Product Description:

The KMS02.1B-A018-P-D7-ET-NNN-L3-NN-FW is a near-motor servo drive produced by Bosch Rexroth Indramat and supplied within the KMS Electronic Drives series. Positioned directly on the machine frame, this drive supplies regulated power to synchronous motors while minimizing cabinet wiring, making it common in modular automation cells. Mounting the unit close to the actuator shortens motor-side cable runs and reduces the amount of power wiring that must return to the main cabinet. It is a design version 1 unit with a basic performance level for standard positioning and velocity tasks in decentralized machine sections.

The drive draws a rated input current of 7.3 A and operates from a DC bus level of 750 V DC supplied by the central power source. Its DC link stores 0.02 mF of intermediate energy, which supports inverter switching and helps stabilize the internal power stage during load changes. The power stage switches at 4 kHz PWM and can supply 5.8 A continuously while reaching 17.7 A during short acceleration periods. An 18 A absolute limit and a 25 A bypass channel help protect the output stage from overcurrent. Natural convection removes 50.00 W of internal heat, so no forced-air hardware is required. Multi-Ethernet master communication links the unit to higher-level controllers, Safe Torque Off removes torque-producing power during an emergency stop, and the unit does not include an encoder interface.

Fast semiconductor switching is shown by an output rise rate of 5.00 kV/µs, helping keep short motor cable runs within acceptable dv/dt stress levels. The sealed aluminum housing meets IP65 and has a width of 86 mm, so it can be mounted on exposed machine surfaces where dust, water jets, and limited space are common concerns. A short-circuit withstand capability of 42,000 A rms matches industrial feeder conditions and supports installation in heavy-duty power systems.