6
Important Details
Technical specifications
Unpacking
Check the contents after unpacking for missing parts or
accessories and the unit for any apparent mechanical damages
and loose parts inside the unit. In case of a transport damage
please inform the seller immediately. In that case do not take
the unit into operation.
Commissioning
For safety reasons the unit may only be operated at a mains
power connection provided with a safety ground or via an
insulating transformer safety class 2. The air in- and outlets
on the back side may never be obstructed in order to ensure
proper cooling.
Mains power voltage selection and fuse replacement
Before putting the unit into operation make sure that the
available mains power voltage and the setting of the input
voltage selector on the back have the same value (115 or
230 V). If it is required to adjust the input selector to the mains
power voltage value, an input fuse with an appropriate voltage
value has to be
fi
t as well. The fuse may only be changed or
replaced whilst the unit is disconnected from the mains power
line. The fuse and the respective values are shown on the back
side of the unit.
General
The power supply series EA-PS 3000B (600 – 650 W output
power) is of primary switching technology and is provided with
a Power Factor Correction circuit (i.e. PFC, sinusoidal input
current). This series is distinguished by its compact built-up,
lightweight, excellent electrical values and extended operational
features, such as
fi
ne and coarse adjust of output voltage and
current, preset function for output voltage and overvoltage
protection (OVP) and the display of various operation
statuses. Cooling is provided via a temperature controlled fan.
Furthermore, this series features an analogue interface (0-10V)
for remote control and can, in addition, be
fi
tted with an external
USB interface adapter (EA-UTA12).
Controls and displays
Output voltage and current can be preset through coarse and
fi
ne potentiometers placed on the front panel or via 0…10V
through the analogue interface. The respective values are
shown on the 3-digit 7-segment LED meters or via the analogue
interface (0…10V).
Whilst pushing the preset button, the preset current and the
preset overvoltage protection value (i.e. OVP, setting through
the 10-turn potentiometer on the front), are displayed on the
LED meters.
The regulation mode is indicated via two LEDs.
LED CV = constant voltage mode
LED CC = constant current mode
Furthermore, the LEDs on the front panel show the following
operation conditions.
LED Standby
= Shut down by analogue interface
LED OVP
= Shut down by overvoltage (OVP)
LED OT
= Shut down by overheating (OT)
LED External = Analogue interface active
Output terminals
The output is provided through two safety sockets on the front
panel and in addition via screw terminals on the rear side. The
connections for “remote sensing” .i.e. to compensate the voltage
loss on the load wires, are placed on the rear side as well.
Input
Voltage
88...264V
Frequency
50 / 60Hz
Fuse
>0.99
T10A
Output
Voltage
- Fine adjustment range
0...32V
- Adjustment range
approx. 1.6V
- Stability 0...100% Load
<20mV
- Sta10% U
IN
<2mV
- Ripple
<10mV
rms
- Regulation 10...90% Load
<3ms
- Regulation 90...10% Load
<3ms
Current
- Adjustment range
0...20A
- Fine adjustment range
approx. 1A
- Stability 0...100% U
OUT
<50mA
- Ripple
<5mA
rms
Protection
- Overvoltage protection (OVP)
0...35.2V
- Overcurrent protection (CC)
0...20A
- Overtemperature protection (OT)
Output shutdown
Control elements
Voltage adjustment
Potentiometers coarse/
fi
ne
Current adjustment
Potentiometers coarse/
fi
ne
Overvoltage protection
Trimmer 10 turns
Preset OVP / Current
Pushbutton (Preset)
Indicators
Voltage
LED 7 segment, 3 digits
Current
LED 7 segment, 3 digits
Overvoltage protection
LED 7 segment, 3 digits
Status indication by
LEDs
Analogue interface
Inputs
Signal
Voltage 0...100%
0...10V
Current 0...100%
0...10V
Remote Control On/Off (SEL-
open collector
Output On/Off (Standby)
open collector
Outputs
Signal
Voltage 0...100%
0...10V
Current 0...100%
0...10V
Supply voltage (+VCC)
12...15V 100mA
Reference voltage (VREF)
10.0V 5mA
Overvoltage indicator (OVP)
open collector
Overtemperature indicator (OT)
open collector
Control mode (CV/CC)
open collector
Miscellaneous
Operating temperature
0...40°C
Storage temperature
-20...70°C
Relative humidity
<80% w/o condensation
Dimensions (WxHxD)
240x120x285mm
Installation dimensions (WxHxD)
240x132x325mm
Accessories
USB interface
UTA12
11
Attention! La masse du signal (GND) de l’interface analogique et la sortie négative (-) sont reliées
entre elles de manière interne. Si ces deux conducteurs dont le câblage a été effectué séparément
sont connectés à une unité de commande externe (automate programmable PLC, p. ex.) et à un
consommateur de courant, il faut absolument que ces conducteurs ne soient pas directement reliés
à cet endroit car il peut se produire une répartition du courant par l’intermédiaire de la masse du
signal de commande GND qui en règle générale est une connexion très mince !
Le problème n’apparaît pas si un isolement galvanique des signaux de commande est réalisé vers
la sortie, p. ex. en utilisant une interface CAN ou IEEE ou encore un ampli
fi
cateur de signaux.
Une des solutions à ce problème est illustrée ci-dessous. Pour mesurer la tension au niveau du consommateur
connecté, le dispositif de compensation de chute de tension « Remote Sense » est câblé.
Indication d‘emploi importante
Correcte
Erronée
Содержание PS 3032-20 B
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