BUSCH R5 - External Inlet Pressure Sensor

5 | Installation
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5.2.5 External Inlet Pressure Sensor
An external inlet pressure sensor can be connected to the Control Unit. To control the
machine with an external sensor:
– Mechanically fit the Pressure Sensor at the desired location upstream of the vacuum
pump inlet (on a vacuum vessel or in the vacuum chamber for instance).
– Electrically connect the external pressure sensor to the control unit (CU): connection
terminals X1-24V and X1-36 for 4 – 20 mA signal (see wiring diagram T511205926
in the control unit cabinet).
– Set the sensor parameters and enable the External inlet pressure sensor control in the
“Advanced settings” menu of the User Interface, refer to the specific document
"Pump Control Instructions, art. no.: 0870213261". This parameter is only available
for “Role 3” users, see Role and User [►12].
NOTE
• Use an ECM cable gland and a shielded cable.
• Connect the cable shielding according to the state of the art (refer to the instructions
of the cable gland manufacturer).
• It is not possible to install the Inlet filter condition monitoring kit if an external inlet
pressure sensor is already connected to the Control Unit of the machine.