PowerTec 2000C Instruction Manual page 11

Page 1-4
is active). Braking force may be supplied by the motor by dissipat-
ing the energy into passive resistors connected after the control is
shut off (dynamic braking).
Regenerative motor controls are capable of supplying braking
force while the motor control is active. A motor rotating at a speed
which is faster than its control is commanding becomes a generator.
The amount of power generated is related to the speed, inertia, and
friction of the load and motor combination.
It is also proportional to the dissipative and/or storage load
presented by the controller, which must be adequate. The regenera-
tive control will accept current from the motor, and will dissipate
the energy received.
When energy is being generated by the motor, and being ac-
cepted by the controller, then the motor is said to be REGENER-
ATING. A motor in the regenerating mode develops torque in the
opposite direction of its rotation, and is not drawing power from the
supply, as it is in the motoring mode.
Regenerative power capability gives the motor and control the
ability to change from higher speeds to lower speeds much more
quickly than with non-regenerative types of controls, resulting in
more rapid stops and quick reversals of loads.
Model 2000C/3000C Instruction Manual