Chapter 6
– System Operation
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MNL000627
Revision 0
06/25/2019
Chemical Equipment
© Versum Materials US, LLC. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
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Versum Materials Confidential
Double-clicking anywhere on the alarm text box will clear the alarm. Once acknowledged, the
LED stops flashing, but remains red until it is reset.
A FAULT alarm LED flashes yellow when a fault alarm is present. Once acknowledged, the
LED stops flashing, but remains yellow until it is reset. If a light bar tower is available in the
system, a red section of light bar flashes when an un-acknowledged shutdown alarm is
present. Once acknowledged, the LED stops flashing, but remains red until it is reset. A
yellow section of light bar flashes yellow when a fault alarm is present. Once acknowledged,
the LED stops flashing, but remains yellow until it is reset.
If multiple alarms are present, alarms will scroll in the alarm box with an index and number of
alarms present in the cabinet at that time. The CG050 can be configured so that, when the
power at the CG050 is powered off, all alarms are activated at the I/O, which in turn, alerts
the process tool of a loss of power on the CG050.
Unacknowledged alarms are marked with keyword “**NEW**”. Even after an alarm is cleared
(by double clicking anywhere on alarm text box), if alarm condition exists in the cabinet, the
alarm will come back.
6.4.1 SHUTDOWN Alarms
When a shutdown alarm occurs, all operations are stopped, and all valves return to normal
state. In addition, alarm text message will be displayed, shutdown alarm LED will flash, and
relay output is sent to the IO connections so that signal can be sent to the process tool.
Figure 6-9: Shutdown Alarm Displayed
6.4.2 FAULT Alarms
When a fault alarm occurs, alarm text message will be displayed, fault alarm LED will flash,
and relay output is sent to the IO connections so that signal can be sent to the process tool.
Figure 6-10: Fault Alarm Displayed
