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Purpose

Use the following procedure to install the 821-00541 Accessory Kit, Rectifier Cable Kit for SBC7000 with the ON324834 ELTEK Power Shelf with System Controller to power an SBC 7000 with DC power supplies in facilities without a DC power plant.

Important Safety Information






Warning

Due to the size and weight of the SBC 7000 chassis, at least two people are required when lifting, mounting or unmounting the chassis.


To prevent damage from electrostatic discharge, an ESD strap is provided in the SBC chassis accessory kit. Refer to the page "Connecting Electrostatic Discharge Wrist Strap on SBC 7000" in the SBC Core Hardware Guide to install the wrist strap.

Prerequisites

  1. Mount the SBC 7000 ensuring a minimum of 1U of free space above the SBC. Refer to Rack Mounting the SBC 7000 Chassis for detailed instructions and options. 
  2. To ground the SBC 7000 chassis, mount the GND strap (ground cable). Refer to the section Connecting Power to SBC 7000 and Powering On for details on grounding the SBC 7000 chassis.

  3. Three L6-20R AC receptacles to power the ON324834 ELTEK Power Shelf.


    Note

    If there is sufficient space available above the SBC7000 (about 3-4 U), then install the AC cords, DC wiring, and chassis after mounting the ELTEK into the frame. If the space is tight, then it is easier to attach the AC cords, DC wiring, and chassis ground before mounting the ELTEK as explained in the following steps.

Installing the ELTEK Rectifier Pack

  1. Mount the three AC power cords on the back of the ELTEK Rectifier pack. The three AC cords have two ferrules and one ring terminal crimped on the load end.






    1. On the first AC cord, use the provided 4 mm X 8 mm SEMS screw to attach the Ring Terminal to the hole labelled 2 in the picture.
    2. On the first AC cord, attach the white wire ferrule to the L22 using 3 mm or 1/8” flat screwdriver at 0.6-0.8 Nm. Tug on the wires after tightening to make sure they are secure.
    3. On the first AC cord, attach the black wire ferrule to the L12 using 3 mm or 1/8” flat screwdriver at 0.6-0.8 Nm.
    4. On the second AC cord, use the provided 4 mm X 8 mm SEMS screw to attach the Ring Terminal to Hole labelled 1 in the picture.
    5. On the second AC cord, attach the white wire ferrule to the L21 using 3mm or 1/8” flat screwdriver at 0.6-0.8Nm.
    6. On the second AC cord, attach the black wire ferrule to the L11 using 3mm or 1/8” flat screwdriver at 0.6-0.8Nm.
    7. On the third AC cord, attach provided ferrules to the Black wire, White wire and Green wire.
    8. On the third AC cord, attach the white wire ferrule to the L23 using 3mm or 1/8” flat screwdriver at 0.6-0.8Nm.
    9. On the third AC cord, attach the black wire ferrule to the L13 using 3mm or 1/8” flat screwdriver at 0.6-0.8Nm.
    10. On the third AC cord, use the provided 4MMX8MM SEMS screw to attach the Ring Terminal to Hole labelled 3 in the picture.



    11. Secure all three cables using two zip ties to the grid opening on the back of the chassis.



      The dressed AC cords are shown below.



  2. Use the following procedure to connect the A and B DC cable pairs to the back of the ELTEK rectifier pack:
    1. Use the P1 driver to remove the two DC access cover screws on the back of the ELTEK. Remove the cover to access the DC studs.



    2. Connect the single Hole GND Lug to the back of the ELTEK in the M6 Stud hole labelled 1 in the picture and the two-hole GND Lug to FRAME GND.

      Note

      You must build cable to length to perform this step. Refer to the SBC7000 Chassis GND installation section on the page Connecting Power to SBC 7000 and Powering On for details.



    3. Remove the lower left 6 MM Nut on the ELTEK (labelled 2 in the image). Take the Single hole Lug side of the Black “B” Cable and place the single hole lug on the 6 MM Stud and tighten the 6 MM nut to 1.5Nm.

    4. Remove the next 6 MM Nut marked -F2 on the ELTEK (labelled 3 in the image). Take the Single hole Lug side of the RED “B” Cable and place the single hole lug on the 6 MM Stud and tighten the 6 MM nut to 1.5Nm.

    5. Remove the next 6 MM Nut from the lower left on the ELTEK (labelled 4 in the image). Take the Single hole Lug side of the Black “A” Cable and place the single hole lug on the 6 MM Stud and tighten the 6 MM nut to 1.5Nm.

    6. Remove the next 6 MM Nut marked -F1 on the ELTEK (labelled 5 in the image). Take the Single hole Lug side of the RED “A” Cable and place the single hole lug on the 6 MM Stud and tighten the 6 MM nut to 1.5Nm.

      The completed cabling connections are shown in the following figure.



    7. Use the two zip ties provided to secure feed A wires and then feed B wires, to the cable fastening bale on the chassis, as shown in the following figure.



    8. Replace the DC access cover and tighten the screws to 0.8-1.0 Nm.



  3. Feed the three AC plugs and DC cable pairs through the opening above the SBC 7000 before sliding the ELTEK into the space above the SBC 7000.
  4. Mount the ELTEK to the 19” rack with rack screws according to the rack present.



  5. Connect the remaining ends of the A and B DC cable pairs to the SBC 7000 DC power connections. Refer to Connecting Power to SBC 7000 and Powering On for details.
  6. Install two 75A breakers in the right two positions in the ELTEK. Select the OFF position as shown in the following figure.



  7. Plug in all three AC plugs into L6-20 receptacles to power the ELTEK.
  8. Flip the two 75A breakers to the ON position.
  9. When the ELTEK is fully powered, all three Rectifiers will have a Green LED light turned on as shown in the following figure.



    Note

    To correct any faults on the ELTEK rectifier pack, refer to the appropriate ELTEK documentation.

Eltek Reference

Tools and torque recommendations

The following figure depicts the tools and torque recommendations from ELTEK to perform the installation.

Location of terminals and cable connections

The following figure depicts the location of terminals and cable connections. Refer to the ELTEK documentation for more details.



The ESD Susceptibility symbol  warns of the presence of Ribbon devices susceptible to electrostatic discharge. Do not handle equipment without wearing a properly grounded ESD wrist strap.