Ex p Control unit
APEX
mv
Electrical connections
Rev. 0
01-37A2-7D0005_MV_Manual_Exp-Control-Unit_2021005_0_en.docx
Page 41 of 80
6.2.2.5
Terminal row “X15”
ATTENTION
ATTENTION WHEN CONNECTING EXTERNAL SENSORS TO THE EX P
CONTROL UNIT.
Ensure functional safety when connecting external sensors to the Ex p
control unit!
The external sensors must meet the requirements placed on SIL 2.
Two functions can be executed at the optional current input as standard.
Firstly, an additional pressure sensor can be connected or a current signal can
be used to trigger purging without deactivation.
Pressure sensor for additional pressure monitoring. The function is set via the
WEB interface.
Pressure or gas sensors with 4...20 mA output can be
connected to the sensor input OS 1 [Ex ib].
The signal is processed depending on the setting of the
functions.
Terminal
Connection
Function
1
GND
Ground connection
2
OS1 Out
Sensor output
3
OS1 IN
Sensor input
4
24V OS1
Power supply sensor 1