Product Description:

The CSB02.5B-ET-EC-EM-L3-DA-NN-NW is a drive controller manufactured by Bosch Rexroth Indramat and belongs to the CSB Drive Controllers series. As the logic and communication unit of a servo drive, it processes command data, evaluates return signals from the motor feedback channel, and coordinates control actions for the axis. It also issues switching and modulation signals that govern the connected power section and motor, allowing the overall drive system to respond accurately to motion commands in industrial automation systems.

Analog interfaces on the controller resolve current commands with 12 bit precision and voltage references with 14 bit depth, enabling finely graded setpoint generation for torque and speed loops during closed-loop motion control. The single analog output steps in increments of 24 mV/incr, which supports scoped diagnostics or external actuator control where small output changes are useful. Communication to higher-level PLCs is handled through the Multi-Ethernet platform, so the unit can switch between PROFINET, EtherNet/IP, or SERCOS over the same hardware without changing the controller itself. Encoder data arrives through a multi-encoder interface that accepts incremental or SSI signals, and the encoder emulation can output those formats for downstream drives that need synchronized position information. For power stage pairing, it is matched to the HMU05 section, and its digital or analog I/O extension accommodates fast process triggers with a maximum pulse width of 1 ms.

The supply line delivers DC 24 V, and inrush demand stays below 5 A, limiting load on cabinet power supplies during startup. Steady operation draws only 17 W, which helps reduce heat buildup inside the panel and supports compact cabinet layouts. Network wiring is routed through an RJ-45 8-pin connector that supports the 100Base-TX standard for deterministic motion bus traffic and straightforward integration with common industrial Ethernet cabling. The integrated safety circuit provides Safe Torque Off, allowing motor energy to be removed without external contactors while encoder emulation helps keep downstream axes synchronized when digital and analog field signals are in use.