Programming K2 - Pepperl+Fuchs Bebco EPS 5500 Series User Manual

4.5.3

Programming K2

The K2 contact output can be programmed for various settings that are chosen by the
user.
For Type Z and Ex pz systems, power to the pressurized enclosure may remain on
if pressure goes below the minimum allowed pressure, but an audible and/or visual
alarm must be generated to notify the operator of a problem.
K2 can be used to generate the signal for the alarm when properly configured. Alarm
function based on any pressure point (P1 to P4 is not available when K2 is mapped
to K1, purging or bypass. Additionally, the K2/ALARM LED indication is not an alarm
indication when K2 is mapped to these functions.
When K2 is mapped to a function that is not an alarm for loss of safe pressure, the
power to the enclosure must be automatically removed, or an external method of
alarming is required.
User-Selectable Settings for K2
Setting
K1
P1+
P1-
P2+
P2-
P3+
P3-
P4+
P4-
FT (purging time)
Temp AL
BYPASS
ALARMS
1. *This mode is intended for use when the system is controlling a line-to-line power source into the protected enclosureand both power lines
need to be switched.
Function
Switches simultaneously with K1¹
Switches on when pressure exceeds P1
Switches on when pressure falls below P1
Switches on when pressure exceeds P2
Switches on when pressure falls below P2
Switches on when pressure exceeds P3
Switches on when pressure falls below P3
Switches on when pressure exceeds P4
Switches on when pressure falls below P4
Switches on when purge timer starts and shuts off at the end of purging
Switches on K2, if there is a temp alarm
Switches on when they bypass function is activated
Comes on when P1-, P4, Bypass, Temp AL
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