Endress+Hauser RID14, Руководство по эксплуатации

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Wiring RID14
14 Hauser
5.1.1 Quick wiring guide
A0012751
ESD - electrostatic discharge
Protect the terminals from electrostatic discharge. Failure to observe this may result in destruction or
malfunction of parts of the electronics.
PROFIBUS PA
®
-
+
A0021496
 6 Terminal assignment
Terminal Terminal assignment
+ PROFIBUS® PA connection (+)
- PROFIBUS® PA connection (-)
5.2 Connection to PROFIBUS® PA
Devices can be connected to the PROFIBUS® PA in two ways:
• Via a conventional cable gland
• Via a fieldbus connector (optional, available as an accessory)
NOTICE
The device and fieldbus cable can be damaged by electrical voltage
‣
Switch off power supply before installing or connecting the device.
‣
It is recommended to ground the unit via one of the grounding screws.
‣
If the shield of the fieldbus cable is grounded at more than one point in systems that do
not have additional potential equalization, mains frequency equalizing currents can
occur that damage the cable or shield. In such cases the shielding of the fieldbus cable
is to be grounded on one side only, i.e. it must not be connected to the ground terminal
of the housing. The shield that is not connected should be insulated!
It is not advisable to loop the fieldbus via conventional cable glands. If you want to
replace just one measuring device at a later date, you will have to interrupt bus
communication.
5.2.1 Cable gland or cable entry
Please also observe the general procedure →  13