Schneider Altivar 71 VW3A7201 handleiding

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Handleiding

34 1757361 06/2012

Configuration

The configuration of the jumpers provides various control possibilities and different internal functions in accordance with the specific error

messages.

Various definitions resulting from the specific configuration possibilities of the jumpers are explained in the following paragraphs.

"Autostart"

Jumper J1 closed: Autostart.

Autostart means that the device starts automatically one second after being connected to the line supply ("automatic power-up").

Configuration of the jumpers, see the table below.

If the braking unit must not start up automatically, even if the phase control is deactivated, terminals 7 and 8 must be linked until 4 seconds

after power-up. Then, to activate braking there must be a short pulse on the RESET input.

"Power-up" - "Stop"

"Stop" means that the control of the semi-conductors and the braking unit will be interrupted. It is no longer possible to brake the frequency

inverter with the braking unit.

"Power-up" is the activation of the control of the semi-conductors.

"Memorize"

The braking unit has a fault memory in which special faults can be assigned. Memorized error messages must be deleted using RESET or

by breaking the line supply. "Memorize" always results in a stop and tripping of the general fault relay.

"RESET"

When a fault has been deleted, if it was memorized, it must be reset to zero:

• Either by pressing the RESET button

• Or by disconnecting and reconnecting the line supply (three phase).

"Phase loss"

Phase loss supervision monitors the 3 phases of the line supply.

If one phase fails, the braking unit continues to operate, but with reduced generated power.

The braking unit reacts in different ways when there is a phase loss. One possibility is "two phase operation". The other is to allow the

system to exit operation and the general fault relay indicates the fault.

Configuration using the jumpers, see the table below:

0 Jumper open

⎯ Jumper closed

X Jumper in either position

Note: Fault memory "ON" means that the "phase loss" fault is indicated by an LED until it is cleared, if the fault no longer exists. Fault

memory "OFF" means that the "phase loss" fault is indicated by an LED only as long as the fault exists.

CAUTION

RISKS OF INTERFERENCE

Resetting to zero in the case of excessive DC bus voltage during generation is not

recommended. If this is performed, the power semi-conductors are exposed to

increased stress, which can result in accelerated aging.

Failure to follow this precaution can result in equipment damage.

J3 J5 J6 J7 Phase loss supervision

⎯00 ⎯ Sensitive, fault memory ON

⎯⎯⎯⎯Not sensitive, fault memory ON

0XX⎯ Stop, fault memory ON

0 X X 0 Stop, fault memory OFF

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