6.4.5
Connection of the Pressure Transducer
NOTICE
Malfunction of the DRn system due to use of a pressure transducer not suita‐
ble for the DRn system!
Damage to property!
●
Use only the pressure transducer set of the Bosch Rexroth HM20 series
included in the DRn system (see
chapter 1 "About this Documentation"
●
Assemble the pressure transducer in suspended position (hydraulic con‐
nection at the top). In this position the pressure transducer is optimally
ventilated.
●
Do not install an additional valve (except for check valve) in the line be‐
tween the pump and the pressure transducer (apart from the pre-load
valve).
●
If there is no pre-load valve in the system, you can assemble the pres‐
sure transducer directly at the pump or at the directional valve (possibly
control block).
●
Connect a pressure transducer with a sufficient line diameter (no mini‐
miss connections!).
●
Connect the pressure transducer at terminals AI2 and GND to the figure
below.
Fig. 6-13:
Connection of the pressure transducer
●
USE external 24 V power supply (not from EFC 5610).
●
USE ONLY shielded cables.
●
GND must be well connected.
●
The cable shielding must be well connected to the grounding
terminal.
Bosch Rexroth AG
DOK-SYTROX-DRN5020****-IT05-EN-P
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Frequency-Controlled Pump Drive System Sytronix DRn 5020
Assembly and Installation