Series 642
INSTALLATION
603685EA
Edition 2013-08-22
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4.5.2
Sensor supply concepts
This valve offers 3 alternative concepts to supply the sensor(s) with power. This depends on the sensor
type and valve version that is used. This valve is available with an optional sensor power supply module
(SPS) that converts 15 VDC from the 24 VDC.
Concepts:
Ex24 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.
External 15 VDC supplied to POWER connector is feedthrough to SENSOR connector to supply 15
VDC sensors. Refer to chapter «Power and sensor connection ( 15 VDC sensors) without optional
SPS module» for schematic and correct wiring.
Ex24 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 optional SPS module» for schematic and correct wiring.
This concept is only possible when SPS retrofit is installed.
Valve versions:
642. . - . .
G
. - . . . . and 642 . . - . .
H
. - . . . .
SPS module not included
642 . . - . .
A
. - . . . . and 642 . . - . .
C
. - . . . .
SPS module included
The SPS module can be retrofitted. Refer to chapter «Retrofit / replacement
procedure» for instruction.
