Instructions

Page 42
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PS 9000 3U Series
Examples of the type 1 terminal:
• 90° up or down
• space saving in depth
• no bending radius
• horizontal lead
• space saving in height
• large bending radius
2.3.6 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” to the load. The device recognizes the remote sensing mode automat-
ically and regulates the output voltage (only in CV operation) at the load rather than at its own DC output.
In the technical specications (see section „1.8.3. Specic technical data (400 V AC models)“) the level of maximum
possible compensation is given. If that is insu󰀩cient, the cable cross section must be increased.
Both pins „NC“ of the Sense connector must not be wired!
• Remote sensing is only eective during constant voltage operation (CV) and for other regulation
modes the sense input should be disconnected, if possible, because connecting it generally
increases the oscillation tendency.
• 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 (16.4 ft) 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 connected + to + and - to - at the load, otherwise both systems
may be damaged
Figure 10 - Example for remote sensing wiring