Product Description:

The CSB02.1B-ET-EC-EC-S4-DA-NN-FW is a drive controller manufactured by Bosch Rexroth Indramat within the CSB Drive Controllers series. It is designed to regulate and monitor servo axes through Multi-Ethernet networks, allowing a machine control system to issue deterministic motion commands while the integrated Safe Motion functions supervise speed and position to help protect personnel. By combining power-stage control with fast fieldbus communication, the unit serves as the interface between higher-level PLCs and the motors that execute each cycle in an automated line.

The controller provides two independently buffered analog outputs. Each channel can drive capacitive loads up to 100 nF, and this capacitance limit helps avoid ringing on long cable runs. Digital-to-analog conversion completes in 250 µs, so updated velocity or torque setpoints reach the drive with minimal latency. With a permissible load of 2 kΩ, the outputs can be wired directly to typical servo amplifiers or process indicators, and their incremental resolution of 24 mV/Incr supports fine scaling of command values. Voltage inputs use a 300 kΩ impedance, while the analog current path uses protective shunts; both channels are digitized for closed-loop tasks that rely on feedback from external sensors.

On the feedback side, a current input resistance of 300 Ω pairs with a converter resolution of 12-bit, giving adequate granularity for torque estimation without excessive quantization noise. Encoder sampling for EC-Sine signals is bandwidth-limited to 400 kHz, and EC square-wave tracks are accepted up to 1000 kHz, supporting high-speed motors without loss of edge detection. Network traffic passes through an industrial Ethernet port rated at 100Base-TX, and the RJ-45 eight-pin connector follows IEEE 802.3u so standard Cat-5e wiring can be used. Additional 14-bit resolution is available on the voltage input channel, and the EC-Sine A/D width mirrors this accuracy to maintain consistent position control across all feedback modes.