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14 H9 ASD Installation and Operation Manual
Installation and Connections
The H9 True Torque Control
2
Adjustable Speed Drive may be set up initially by performing a few
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
H9 ASD may be used by connecting the terminals of the Terminal Board to the proper sensors or
signal input sources (see the section titled
I/O and Control on pg. 21
and
Figure 9 on pg. 24).
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: The optional H9 ASD interface boards may be used to expand the I/O functionality of
the H9 ASD.
Installation Notes
When a brake-equipped motor is connected to the H9 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 H9 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 H9 ASD (U/T1, V/T2, and W/T3).
DO NOT apply commercial power to the H9 ASD output terminals U/T1, V/T2, and W/T3.
If a secondary magnetic contactor (MC) is used between the output of the H9 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 H9 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 H9 ASD is on or while the
motor is still turning may cause ASD damage.
The H9 ASD input voltage should remain within 10% of the specified input voltage range. Input
voltages approaching the upper or lower 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 current rating that is higher than the rated current of the
ASD.
The H9 ASD 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
piston load.
Disconnect the H9 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).
CAUTION