Product Description:

The CSB02.1B-ET-EC-EC-NN-NN-NN-AW is a single-axis drive controller produced by Bosch Rexroth Indramat for the CSB Drive Controllers series. It links higher-level PLCs to servo or spindle motors, translating motion commands into precisely modulated current loops. Multi-Ethernet communication handles deterministic traffic to the control system, while two Multi-Encoder interfaces collect incremental, EnDAT, or SSI feedback so that closed-loop positioning remains accurate even during rapid machine cycles. This arrangement lets one controller manage both network exchange and feedback evaluation within a compact single-axis platform.

Powered from a control circuit at DC 24 V, the unit distributes auxiliary power and signal conditioning through a dense I/O set. There are 2 analog outputs for speed references, 11 digital inputs for limit or home switches, and 5 configurable digital I/O that can be reassigned as status flags or fast command triggers. An internal regulator can source up to 500 mA at 12 V to encoders, so external supplies are not required for most feedback devices. Two probe inputs capture edge-aligned positions, and three optional slots accept add-on cards when additional communication or technology functions are needed. The front plate also carries an eight-pin RJ-45 connector that mates with standard patch leads. The design omits integrated safety technology, so STO or SS1 must be provided at the machine level.

Network exchange uses 100Base-TX signaling for consistent 100 Mbit/s throughput, while a second encoder supply provides up to 500 mA at 5 V for digital transducers that require lower voltage. Motion events down to a 1 ms pulse width are recognized, supporting precise capture of trigger marks from external sensors. The controller’s analog conditioning rejects frequencies beyond a 400 kHz sine-wave cutoff, helping keep switching noise and carrier artifacts out of the control path at high motor speeds.