Schneider Altivar 71 VW3A7201 handleiding

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Handleiding

1757361 06/2012 27

Connection diagrams, fuses and associated cables

Use of the terminals

Terminals 1 to 4 (refer to the diagram above)

These terminals are connected to two volt-free relays (one is normally open, the other is normally closed) with a maximum load current of

5AAC or 3ADC.

Maximum voltage V DC, V AC.

The relay is shown in open position in the above diagram.

The relay closes if:

1 The line supply is OK

2 There is no fault

and possibly after an ON/RESET pulse.

After an OFF pulse, a general fault is displayed while the relay opens.

Terminals 5 and 6

These terminals are already used for supervision of the internal temperature of the heatsink.

Terminals 7 and 8

(use shielded cables only, maximum length: 1.5 m)

OFF signal

These terminals can be used for an external OFF signal (normally open contact) to stop the braking unit.

Terminals 9 and 10

(use shielded cables only, maximum length 1.5 m)

ON / RESET signal

These connections can be used for an external ON signal (normally open contact) to start/reinitialize the braking unit.

Terminals 11 and 12

(use shielded cables only )

These connections can be used for an external ON signal (external voltage of 12 - 24 V DC, for example from a PLC, short duration pulse)

to start or reinitialize the braking unit.

(Connect the "Plus" to terminal 11 and the "Minus" to terminal 12)

The OFF signal stops the braking immediately. If this is performed in generator mode, the drive trips immediately afterwards,

due to the excessively high voltage of the DC bus.

CAUTION

RISKS OF INTERFERENCE

Do not use external voltage in the connections of terminals 5 to 10: unexpected actions

and damage can occur.

Failure to follow these precautions can result in equipment damage.

General error relay

Terminals 5 and 6

connected internally to

temperature supervision

External OFF

External

ON/RESET

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