BXKIK Presentation for PEM

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BXKIK Presentation for PEM

• T. Beukers
• 1/22/08

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BXKIK PURPOSE

• The BXKIK consists of a pulser system located in
  the sector 24 gallery (LKF24) and a magnet
  located in sector 25-3d.
• The kickers primary purpose is to kick beam onto
  a diagnostic screen to measure beam quality. For
  now LCLS can run without this system, but it
  should be repaired quickly if it fails.

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BXKIK Pulser System Photos
PLC
Pulser
Power Supply
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BXKIK Operation
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BXKIK Operation Continued

• Capacitor bank initially charged through charging
  switch (So) by power supply.
• The charging switch opens, then the firing switch
  (S) is closed to discharge the capacitors through
  the BXKIK magnet. The firing switch is opened
  after current reversal.
• No current reversal due to the over dampened
  circuit.
• The BXKIK is designed to run on standby mode
  whenever there is beam running, unless triggered
  to dump the beam.

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Ideal Waveforms

• Pulse sine wave width should be 1.14ms.
• I peak 2.6 x Vprogram - 2A

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BXKIK photos
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BXKIK Pulser Photos 2
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Modulator Controls

• Triggers are generated from SLAC via the SLAC
  timing system. All other controls are handled by
  the PLC.
• Must switch PLC to local for touch screen control
  of the modulator. Must switch to remote to give
  control back to operators.
• Local control allows you to adjust voltage and
  enable/disable the modulator
• In local or remote mode, the PLC touch screen can
  be used to monitor faults.
• The operations screen is usually the screen being
  viewed when approaching the BXKIK. A red status
  on the power supply, modulator, or magnet
  indicators indicates a fault with that device.
  If any of these are red, the system indicator
  will also show a red faulted status.
• By pressing the main button and then pressing
  the signal in button the interlock status of
  the system can be monitored.
• In March the PLC program and touch screen display
  will be updated to match the BYKIK system.

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BXKIK PLC Photo
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PLC Operations Panel
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PLC Main Screen
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PLC Signal In (Interlock Screen)
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BXKIK Faults

• Only attempt repairs if qualified to do so,
  otherwise contact engineering. Follow BXKIK ELP
  before working on BXKIK system.
• Interlocks include
• Magnet thermal switch fault. (Mag Int 1 and Mag
  Int 2)
• Check magnet connections and klixon connections.
  The magnet has two klixons.
• GND Fault (this includes ground current faults,
  and fast magnet over voltage faults).
• Reset the fault (press the reset button on the
  PLC) and notify engineering. If fault does not
  reset or recurs, replace the pulser. If
  replacement not yet available, contact
  engineering.
• Modulator thermal switch fault.
• Replace the pulser, if spare pulser not yet
  available
• Check if the fans are operating. If the fans are
  not operating check the fuse. If the fuse has
  not blown, then replace the fan.
• If the fans are operating, check if the system
  resets. If the system resets still notify
  engineering because the system should not over
  heat. If the system does not reset check if the
  thermal switch is broken.
• Cable connection fault
• This monitors whether or not the control cable
  connected from the PLC to the pulser is plugged
  in. In the BXKIK PLC system there is a logic
  problem with this interlock and the status is
  always red. This problem will be fixed when the
  PLC program is updated in March 09.

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BXKIK Faults Continued

• Interlocks continued
• PS OK
• This monitors the status of the power supply. If
  the power supply requires reset notify
  engineering. To reset the power supply first try
  putting the system in local mode and pressing the
  reset touch screen button. If this does not
  work, reset the power supply by cycling power on
  the PLC by unplugging and plugging back in the
  PLC. It may be necessary to turn off the power
  supply for 1 minute and then turn back on the
  power supply. This convoluted reset process will
  be fixed when the PLC is reprogrammed in March
  09.
• Check the fold LED indicator on the power
  supply is not blinking red. If the indicator is
  blinking red, the power supply experienced an
  over current condition on its output, likely
  inside the pulser. If this is the case contact
  engineering.
• Be sure when finished resetting the system that
  the green fold LED is illuminated. If not
  press the fold button to activate this feature.
  The current limit should be set to 5A. This can
  be checked by pressing the preview button and
  noting the right window reads 5A. Rotating the
  knob on the right of the supply alters the
  current limit. This protects the system from a
  shorted power supply output.
• Rate Error/Zero Rate
• These signals indicate that the power supply is
  receiving no triggers or a higher triggering rate
  then designed for. Neither of these situations
  cause the BXKIK to shutdown.
• Local/Remote
• This indicates whether the power supply is in
  local control mode or remote control mode.

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BXKIK Charging Power Supply

• This is a lambda Genesys 50-30 supply (50V,30A).
  
• The SW1 dip switch settings on the rear of the
  supply are 1up, 2down, 3up, 4up, 5down, 6down,
  7down, 8down, 9up.
• A spare supply is being purchased (PO submitted
  1/26/09)
• Important After resetting supply (see fault
  section of presentation for instructions), be
  sure the fold button is pressed if necessary to
  illuminate the green FOLD LED. The current limit
  should be set to 5A. This can be checked by
  pressing the preview button and noting the right
  window reads 5A. Rotating the knob on the right
  of the supply alters the current limit. This
  protects the system from a shorted power supply
  output.

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BXKIK PS PHOTOS
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BXKIK troubleshooting

• Only attempt repairs if qualified to do so,
  otherwise contact engineering. Follow BXKIK ELP
  before working on BXKIK system.
• The BXKIK requires 100us pulse width triggers to
  run. In the past operations has given the timing
  system pulses that are too short. The Charge
  NOT LED on the front of the pulser should be
  illuminated or blinking if the pulser is
  receiving triggering signals of proper length.
  Note that the Fire LED should only be on when
  the pulser is firing.
• If one of the 15V or -15V LEDs on the BXKIK
  front panel is not illuminated it is likely that
  one of the control voltage power supplies or
  output fuses failed. These power supplies and
  fuses are located within the PLC chassis. 5V in
  the modulator chassis is derived from the 15V.
  If the 5V LED is not illuminated but the 15V LED
  is illuminated the regulator chip on the control
  board may have failed or there may be a short on
  the control board. This would require replacing
  the pulser chassis or contacting engineering
  support.

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BXKIK Troubleshooting Continued

• If the PLC fails, a red warning light should
  illuminate on the PLC CPU module and PLC warnings
  should pop up on the touch screen. If the PLC
  does not reset after cycling AC power and
  registers internal errors on the screen, it is
  likely that the PLC has suffered an internal
  fault. Multiple repeated faults may indicate a
  failed CPU processor. It has been necessary to
  replace this CPU processor before.
• Engineering on call
• 1) Tony Beukers
• 2) John Krzaszczak
• 3) Craig Burkhart

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Status of Spares

• A spare power supply is being ordered (PO placed
  1/27/09).
• A spare pulser is being constructed.
• A spare PLC is being built. While there is no
  replacement PLC chassis, all PLC modules are
  replaceable and we have spares of each type.

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Documentation

• EI for system is released. All documentation
  should be officially released in February 09.
  The EI documentation has already been submitted.