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ManualsBrandsEA ELEKTRO-AUTOMATIK ManualsLaboratory & Bench PSUsEA-PSI 8032-10 DT 1 Output 320W Programmable DC Power Supply, Switched Mode, Bench

Irrtümer und Änderungen vorbehalten

10.4 Functions of terminal System Bus

The 8pole terminal System Bus is located on the rear and is used

to connect leads for remote sense or to wire multiple devices for

series or parallel connection.

Pin assignment:

1 : Sense +

2 : Sense -

3 : Master output Current

4 : Master output Voltage

5 : Slave input Current

6 : Slave input Voltage

7 : Share Bus

8 : Ground

Attention! The functions of pins 3-8, as described in the

subsequent paragraphs, are only available at models

from 1000W output power.

Following wiring schemes can be realised:

10.4.1 Series connection in Master-Slave mode

For a series connection, it is recommended to use only devices

with identical output current, else the unit with the lowest nominal

outputcurrentwilldenethemaximumcurrentofthesystem.

Using the power supply

Caution! The maximum allowed 720V total

voltage of a series connection must not be

exceeded!

One unit is always the master of the next unit, which becomes

slave, and so on. When connecting more than two units, it is

recommended to consider one certain unit as master and any

other as slave. The slave(s) are controlled by the master via the

slave input pins 3 and 4 of the terminal System Bus. Voltage and

current can be controlled simultaneously, but also seperately.

For an example wiring see gure 4. Voltage and current are

here given by the master. In case only one of both, voltage or

current, is going to be controlled, the other set value should be

set to 100%.

Inordertocontrolthewholesystemremotely,itissufcientto

control the master via its analogue or digital interface. When

reading actual values, the current monitor value will represent the

overall system current, but the voltage monitor only the output

voltage of the master. In order to get accurate readings, either

the actual voltage is multiplied by the number of unit in the series

connection (only applicable if all are same type) or all units will

have to be read seperately.

Attention! In case one of the output poles is going to be grounded,

it is recommended for safety reasons to ground the pole with the

lowest potential, in this case minus output (-) of the master.

Attention! The system master must always be the unit with

the lowest potential!

Figure 5. Series connection in Master-Slave