6500 Series Purge and Pressurization System
I/O Manual
46
Input 1 function – The input terminal on the 6500 control unit can be used to active several functions as
listed below in the table
FUNCTION ACTION
DISABLED Nothing happens when input is active
IMMEDIATE SHUTDOWN When active, enclosure contacts immediately de-energize
regardless of shutdown time. This acts like a system reset.
OVERLOAD When active, enclosure contacts de-energize after shutdown
time has timed out
CONTROL PWR RELAY When active, the enclosure contacts energize (but only if in safe
condition after purging and enclosure is pressurized
CONTROL OUTPUT When active, control output contacts energize
CONTROL VALVE When active, either the DV or PV valve output is active. For the
PV, the value will go to 100%.
SYSTEM BYPASS When active, the system bypass is active. This will only work for
‘Bypass after purging’ and not before purging. Before purging is
only active through the user-interface
Default: DISABLED
INPUT SRM – when using switch inputs, a 6000-SRM (resistance network) can be added at the switch to
indicate when the wire going to the switch is short or open. Must be used with the 6000 SRM.
Settings: YES or NO
Default: No
INVERT INPUT? – When selection is ‘NO’, the input is active when the switch is closed. When selection is
‘YES’, the input is active when the switch is open.
Selection: YES or NO
Default: NO
PRESSURE AS INPUT – PRESSURE FUNCTION - If the DIGITAL valve is selected, then the function
can alarm/control the enclosure pressure between the ON and OFF PRESSURE in this section. If the
proportional valve is used, then the ON PRESSURE is used.
FUNCTION ACTION
DISABLED Nothing happens when if pressure is below ON PRESSURE
CONTROL OUTPUT The control output is active when below ON PRESSURE and de-
activated when above OFF PRESSURE
CONTROL VALVE The DV output is active when below ON PRESSURE and de-activated
when above OFF PRESSURE
OFF DELAY TIME – If the digital valve is selected, this function will keep the digital valve on for the user-
defined time after the off pressure is detected
Settings: 0 to 300 seconds
Default: 0 seconds
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