Elektro-Automatik ELR 9000 HP, Operating Manual

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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
ea1974@elektroautomatik.de
ELR 9000 HP Series
1.9.10 Share connector
The 2 pole socket (“Share”) on the back side of the device is provided for connection
to equally named sockets on compatible electronic loads when establishing parallel
connection where symmetric current distribution is required, as well as compatible
power supplies to build a two-quadrants operation setup. For details about this feature
refer to „3.11.1. Parallel operation in master-slave (MS)“ and „3.11.3. Two quadrants
operation (2QO)“ . Following power supply and electronic load series are compatible:
•
PSI 9000 2U - 24U / PSI 9000 3U Slave
•
ELR 9000 / ELR 9000 HP / ELR 9000 HP Slave
•
EL 9000 B 3U - 24U / EL 9000 B HP / EL 9000 B 2Q
• PSE 9000
•
PS 9000 1U / 2U / 3U *
* From hardware revision 2, see type label (in case it does not show “Revision” on type label, it is revision 1)
1.9.11 Sense connector (remote sensing)
In order to compensate for voltage drops along the DC cables from the source, the
Sense input can be connected to the source. The maximum possible compensation
is given in the technical data.
1.9.11.1 Restrictions
Remote sensing is only intended for constant voltage (CV) operation and it is recommended to have the “ Sense ”
input only connected to the source when running the load in CV mode. Primarily in other regulation modes, but
also in CV, the sense cables can cause unwanted side effects, like oscillation, based on their length and induct -
ance. Also see
3.2.5
.
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.
1.9.12 Master-Slave bus
A further port is provided on the back side of the device, comprising two RJ45 sockets,
which enables multiple devices of the same model to be connected via a digital bus
(RS485) to create a master-slave system. Connection is made using standard CAT5
cables. It can theoretically have a length of up to 1200 m, but it is recommended to
keep the connections as short as possible.
1.9.13 GPIB port (optional)
The optional GPIB connector, which is available with option 3W, will replace the module
slot of standard version devices. The device then offers a three-way interface with
GPIB, USB and analog.
The connection to a PC or other GPIB port is done with standard GPIB cables from
stock, which can have straight or 90° connectors.
When using cable with 90° connectors, the USB port will be inaccessible.