Installing support rails for the control enclosure

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Before you install the control enclosure into the rack, you must first install the support rails for it.

To install the support rails for the control enclosure, complete the following steps.

  1. Locate the control enclosure rails, as shown in Figure 1.
    The rail assembly consists of two rails that must be installed in the rack cabinet.
    Figure 1. Control enclosure support rails
    Image of control enclosure support rails
  2. Working at the front of the rack cabinet, identify the two standard rack units (2U) of space in the rack into which you want to install the support rails.
    Figure 2 shows two rack units with the front mounting holes identified.
    Figure 2. Hole locations in the front of the rack
    This figure shows the hole locations in the front of the rack when you install the rails.
    •  1  Upper rail-mounting bracket pin
    •  2  Lower rail-mounting bracket pin
    •  3  Rack mounting screw hole
  3. Ensure that the appropriate bracket pins are installed in the front and rear bracket of each rail.
    Each rail comes with four medium pins preinstalled (two in the front bracket and two in the rear bracket). Large pins are provided separately. Use the pins that are appropriate for the mounting holes in your rack, as described in Table 1.
    Table 1. Selecting bracket pins for your rack
    Mounting holes Bracket pins
    Round, unthreaded Use the preinstalled medium pins.
    Square Unscrew the medium pins and replace with the large pins that are supplied with the rails.
  4. At each end of the rail, grasp the tab  1  and pull firmly to open the hinge bracket.
    See Figure 3.
    Figure 3. Opening the hinge brackets
    Opening the hinge brackets
  5. Align the holes in the rail bracket with the holes on the front and rear rack cabinet flanges.
    Ensure that the rails are aligned on the inside of the rack cabinet.
  6. On the rear of the rail, press the two bracket pins into the holes in the rack flanges.
  7. Close the rear hinge bracket to secure the rail to the rack cabinet flange.
  8. On the front of the rail, press the two bracket pins into the holes in the rack flanges.
  9. Close the front hinge bracket to secure the rail to the rack cabinet flange.
  10. Close the rear hinge bracket to secure the rail to the rack cabinet flange.
  11. On the front of the rail, press the two bracket pins into the holes in the rack flanges.
  12. Close the front hinge bracket to secure the rail to the rack cabinet flange.
  13. Repeat the steps to secure the opposite rail to the rack cabinet.
  14. Repeat the procedure to install rails for each additional control enclosure.