RE 30017-B, Edition 11.2021, Bosch Rexroth AG
Product description |
SYDFED-2X, SYDFED-3X, SYHDFED-1X
35/96
At low operating pressures, the flow command value, which has been previously
provided by the control, is withdrawn from the slave pump via a changeover
contact suitable for small signal voltages (or, alternatively, a wear-free analog
switch), and the actual swivel angle value provided by the SY(H)DFED electronics
of the master pump is fed forward.
The pressure command value of the slave pump is to be set to 100 % (if required,
using a second changeover contact or by means of software) in order that closed-
loop pressure control of this unit is quasi switched off.
Now, the hydraulic short-circuit valve (connection of the previously separated
pressure circuits) can also be activated. The activation of this valve may have to be
delayed depending on whether this would improve the system characteristics in
the changeover process (the activation would also be conceivable with a hydraulic
switching delay).
In the master/slave operating mode it is also useful that the control keeps the two
swivel angle command values for the master and the slave pump synchronized in
order that striking differences in the signal level are prevented when the swivel
angle command value source for the slave pump is switched (from actual swivel
angle value of the master pump back to the control output).
The pressure command value of the slave pump should be set to the same level
as that of the master pump before the slave pump is changed over to individual
operation (jerk-free changeover).
All the analog inputs that are not used, e.g. actual pressure value input in the case
of flow control, must be connected to 0 Volt.
In contrast to this, differential amplifier inputs that are not used may also be
short-circuited.
5.10 DESCRIPTION OF THE COMMISSIONING TOOL
INDRAWORKS
The SY(H)DFED control system can be configured and parameterized in two
different ways:
1. Connection to an Ethernet-based field bus system. (For the selection of the
possible systems, see type code in the data sheet).
2. Use of the Bosch Rexroth software IndraWorks. For the SY(H)DFED system,
IndraWorks version 15V12 or a higher version must be used.
The IndraWorks Ds software is available free of charge on the Rexroth website in
the section “SY(H)DFED” under “Download“:
http://www.boschrexroth.com/sydfe
5.10.1 System requirements
Minimum requirements:
• IBM-compatible PC, at least Pentium IV
• CPU clock frequency 2 GHz
• RAM: 4 GB
• 5 GB free hard disk space on drive C: (incl. temporary memory for installation)
• DVD drive (if to be installed from DVD)
• Graphics resolution:
– 800x600 pixels
– Color depth 16 bits
Changing over to master/
slave operation
Deactivating master/
slave operation
Connection of unused
electrical signal inputs