Rockwell Automation 1329L AC Induction Motors User Manual User Manual

Page 8

AC Induction Motors

Direction of Rotation

These motors are capable of bi-directional shaft rotation. When
voltages in an A-B-C phase sequence are applied to leads U/T1, V/
T2, W/T3, clockwise shaft rotation facing the opposite drive end will
result. If shaft rotation is incorrect, change the direction of rotation as
follows:

1. Turn off and lockout all power to the motor. Verify that the

voltage at the motor leads is zero.

2. Reverse any two of the three motor power leads.

Thermostat Leads (Thermal Protector)

As a standard feature, these motors have three (3) normally closed
thermostats (one per phase) connected in series with leads P1 & P2
and terminated in the main conduit box.

To protect against motor overheating, thermostats must be connected
to the appropriate drive circuit (function loss). Failure to connect the
thermostats will void the motor warranty. Follow the Drive User
Manual for correct thermostat lead connections.

Blower Motor

Motors which are blower cooled incorporate an independently
powered three-phase AC blower motor to assure continuous cooling
air flow regardless of motor speed.

Blower motor fuse protection kits are required for blower motor
overload protection.

The specific blower motor will vary depending on frame size and
enclosure. Follow the connection diagram supplied with the blower
motor, which in general will be one of the following:

ATTENTION: The drive may apply hazardous voltages to
the motor leads after drive power has been removed. Verify
that the drive is incapable of delivering hazardous voltages
and that the voltage at the motor leads is zero before
proceeding. Failure to observe this precaution could result
in personal injury and/or death.

ATTENTION: The blower motor is typically wired to the
AC input of the drive and will be energized even when the
drive is not running. Remove and lockout the main power
supply before touching blower components. Failure to
observe this precaution could result in personal injury and/
or death.