MNL000446.doc
Revision 00
09/19/2016
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
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valves are shown in red and closed valves are shown in green. The valve condition
colors conform to ISA standards.
Controller LEDs
Additionally, LEDs which display cabinet functions, are located to the right of the
LCD display. The table below describes these LEDs and their functions.
LED
Function
SHUTDOWN
ALARM
This LED flashes red on power up and for an un-
acknowledged shutdown alarm. Once acknowledged, the
LED stops flashing but remains red until it is reset.
FAULT ALARM
This LED flashes yellow on power-up and for a fault alarm.
Once acknowledged, the LED stops flashing but remains
yellow until it is reset.
GAS FLOWING
This LED lights green when process gas is flowing.
POWER
This LED indicates that there is +5 VDC power to the unit.