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6100 Series Manual
8 Alarm and Fault Conditions
The 6100 purge controller can indicate certain alarm and fault conditions when they happen. The alarm
condition is indicated on the display under the Alarm/Fault LED and will blink for an alarm and remain solid for
a fault. The alarm will not disengage enclosure contacts if they are on but can be directed to the AUX alarm
contact. The fault will disengage enclosure contacts.
Alarm Descriptions
Alarm
Description
Cause
NO SAFE PRESSURE
Enclosure pressure is below minimum
safe pressure
-No purge supply
-Enclosure leakage too great
MAX PRESSURE
Enclosure pressure is above the
maximum pressure allowed
-Purge supply pressure too much
-EPV-6100 vent is blocked or not
installed
LOW PRESSURE
Enclosure pressure is below the
alarm pressure but above the min.
safe pressure
-Purge supply capacity is not
keeping up
-Enclosure is starting to leak more
INPUT 1-4 BROKE/SHORT When SRM is selected, then a wire is
broken or shorted going to the switch
input
-SRM is selected and not installed
on the switch input
-Broken or shorted wire to switch/
SRM
DOOR OPEN
Causes the purge system to reset and
will not start again until clear
- Signal from switch input activated
door open
-Shorted wire going to switch input
with no SRM selected
IMMEDIATE SHUTDOWN
Causes the purge system to reset and
will not start again until clear
-Signal from switch input activated
immediate shutdown
-Shorted wire going to switch input
with no SRM selected
OVERLOAD SHUTDOWN
Does not reset purge system but can
sound an alarm
Signal from switch input activated
immediate shutdown
-Shorted wire going to switch input
with no SRM selected
LOST FLOW
During purging, if EPV-6100 vent
detects a flow lower than expected,
alarm is activated
Signal from switch input activated
immediate shutdown
-Shorted wire going to switch input
with no SRM selected
13V
Power to internal bus is too low for
components to operate properly
-Defective EPCU
9.5V
Power to the I.S. comm bus for vent,
UIC, Temp Hub is too low for proper
operation
-Defective EPCU
-I.S. barrier board fuse is blown
TEMP INPUT 1
Temperature Input 1 is active
-The temperature of the Temp Hub
or Temp sensor is outside the limits
TEMP INPUT 2
Temperature Input 2 is active
-The temperature of the Temp Hub
or Temp sensor is outside the limits
ENCLOSURE POWER
RELAY
Monitor circuit detects relay
malfunctioned
-One of the contacts are welded
shut
Alarm and Fault Conditions