Operation
Ex p Control unit
APEX
py
Page 68 of 96
01-37A2-7D0006_py_Manual_Exp-Control-Unit_20210923_a_en.docx
Rev. 0
Select the “Pressure parameters” menu and enter the desired set points
for the optional pressure sensors “pa and pb“
e.g. pa – specify a trigger value of 2.00 mbar for pressure sensor A.
The corresponding Ex p equipment will be deactivated when falling
below 2.00 mbar at the measurement point.
Confirm the pop-up window with changed value(s)
Active pressure sensors are marked as active for the corresponding purge
program in the “Purge parameters/purge modes” menu.
Deactivate the programming switch
“Additional purging” function
The current inputs can also be used to activate additional purging on the Ex p
control unit. The Ex p equipment remains in the operating phase and purging can
also be repeated.
In order to use this function, the additional purging function must be activated
for the corresponding current input in the “Extended / sensors” parameters
menu.
4 mA = purging with active operating phase, 7 mA = normal operating phase
Procedure:
Connect the computer to the Ex p control unit
Activate the programming switch
Log into the WEB interface at the user level
Select the “Extended / sensors” menu
In the table displayed, you can activate the "Additional purge"
function under Current sensor 1 or Current sensor 2
Confirm the pop-up window with changed value
Deactivate the programming switch
Activate additional purge (Active useable during operation phase)
normal operation = 7 mA to current sensor input.
additional purge = 4 mA to current sensor input
Menu „Display“
In the Display tab, the contrast and
brightness of the LCD display can be
set on the p-Operator Panel.
