Installation And Connections; Installation Notes - Toshiba G7 Operation Manual

Installation and Connections

The G7 True Torque Control
simple configuration settings. To operate properly, the G7 unit must be securely mounted and connected to
a power source (3 phase AC input at the L1/R, L2/S, and L3/T terminals). The control terminals of the G7
may be used by connecting the terminals of the Control Terminal Strip to the proper sensors or signal
input sources (see
connected to the motor that is to be controlled (see
Note: The optional ASD-Multicom boards may be used to expand the functionality of the
ASD. See the section titled
Upon initial system powerup, the Startup Wizard starts automatically. The Startup Wizard assists the
user with the initial configuration of the G7 True Torque Control Adjustable Speed Drive. See the
section titled
As a minimum, the installation of the G7 unit shall conform to Article 110 of the 1999 NEC, the
Occupational Safety and Health Administration requirements, and to any other local and regional
industry codes and standards.

Installation Notes

When a brake-equipped motor is connected to the ASD, it is possible that the brake may not release at
startup because of insufficient voltage. To avoid this, Do Not connect the brake or the brake contactor to
the output of the G7.
If a secondary Magnetic Contactor (MC) is used between the output of the ASD and the motor, it should
be interlocked such that the ST– CC terminals are disconnected before the output contactor is opened.
If the output contactor is used for bypass operation, it must be interlocked such that commercial power is
never applied to the output terminals of the ASD (T1/U, T2/V, or T3/W).
Do Not open and then close a secondary magnetic contactor between the ASD and the motor unless the
ASD is off and the motor is not rotating.
Note: Re-application of power via a secondary contact while the ASD is on or while the motor
is still turning may cause ASD damage.
The input voltage should remain within 10% of the specified input voltage range. Input voltages
approaching the upper and lower limit settings may require that the overvoltage and undervoltage stall
protection level parameters,
should be avoided.
The input power frequency should be ±2 Hz of the specified input frequency.
Do not use an ASD with a motor that has a power rating that is higher than the rated output of the ASD.
The G7 is designed to operate NEMA B motors. Consult with your sales representative before using the
ASD for special applications such as with an explosion-proof motor or applications with a repetitive type
piston load.
Do Not apply commercial power to the output terminals T1/U, T2/V, or T3/W.
Disconnect the ASD from the motor before megging or applying a bypass voltage to the motor.
Interface problems may occur when this ASD is used in conjunction with some types of process
controllers. Signal isolation may be required to prevent controller and/or ASD malfunction (contact your
Toshiba sales representative or the process controller manufacturer for additional information about
compatibility and signal isolation).
Use caution when setting the output frequency. Over speeding a motor decreases its ability to deliver
torque and may result in damage to the motor and/or the driven equipment.
6
2
Adjustable Speed Drive may be set up initially by performing a few
Table 1 on pg. 10). The output terminals of the ASD (T1/U, T2/V, and T3/W) must be
G7 Options on pg. 13
Initial Setup on pg. 27 for additional information on the Startup Wizard.
F626 and F629, be adjusted. Voltages outside of the permissible tolerance
Figure 15 on pg. 17).
for further information this feature.
G7 ASD Operation Manual