Product Description:

The CSH01.1C-SE-ENS-MEM-MA1-L2-S-NN-FW is a single-axis drive controller board from Bosch Rexroth Indramat's CSH Advanced Controllers series. Designed for mounting inside an IndraDrive power section, CSH01.1C-SE-ENS-MEM-MA1-L2-S-NN-FW handles motion commands, feedback processing, and safety tasks for one servo axis in automated machinery. By combining communication, encoder evaluation, and onboard analog I/O, the board acts as the central coordination layer between higher-level PLCs and the power stage that energizes the motor.

At the hardware level, the board draws only 7.5 W from the internal 24 V supply, minimizing cabinet heat. Command and status data move over SERCOS II, a real-time fiber-optic bus that provides deterministic cycle times needed for coordinated multi-axis workcells. The controller supports one axis, and its single-line operator display provides access to diagnostics without requiring a separate computer. The MA1 analog option adds two input and two output channels, and each converter has 12-bit resolution for precise torque or velocity references. Encoder power is provided by the ENS socket at 11.6 V with up to 500 mA, so absolute or incremental sensors can be powered directly through the board.

Position feedback arriving through the MEM interface can be transmitted over cables up to 40 m while maintaining a bandwidth of 1 MHz, enabling high-resolution encoders to operate at full speed on moving axes such as gantries. The interface supports absolute and incremental emulation and is galvanically isolated to prevent ground loops between machine sections. For setup or service, an asynchronous channel permits parameter downloads at 115 kBaud through the front-panel RS-232 port. The integrated safety circuit accepts a safe torque off command through a D-Sub, 9-pin connector, and its 3 mA sensing current allows connection to standard dry-contact safety relays without an additional power supply.