Technical information

5 – PARAMETER DESCRIPTIONS
55
P17 Decel End Level CFN 16
LCD Display
CFN: Decel End
16 20 %
Range 99 – 1 % of phase angle firing (Default 20%)
Description Stop Mode set to Voltage Deceleration:
The voltage deceleration profile utilizes an open loop S-curve voltage ramp profile. When the Stop
Mode parameter is set to Voltage Decel, 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.
Note: The deceleration end level can not be set greater than the decel begin level.
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.
Stop Mode set to TruTorque Deceleration:
When the Stop Mode parameter is set to TruTorque Decel, 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 parameter on page 53
Decel Begin Level parameter on page 54
Decel Time parameter on page 56
Controlled Fault Stop Enable parameter on page 64
Theory of Operation section 8.4, Deceleration Control, on page 127