User manual

Using the power supply

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!

10.4.2 Parallel connection in Share Bus mode

Note: this operation mode suits best for constant voltage ope-

ration.

Attention! Only units of the same type (voltage and current)

must be used for this operation mode.

In order to increase the output current, two or more units of the

same type can be connected in parallel. Always take care for a

sufcientcrosssectionoftheloadleads!Preferrably,allleadsto

the load should be of same length and cross section.

Follwing connections are required: connect all (+) DC outputs of

the units to each other and all (–) DC outputs to each other. Pin

7 (Share Bus) and pin 8 (Ground) of terminal System Bus of

all units are also connected in parallel. In case remote sense is

also required, all Sense+ and all Sense - inputs are connected

in parallel and also with the load.

It isrecommended to deneone unitas master thatcontrols

voltage and current of the system. At any slave the set values of

voltage, current and power (if available) should be set to 100%.

All units displays their actual values, there will be no totals for-

mation of the system output current.

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 voltage monitor value will represent

the overall system voltage, but the current monitor only the output

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

actual current is multiplied by the number of units in the parallel

connection (only applicable if all have the same nominal output

current) or all units will have to be read seperately.

For an example wiring see gure6.

Figure 6. Parallel connection with Share Bus

Caution! A maximum allowed 720V total voltage

of a series connection must not be exceeded!