Varian Emergency Stop Interlock - Brainlab ExacTrac Planning Manual

SYSTEM INTERLOCKS AND STATUS SIGNALS
8.2.2

Varian Emergency STOP Interlock

Specifications
Intended use is to connect the ExacTrac system directly to the linac emergency OFF circuit if a
Varian linac with 3rd party motion interface is present.
Component
Cabling
Emergency OFF re-
quirements
Interface on the Ex-
acTrac system cab-
inet
Interface on Exac-
Trac system cabi-
net
Example Circuit for ExacTrac Connection to TrueBeam Linac
Exactrac cabinet
Site Planning Manual Rev. 1.0 ExacTrac Ver. 6.x
Description
Brainlab supplies a shielded 9pole SUB-D extension cable with max. 30 m
(cable 8a) to connect between the linac stand and the ExacTrac cabinet
(1.0).
You are responsible to fulfill local regulatory requirements with the emer-
gency OFF installation.
The timing requirements for motion stop are met with this installation.
Signalization logic
Connector type
Galvanic separa-
tion
ET Electronics Rack
ET ILK Insert
EMO
+ MEL_HW
In case of emergency OFF, the Varian linac de-energiz-
es the signal within the cable, which is detected by the
ExacTrac system.
9pol SUBD standard components
The Varian ILK interface on Brainlab's side is separat-
ed according to IEC 60601-1 for S.F.C: 250V AC (elec-
trical safety of medical devices)
Truebeam LINAC
Cable
8a
ET
Adapter
Figure 37
Interface
Connector
"J15"
(SUBD9)
83