29th Symposium on Fusion Technology (SOFT 2016)

P2.067 A PCS7-based control and safety system for operation of the W7-X multi-purpose manipulator facility

6 Sep 2016, 14:20

1h 40m

Foyer 2A (2nd floor), 3A (3rd floor) (Prague Congress Centre)

Board: 67

Poster D. Diagnostics, Data Acquisition and Remote Participation P2 Poster session

Speaker

Guruparan Satheeswaran (Forschungszentrum Jülich GmbH)

Description

A multi-purpose manipulator (MPM) system is attached at an outer cryostat vessel port in the equato­rial plane to transport electrical probes and targets to the edge of the inner vessel. From this parking position where the tip of the probe coincides with the inner vessel wall a fully controlled movement into the edge plasma for all magnetic field configurations is feasible. The distributed control system (DCS) is based on Siemens Process Control System (PCS7), which is the recommended standard for machine and diagnostic control at W7-X. The main features for the PLC system at the MPM are the production and control of UHV conditions in the target exchange and intermediate chamber, the operation of the separate linear motion units for slow and fast motion, respectively, the temperature monitoring of the probe head and custom target interface, the application of biasing voltage and gas injection. The PCS7 controls all functions of MPM operation and communicates with the W7-X central PLC. Inside the torus hall the operational status is visualized on a touch panel, where also predefined sequences, e.g. probe exchange, can be started. The whole function control for remote operation with plasma can be given to a virtual PC in the central diagnostic room. The parameters for stroke depth, velocity profile, biasing and gas injection are freely selectable within mar­gins. The actions even for several strokes are triggered from the central timing of W7-X. The paper describes the layout of the electrical system and the control structure for the MPM with Siemens S7 under the framework of PCS7.