User Manual

Page 24
EA Elektro-Automatik GmbH
Helmholtzstr. 31-37 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
www.elektroautomatik.de
[e-mail]
PSB 9000 2.5 kW Series
1.9.9 Analog interface
This 15 pole Sub-D socket on the back side of the device is provided for remote control of
the device via analog or digital signals.
If remote control is in operation this analog interface can only be used alternately to the
digital interface. However, monitoring is always available.
The input voltage range of the set values and the output voltage range of the monitor val-
ues, as well as reference voltage level can be switched in the settings menu of the device
between 0-5 V and 0-10 V, in each case for 0-100%.
1.9.10 “Share” connector
The 2 pole socket named “Share” on the back side of the device is provided for
connectiontoequallynamedsocketsoncompatibledevicesofdi󰀨erenttypeandis
used to achieve a balanced load current distribution while running the units in par-
allel connection. Following power supply and electronic load series are compatible:
• PSB 9000 3U / PSB 9000 Slave
• PSI 9000 2U - 24U / PSI 9000 3U Slave / PSI 9000 WR 3U / PSI 9000 WR 3U Slave
• ELR 9000
• EL 9000 B / EL 9000 B HP / EL 9000 B 2Q
• PSE 9000
• PS 9000 1U / 2U / 3U *
* Only from hardware revision 2, see type label (in case it does not show “Revision” on type label, it’s revision 1)
1.9.11 “Sense” connector (remote sensing)
In order to compensate for voltage drops along the DC cables to the load or external
source, the Sense input can be connected to the load or external source. The max-
imumpossiblecompensationisgiveninthetechnicalspecications.
• 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rmlytightenedall
time, no matter if the safety cover (only with models from 500 V) is mounted or not!
1.9.12 Master-Slave bus
There is a further set of connectors on the rear side of the device, comprising two
RJ45 sockets, which enables multiple identical devices to be connected via a digital
bus (RS485) in order to create a master-slave system. Connection is made using
standard CAT5 cables. These can theoretically have a length of up to 1200 m (3937
ft), but it’s recommended to keep the connections as short as possible.