INSTALLATION
SINUS K
INSTRUCTIONS
104/
191
13.
ACCESSORIES
13.1.
Braking Resistors
13.1.1.
A
PPLICATION
T
ABLES
From size S05 to size S30, SINUS K inverters are supplied with a built-in braking unit. The braking resistor is to
be incorporated in the inverter and connected to terminal B and te (see the WIRING section). For IFD
SW only, the braking unit is enabled through programming parameter C57, Special Functions submenu. An
external braking unit is used for greater sizes (BU200,BU720,BU1440). When choosing the braking resistor,
consider its Ohm value and rated power. The Ohm value determines the instant power dissipated in the braking
resistor and is relating to the motor power; the rated power determines the mean power to be dissipated in the
braking resistor and is relating to the duty cycle of the equipment, i.e. to the resistor activation time with respect
to the duty cycle full time (the duty cycle of the resistor is equal to the motor braking time divided by the
equipment duty cycle).
It is not possible to connect resistors with an Ohm value lower than the min. value acknowledged by the
inverter.
The following pages contain application tables stating the resistors to be used depending on the inverter size,
the application requirements and the supply voltage. The braking resistor power is stated as an approximate
value. A correct dimensioning of the braking resistor is based on the equipment duty cycle and the power
regenerated during the braking stage.
For more details on the connection and features of the external braking unit, please refer to the Braking Unit
BU200 section.
Содержание SINUS K
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