Trend NX Variable Speed Drives Manuale Utente Scaricare il pdf (Pagina 14)

Installation on a Trend System

2.2 Sample Applications

2.2.1 NX drive - stand alone

In this application the NX drive is supplied with 3 phase via a fuse and an

isolating contact. An alternative is to use a fused switch (shown dotted). The

start/stop contact connects terminals 6 to 8 to start the drive. The speed is set

by the voltage signal at terminals 2, 3.

The motor local isolator has an early break, late make contact in the circuit

between terminals 6 and 8. If the motor isolator is operated, the early break

ensures that the drive output is stopped before isolating the motor, and the

motor is connected before the drive output commences.

12 NX Variable Speed Drives Installation Manual TG200434 Issue 3/A 04/07/2006

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Trend NX Variable Speed Drives Manuale Utente Pagina 14