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S
mart
P
anel
Hardware
© 2011 by Grossenbacher Systeme AG DVS 63067 V2.0
17
5.6 P
REPARING THE SHIELD CONNECTIONS
The preparation of the data and signal cables is an important factor for the
electromagnetic compatibility (EMC) of the SmartPanel, both in terms of
interference immunity and emission.
The
RS232
and
CAN
interface are connected via D-Subminiature plug
connectors in accordance with DIN 41652. Only use metal or metallised
connector casings with a cable clamp for strain relief fastened or clamped
on the connector. The clamping of the cable shield ensures an optimum
contact area and a low impedance connection with the connector casing of
the SmartPanel.
The following procedure is recommended for making the low-impedance
connection for the cable shield:
1. Strip the cable.
2. Shorten the exposed shield braid by approx. 3 cm.
3. Turn back the braid over the cable sheath.
4. Use a heat shrinkable tubing or rubber grommet to cover the exposed
cable sheath with the folded back shield braid so that 5 to 8 mm of
exposed cable shield is left at the sheath end and is cleanly covered at
the back.
5. Fit the connector
6. The cable is then fastened at the exposed shield braid and the cable
sheath below it directly underneath the cable clamp strap of the
connector casing.
Connection work should be carried out with special care
in order to ensure trouble-free operation.
The EMC values stated in the technical data can only be
guaranteed if the cables are prepared according to the
following specifications.
Metal or metallised
D-subminiature connector
Metallic
connector shroud
Fastening
screws
connector casing
Heat shrinkable
tubing for covering
the shield braid
Shield braid pulled
back over the
cable sheath
Strap for cable clamp
and contacting of the
cable shield with the
connector casing
DVS 63067-V3.0
Содержание SmartPanel SP-240
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