Ex p control unit
Motor purge controller
Commissioning
Rev. 0
01-37A2-7D0003_Operating instructions_MPC_20210923_0_en.docx
Page 69 of 96
Ex p settings – Automatic purging
8.1.4.1
“Purging program / Purging mode” setting
DANGER
DEATH OR SERIOUS PERSONAL INJURY DUE TO THE USE OF AN
UNSUITABLE PURGING MODE.
Risk of explosion:
Only activate purging programmes that are suitable for the
application.
Purging programs Ex_p_3, Ex_p_6, Ex_M_1 and Ex_M_2 are special
purging modes which must not be used for standard applications.
The purging mode as well as the sequence control can be adjusted within the
WEB interfaces “Purge parameters / Purge modes”.
The precondition for all purging programs is po > p1, so that the
other phases can be initiated.
Procedure
Connect the PC with the Ex p control unit and activate the programming
switch
Log into the WEB interface with the user level
Call up the menu “Purging parameters / Purging modes”
Select the applied purging program by clicking the left button
Purging program Ex_p_1 by clicking the button
Button changes from to
Confirm the pop-up window with the changed value
Activate the purging mode to “Automatic” by clicking the button .
Click on the button
Button changes from to
Confirm the pop-up window with the changed value
Enter the desired purging factor
The purging factor indicates how often the protected volume should be
flushed through, e.g. 5-fold purging means that a protected volume of 100
litres is purged through with at least 500 litres of purge gas.
Enter the value “5” and confirm with Enter.
Confirm the confirmation window
