Allen-Bradley powerflex 700 Reference Manual

2-154 Regen Power Limit
Regen Power Limit The [Regen Power Lim] is programmed as a percentage of the
rated power. The mechanical energy that is transformed into electrical
power during a deceleration or overhauling load condition is clamped at this
level. Without the proper limit, a bus overvoltage may occur.
When using the bus regulator [Regen Power Lim] can be left at factory
default, –50%. When using dynamic braking or a regenerative supply,
[Regen Power Lim] can be set to the most negative limit possible (–800%).
When the user has dynamic braking or regenerative supply, but wishes to
limit the power to the dynamic brake or regenerative supply, [Regen Power
Lim] can be set to a level specified by the user.
Reset Meters The Elapsed kW Hour meter and/or Elapsed Time meter parameters are
reset when parameter 200 is set to a value not equal to zero. After the reset
has occurred, this parameter automatically returns to a value of zero.
0 = Ready
1 = Reset kW Hour Meter
2 = Reset Elapsed Time Meter
Reset Run Refer to Auto Restart (Reset/Run) on page 2-29.
RFI Filter Grounding Refer to “Wiring and Grounding Guidelines for PWM AC Drives,”
publication DRIVES-IN001.
S Curve The S Curve function of the PowerFlex family of drives allows control of
the “jerk” component of acceleration and deceleration through user
adjustment of the S Curve parameter. Jerk is the rate of change of
acceleration and controls the transition from steady state speed to
acceleration or deceleration and vice versa. By adjusting the percentage of S
Curve applied to the normal accel/decel ramps, the ramp takes the shape of
an “S”. This allows a smoother transition that produces less mechanical
stress and smoother control for light loads.
Linear Accel & Decel
Acceleration is defined as moving away from zero; deceleration is defined
as moving toward zero. The linear acc / dec ramp is active when the S
curve% is set to zero. The accel time and maximum frequency determine
the ramp rate for speed increases while decel time and maximum frequency
determine the ramp rate for speed decreases. Separate times can be set for
accel and decel. In addition, a second set of accel and decel times is
available. In this example Ta = 1.0 sec, Td = 2.0 sec and Maximum
Frequency is set to 60.0 Hz.
Vector
FV
200 [Reset Meters]
Resets selected meters to zero.
Default:
Options:
0
0
1
2
“Ready”
“Ready”
“MWh”
“Elapsed Time”

Allen-Bradley powerflex 700 Specifications

General

Brand	Allen-Bradley
Model	powerflex 700
Category	Controller
Language	English