Connecting The Asd; System Grounding; Power Connections - Toshiba G7 Operation Manual

Connecting the ASD

Refer to
DANGER!
before attempting to connect the ASD and the motor to electrical power.

System Grounding

Proper grounding helps to prevent electrical shock and to reduce electrical noise. The ASD is designed to
be grounded in accordance with Article 250 of the 1999 NEC or Section 10/Part One of the Canadian
Electrical Code (CEC).
The grounding conductor shall be sized in accordance with Article 250-122 of the NEC or Part One-
Table 6 of the CEC.
Note:
The input, output, and control lines of the system shall be run in separate metal conduits and each shall
have its own ground conductor.

Power Connections

DANGER!
L1/R, L2/S, and L3/T are the 3-phase input supply terminals for the ASD. The ASD may be operated
from a single-phase supply when derated (see
T1/U, T2/V, and T3/W are the output terminals of the ASD that connect to the motor.
An inductor may be connected across terminals PA and PO to provide additional filtering for the DC
pulses that are applied to the motor. When not used, a jumper is connected across these terminals (see
Figure 15 on pg.
Connect the input and output power lines of the ASD as shown in
Note:
Connect the 3-phase input power to the input terminals of the ASD at L1/R, L2/S, and L3/T. Connect the
output of the ASD to the motor from terminals T1/U, T2/V, and T3/W. The input and output conductors
and terminal lugs used shall be in accordance with the requirements listed in the section titled
Terminal Specifications on pg.
8
Installation Precautions on pg. 2
The metal of conduit is not an acceptable ground.
17).
In the event that the motor rotates in the wrong direction when powered up, reverse any
two of the three leads connected to the motor.
Figure 2. ASD/Motor connection diagram.
179.
and the section titled Lead Length Specifications on pg. 24
Single-phase Derating on pg.
Figure
23).
2.
Cable/
G7 ASD Operation Manual