Product Description:

The CSH02.1B-ET-EC-EM-S4-DA-NN-FW is a modular axis controller produced by Bosch Rexroth Indramat and assigned to the CSH Advanced Controllers series. It provides the digital interface between higher-level PLCs and power electronics, translating position feedback and network telegrams into finely resolved analog drive commands. In industrial automation, this unit handles interpolation, velocity profiling, and cycle-synchronous data exchange so multi-axis systems can run with deterministic timing across coordinated motion tasks.

Its control electronics are powered from a 24 V DC rail, while an auxiliary encoder channel receives a dedicated 12 V supply for resolver and 1 Vpp feedback devices. With a base power draw of 17 W, panel heat remains low, and the momentary inrush stays below <5 A, which helps with fuse selection. The Ethernet interface follows the IEEE 802.3 standard, giving deterministic access to real-time fieldbus layers. Internally, the digital-to-analog stage converts torque words with 12-bit current resolution and a finer 14-bit voltage resolution so the downstream drive can meter energy precisely. An available 500 mA supply current supports external encoders, and the output is filtered within the specified bandwidth to avoid aliasing.

The remaining interfaces cover the servo feedback and analog output stage. Resolver excitation is delivered at 10 Vpp with a carrier of 8 kHz, and synchronous-serial encoder words leave the module at 1 MHz for high-speed position loops. The analog channel can source up to 350 mA, stepping in increments of 24 mV per command and settling within 250 µs. Voltage control remains linear across a bandwidth of 1.3 kHz, which helps prevent high-frequency ripple from reaching the motor windings. For incremental encoders, the permitted 1 Vpp cable run extends to 75 m before signal conditioning is required. This supports feedback routing across larger machine layouts when the controller and motor are installed far apart.