Goodrive300-19 series open loop vector inverter special for hosit Peripherial options and parts
-251-
provided.
The braking resistor may increase the braking torque of the inverter. The resistor power in the
above table is designed on 100% braking torque, 10%, 50% and 80% braking usage ratio.
Users can select braking system according to the actual operation.
When using the external braking units, please see the instructions of the energy braking units
to set the voltage degree of the braking unit. Incorrect voltage degree may affect the normal
running of the inverter.
Never use a brake resistor with a resistance below the minimum value specified
for the particular inverter. The internal inverter are not able to handle the
overcurrent caused by the low resistance.
Increase the power of the braking resistor properly in the frequent braking
situation (the frequency usage ratio is more than 10%).
C.8.2 Select the braking resistor cables
Use a shielded cable to the resistor cable.
C.8.3 Install the braking resistors
Install all resistors in a place with good ventilation.
The materials near the braking resistors must be non-flammable. The surface
temperature of the resistor is high. Air flowing from the resistor is of hundreds of
degrees Celsius. Protect the resistor against contact.
Installation of the braking resistor:
The inverters of 380V (≤55kW) only need external braking resistors.
PB and (+) are the wiring terminals of the braking resistors.
+
PB
External
braking
resistor
Installation of the braking unit:
The inverters of 380V (≥75kW) need external braking units.
(+), (-) are the wiring terminals of the braking units.
The wiring length between the (+), (-) terminals of the inverter and the (+), (-)
terminals of the braking units should be no more than 5m, and the distributing
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