Page 37
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
PSI 9000 DT Series
2.3.6
Grounding of the DC output
Grounding one of the DC output poles is permissible, but causes potential shift against PE on the opposite pole.
Because of insulation, there is a max. allowed potential shift defined for the DC output poles, which depends on
„1.8.3. Specific technical data“
2.3.7
Connection of remote sensing
•
Remote sensing is only effective 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 in-
creasing cable length. Clamp terminal
Sense
is suitable for cross section of 0.2 mm² (AWG24)
to 10 mm² (AWG8)
•
Sense cables should be twisted and laid close to the DC cables to damp oscillation. If nec-
essary, an additional capacitor can 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
Figure 13 - Principle example for remote sensing wiring
The connector Sense is a clamp terminal. It means for the remote sensing cables:
•
Insert cables: crimp sleeves onto the cable ends and simply push them into the bigger square hole
•
Remove cables: use a small flat screwdriver and push into the smaller square hole next to the bigger one to
loosen the cable clamp, then remove cable end
2.3.8
Connecting the analog interface
The 15 pole connector (type: D-sub) on the rear side is an analog interface. To connect this to a controlling hardware
(PC, electronic circuit), a standard plug is necessary (not included in the scope of delivery). It’s generally advisable
to switch the device completely off before connecting or disconnecting this connector, but at least the DC output.
Summary of Contents for PSI 9000 DT Series
Page 2: ......