Bosch rexroth SYDFED 2X Series Manual page 57

Place of installation of
the pressure transducer
Mounting orientation of
the pressure transducer
Pressure transducer
HM20 (current)
Pressure transducer
HM20 (voltage)
Installation | SYDFED-2X, SYDFED-3X, SYHDFED-1X
Favorable places of installation of pressure transducers turned out to be not in the
direct vicinity of the pump, but, for example, downstream of the (flexible) pressure
hose:
• Always between pump and check valve (if fitted)
• Do not use minimess lines
The installation in port "MP1" of pre-load valve SYDZ is only possible with
pressure transducer HM20-2X/...F-C13 for reasons of dimensions. In this case,
it may be required to reduce the pressure controller gain due to higher
pressure pulsation.
We recommend suspended mounting of the pressure transducer so that bleeding
problems (and hence control oscillations) can be ruled out right from the start.
If, due to the installation orientation of the pump, a pressure transducer must
be installed "vertically" directly in the pump or in the pre-load valve, we
recommend another place of installation for the pressure transducer.
HM20 pressure transducers are provided with a 2-wire current interface and can
be connected to the pilot valve via connections X2M1 or X2M2.
The voltage supply for the pressure transducer must be provided in accordance
with the specification.
For more details on the pressure transducer, see data sheet 30272.
Pressure transducers of type HM20 are provided with a voltage output of 0...+10 V
as actual pressure value signal and can be connected to the pilot valve.
The voltage supply for the pressure transducer must be provided in accordance
with the specification.
For more details on the pressure transducer, see data sheet 30272.
RE 30017-B, Edition 11.2021, Bosch Rexroth AG
57/96