Electrical connections
Ex p control unit
Motor Purge Controller
Page 44 of 96
01-37A2-7D0003_Operating instructions_MPC_20210923_0_en.docx
Rev. 0
6.2.2.4
Terminal row “X13”
ATTENTION
CAUTION WHEN CONNECTING EXTERNAL SENSORS TO THE EX P CONTROL
UNIT.
When connecting external sensors to the Ex p control unit, please ensure
functional safety!
The external sensors must meet the requirements of SIL 2.
The "optional sensor" function is only available with the Ex p control
unit APEXmpc.
As standard, two functions can be carried out on the optional current input.
On the one hand, an additional pressure sensor may be connected, or flushing
can be triggered without deactivation by means of a current signal.
Pressure sensor for additional pressure monitoring. The function is set via the
WEB interface.
Pressure or gas sensors with a 4… 20 mA output may be
connected to sensor input OS 2 [Ex ia].
The processing of the signal takes place depending on
the setting of the respective functions.
Terminal
Connection
Function
1
GNDiso
Ground connection
2
OS2 Out
Sensor output
3
OS2 IN
Sensor output
4
24V OS2
Power supply sensor 2
