIG. 3A) Pins 1 & 9 jumpered, Pins 3 & 10 jumpered, Pins 7 & 8 jumpered and Pins 12 & 6 jumpered. This is the normal mode of operation. All performance specifications, unless otherwise stated, are defined in this configuration.
- Page 11 Figure 3 1 Phase Front Panel Control Hookup Page 9 of 18 83-475-001 Rev. D...
- Page 12 Figure 3A 3 Phase Front Panel Hookup 3.2.5 REMOTE PROGRAMMING BY AN EXTERNAL VOLTAGE The jumpers between Pins 7 & 8 and 6 & 12 are removed and an external voltage is fed to Pins 6 & 11. The positive side to Pin 6 & the negative to Pin 11. 3.2.6 EXTERNAL INTERLOCK &...
- Page 13 The current from the supply can be monitored by reading the voltage between Pins 4 & 2 of P1. This voltage is set for 1 volt = 10 Amps when received from the factory and can be loaded with a resistance of 10k Ohms. Figure 4 3 Phase External Control Hookup Page 11 of 18 83-475-001 Rev.
- Page 14 Figure 4A 1 Phase External Control Hookup Page 12 of 18 83-475-001 Rev. D...
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Page 15: Principles Of Operation
4 PRINCIPLES OF OPERATION 4.1 GENERAL This supply rectifies and filters the AC input voltages, then a 20kHz switching buck regulator regulates the output DC. Also supplied is a 25kV ignition pulse and 800V boost to start the lamp. The A100 PCB compares the output current to the input reference and adjusts the duty cycle up or down to maintain regulation. -
Page 16: A200 Buck Converter
Q3, U5B and CR22 produce a 1mA current source at P1 (Pin 8). The supply requires a 0 to 5 volt signal to output, zero to full current out. To get this voltage on Pin 7 (P1), the 1mA current source is conducted through a 0 to 5k Ohm pot to produce the control voltage. -
Page 17: Maintenance And Troubleshooting
5 MAINTENANCE AND TROUBLESHOOTING 5.1 GENERAL A regularly scheduled preventative maintenance consisting of a thorough cleaning of interior and a visual inspection of the components on the circuit boards and heatsinks mounted on the chassis floor. A relatively clean location would require at least one inspection every six months. - Page 18 1. Connect the load in series with the shunt to the output terminals. 2. Plug in a jumpered plug for normal operation, see paragraph 3.3. 3. Connect the multimeter across the shunt. 4. Turn on the supply and adjust the output current for 80MV across the shunt. 5.
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Page 19: Troubleshooting
5.4 TROUBLESHOOTING WARNING: When servicing supply, dangerous voltage levels exist. Be especially careful of personnel and equipment because this supply is not isolated from the AC line. Almost all measurements will be made with one terminal connected to AC line potential. -
Page 20: Recommended Spare Parts
6 RECOMMENDED SPARE PARTS 6.1 RECOMMENDED SPARE PARTS LIST This list covers the recommended spare parts for the ESKI supplies made by Electronic Measurements, Inc. CIRCUIT REF. DESCRIPTION EM PART NO. MFR. NO. Rect. 30A 600v 60-050-001 Soft Start Relay...
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