Electrical & Optical Interfaces

Station Plugs

The station plugs accommodate the cables and optical fibres provided by ESO at every station; the details of the implementation is given in Station Plug Interface[RD 14]

The main characteristics of the station plug are:

Cables

ESO provides the guiding and mechanical fixation of the cables connected between LCU and terminal blocks (in order to avoid mechanical stresses on electrical connections). All other cables as described in Installation of ESO cables [RD 17] shall be routed and mechanically fixed by the contractor, except Nasmyth and Pupil beacon fiber.

 

 

The cables labelling is described in [RD 17] It follows the template Ca ESO/b /c where:
a is a sequential number
b is the input connection location
c is the output connection location

The locations and their abbreviation is described in annex 3 of [RD 17] and in drawing Telescope control cabling path of AN01

 

PLC I/O

I/O characteristics description Input Output Remark
Siemens PLC on Transporter PNP Open collector  Load between output and ground
PHASE Drive controller NPN Totem pole Load between output and ground


Last modified: Mon Dec 18 10:22:04 MET 2000