Installation And Connections; Installation Notes - Toshiba G9 ASD Quick Start Manual

Installation and Connections

The G9 True Torque Control
simple configuration settings. To operate properly, the ASD must be securely mounted and connected to
a power source (3-phase AC input at the R/L1, S/L2, and T/L3 terminals). The control terminals of the
ASD may be used by connecting the terminals of the Terminal Board (P/N 072314P903) to the proper
sensors or signal input sources (see the section titled
System performance may be further enhanced by assigning a function to the output terminals of the
Terminal Board and connecting the terminals to the proper indicators or actuators (relays, contactors,
LEDs, etc.).
Note:

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 ASD.
If an 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 (U/T1, V/T2, and W/T3).
DO NOT apply commercial power to the ASD output terminals U/T1, V/T2, and W/T3.
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 connection is disconnected before the output contactor is opened.
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:
The ASD input voltage should remain within 10% of the specified input voltage range. Input voltages
approaching the lower or upper-limit settings may require that the overvoltage and undervoltage stall
protection level parameters be adjusted. Voltages outside of the permissible tolerance should be
avoided.
The frequency of the input power should be ± 2 Hz of the specified input frequency.
DO NOT use an ASD with a motor that has a power rating higher than the rated output of the ASD.
The ASD is designed to operate NEMA B motors. Consult with your Toshiba Sales Representative
before using the ASD for special applications such as with an explosion-proof motor or applications
with a piston load.
Disconnect the ASD from the motor before megging or applying a bypass voltage to the motor.
Interface problems may occur when an 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.
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Adjustable Speed Drive may be set up initially by performing a few
See the G9 ASD Installation and Operation Manual for a listing of the optional
ASD interface boards that may be used to expand the I/O functionality of the ASD.
Re-application of power via a secondary contact while the ASD is on or while the
motor is still turning may cause ASD damage.
I/O and Control on pg. 17
CAUTION
and Figure 9 on pg. 20).
G9 ASD Quick Start Guide