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4.5 Electrical connection
After installation, the electrical connection of the system components
is carried out. The following section describes the standard installa-
tion, in which the cable lines are configured as follows:
- Coaxial cable (RG 58) for all sensor cables
- Triaxial cable for all string lines.
This description applies only in a 'normal' industrial environment
characterized as follows:
- Frequency converters or their wiring must not be located near the
installed cables.
- Radio communication or remote control systems must not be in
operation near the installed cables.
- High-voltage cables must not be present in the VIBRONET cable
conduits, channels or ducts.
When electromagnetic interference is present near the installed ca-
bles, special cables and shielding measures are required (see 'Chapter
5: Special installations', page 37).
Cable loop
Be sure to leave approx. 30 cm / 12" of cable loop at all connections
(sensors, MUXes, basic unit) in order to avoid straining cable connec-
tions later during service and repair.
Details on cable connection procedures (coaxial, single-lead etc.) can
be found in chapter 8 (see 'Electrical cable', page 59)
Connecting sensors
Sensor end:
• Slide a suitable protective cap and filler material onto the sensor
cable prior to crimping.
• Crimp on a TNC connector (straight, angled).
• Connect the sensor cable to the sensor.
• Install a strain relief as needed.
MUX end:
• Open the MUX housing.
Observe the ESD protection regulations
Electrostatic discharges can damage circuit paths and components.
• Do not touch the board.
• Open a suitable fitting and insert the sensor cable into the MUX.
The first and last fittings and connection terminals in the MUX are
intended for string line connection.
• Shorten the cable to the proper length if necessary and insulate the
end. Do not forget to leave approx. 30 cm of cable loop.
NOTE
25
Installation
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