ABB ACS880-37LC-0390A-7, Hardware Manual, Page: 39 / 242

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du/dt filter
The d u /d t filter protects the motor insulating system by reducing the voltage rise speed at
the motor terminals. The filter also protects the motor bearings by reducing the bearing
currents.
More information on when the option is required: See section Examining the compatibility
of the motor and drive (page 74) .
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Common mode filter (E208)
The common mode filter contains ferrite rings mounted around the AC output busbars in
the drive module. The filter protects the motor bearings by reducing the bearing currents.
More information on when the option is required: See section Examining the compatibility
of the motor and drive (page 74) .
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Cabinet heater with external supply (G300)
The option contains:
• heating elements in the cubicles or supply/inverter modules
• load switch for providing electrical isolation during service
• miniature circuit breaker for overcurrent protection
• terminal block for external power supply.
The heater prevents condensation inside the cabinet when the drive is not in operation. The
power output of the heating elements increases when the surrounding air temperature is
low and decreases when the surrounding air temperature is high. The customer must stop
the heating when it is not needed by disconnecting the heater supply voltage.
The customer must supply the heater from an external 110…240 V AC power source.
For the actual wiring, see the circuit diagrams delivered with drive.
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Cabinet lighting (G301)
This option contains LED lighting fixtures in each cubicle (except joining and brake resistor
cubicles) and a 24 V DC power supply. The lighting is powered from the same external
110…240 V AC power source as the cabinet heater (G300).
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Terminals for external control voltage (G307)
The option provides terminals for connecting an external uninterruptible control voltage to
the control unit and control devices when the drive is not powered.
See also:
• Supplying power for the auxiliary circuits (page 89)
• circuit diagrams delivered with drive for the actual wiring.
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Output for motor space heater (G313)
The option contains:
• load switch for providing electrical isolation during service
• miniature circuit breaker for overcurrent protection
• terminal block for heater and external heater supply connection.
Operation principle and hardware description 39