Product Description:

The CSH01.1C-PB-NNN-NNN-NNN-L2-S-NN-FW control section is produced by Bosch Rexroth Indramat within the CSH Advanced Controllers series. It is intended to coordinate motion on a single axis in servo drive assemblies used throughout automated machinery. By combining network communication, discrete I/O, and a certified safety layer, the unit acts as the supervisory element between higher-level PLCs and the power section that energizes the motor.

The axis programming is organized for a single-axis topology, so one controller channel handles position, velocity, and diagnostic data for its drive. For fieldbus integration, the board supports PROFIBUS, and its transceiver can exchange telegrams at up to 12 MBaud, allowing real-time coordination with distributed PLC nodes. A secondary service port uses an RS232 interface that reaches 115 kBaud for parameter transfers or oscilloscope traces. Functional safety is implemented through Safe Torque Off, which removes drive-enable signals without cycling main power. One relay contact rated at 24 V DC and 1 A provides an isolated hardware flag for external interlocks, and the module accepts one analog input while supplying a 5 V analog output capable of 1 mA for sensor or reference signals.

Internal consumption remains modest; the controller draws 7.5 W during normal operation and a maximum digital supply current of 1.1 A when all logic sections are active. At power-up, the circuit experiences an inrush of 4 A that lasts 100 ms, so the low-voltage supply path must tolerate a brief startup surge. The difference between steady-state demand and startup demand shows that the higher current occurs only during energization rather than during continuous use. This operating profile keeps normal control power requirements low while accounting for the short transient that appears when the unit is switched on. In cabinets with several control devices, that brief surge occurs before the control section settles to its lower running demand.