Lambda Vega Series Applications Manual
  1. Manuals
  2. Brands
  3. Lambda Manuals
  4. Power Supply
  5. Vega Series
  6. Applications manual

Lambda Vega Series Applications Manual

Hide thumbs

Advertisement

Table of Contents

Applications Manual
Rev:
A3
Date:
October 2003
Vega Series
Power Supply
3055 Del Sol Blvd.
San Diego, CA 92154
Phone: (619) 575-4400
Fax: (619) 429-1011

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Vega Series and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Lambda Vega Series

Summary of Contents for Lambda Vega Series

  • Page 1 Applications Manual Vega Series Power Supply 3055 Del Sol Blvd. San Diego, CA 92154 Phone: (619) 575-4400 Fax: (619) 429-1011 Rev: Date: October 2003...

  • Page 2: Table Of Contents

    Vega Customer Applications Manual Table of Contents Table of Contents ....................................2 Section 1 - Connection ..................................3 Section 2 - Analogue Primary Options ............................. 8 Section 3 - Analogue Secondary options............................11 Section 4 - Output Ripple and Noise............................... 18 Section 5 - Fans and Cooling ................................

  • Page 3: Section 1 - Connection

    AMP 42100-2). The housing incorporates two locking tabs and a tywrap may be used for additional strain relief of the AC cable. Kits of 25pcs including the moulded housing and faston connectors and ty-wraps are available, Lambda part number = KT-AC-88537.
  • Page 4 Vega Customer Applications Manual Section 1 - Connection There is also available a screw terminal input version of Vega. This has a perspex safety cover and access to fit the screw terminals to the input is via 3 holes in the lid. Vega imposes no special requirements for mains installation over and above standard good practise in using switchmode power supplies: 1) Use either twisted cable of about 1 twist per centimetre or standard sheathed mains cable.
  • Page 5 Vega Customer Applications Manual Section 1 - Connection Output Voltages are delivered factory set according to customer requirement. Adjustment can be made via multi-turn potentiometers at the front of each module. CLOCKWISE = INCREASE VOLTAGE. Refer to the handbook for module adjustment range when adjusting output voltages and ensure that maximum power and maximum ampere turns are not exceeded.
  • Page 6 Vega Customer Applications Manual Section 1 - Connection When connecting Vega by means of a cable harness, run the remote sense and power output cables as separate pairs twisted tightly together with at least 1 twist per centimetre. Keep cable runs as short as possible. When connecting Vega to the load by means of a PCB backplane, run the power tracks "back to back"...
  • Page 7 Vega Customer Applications Manual Section 1 - Connection Mating connector information: Note: housing and pins supplied with each power supply. Housing: Molex 50-37-5023 Crimp pin: Molex 08-70-1039 Hand Crimp Tool: 69008-0959 (Europe or Japan) Or 11-01- 0204(USA) Rev. A3: October 2003 Page 7 of 48...

  • Page 8: Section 2 - Analogue Primary Options

    Vega Customer Applications Manual Section 2 - Analogue Primary Options Section 2 - Analogue Primary Options OPTION E, EV, F, FV, xEV, xFV The Analogue primary option is a factory fitted option board which provides the following functions: 1) Warning the AC input has been lost or that the converter has overheated. 2) Global inhibit / enable (Global meaning the option inhibits/enables all modules or outputs at the same time).
  • Page 9 Vega Customer Applications Manual Section 2 - Analogue Primary Options Global Inhibit Logic 0 Global Inhibit Logic 1 Pin 5 to be taken to 0-0.8V to Pin 6 to be taken to 2 – 5V to turn outputs off, otherwise turn outputs off, otherwise outputs normally on outputs normally on...
  • Page 10 Vega Customer Applications Manual Section 2 - Analogue Primary Options AC FAIL PIN 1 This provides an opto-isolated output which provides a minimum of 5mS warning before loss of output power due to either loss of AC input or over temperature of the converter. PIN 2 Ic max Vce max...

  • Page 11: Section 3 - Analogue Secondary Options

    Vega Customer Applications Manual Section 3 - Analogue Secondary options Section 3 - Analogue Secondary options Secondary Option N. The N option is a factory fitted assembly that can be specified for output modules. The option has the following function: Module Good, output signal that indicates when the module is within 10% of the set voltage level.
  • Page 12 Vega Customer Applications Manual Section 3 - Analogue Secondary options N option for TWIN (2 output) modules. There is one 6 pin connector for EACH output. The connector for that output is directly adjacent to the faston output terminals for that output. PIN 6 Mating connector information: Note: housing and pins supplied with...
  • Page 13 Vega Customer Applications Manual Section 3 - Analogue Secondary options Module Good Circuit connections. The output stage is an uncommitted transistor of an opto-coupler. The transistor is “ON” (saturated) when module is “GOOD”. Module is GOOD when output voltage is between Module good C (Collector) 90%(+/-5%) and 110%(+/-5%) of its factory set voltage.
  • Page 14 Vega Customer Applications Manual Section 3 - Analogue Secondary options Starpoint Parallel Circuit connection. Starpoint parallel circuit connection is achieved by "daisy chaining" all the parallel pins together in any group of modules required to share. PIN 5 MODULE 1 PIN 7 PIN 5 MODULE 2...
  • Page 15 Vega Customer Applications Manual Section 3 - Analogue Secondary options N+1 redundant & "Hot Swap" Vega power supplies can be connected in 1+1 redundant with active current share utilising the "N" option. This allows one of the power supplies to fail and the system remain running as the other power supply can drive the required current.
  • Page 16 Vega Customer Applications Manual Section 3 - Analogue Secondary options 1+1 Current sharing system Locally Sensed MODULE 1 MODULE 2 Locally sensed is TRUE redundant function. Shuttle 1 or 2 failing cannot influence the other shuttle. The system will always remain functional. Not shown are the L, N and Earth connections.
  • Page 17 Vega Customer Applications Manual Section 3 - Analogue Secondary options Remote Sense option “R” (Twin output only) (All single, one and a half and dual slot single output modules have remote sense provided as standard, remote sense is also provided with “N” option fitted to twin output modules) The “R”...

  • Page 18: Section 4 - Output Ripple And Noise

    The Measurement of ripple and noise. Lambda measures ripple and noise on switching power supplies using an oscilloscope with the bandwidth limited to 20Mhz. The measurement is taken at the end of a 150mm length pair of twisted cables terminated with 10uF electrolytic capacitor and 0.1uF ceramic capacitor.
  • Page 19 Vega Customer Applications Manual Section 4 - Output Ripple and Noise Minimising System noise. The application note "Vega Connection" gives information on basic connection of Vega and good wiring practice. This includes using twisted pairs for cabling and de-coupling at loads. This will help minimize noise in a system designed using Vega power supplies.

  • Page 20: Section 5 - Fans And Cooling

    Vega Customer Applications Manual Section 5 - Fans and Cooling Section 5 - Fans and Cooling Installation for best Airflow. The exceptional power densities of Vega are achieved by careful thermal design and forced air cooling from an integral fan. Airflow can be forward in which case air is drawn in at the fan end and exhausted from the module or reverse in which air is drawn in at the module end and exhausted via the fan end.

  • Page 21: Section 6 - Vega Outline Drawings

    Vega Customer Applications Manual Section 6 - Vega Outline Drawings Section 6 - Vega Outline Drawings Rev. A3: October 2003 Page 21 of 48...
  • Page 22 Vega Customer Applications Manual Section 6 - Vega Outline Drawings Rev. A3: October 2003 Page 22 of 48...
  • Page 23 Vega Customer Applications Manual Section 6 - Vega Outline Drawings Rev. A3: October 2003 Page 23 of 48...
  • Page 24 Vega Customer Applications Manual Section 6 - Vega Outline Drawings Rev. A3: October 2003 Page 24 of 48...
  • Page 25 Vega Customer Applications Manual Section 6 - Vega Outline Drawings Rev. A3: October 2003 Page 25 of 48...
  • Page 26 Vega Customer Applications Manual Section 6 - Vega Outline Drawings Rev. A3: October 2003 Page 26 of 48...

  • Page 27: Section 7 - Mtbf To Mil217F

    Vega Customer Applications Manual Section 7 - MTBF to MIL217F Section 7 - MTBF to MIL217F MTBF's have been calculated using MIL-HDBK-217F Ground benign. The modular nature of the product makes it difficult to determine the MTBF for every combination of output voltages and load, the numbers given are therefore typical.

  • Page 28: Section 8 - Emc Installation Notes

    Radiated and conducted performance can be further enhanced by :- 1) Inclusion of a proprietary mains input filter. Lambda has a wide range of suitable mains filters available for all circumstances. Contact Technical Support at Lambda for advice and details on specific filter performance and attenuation or for advice on designing for good EMC performance.

  • Page 29: Section 9 - Functional Notes

    Vega Customer Applications Manual Section 9 - Functional Notes Section 9 - Functional Notes The aim of this application note is to describe and explain the function of the Vega 450W and 650W converters and the function of Vega modules. It is not a description of the circuits and topologies, but purely a description of practical functionality.
  • Page 30 Vega Customer Applications Manual Section 9 - Functional Notes capacitors charges to a set level the thermistor is "switched out" via a relay and current will become the nominal input current which depends on load. Actual nominal input current = (actual output power/efficiency)/Input voltage. If circuit breakers or fuses are used in a customer system, ensure they are capable of handling a 40A turn on surge.
  • Page 31 Vega Customer Applications Manual Section 9 - Functional Notes On overvoltage condition from any Vega module in a given output module line-up (configuration) will effectively shut down the whole power supply, the outputs from all modules will be lost. The fan will also stop. To re-establish the outputs, it is necessary to cycle the mains off and then back on again.

  • Page 32: Section 10 - Combining Modules

    Vega Customer Applications Manual Section 10 - Combining Modules Section 10 - Combining Modules Combined or seriesed Modules BB@, CC@, DD@, EE@, HH@ The above modules are factory seriesed Vega modules to increase the range of output voltages and currents that are available.
  • Page 33 Vega Customer Applications Manual Section 10 - Combining Modules Twin module with fastons Example 2 : 1 slot C3 module with voltages combined. 2 x C3 modules can be combined to provide 20V nominal at 18Amps. Vmin Vnom Vmax Imax C3 module 1 16.2 C3 module 2...
  • Page 34 Vega Customer Applications Manual Section 10 - Combining Modules Example 3 : 1.5 slot D4 module with voltages combined. 2 x D4 modules can be combined to provide 36V nominal at 18Amps. Vmin Vnom Vmax Imax C3 module 1 21.5 C3 module 2 21.5 Combination...
  • Page 35 Vega Customer Applications Manual Section 10 - Combining Modules With Faston Terminations With Screw Terminations Tables of Common module combinations. This table shows the most commonly used series combinations that are available. Module How done Vmin Vmax Imax Slots Power @ Power @ name Vmin...
  • Page 36 Vega Customer Applications Manual Section 10 - Combining Modules Remote Sense Mating connector information: Note: housing and pins supplied with Remote sense can be used to compensate for the drop in voltage each power supply. along the load cables or for the drop in Housing: Molex 50-37-5023 voltage across blocking diodes.
  • Page 37 Vega Customer Applications Manual Section 10 - Combining Modules The other module of the combination has the -V power terminal. That module also has a 2pin molex with +S and -S pins. Connect the -S from the molex on this module to the -ve side of the load. LOAD Local Sense and Combination modules.
  • Page 38 You cannot series modules to any higher than 60V without exceeding the limits for SELV (Safe Extra Low Voltage). If voltages higher than 60V are required then contact Lambda to discuss, there will be safety implications due to the SELV allowable output voltage being exceeded.
  • Page 39 Vega Customer Applications Manual Section 10 - Combining Modules Using Options with Combination Modules. Inhibit and Power Good Option : "N" Option. The "N" option is available on 1slot, 1.5slot and 2slot combination modules. When the "N" option is specified for a combination module, each module will have it's own option board fitted. Option boards 2 pin Molex The available functions when the option is fitted are :-...
  • Page 40 Vega Customer Applications Manual Section 10 - Combining Modules Each of the two option boards have the following pin out. Pin No Function Unused. Module Good E +Ve Sense. *1 Module Good C Starpoint Parallel. Unused. Starpoint Parallel. Module Inhibit -Ve -Ve Sense.
  • Page 41 Vega Customer Applications Manual Section 10 - Combining Modules The available functions when the option is fitted are :- Module Good. Module Inhibit. Remote Sense. Rev. A3: October 2003 Page 41 of 48...
  • Page 42 Vega Customer Applications Manual Section 10 - Combining Modules Module Good connection with combination modules. Each option board fitted to each module in the combination has an opto isolated npn transistor which is ON when that module is good. Connect both transistors together in series so that both transistors will be ON when the module combination is good.
  • Page 43 Vega Customer Applications Manual Section 10 - Combining Modules "High" when module good. Module Good Signal Module Good signal Output Voltage Inhibit Connection with combination modules. Each option board fitted to each module in the combination has the diode of an opto isolted transistor in series with a 390ohm resistor.

  • Page 44: Section 11 - Wide Range Programmable Modules

    Vega Customer Applications Manual Section 11 - Wide Range Programmable Modules Section 11 - Wide Range Programmable Modules W2 Programmable Module 1.1 The single slot module W2 has a range of 0.25-7.5V DC with a current capability of 30 amps. 1.2 The W2 Module must be fitted with any one of the control options listed in section.
  • Page 45 Vega Customer Applications Manual Section 11 - Wide Range Programmable Modules Abbreviations W2: - Wide range, 2 turns F or T: -Fixed or Tracking O/V S or F: - Screw terminals or Fastons V or R: -Voltage programming or Resistive programming 1-4: - Combinations of current programming and inhibit or enable...
  • Page 46 Vega Customer Applications Manual Section 11 - Wide Range Programmable Modules Pin 1, 2, & 3 Return circuit for pins 4, 5, & 6 Pin 4 0-5V external voltage programming pin Pin 5 0-5V current programming pin Pin 6 0-32kΩ Resistance programming pin Pin 7, 8 Module Inhibit or Enable –Ve Pin 9, 10...
  • Page 47 Vega Customer Applications Manual Section 11 - Wide Range Programmable Modules Inhibit. Enable. 2 – 5V 2 – 5V 0 – 0.8V 0 – 0.8V OUTPUTS ON OUTPUTS OFF OUTPUTS OFF OUTPUTS ON Figure 4. General Installation All switch mode power supplies can be sensitive to stray inductance in the power leads and specifically in remote sense leads if installed poorly.
  • Page 48 Vega Customer Applications Manual Section 11 - Wide Range Programmable Modules the voltage drop due to load lead resistance and/or blocking diodes if used. The maximum voltage drop between the load and sense connections should not exceed the maximum voltage specified for that module. Always observe the following general rules for remote sense operation: - a.

This manual is also suitable for:

Vega 450Vega 650V6ffs 24v25aV4ffs 24v15aV4ffs 5v60aV4ffs 12v12a ... Show all

Table of Contents