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CHAPTER 3 - INSTALLATION AND CONNECTION
Rheostatic Braking
For the drives with therheostatic braking optional, the braking resistor
shall be installed externally. Refer to figure 8.4 for correct braking
resistor installation. Size the braking resistor according to the
application and respecting the maximum admissible current for the
braking circuit.
Use twisted pair to connect the braking resistor to the drive. Run this
cable separately from the signal and control cables. If the braking
resistor is installed inside the drive panel, the additional resistor heat
dissipation shall be considered when defining the panel ventilation.
DANGER!
The drive must be grounded for safety purposes (PE).
The ground connection must comply with the local regulations. For
grounding purposes, use cables with cross sections as indicated in
table 3.3. Make the ground connection to a grounding bar or to the
general grounding point (resistance 10 ohms).
DANGER!
The grounding wiring shall be installed away from equipment operating
with high currents (for instance: high voltage motors, welding machines,
etc).
If several drives are used together, refer to figure 3.7.
3.2.4.3 Grounding
Connections
3.2.4.2 Output
Connection
The drive has electronic protection against motor overload. This
protection shall be set according to the specific motor. When the same
drive is connected to several motors, individual overload relays shall
be used for each motor protection.
ATTENTION!
If a disconnecting switch or a contactor is inserted between the drive
output and the motor input, do not operate them when motor is running
or when drive is enabled. Maintain the electrical continuity of the motor
cable shield.
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