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EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
PSI 9000 15U/24U Series
1.9.10
“Share” connector
This 2 pole WAGO connector on the rear side of the units is used by the master to
balance the load between all units. It must not be connected externally or used in a
different way and must always remain plugged at all units to ensure safe and proper
operation of the power supply cabinet. In case additional power modules are added
(where possible) to extend the available total power, the Share bus connection must
also be extended to integrate the additional unit(s). The required wires are not in
-
cluded with the new slave, but it is recommended to use the wire type, same colour
and same cross section.
1.9.11
“Sense” connector (remote sensing)
In order to compensate for voltage drops along the DC cables to the load, the Sense
input can be connected to the load. The maximum possible compensation is given
in the technical specifications.
•
In order to ensure safety and to comply to international directives, insulation of high voltage
models, i. e. such with a nominal voltage of 500 V or higher, is ensured by using only the two
outer pins of the 4-pole terminal. The inner two pins, marked with NC, must remain unconnected.
•
The two screws next to the Share bus and Sense connectors must remain firmly tightened all
time, no matter if the safety cover (only with models from 750 V) is mounted or not!
1.9.12
Master-Slave bus
A master-slave bus is provided on the rear side of the units, which enables the master
units to control the slave via the included standard CAT5 cables. The bus configu
-
ration is in permanent use and must not be modified, unless single slave units are
temporarily removed from the cabinet for repair or maintenance purposes. In these
situations it may be required to activate the bus termination feature, at least when
the master unit reports bus problems and missing slave(s).
The master-slave bus must not be connected to units outside of the cabinet!
