TREND NX Variable Speed Drives - Manual (Page 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