Sequence Of Events; Turning On Power To The Enclosure - Pepperl+Fuchs 6000 SERIES Installation And Operation Manual

6000 Series Purge/Pressurization System

Sequence of events

Turning on power to the enclosure

Door open
input off or
not used
Immediate
shutdown
input off or
not used
Overload/temp
input off or
not used
No door
open
No immediate
shutdown
No
overload/temp
Vent pressure
>
minimum overpressure
<
maximum pressure
Vent flow
>
flow rate
Good vent
communications
No system
fault
Purge
settings
not changed
Aux relay 1
lock door
Purge
in
progress
Enable
timer
Control
Purge
power
timer
relay
Timer = 0
Lock 1
on or
unused
Aux relay 1
Aux relay 2
energized
lock door
I/O Manual
T
u
r
Door n
secure
p
o
w
e
r
o
n
Lock 2
on or
unused
Aux relay 2
energized
23