A8.F5.S1A-242A KEB
Wake Industrial LLC is not an authorized distributor of this product.
The KEB A8.F5.S1A-242A is part of the F5 Combivert Axis Drives series and supports both 1-phase and 3-phase input at 230 V. It features closed loop field-oriented motor control with PI speed controller and includes a braking transistor as an installed accessory. The drive offers a switching frequency of 2 kHz and supports both AC and DC supply types.
Internal Product Review
The A8.F5.S1A-242A is a KEB F5 Combivert axis drive that stands out for closed loop field-oriented motor control and a PI speed controller. Resolver + Incremental I/O with RS422 output supports dependable feedback integration, making this drive a strong choice for precise axis control.
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Product Description:
The A8.F5.S1A-242A is an axis drive module produced by KEB for the F5 Combivert Axis Drives series. It executes closed-loop, field-oriented motor control, using a PI speed controller to adjust torque and velocity in real time for automation tasks. The unit operates from either AC or DC supply lines, is built in housing form factor code A, and has a standard varnish finish that protects internal circuitry against ambient moisture and conductive dust during panel installation.
The power section accepts a 230 V line potential and can be wired for single-phase or three-phase feeds, so the same chassis suits single-phase utility sources as well as three-phase plant mains. Energy from the rectifier is buffered in a DC voltage link, allowing regenerated power to be shared with adjacent inverters or returned to the source. The IGBT bridge switches at 2 kHz, a frequency that balances motor acoustics with semiconductor losses. For dynamic events such as rapid indexing, the drive can supply up to 150% of its rated current for short periods without derating, providing extra acceleration torque before the thermal model reduces the output.
Feedback flexibility is enhanced by the resolver and incremental interface; channel 2 accepts pulse streams up to 300 kHz and is terminated internally with 150 ohms to preserve signal integrity on long, shielded cables. For downstream distribution, the drive repeats incremental data in the RS-422 differential format so that external position controllers receive clean, noise-resistant edges. A built-in braking transistor diverts surplus energy into an external resistor during fast deceleration, preventing a rise in DC-bus voltage that could trigger the protection circuitry. Hardware protection trips at 180% of nominal current, coordinating with the short-term limit described earlier to protect semiconductor junctions during fault conditions.
