Product Description:

The CSB02.1B-ET-EC-EP-L3-EC-NN-FW is a drive controller from Bosch Rexroth Indramat’s CSB Drive Controllers series. It coordinates servo axes and field devices in automated cells by combining motion control, encoder evaluation, and fieldbus routing in one panel-mount unit. Through this integration, the product supplies command sequences and real-time feedback that keep industrial machinery synchronized and operating within programmed limits.

On the signal side, the unit offers 3 analog inputs, 2 analog outputs, and 11 digital inputs, so process variables, reference values, and binary states can all be monitored without external I/O cards. Three internal option slots allow additional technology functions such as extra fieldbus masters. Network traffic travels through the Multi-Ethernet communication module, which adheres to IEEE 802.3 for deterministic data exchange with PLCs and HMI panels. The primary encoder port follows a Multi-Encoder interface, and it can source up to 500 mA while staying inside the 6 W power budget reserved for position feedback devices. For discrete sensor channels, the L3 terminal recognizes a logic high at 11 V and tolerates excursions up to the rated maximum. Analog conditioning is protected by a 400 kHz sine-wave cutoff, whereas rapid incremental encoders can still be captured through a 1000 kHz square-wave input.

Functional safety is handled by the integrated Safe Torque Off circuit, which removes drive energy without affecting upstream control wiring. Rotor angle can be recovered by a resolver operating at 8 kHz, giving noise-immune position data even during high accelerations. The discrete input terminals withstand up to 30 V, so wiring errors do not immediately damage input stages. This arrangement keeps safety handling, encoder processing, and network exchange in one controller for compact panel layouts and coordinated axis control.