Rockwell Automation 1329L AC Induction Motors User Manual - Manual (Page 5)

AC Induction Motors 5
Drain Plugs
If motor is totally enclosed, it is recommended that condensation
drain plugs be removed. These are located in the lower portion of the
end-shields (not included on L180 frames). Totally enclosed “XT”
motors are equipped with automatic drains which should be left in
place as received.
Power Supply
This is an adjustable speed motor designed for operation with
adjustable frequency drives.
Verify that the motor nameplate data corresponds to the drive output
rating and follow the Drive User Manual for motor installation and
connection.
Conduit Box
The standard conduit box location for totally enclosed motors is top
mounted for F1-F2 versatility without motor disassembly. For drip-
proof force ventilated, F1 is standard. Conduit box can be rotated in
90 degree increments for lead outlet at front, back or sides. On L180
frame motors the conduit box is mounted on the top for all enclosure
types.
Mounting
Motors must be mounted on a rigid, solid base or foundation. Poor
base construction may cause resonances in the motor/base assembly
which can result in bearing failure and other motor damage. All hold
down bolts must be the correct grade for the type of mounting and
must be torqued to their recommended value.
Table A
Recommended Torque
Belted Drive
Motor slide bases or rails, when used, must be securely anchored to
the foundation with the proper bolts.
Important: The motor shaft and load shaft must be parallel and the
sheaves aligned. Refer to “Motor Application Data” on
page 11 .
Frame
Hole Diameter
mm (in.) Bolt Size and
Thread
Recommended Torque
SAE 5
N-m (lb.-ft.)
SAE 8
N-m (lb.-ft.)
L180 11.2 (0.44) 3/8-16 45-50 (33-37) 64-72 (47-53)
L210 11.2 (0.44) 3/8-16 45-50 (33-37) 64-72 (47-53)
L250 14.2 (0.56) 1/2-13 113-126 (83-93) 159-179 (117-132)
L280 14.2 (0.56) 1/2-13 113-126 (83-93) 159-179 (117-132)
L320 17.5 (0.69) 5/8-11 210-239 (155-176) 271-338 (200-249)
L360 20.6 (0.81) 3/4-10 372-420 (274-310) 527-597 (389-440)
L400 26.9 (1.06) 7/8-9 588-659 (434-486) 835-934 (616-689)