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Installation guidelines
Deutschmann Automation GmbH & Co. KG
44
UNIGATE fieldbus gateway for ProfibusDP V. 4.7
29.4.11
14.2.2
ProfibusDP communication interface
14.2.2.1 Bus line with copper cable
This interface is located on the module in the form of a 9-pin SUB-D socket on the front side of
the housing.
•
Plug the Profibus connector onto the SUB-D socket labelled "ProfibusDP".
•
Firmly screw the securing screws of the plug connector tight using a screwdriver.
•
If the module is located at the start or end of the Profibus line, you must connect the bus termi-
nating resistor integrated in the gateway. In order to do this, slide the slide switch to the posi-
tion labelled ...on...
•
If the module is not located at the start or at the end, you must set the slide switch to position
"off".
14.2.3
Power supply
The device must be powered with 10.8...30 V DC.
•
Connect the supply voltage to the 5-pin or optional 2-pin plug-in screw terminal in accordance
with the labelling on the front panel of the device.
14.2.4
Shield connection
The module features one contact point for equipotential bonding and the shield of the RS end.
The shield of the Profibus cable is connected to the equipotential bonding system via an RC
snubber circuit. This means that there are two electrically isolated shields in the device. This
guarantees higher interference immunity of the module since the "cable shield current" which
may be up to a few Amperes owing to potential differences between two bus users is not
discharged via the device.
If the device is subject to high mechanical or chemical stress, it is advisable to use a tin-plated
DIN-rail in order to ensure greater contact stability of the shield connection!
14.2.5
Equipotential bonding connection
•
The module’s connection to the equipotential bonding is automatically established when it is
put on the DIN-rail.
•
Connect the DIN-rail to the equipotential bonding rail with as low an impedance as possible.
Use a flexible earthing wire with a cross-section of at least 10 mm² for this.
14.2.6
Line routing, shield and measures to combat interference voltage
This Chapter deals with line routing in the case of bus, signal and power supply lines, with the
aim of ensuring an EMC-compliant design of your system.
14.2.6.1 General information on line routing
- Inside and outside of cabinets
In order to achieve EMC-compliant routing of the lines, it is advisable to split the lines into the fol-
lowing line groups and to lay these groups separately.
Содержание UNIGATE RS232/422
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