ABB EC Titanium Series, Руководство пользователя

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Parameter Definitions 10-13 MN448
Parameters in the Long parameter mode
No.
Name/Value Description Default
2610
V/F CHARACTERISTIC
ADJUSTMENT VOLTAGE
Used in conjunction with parameter 2611 V/F CHARACTERISTIC
ADJUSTMENT FREQUENCY.
0 V
0 V…250/500
2611 V/F CHARACTERISTIC
ADJUSTMENT FREQUENCY
This parameter in conjunction with parameter 2610 V/F CHARACTERISTIC
ADJUSTMENT VOLTAGE sets a frequency point at which the voltage set
in parameter 2611 V/F CHARACTERISTIC ADJUSTMENT FREQUENCY
is applied to the motor. Care must be taken to avoid overheating and
damaging the motor when using this feature. Refer to section 12.5
0.0 Hz
0.0 Hz…Value set in 9907
9905
A
B
2610
2611 9907
Frequency
Voltage
The V/f characteristic is defined by several parameters as follows:
Parameter 9905 : Motor Rated Voltage
Parameter 9907 : Motor Rated Frequency
The voltage set in parameter
9905
is applied to the motor at the frequency
set under normal operating conditions, the voltage is linearly reduced at
any point below the motor rated frequency to maintain a constant motor
torque output as shown by the line ‘A’ on the graph.
By using parameters parameter 2610 and 2611 , the voltage to be applied
at a particular frequency can be directly set by the user, thereby altering
the V/F characteristic.
Reducing the voltage at a particular frequency reduces the current in the
motor and hence the torque and power, hence this function can be used
in fan and pump applications where a variable torque output is desired by
setting the parameters as follows:
Parameter 2610 = 9905 / 4
Parameter 2611 = 9907 / 2
This function can also be useful if motor instability is experienced at
certain frequencies, if this is the case increase or decrease the voltage
(Parameter 2610 ) at the speed of instability (Parameter 2611 ).
For applications requiring energy saving, typically HVAC and pumping,
the energy optimizer (Parameter
2601
) parameter can be enabled. This
automatically reduces the applied motor voltage on light load.
Parameters in the Long parameter mode
No.
Name/Value Description Default
30 FAULT FUNCTIONS Programmable protection functions
3005 THERMAL OVERLOAD Enables the drive electronic thermal overload protection. Caution, it is
recommended that an alternative means of protecting the motor from
thermal overload is used (e.g. PTC thermistor) if 3005 is disabled.
Press the Navigate key briefly to switch between Index 1 and 2. Then use
the UP or DOWN arrow to adjust the value within each Index (Index 1 is
displayed first).
0
VALUE RETENTION Index 1
0: DISABLED
1: ENABLED
Drive retains the motor thermal overload value following an input power
cycle.
THERMAL PROTECTION Index 2
0: DISABLED
1: ENABLED
Enables the motor thermal over protection. When the motor thermal
overload accumulator reaches 100%, the drive will fault on a
0009
trip.