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Lambda ESKI Instruction Manual

Summary of ESKI

  • Page 1

    Lambda emi 405 essex road, neptune, nj 07753 tel: (732) 922-9300 fax: (732) 922-9334 instruction manual for 83-475-001 revision d model serial number.

  • Page 2

    18 6.1 recommended spare parts list 18 6 recommended spare parts 17 5.4 troubleshooting 15 5.3 calibration 15 5.2 inspection and cleaning 15 5.1 general 15 5 maintenance and troubleshooting 14 4.4 a200 buck converter 13 4.3 signal flow (schematic 01-000-225) 13 4.2 power flow (schematic 01-475-005) ...

  • Page 3

    Memorandum to users of e/m power supplies in rack installation all e/m power supplies have been designed and tested to provide full rated current and voltage throughout the specified line voltage range at the rated ambient air temperature. To achieve this maximum rating, airflow as provided by the i...

  • Page 4

    1 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 ...

  • Page 5

    Temperature coefficient: the output current is .02% /c of rated output current. Temperature: operating continuous duty performance within specification in any ambient temperature between 0°c and 60°c with appropriate derating above 50°c. Units may be safely stored at temperatures of -55°c to 85°c. C...

  • Page 6

    Figure 1 loss pass filter page 4 of 18 83-475-001 rev. D.

  • Page 7

    2 installation 2.1 initial inspection before 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. Check for broken knobs or connectors, that the external surface i...

  • Page 8

    3 operating instructions figure 2 front panels page 6 of 18 83-475-001 rev. D.

  • Page 9

    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 ...

  • 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. Should any problems develop, the supp...

  • 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 & on/off switch (fig. 4 and fig. 4a)...

  • 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. D.

  • Page 14

    Figure 4a 1 phase external control hookup page 12 of 18 83-475-001 rev. D.

  • Page 15

    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 a...

  • Page 16

    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. The protection circuits consist ...

  • Page 17

    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 on...

  • 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. Connect the multimeter between tp5 a...

  • Page 19

    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. Most unit malfunctions wil...

  • Page 20

    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. 60-044-002 rectifier 65a cr5 78-014-000 be0 & g10 rim insulator 78-022-000 alum oxide insulator 67-066-006 ntc resistor rt301 uc3524 64-...