Speaker
Markus Zerlauth
(AB-CO)
Description
Before installation in the tunnel, the powering interlock controller
(PIC) will be completely assembled and tested on all its
functionality on the surface. One powering subsector in the tunnel
will be managed by one dedicated powering interlock controller (two
in the case of the long arc cryostat). For this, a dedicated test
system is able to emulate all signals that the later on connected
systems will exchange with the PIC. Hardwired interfaces with the
power converters, the quench protection system, the AUG, the UPS
systems and the beam interlock controller are verified along with the
functionality of the PLC program and the communication with the
supervision application. After this surface validation, the PIC is
transported to the tunnel and installed in the foreseen rack. During
the phase of individual system tests (IST), the same procedures as
already performed on the surface are repeated. After the successful
termination, the interlock cables from the power converters and the
quench protection system are connected and the PIC functionality is
validated with the real clients, using automated procedures as
defined and prepared by SACEC (Software for Automated Commissioning
of Electrical Circuits). These tests are performed once with the
power converters still in short circuit (power cables not yet
connected to the current leads) and once after the connection to the
magnet string. Upon termination, powering tests can start for this
powering subsector.
Author
Markus Zerlauth
(AB-CO)
