Aplisens WW-11ALW Manual do utilizador - Página 11
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8.
ELECTRICAL CONNECTION
8.1. Cable connection
All connecting and installation operations shall be performed with disconnected power
supply voltage and other external voltages, if used.
Failure to provide proper connection of the device may result in danger.
Risk of electric shock and/or ignition in potentially explosive atmospheres.
Figure 4. Connection diagram for WW-11ALW display without HART communication.
In the WW-11ALW display signal cables shall be led to the housing through cable ducts (cable
glands) and shall be connected to terminals (1), (2) and (3) of the terminal block according to the dia-
gram presented on the fig.4, 5 or 6 and the below table containing numbers of the terminals.
Maintain polarity of connection as in the following table.
Table 3. Table of markings of terminals in terminal block.
8.2. Cabling specification
Cables:
− unshielded cable is recommended when using only analogue signal;
− shielded cable is recommended for HART communication.
It is recommended to:
− connect display using twisted pair cable or shielded twisted pair cable;
− avoid leading conductors near power cables from the other cable systems;
− use earthing according to the recommendations.
Cross-section of wire of connecting conductor: ≤ 2,5 mm
Revision 01.B.003/2020.09
Polarization
Power supply
Transmitter
Terminal number
+
3
-
2
+
1
-
2
2
.
EN.IO.WW.11.ALW
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