description of parameters vacon • 63
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7
611 Torque limit control I-gain
(2.8.3)
This parameter determines the I-gain of the torque limit controller. It is used in Open
Loop control mode only.
612 CL: Magnetizing current
(2.5.18.1)
Set here the motor magnetizing current (no-load current). See chapter 9.1.
613 CL: Speed control P gain
(2.5.18.2)
Sets the gain for the speed controller in % per Hz. See chapter 9.1.
614 CL: Speed control I time
(2.5.18.3)
Sets the integral time constant for the speed controller. Increasing the I-time increases
stability but lengthens the speed response time. See chapter 9.1.
615 CL: Zero speed time at start
(2.5.18.9)
After giving the start command the drive will remain at zero speed for the time defined
by this parameter. The ramp will be released to follow the set frequency/speed refer-
ence after this time has elapsed from the instant where the command is given. See
chapter 9.1.
616 CL: Zero speed time at stop
(2.5.18.10)
The drive will remain at zero speed with controllers active for the time defined by this
parameter after reaching the zero speed when a stop command is given. This parameter
has no effect if the selected stop function (ID506) is
Coasting
. See chapter 9.1.
617 CL: Current control P gain
(2.5.18.15)
Sets the gain for the current controller. This controller is active only in closed loop and
advanced open loop modes. The controller generates the voltage vector reference to the
modulator. See chapter 9.1.
618 CL: Encoder filter time
(2.5.18.14)
Sets the filter time constant for speed measurement.
The parameter can be used to eliminate encoder signal noise. Too high a filter time
reduces speed control stability. See chapter 9.1.
619 CL: Slip adjust
(2.5.18.6)
The motor name plate speed is used to calculate the nominal slip. This value is used to
adjust the voltage of motor when loaded. The name plate speed is sometimes a little
inaccurate and this parameter can therefore be used to trim the slip. Reducing the slip
adjust value increases the motor voltage when the motor is loaded. See chapter 9.1.
620 Load drooping
(2.5.15)
The drooping function enables speed drop as a function of load. This parameter sets that
amount corresponding to the nominal torque of the motor.
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