Elektro-Automatik PS 8000 2U Serie Bedienungsanleitung Seite 39

Operating the device
7.7 Remote sense is active
Remote sense operation is used to compensate voltage drops
along the leads between the power supply and the load. Becau-
se this is limited to a certain level, it is recommended to match
the cross section of the load leads to the output current and
thus minimise the voltage drop.
The sense input is located on the rear, at terminal System
Bus, where the sense leads are connected to the load with
correct polarity. The power supply will detect the external sense
automatically and compensate the output voltage by the actual
voltage at the load instead of the output. The output voltage
will be raised by the value of the voltage drop between power
supply and load.
Maximum compensation: see „2.2 Technical specifications".
Also see figure 6 below.
7.8 Mains undervoltage or overvoltage occurs
The device features an active rectification with PFC and a wide
range input. This means, it can be operated at input voltages
of approx. 90V...264V, resp. 180V...264V at 3kW models. Input
voltages below 90V resp. 180V are considered as blackout,
respectively as complete switch-off and will store the last con-
dition, as well as switch off the power output.
Permanent input undervoltage or overvoltage must be
avoided!
Important! Models with 1500W nominal power will derate
the output power down to 1000W at input voltages below
approx.150V. At models with 3000W nominal power the derated
output power will be 2000W, starting at around 205V.
7.9 Connecting different types of loads
Different types of loads, such as ohmic loads (lamp, resistor),
electronic loads or inductive loads (motor) behave differently
and can retroact to the power supply. For example, motors
can induce a countervoltage which may cause the overvoltage
protection of the power supply to shut off the output.
Electronic loads have regulator circuits for voltage, current and
power that can counteract to the ones of the power supply and
may result in increased output ripple or other, unwanted side
effects. Ohmic loads are almost 100% neutral. It is recommen-
ded to consider the load situation when planning applications.
Figure 6. Wiring the sense
Instruction Manual
PS 8000 2U Series
8. Device setup
The device setup is intended to adjust certain operation para-
. Becau-
meters. Three elementary settings are always available:
•
AutoPwrOn
•
AI range
•
Contrast
Other settings are only available if a digital interface card is
equipped.
The device setup can only be accessed while the output is off.
Push both pushbuttons of the rotary knobs (also see section
6.3) simultaneously for longer than 2s. Leaving the setup and
storage of the settings is done the same way.
Following elementary settings are available:
Parameter:
AutoPwrOn
Settings:
on, off
Meaning: „on" --> device restores the last output state and set
values of last time the device was switched off or a blackout
occured. The purpose is to make the unit automatically continue
operation after a blackout.
„off" --> the output is switched on and the set values of U, UVL
and I are set to 0%, P to 100% and OVP to 110%, everytime
the unit is powered.
Name:
AI range
Settings:
0-5, 0-10
Meaning: selects the control voltage range to use with the
analogue interface.
Name:
Contrast
Settings:
50...100
Adjusts the contrast of the LCD display.
For all interface cards this setting applies:
Name:
Device node
Settings:
1...30
Meaning: Selects the device's address (device node is taken
from the CAN terminology). When using the device on a bus sy-
stem (CAN or GPIB), every device must have a unique address!
Default:
Default:
0-10
Default:
70
Default:
1
Date: 08-15-2011
EN
on
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