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Hyquip Limited New Brunswick Street Horwich Bolton Lancashire BL6 7JB UK
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32/60 Installation
Bosch Rexroth AG
, VT-VPCD, RE 30028-B/09.13
7.5.1 Installing the local bus
The local bus provides the connection between the individual electronics of the
HACD family.
You can use the local bus to configure another card connected to the local bus
with the help of Bodac.
However, never send firmware over the local bus to another electronics card to
update the latter.
You can connect up to 32 stations. A clear bus address must be assigned to each
control electronics.
The connection is established using a CAN protocol with a baud rate of 250 kbit.
The maximum length of the most distant control electronics must not exceed 280 m.
Moreover, the maximum length of the branch lines of 1 m must be observed.
The data are transmitted over a shielded twisted-pair cable.
For the setup, two bus terminal resistors of 120 Ohm are required.
Fig. 14: Schematic structure of “local bus“
7.5.2 Connecting solenoids and sensorics
▶
Lay solenoid cables of the proportional valve separately, away from other cables;
in particular, they must be separated from cables of the inductive position
transducers.
We recommend the use of shielded solenoid cables. Recommended cable type:
LiYCY 1.5 mm
2
up to 50 m length.
When double-shielded cable is used, the outer shield can be terminated at the
entry into the control cabinet, the inner shield can be terminated at the control
electronics.
Max. length = 280 m
Branch line
max. 1 m
d28 z10
d24
d28
z10
ID 1
ID 2
ID 32
z10
d28
d24
d24
Bus
terminating
resistor
Solenoids of the
proportional valve
