Technical Description - EA -PS 3032-05 B Mode D'emploi

General
The laboratory power supply series PS3000B is an ideal equipment for the use in R&D , schools (vocational training), maintenance
and production. The attractive design, the easy and intuitive handling and the rugged and reliable technology make this series an
ideal tool for technicians, engineers and their apprentices.
Adjustment of the output
Output voltage and output current can be set from 0 up to the max. value. Both operation modes, constant voltage (CV) or constant
current (CV), are selected automatically (auto crossover).
Load connection
The load can be connected through the safety sockets on the front or via screw terminals on the rear side.
Remote sense
The output voltage loss resulting from long DC output cables can be compensated by connecting the sense terminal (+ and – sense)
on the rear side with the + and – input terminals of the load. For this purpose please remove the jumpers from the terminals +
Sense and – Sense firstly.
Overvoltage protection (OVP)
The units are equipped with an overvoltage protection (OVP). The value can be adjusted with a screw driver between 0V...110% of
the rated output voltage. If the output voltage becomes higher than the preset value, due to a user's mistake or an internal defect,
the output will shut down and the LED OVP will light up.
Fan control and overtemperature protection (OT)
The series is equipped with a temperature regulated fan speed. In case the temperature of the transformer or the power stage
becomes too high, the output is switched off automatically. The LED OT (overtemperature) will light up. After cooling down the unit
will reset automatically.
Interfacing
The built-in analogue interface allows to control the unit externally through analogue signals (0-10 V)
With the external, optional interface UTA12 it is possible to control the unit via a personal computer. The software for this applica-
tion (UTA12) is provided.
Pin assignment analogue interface
Pin Name I/O
1 VSEL I Nominal value voltage
2 CSEL I Nominal value current
3 VREF O Reference value
4 DGND - Ground
5 SEL-enable I Select local / extern
6 OT O Overtemperature
7 NC - -
8 NC - -
9 VMON O Actual value voltage
10 CMON O Actual value current
11 AGND - Ground
12 +VCC O Supply voltage
13 Standby I Output on / off
14 OVP O Overvoltage
15 CV/CC O Voltage or current control
The grounds of the unit (AGND and DGND) are electrically connected to the positive output!
Internal schematic diagram analogue interface
© EA Elektro-Automatik GmbH & Co. KG , DE-41747 Viersen , Helmholtzstr. 31-33 , TEL. 02162-3785-0, FAX. 02162-16230

Technical description

Description
Low=Extern
Low=OK
Low=Off
Low=OK
Low=CV
Phasing
0...10V, input impedance >40k
0...10V, input impedance >40k
10V Imax.5mA
Ground for control and status signal
Open=Local Umax. 20V, Imax.2mA, U low <1V
Open=Error Umax. 20V, Imax.-25mA, Open Collector
-
-
0...10V, Imax.2mA
0...10V, Imax.2mA
Ground nominal and actual value, VREF
11...15V, Imax.100mA
Open=On Umax. 20V, Imax.2mA, U low <1V
Open=Error Umax. 20V, Imax.-25mA, Open Collector
Open=CC Umax. 20V, Imax.-25mA, Open Collector
7
Description, level, impedance