6500 Series Purge and Pressurization System
I/O Manual
61
IMMEDIATE SHUTDWN Immediate shutdown has to be active
to indicate an alarm
-Immediate shutdown has been
activated
OVERLOAD SHUTDWN Overload shutdown has to be active
to indicate an alarm
-Overload shutdown has been
activated
LOST FLOW During purging, if EPV-6500 vent
alarm is activated
-Purge supply capacity is not large
enough
- During purging, excess leakage is
ENCLS PWR RELAY Enclosure power relays are working
properly – two sets of contacts for
monitoring condition of contacts
-no power connected to the input of
the contacts
- Contacts are welded
TEMP INPUT 1 If the temperature input 1 is active -The temperature of the RTD is
outside the limits of the TEMP INPUT
1
TEMP INPUT 2 If the temperature input 2 is active -The temperature of the RTD is
outside the limits of the TEMP INPUT
2
Below are the fault descriptions:
Fault Description Cause
INPUT 1 Input 1 is not functioning properly Power for input is defective –
Defective EPCU
FLOW READING Flow reading from EPV-6500 vent is
corrupted or not available
-Flow readings are outside the range
of the EPV-6500 vent being used.
CONFIG STORAGE EPCU fault EPCU fault – defective EPCU
VENT 1 UPDATED EPV-6500 vent is not communicating -No EPV-6500 vent connected to
controller
- One or more of the connections
from EPV-6500 vent to controller is
not correct or not connected.
-EPV-6500 fault
CRC MISMATCH EPCU fault Mismatch of instruction set for
controller – defective EPCU
VALVE No power to the valve output EPCU fault – defective EPCU
VENT 1 FLOW UPDATE EPV-6500 is getting power but
communication is not correct
- One or more of the connections
from EPV-6500 vent to controller is
not correct or not connected.
-EPV-6500 fault
TEMPERATURE UPDATE RTD temperature reading is out of
spec or not reading
-RTD is defective
-No RTD connected to 6500
controller input
INTERNAL RAM EPCU memory fault -EPCU fault
15 Dismantling & decommissioning
Abide by all local and any other code requirements for disposing of electronic equipment. When disposing of any
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