Chapter 7 - System Description
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MNL000301.doc
Revision 2
01/04/2019
SourceSystem TE11
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
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7.7
GASGUARD® TE11 Controller
The GASGUARD® TE11 controller is a Siemens S7-1215 PLC based unit housed in a custom
designed metal enclosure. It continuously monitors system inputs and automatically performs purging
operations by sequencing valve actuation. Adequate purging is ensured by checking pressure and
vacuum at each step within the purge cycles. The controller also has the capability of shutting down
the system if an unsafe condition arises.
The controller screen allows the operator to easily understand the operation and to quickly
identify operating problems. Closed valves are indicated in green (default), open valves are
indicated in red (default). The controller status is displayed at the top of the screen. Shutdown
status is shown on the top left hand corner of the screen. Fault status is shown on the top right
hand corner of the screen. Pressing either the Fault or Shutdown box will display the relevant
alarms for each category.
Figure 7.4:
GASGUARD® TE11 Controller