Motor application data, Maximum safe speed – Rockwell Automation 1329L AC Induction Motors User Manual User Manual
Page 11

AC Induction Motors
11
Epic Connector or Plain Cable Connections
Motor Application Data
Maximum Safe Speed
The speeds given in
are the maximum mechanically safe
operating speeds for frames with standard construction. These speeds
must not be exceeded under any condition. Motor control must hold
the maximum speed under any load condition including no-load
within the maximum safe speed. Drive systems whose design
characteristics inherently prevent the AC motor from exceeding the
motor maximum safe operating speed must prevent the motor from
exceeding the maximum safe speed if a single component failure
should occur.
Table B
Maximum Safe Speed
With special construction maximum safe speed may differ from the
above values. In all cases, the maximum safe speed is indicated on the
motor nameplate.
Important: Normal operating speeds must be limited to those listed in
order to meet nameplate rating and assure validity of
warranty.
Pin
Signal
Color
Pin
Signal
Color
1
Common
Black
6
5-15V
Red
2
B
Green
7
B (NOT)
Yellow
3
A
Blue
8
A (NOT)
Gray
4
Z
Violet
9
Z (NOT)
Orange
5
No Connection –
10
Shield
Braid
!
ATTENTION: The machinery builder and/or user are
responsible for assuring that all drive train mechanisms, the
driven machine, and process material are capable of safe
operation at the maximum speed at which the machine will
operate. Failure to observe these precautions could result in
personal injury.
Frame Diameter
Maximum Safe Speed
L180
7200 RPM
L210
5000 RPM
L250
5000 RPM
L280
5000 RPM
L320
4000 RPM
L360
3750 RPM
L400
3750 RPM
L440
2700 RPM