Product Description:

The CSH01.1C-S3-ENS-EN2-NNN-L1-S-NN-FW is a single-axis control section produced by Bosch Rexroth Indramat for the CSH Advanced Controllers series. Installed inside an IndraDrive modular drive, it executes current, velocity, and position loops while exchanging motion data with higher-level PLCs. As the controller, it coordinates servo or induction motor operation and forms the core of closed-loop axis control in automated assembly machines, packaging lines, and handling systems. It also links command processing, motor feedback, and the power section so the axis can react to changing motion demands in real time.

Its control algorithm closes the current loop every 62.5 µs, the velocity loop every 125 µs, and the position loop every 250 µs, giving the axis fast dynamic response. Communication with the drive master occurs over the SERCOS III optical ring, and the interface can be clocked to a minimum cycle time of 250 µs for synchronized multi-axis operation. The PWM stage supports a maximum switching frequency of 16 kHz, allowing fine torque resolution while limiting motor ripple. Short loop times help the controller correct speed and position errors quickly during acceleration, deceleration, and load changes. For feedback, connector X4 delivers 11.6 VDC to IndraDyn, Hiperface, 1Vpp, or TTL encoders and can source up to 500 mA, while connector X8 provides a 5.0 VDC sense supply and 350 mA for EnDat 2.1, 1Vpp, or TTL sensors.

The control section measures 241 × 49.5 × 103 mm, so it fits standard 50 mm drive slots. During power-up, the module draws an inrush current of 4 A before stabilizing at a typical consumption of 7.5 W, which helps with cabinet power planning and thermal management. The built-in safety function is Starting Lockout, which prevents unintended motor energization until the axis is enabled by the higher-level safety circuit. This arrangement keeps startup control and feedback handling inside the drive housing without requiring a separate external control module.