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Drive
parameters
Communications Diagnostics Technical data
UL Listing
Information
Commander S100 User Guide 77
P3.06 Motor Starting Boost
Range: 0.0 to 25.0 % Default: 3.0 %
Defines the level of voltage boost at 0 Hz as a percentage of the Motor Rated Voltage (P3.03) when Motor Control Mode (P3.05) is set to Linear V
to F (1) or Square V to F (2). It can be used to increase low frequency torque performance, but if set too high will cause excessive motor current
which could result in a Motor Overload error.
P3.07 Motor Starting Boost End Voltage
Range: 0.0 to 100.0 % Default: 50.0 %
Defines the level of voltage as a percentage of the Motor Rated Voltage (P3.03) at the Motor Starting Boost End Frequency (P3.08) when Motor
Control Mode (P3.05) is set to Linear V to F (1).
P3.08 Motor Starting Boost End Frequency
Range: 0.0 to 100.0 % Default: 50.0 %
Defines the frequency as a percentage of the Motor Rated Frequency (P3.15) at which Motor Starting Boost (P3.06) has been faded out
when Motor Control Mode (P3.05) is set to Linear V to F (1).
P3.09 Perform Auto-tune
Range: 0 to 1 Default: 0
A stationary test to measure Stator Resistance (P3.18).
To perform an auto-tune:
Set this parameter to 1 and run the drive.
When the auto-tune sequence is completed successfully the drive is stopped and this parameter is set to 0.
The drive can be restarted by removing any run signals and activating them again.
An auto-tune test cannot be initiated if the drive is in error or the drive inverter is active, i.e. Drive Healthy = 0 or Drive Running = 1 in Drive Status
Indicators (P1.10).
The auto-tune test relies on the motor being stationary throughout the test to give accurate results.
P3.10 Energy Optimizer
Range: 0 to 1 Default: 0 (Off)
Energy efficient motor control (sometimes referred to as Dynamic V to F) is intended for applications where power loss should be kept to a
minimum under low load conditions, but dynamic (rapid acceleration) performance is not important.
P3.11 Catch an Already Spinning Motor
Range: 0 to 3 Default: 0 (Disabled)
Defines the behaviour of the drive when the drive is enabled whilst the motor is rotating.
If it is possible that the motor is spinning when the run signal is given, then this parameter should be set for the required action. If this parameter is
> 0, a test is carried out to measure the frequency that the motor is freewheeling at when the drive enters the run state. The measured frequency
is used to give a smooth start at the motor speed detected. For the test to be successful it is important that the motor parameters, especially Stator
Resistance (P3.18) and Motor Rated Speed (P3.02), are configured correctly.
P3.12 PWM Switching Frequency
Range: 0 to 1 Default: 0 (4 kHz)
This parameter determines the maximum switching frequency. If PWM Switching Frequency is set to 1 (12 kHz) under normal operating conditions
the drive will use a switching frequency of 12 kHz but, the drive will reduce the switching frequency to 4 kHz if the drive becomes too hot.
At higher switching frequencies, the acoustic noise from the motor will be reduced, but results in increased losses in the drive and the continuous
output current is derated. See the information in section 10.1 Drive derating.
P3.13 DC Braking Current Level
Range: 0.0 to 150.0 % Default: 100.0 %
Defines the level of current used for injection braking as a percentage of Motor Rated Current (P3.01). See Stopping Mode Selector (P2.04).
Excessive current can cause motor overheating.
P3.14 DC Braking Time
Range: 0.0 to 100.0 s Default: 1.0 s
Defines the time during which D.C. current is injected into the motor during timed injection stopping modes. See Stopping Mode Selector (P2.04).
Excessive braking time when the motor speed is low can cause motor overheating due to reduced motor self-ventilation.
Value Text Description
0
Disabled No attempt to detect the motor speed
1
Enabled Detects the motor speed before starting
2
Forward Only Detects forward motor speed only, starts at 0 Hz if motor rotating backwards
3
Reverse Only Detects reverse motor speed only, starts at 0 Hz if motor rotating Forward
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