TT8900 OPT
–
Installation and Service Manual
Page 18 of 41
2.10
TT8900 OPT Cabinet Cable Entry Holes
The TT8900 OPT Internal Cabinet has provision for cable entry via seven holes located in the
base of the cabinet. The holes accept a standard plastic or metal 20mm cable gland.
Note: Unused holes must be fitted with blanking covers or sealed with a suitable tape to stop
insects entering the cabinet space.
2.11
Connecting the Power Supply Unit to the AC Mains Power
TT8900 OPT has been greatly simplified, now offering a much more
robust and quicker way to connect it to the mains power.
Follow these steps to correctly connect your TT8900 OPT to the
main power:
1.
Route the power cable from the customer
’
s junction box
inside the OPT, using one of the far-right cable entry holes
(conveniently located next to the PSU, as shown in
Figure 6
).
2.
Connect the Live (
brown
) conductor on the DIN rail mains
terminal
–
connector 1.
3.
Connect the Neutral (
blue
) conductor on the DIN rail main
terminal
–
connector 2.
Figure 5: TT8900 OPT Internal Cabinet Overall Dimensions
Figure 6: TT8900 OPT
Mains Power Connection