Beijer Electronics BFI-P2 V1.21 - Manual (Page 42)

User Guide Revision 1.12
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42
8.3. Parameter Group 4 – High Performance Motor Control
Incorrect adjustment of parameters in menu group 4 can cause unexpected behaviour of the motor and any connected
machinery. It is recommended that these parameters are only adjusted by experienced users.
Par Parameter Name Minimum Maximum Default Units
P4‐01 Motor Control Mode 0 2 2 ‐
Selects the motor control method. An autotune must be performed if setting 0 or 1 is used.
0: Speed Control with Torque Limit (vector)
1: Torque Control with Speed Limit (vector)
2: Speed Control (Enhanced V/F)
P4‐02 Motor Parameter Auto‐tune Enable 0 1 0 ‐
When set to 1, the drive immediately carries out a non‐rotating autotune to measure the motor parameters for optimum control and
efficiency. Following completion of the autotune, the parameter automatically returns to 0.
P4‐03 Vector Speed Controller Proportional Gain 0.1 400.0 25.0 %
Sets the proportional gain value for the speed controller when operating in Vector Speed or Vector Torque motor control modes (P4‐
01 = 0 or 1). Higher values provide better output frequency regulation and response. Too high a value can cause instability or even
over current trips. For applications requiring best possible performance, the value should be adjusted to suit the connected load by
gradually increasing the value and monitoring the actual output speed of the load until the required dynamic behaviour is achieved
with little or no overshoot where the output speed exceeds the setpoint.
In general, higher friction loads can tolerate higher values of proportional gain, and high inertia, low friction loads may require the
gain to be reduced.
P4‐04 Vector Speed Controller Integral Time Constant 0.000 1.000 0.050 s
Sets the integral time for the speed controller. Smaller values provide a faster response in reaction to motor load changes, at the risk
of introducing instability. For best dynamic performance, the value should be adjusted to suit the connected load.
P4‐05 Motor Power Factor Cos Ø 0.50 0.99 ‐ ‐
When operating in Vector Speed or Vector Torque motor control modes, this parameter must be set to the motor nameplate power
factor
P4‐06 Torque Control Reference / Limit Source 0 5 0 ‐
When P4‐01 = 0, this parameter defines the source for the maximum output torque limit.
When P4‐01 = 1, this parameter defines the source for the torque reference (setpoint).
0: Fixed Digital. The torque controller reference / limit is set in P4‐07
1: Analog Input 1. The output torque is controlled based on the signal applied to Analog Input 1, whereby 100% input signal level will
result in the drive output torque being limited by the value set in P4‐07.
2: Analog Input 2. The output torque is controlled based on the signal applied to Analog Input 2, whereby 100% input signal level will
result in the drive output torque being limited by the value set in P4‐07.
3: Fieldbus. The output torque is controlled based on the signal from the communications Fieldbus, whereby 100% input signal level
will result in the drive output torque being limited by the value set in P4‐07.
4: Master / Slave. The output torque is controlled based on the signal from the Master inverter, whereby 100% input signal level will
result in the drive output torque being limited by the value set in P4‐07.
5: PID Controller Output. The output torque is controlled based on the output of the PID controller, whereby 100% input signal level
will result in the drive output torque being limited by the value set in P4‐07.
P4‐07 Maximum Motoring Torque Limit / Current Limit P4‐08 500.0 200.0 %
When operating in Vector Speed or Vector Torque motor control modes (P4‐01 = 0 or 1), this parameter defines the maximum
torque limit or reference used by the drive in conjunction with P4‐06.
When operating in V/F Mode (P4‐01 = 2), this parameter defines the maximum output current the drive will provide to the motor
before reducing the output frequency to attempt to limit the current.
P4‐08 Minimum Motoring Torque Limit 0.0 P4‐07 0.0 %
Active only in Vector Speed or Vector Torque motor control modes (P4‐01 = 0 or 1). Sets a minimum torque limit, whereby the when
the Drive is enabled, it will always attempt to maintain this torque on the motor at all times whilst operating.
NOTE : This parameter should be used with extreme care, as the drive output frequency will increase to achieve the torque level,
and may exceed the selected speed reference
P4‐09 Generator Mode Max. Torque Limit (Maximum Regenerative Torque) 0.0 200.0 200.0 %
Active only in Vector Speed or Vector Torque motor control modes (P4‐01 = 0 or 1). Sets the maximum regenerating torque allowed
by the Drive
P4‐10 V/F Characteristic Adjustment Frequency 0.0 P1‐09 0.0 Hz
When operating in V/F mode (P4‐01 = 2), this parameter in conjunction with P4‐11 sets a frequency point at which the voltage set in
P4‐11 is applied to the motor. Care must be taken to avoid overheating and damaging the motor when using this feature.
P4‐11 V/F Characteristic Adjustment Voltage 0 P1‐07 0 V
Used in conjunction with parameter P4‐10
P4‐12 Thermal Overload Value Retention 0 1 0 ‐
0 : Disabled.
1 : Enabled. All BFI feature electronic thermal overload protection for the connected motor, designed to protect the motor against
damage. An internal overload accumulator monitors the motor output current over time, and will trip the drive if the usage
exceeds the thermal limit. When P4‐12 is disabled, removing the power supply from the drive and re‐applying will reset the value
of the accumulator. When P4‐12 is enabled, the value is retained during power off.