GEA T.VIS E-20, Инструкция по эксплуатации

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6.4.3.3 Wiring diagram T.VIS E-20
Hint!
Check the assignment of the wires before connecting the cables!
External control (non Ex-area) Control top T.VIS E-20 (Ex-area)
Fig.19
Key to the wiring plan
Position Description
WD.1 Sensor module T.VIS E-20/Ex mat.no. 221-589.91
WD.2 Two NAMUR-sensors S1 and S2
WD.3
max. three solenoid valves 12VDC/Ex mat no. 512-177
or 24VDC/Ex mat no. 512-174
WD.4
Switch isolator for the connection of one NAMUR sensor
each in the intrinsically safe input circuit in potentially
explosive areas
WD.5
Valve control module (separating barrier) for connection
of one intrinsically safe solenoid valve each in potentially
explosive areas
The two sensors in the sensor module must be supplied with a NAMUR voltage
of 8.2 VC. Suitable switch isolators are used to make the sensor feedback signals
available to the higher-order control. The ignition protection type "intrinsically
safe" is guaranteed by these switch isolators and separation between Ex and
non-Ex area is given.
The solenoid valves are available in the voltage variants 12VDC or 24VDC in the
product range. The solenoid valves are supplied with the corresponding voltage
via suitable valve control modules.
Assembly and installation
Electrical connections
430BAL013985EN_6
56 25.04.2023