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DOK-SUPPL*-VEH*30.2***-PR03-EN-P
Rexroth IndraControl VEH 30.2 Hand-Held Terminal
Shielded connections
Shielding inside the control cabi‐
●
All shielding and filter measures (filtered power supply) in the
IndraControl VEH 30.2 are carried out directly on the printed circuit
board.
●
The special cable design guarantees noise immunity even for greater
connection lengths. I.e. the data lines (communication signals) are shiel‐
ded and in this way they are separated from the control lines (power
supply, enabling device, emergency stop, key switch etc.) inside the ca‐
ble.
●
Power supply lines in the control cabinet are usually unshielded. They
are therefore laid outside the IndraControl VEH 30.2 cable shield in or‐
der to prevent a coupling with the sensitive data lines.
●
The unshielded control and power supply lines are either filtered on en‐
try into the shielded housing of the IndraControl VEH 30.2 or separated
from the electronics in such a way that any interference signals carried
by these lines cannot affect the internal electronics of the
IndraControl VEH 30.2.
●
It is not necessary to lay the IndraControl VEH 30.2 cable separately.
The cable shield of the IndraControl VEH 30.2 cable can be considered to be
an extension of the IndraControl VEH 30.2 shielded housing (=printed circuit
board), via the VAC connection box, to the shielded housing of the communi‐
cation partner (e.g.: a PLC). From this it can be deduced that the shielded
connections from the cable shield to the device shields substantially contrib‐
ute to the interference immunity of the IndraControl VEH 30.2. It is not neces‐
sary to wire shielded connections to earth. The shield connection within the
IndraControl VEH 30.2 is realized via the cable shield, i.e. via the 17-pin con‐
nector. Connecting the IndraControl VEH 30.2 via a connection module guar‐
antees safe shielding protection right through to the communication partner.
All connection cables available from Bosch Rexroth guarantee correct shield‐
ing connection.
The connection of the IndraControl VEH 30.2 to the shield potential of the
plant must be carried out via the fine thread bolt of the VAC connection mod‐
ule (see
fig. 4-11 "Connecting the shield potential to a VAC connection mod‐
ule" on page
47).
Fig.4-11:
Connecting the shield potential to a VAC connection module
In many cases a range of interference sources, e.g. servo drive modules,
net
transformers, contactors and relays, is present in the control cabinet. There‐
fore it is necessary to run the cable shield from the connector housing (con‐
Bosch Rexroth AG
X1.1 X1.2
1
1
2
2
3
3
4
4
1
1
2
2
3
3
4
4
X2.1
X2.2
X3
FE
47/109
Technical Data
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