BENSHAW RediStart EXEXMVRMX3 Series, User Manual

Page: 81 / 222

z
NOTE:
It is important that the Rated Power Factor (FUN 06) parameter is set properly so that the actual
deceleration torque levels are the levels desired.
See Also Stop Mode (CFN 15) on page 70.
Decel End Level (CFN 17) on page 71.
Decel Time (CFN 18) on page 71.
Controlled Fault Stop Enable (PFN 25) on page 85.
Rated Power Factor (FUN 06) on page 103.
Theory of Operation section 7.4, Deceleration Control on page 131.
Decel End Level CFN 17
LCD Display
Range 1 – 99 % of phase angle firing (Default: 20%)
Description Stop Mode (CFN 15) set to Voltage Deceleration:
The voltage deceleration profile utilizes an open loop S-curve voltage ramp profile. The Decel End Level
parameter sets the ending voltage level for the voltage deceleration ramp profile. The deceleration ending
level is not a precise percentage of actual line voltage, but defines an ending point on the S-curve deceleration
profile.
A typical voltage decel end level setting is between 10% and 20%. If the motor stops rotating before the
deceleration time has expired, increase this parameter value. If the motor is still rotating when the
deceleration time has expired, decrease this parameter value. If the value is set too low a “No Current at Run”
fault may occur during deceleration.
z
NOTE: The deceleration end level cannot be set greater than the decel begin level.
Stop Mode (CFN 15) set to TruTorque Deceleration:
The Decel End Level parameter sets the ending torque level for the TruTorque deceleration ramp profile.
A typical TruTorque decel end level setting is between 10% and 20%. If the motor stops rotating before the
deceleration time has expired, increase this parameter value. If the motor is still rotating when the
deceleration time has expired, decrease this parameter value.
See Also
Stop Mode (CFN 15) on page 70.
Decel Begin Level (CFN 16) on page 70.
Decel Time (CFN 18) on page 71.
Controlled Fault Stop Enable (PFN 25) on page 85.
Theory of Operation section 7.4, Deceleration Control on page 131.
Decel Time CFN 18
LCD Display
Range
1 – 180 seconds
(Default: 15 sec)
Description The Decel Time parameter sets the time that the deceleration profile is applied to the motor and sets the slope
of the deceleration ramp profile. In voltage decel mode, this time sets the time to ramp from the initial decel
level to the final decel level.
z
NOTE : If the motor is not up to speed when a stop is commanded, the voltage decel profile begins at the
lower of either the decel begin level setting or at the motor voltage level when the stop is commanded.
Although the profile may be adjusted, the deceleration time remains the same.
In the TruTorque deceleration mode, the decel time sets the time between when a stop is commanded and
when the decel end torque level is applied.
71
6 - PARAMETER DESCRIPTION
CFN: Decel End
17
20 %
CFN: Decel Time
18
15 sec