Remote Sense Operation; Mains Undervoltage Or Overvoltage; Connecting Different Types Of Loads; Device Setup - Elektro-Automatik PS 8000 2U Bedienungsanleitung

Operating the device
7.7

Remote sense operation

Remote sense operation is used to compensate voltage drops
along the leads between power supply and load. Because this
compensation 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. For maximum compensation see technical
specifications. Also see figure 6 below.
7.8

Mains undervoltage or overvoltage

The device features an rectification with active PFC and a wide
range input. This means, it can be operated at input voltages of
approx. 90V...264V. Input voltages outside this range are consi-
dered as blackout, respectively as complete switch-off and will
store the last condition, as well as switch off the power output.
Attention!
Permanent input undervoltage or overvoltage must be
avoided!
Note
Models with 1500W nominal power will derate the output
power down to 1000W at input voltages below approx.150V.
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-
meters. It 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 sto-
rage of the settings is done the same way. Three elementary
settings are always available, see below. Other settings are only
available if a digital interface card is equipped.
Elementary settings:
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.
Parameter:
AI range
Settings:
0-5, 0-10
Meaning: selects the control voltage range to use with the
analogue interface. Further details in section 10.
Parameter:
Contrast
Settings:
50...100
Adjusts the contrast of the LCD display.
For all interface cards this setting applies:
Parameter:
Device node
Settings:
1...30
Meaning: Selects the device's address (i.e. device node, term
taken from the CAN terminology). When using the device on a
bus system (CAN or GPIB), every device must have a unique
address!
Date: 02-09-2012
EN
Default:
on
Default:
0-10
Default:
70
Default:
1
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