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Hardware Installation
Shielding of cable connections on the IP 240
Warning
To ensure noise immunity, shielded twisted-pair cables must be used for all IP 240
connections (inputs, outputs, 24 V power supply).
The following applies to shielding of the connecting cables:
•
.The cable shields must be placed on a shield
bus near the cable entry in the cabinet.
•
Braided shields must be secured over as large
an area as possible direct to the shield bus
(for instance with metal cable clamps which
span the shield).
•
When using cables with foil shields, the
sheath wire incorporated in the shield must
be connected through as short a path as
possible (less than 3 cm) to the shield bus.
•
The shielding must be extended from the
shield bus to the module.
•
The
shield
bus
connected to the supporting bar, the cabinet,
and the central grounding point in the
cabinet.
•
The section entitled "Installation Guidelines"
in the S5-115U Manual, Edition 2, provides
detailed information on grounding the cable
shields.
Pin assignments for base connector X 1
d
b
M
PESP
ADB 0
ADB 1
ADB 2
ADB 3
IRA
ADB 4
IRB
ADB 5
IRC
ADB 6
IRD
ADB 7
ADB 8
ADB 9
ADB 10
ADB 11
BASP
M
4-6
must
be
conductively
z
Pin-Nr.
+5 V
2
4
RESET
6
MEMR
8
MEMW
10
RDY
12
DB 0
14
DB 1
16
DB 2
18
DB 3
20
DB 4
22
DB 5
24
DB 6
26
DB 7
28
30
32
To the module
Sheath wire
Shield bar
Cable with foil shield
and sheath wire
Foil shield
Cable sheath
Braided shield
EWA 4NEB 811 6120-02a
IP 240
Cable with
braided shield
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