Rockwell Automation FlexPak 3000 Digital DC Drive Version 4.3 - Manual (Page 185)

Glossary-3
rated full load current - Armature current in amperes.
retentive - Parameter value is stored in the drive even when power is off. To save
changes to the values, a Memory Save must be performed before removing power.
RPM - revolutions per minute. The number of times per minute the shaft of the motor
(machine) rotates.
service factor (SF) - hen used on a motor nameplate, a number that indicates how
much above the nameplate rating a motor can be loaded without causing serious
degradation. For example, a 1.15 SF can produce 15% greater torque than a 1.0 SF
rating of the same motor.
tachometer - Normally used as a rotation sensing device. Tachometers are typically
attached to the output shaft of a motor requiring close speed regulation. The
tachometer feeds its signal to a control loop, which adjusts its input to the motor
accordingly.
top speed - The highest speed a drive can achieve. Top speed equals base speed
when there is no field weakening.
torque - Turning force delivered by a motor or gearmotor shaft, usually expressed in
pounds-feet or newton-meters:
tunable - Input parameter whose value can be modified at any time (when the drive is
stopped, running, or jogging).
lb-ft HP
5250
RPM
------------- × Full Load Torque = =
Nm P(kW)
9550
RPM
-------------
× Full Load Torque = =