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EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
PSI 9000 2U Series
2.3.7 Connection of remote sensing
In order to compensate, to a certain degree, the voltage loss in a DC cable, the device provides the possibility
to connect the remote sensing input “Sense” (rear side) to the load. The device recognizes the remote sensing
mode automatically and regulates the output voltage (only in CV operation) at the load rather than at its own DC
output. In the technical specifications (see section
„1.9.3. Specific technical data“
) the level of maximum possible
compensation is given. If that is insufficient, the cable cross section must be increased.
Both pins „NC“ of the Sense connector must not be wired!
•
The cross section of the sense cables is noncritical. However, it should be increased with
increasing cable length. Recommendation: for cables up to 5 m use at least 0.5 mm²
•
Sense cables should be twisted and laid close to the DC cables to damp oscillation. If neces-
sary, an additional capacitor should be installed at the load/consumer to eliminate oscillation
•
The sense cables must be con to + and - to - at the load, otherwise both systems
may be damaged
•
In master-slave operation, the remote sensing should be connected to the master unit only
Figure 7 - Example for remote sensing wiring
