Vacon NX series Applications Manual page 313

PARAMETER DESCRIPTIONS VACON · 313
612 CL: MAGNETIZING CURRENT 6 (2.6.23.1)
The magnetising current (no-load current) of the motor. The magnetising current identifies
the values of the U/f parameters if they are given before the identification run. If the value is
set to 0, the magnetising current is calculated internally.
In NXP, the values of the U/f parameters are identified according to the magnetizing current
if given before identification. See Chapter 8.8 Closed loop parameters (IDs 612 to 621).
613 CL: SPEED CONTROL P GAIN 6 (2.6.23.2)
Gain for the speed controller in closed loop motor control mode given in % per Hz. Gain value
100% means that nominal torque reference is produced at the speed controller output for a
frequency error of 1Hz. See Chapter 8.8 Closed loop parameters (IDs 612 to 621).
614 CL: SPEED CONTROL I TIME 6 (2.6.23.3)
Sets the integral time constant for the speed controller. See Chapter 8.8 Closed loop
parameters (IDs 612 to 621).
SpeedControl Output(k) = SPC OUT(k-1) + SPC Kp*[Speed Error(k) – Speed Error (k-1)] +
Ki*Speed error(k)
where Ki = SPC Kp*Ts/SPC Ti.
615 CL: ZERO SPEED TIME AT START 6 (2.6.23.9)
After giving the start command the drive will remain at zero speed for the time de fined by
this parameter. The speed will be released to follow the set frequency/ speed reference after
this time has elapsed from the instant where the command is given. See Chapter 8.8 Closed
loop parameters (IDs 612 to 621).
616 CL: ZERO SPEED TIME AT STOP 6 (2.6.23.10)
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. The zero speed time starts when
the ramp time is expected to reach zero speed. See Chapter 8.8 Closed loop parameters (IDs
612 to 621).
617 CL: CURRENT CONTROL P GAIN 6 (2.6.23.17)
Sets the gain for the current controller. This controller is active only in closed loop control
mode. The controller generates the voltage vector reference to the modulator. See Chapter
8.8 Closed loop parameters (IDs 612 to 621).
618 CL: ENCODER FILTER TIME 6 (2.6.23.15)
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 8.8 Closed loop parameters (IDs 612 to 621).
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