5 Connecting to power supply
5
Connecting to power
supply
5.1
Preparing the connection
Safety instructions
Always keep in mind the following safety inst-
ructions:
Warning:
Connect only in the complete absence
of line voltage.
•
The electrical connection must only be
carried out by trained personnel authorised
by the plant operator.
•
If overvoltage surges are expected, overvol-
tage arresters should be installed.
Voltage supply
Power supply and current signal are carried on
the same two-wire cable. The operating voltage
can differ depending on the instrument version.
The data for power supply are specified in chap-
ter "Technical data".
Provide a reliable separation between the
supply circuit and the mains circuits according
to DIN EN 61140 VDE 0140-1.
Keep in mind the following additional factors
that influence the operating voltage:
•
Lower output voltage of the power supply
unit under nominal load (e.g. with a sensor
current of 20.5 mA or 22 mA in case of fault)
•
Influence of additional instruments in the
circuit (see load values in chapter "Technical
data")
Connection cable
The instrument is connected with standard
two-wire cable without screen. If electromagne-
tic interference is expected which is above the
test values of EN 61326-1 for industrial areas,
screened cable should be used.
28
5.2
Wiring plan
Wire assignment, connection cable
Abb. 24: Wire assignment in permanently connected
connection cable
1
Brown (+) and blue (-) to power supply or to the
processing system
2
Shielding
6
Set up Bluetooth connec-
tion with smartphone/tablet
6.1
Preparations
System requirements
Make sure that your smartphone/tablet meets
the following system requirements:
•
Operating system: iOS 8 or newer
•
Operating system: Android 4.3 or newer
•
Bluetooth Smart from 4.0
Download the app "VEGA Tools" from the Apple
App Store or Google Play Store to your smart-
phone or tablet.
6.2
Connecting
Connecting ...
Start the "VEGA Tools" app and select the func-
tion "Setup". The smartphone/tablet searches
automatically for Bluetooth-capable instruments
in the area.
The message "Searching ..." is displayed.
The found instruments will be listed on the left
side of the adjustment window. The search is
continued automatically.
Select the requested instrument in the device
list.
The message "Connecting ..." is displayed.
Authenticate
For the first connection, the operating device
and the sensor must authenticate each other.
After successful authentication, the next con-
nection functions without authentication.
VEGAPULS WL S 61 • 4 ... 20 mA
1
2