VAT 642 Series - Sensor Supply Concepts

INSTALLATION Series
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24/107 Edition 2017-11-24 813316EB
4.5.2 Sensor supply concepts
Those valves offer 4 alternative concepts to supply the sensor(s) with power. This depends on the sensor
type and valve version that is used.
Concepts:
• External +24 VDC supplied to POWER connector is feedthrough to SENSOR connector to supply 24
VDC sensors. Refer to chapter «Power and sensor connection (+24 VDC sensors)» for schematic and
correct wiring.
o +24 VDC power to supply +24 VDC sensors via controller
o +24 VDC power to supply +24 VDC sensors externally
• External +24 VDC supplied to POWER connector is converted into ±15 VDC by the valve internal SPS
and supplied to SENSOR connector to supply ±15 VDC sensors. Refer to chapter «Power and sensor
connection (±15 VDC sensors) with SPS module» for schematic and correct wiring.
• External ±15 VDC power to supply ±15 VDC sensors without SPS option externally. Refer to chapter
«Power and sensor connection (±15 VDC sensors) without SPS module» for schematic and correct
wiring.
The SPS module can be retrofitted. Refer to chapter «Retrofit / replacement
procedure» for instruction.