09.56.210 KEB
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The KEB 09.56.210 is part of the F5 Combivert Axis Drives series and supports a DC input voltage range of 420 to 720 V and an AC input voltage range of 305 to 500 V. This drive features a rated output current of 4.1 A and an installed braking transistor, with maximum braking current of 7.5 A and maximum rated motor power of 1.5 kW. It has a rated switching frequency of 8 kHz and power dissipation of 80 W.
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Product Description:
The 09.56.210 axis drive is produced by KEB as part of the F5 Combivert Axis Drives series. It functions as a cabinet-mounted inverter that supplies regulated three-phase power to servo or induction motors in automated production lines. The unit ties into a common DC bus so that regenerated braking energy can be redirected to other axes or dissipated through its integrated transistor, allowing coordinated speed and torque control within packaging, printing, and material-handling equipment.
The drive accepts a three-phase mains supply of 305...500 V AC and automatically rectifies it to a DC link window of 420...720 V DC. Operation is synchronized to plant grids running at 50/60 ±2 Hz, while a nominal 400 V line is supported at a rated input current of 6 A. Internally, the IGBTs switch at 8 kHz under continuous duty and can be set up to 16 kHz when acoustic noise must be minimized. A maximum motor rating of 1.5 kW is permitted, provided that full-load frequency does not drop below 6 Hz. Dynamic stopping energy is routed through the built-in braking transistor; with a minimum external resistor of 120 Ω, the module withstands 7.5 A of braking current without exceeding the 80 W heat-sink loss. Should the DC bus climb toward unsafe levels, the protection circuit trips at 8.9 A to prevent semiconductor damage.
The output stage is rated for 4.1 A continuous current and delivers an apparent power of 2.8 kVA to the connected motor. During rapid deceleration, the drive's thermal model tracks junction temperature so that aggregate dissipation stays within 80 W and the aluminum heat sink remains below 90 °C. When those limits are approached, the drive reduces carrier frequency or derates torque to keep temperature and braking demand within allowable limits.
