GX9 ASD Installation and Operation Manual 15
Installation and Connections
The GX9 ASD 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
L1/R, L2/S, and L3/T terminals). The control terminals of the ASD may be used by connecting the
terminals of the Terminal Board (P/N 48570) to the proper sensors or signal input sources (see the
section titled I/O and Control on pg. 20 and Figure 6 on pg 24).
Note: The optional ASD-Multicom boards may be used to expand the I/O functionality of
the ASD. See the section titled GX9 ASD Optional Devices on pg. 245 for more
information on the available options.
The output terminals of the ASD (T1/U, T2/V, and T3/W) must be connected to the motor that is to be
controlled (see Figure 19 on pg 30).
As a minimum, the installation of the ASD shall conform to Article 110 of the NEC, the Occupational
Safety and Health Administration requirements, and to any other local and regional industry codes
and standards.
The Startup Wizard assists with the initial configuration of the commonly used GX9 ASD parameters.
See the section titled Startup Wizard on pg. 60 for additional information on the Startup Wizard. The
Startup Wizard is launched by configuring the system to start the wizard automatically upon a system
restart.
Installation Notes
Do Not apply commercial power to the output terminals T1/U, T2/V, or T3/W.
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 (T1/U, T2/V, or T3/W).
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: Re-application of power via a secondary contact while the ASD is on or while the
motor is still turning may cause ASD damage.
Disconnect the ASD from the motor before megging or applying a bypass voltage to the motor.
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.
The ST-to-CC connection is further enhanced by the operation of the MS1 AUX relay circuit. The MS1
AUX relay circuit is normally open and closes the ST-to-CC connection (via ST1) only after normal
system power is available. The MS1 AUX relay circuit prohibits the ST-to-CC connection in the event
that the MS1 contactor fails to close during start up or if MS1 opens while the ASD is running.
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