Rockwell Automation T8xxx Application Note Trusted System Mechanical Build - Manual (Page 2)

Trusted TM
AN-T80003 Trusted
TM
System Mechanical Build
Issue 1 Feb 07 AN-T80003 2
Mechanical Assembly
The following steps defines a recommended procedure for fitting Trusted TM chassis and accessories
into a 19” rack.
1. Mount the Trusted
TM
Power Supply (T8240) into the swingframe as required. The T8240 Power
Shelves require T8247 support brackets to be fitted first and secured by fitting the first power shelf
with M5 x 12 Pan Head Taptite screws and large plain and crinkle washers through the support
brackets. The power shelf must then be secured to the support bracket using four M3 x 6 slotted
cheesehead screws or similar with a plain washer.
2. Mount the Trusted
TM
Controller and Expander Chassis into the swingframe as required. 2U of rack
height above and below each controller and expander chassis must be provided to allow the
installation of fan trays and vents. The chassis are secured in position using M5 x 12 Pan Head
Taptite screws and large plain and crinkle washers through the inner pair of holes on each chassis
mounting flange.
3. Mount a Trusted TM Fan Tray Unit above each chassis. Fixings are through the fan tray grille and
ears using 4-off M5 x Pan Head 12 Taptite screws, crinkle and M5 plastic cup washers. Fan tray
units must be fitted AFTER the module chassis to avoid fouling of the chassis power connector.
4. Check the alignment of the chassis and fan tray units on the front of the swingframe.
5. Fit plastic facia ears over the mounting ears of each module chassis. Fixings are M5 x 12 Pan
Head Taptite screws and crinkle washers.
6. Fit blanking plates to mask off unused rack space.
Swingframe
1. If a swingframe is used, it is possible to fit equipment
to the side of the assembly. Fit 5-off 220mm trunking
brackets to the handle side of the swingframe.
Fixings are M5 x 8 Pan Head Taptite screws with
large plain and crinkle washers. Example 220mm and
60mm brackets are shown right.
2. Fit 80W x 60H trunking to the brackets fitted in the
above step. Fixings are M5 x 8 Pan Head Taptite
screws with large plain and crinkle washers. The rear
edge of the trunking should align with the rear edge
of the brackets.
3. Fit a busbar to the trunking brackets, for DC
distribution.
Note: The busbar should be mounted as close as
possible to the power supply that is supplying
it. The length of the busbar is determined by
the requirements of the system. This may
result in additional trunking brackets being
required.
When determining the length of busbar required, note
the following:
a For output field power, each output Versatile
Field Termination Assembly (VFTA) and each
Field Termination Assembly (FTA) will require five busbar terminations.
b PSU to busbar feeds will require three busbar terminations.