Product Description:

The CDB01.1C-PB-EN1-EN1-EN2-EN2-L1-S-NN-FW control section is produced by Bosch Rexroth Indramat within the CDB Control Units series. It mounts inside an IndraDrive power module and acts as the logic layer for paired servo channels. In an automation cell, the board handles digital processing that supervises torque, speed, and position loops, passes command data to the drive power stage, and returns feedback to higher-level controls. By combining fieldbus communication, encoder evaluation, and local safety functions, it streamlines axis coordination on conveyors, pick-and-place gantries, and packaging equipment.

Communication with external controllers is handled through PROFIBUS-DP, allowing deterministic telegram cycles for drive parameterization and real-time setpoints. A dedicated transceiver on the card refreshes motor current commands every 125 µs, so torque response follows load changes with minimal latency. The velocity loop is computed in 250 µs, and the position loop closes in 500 µs to keep following error low across both motion channels. Bus wiring enters through a 9-pin female D-Sub connector located on the front edge of the board. For position feedback, the control unit has two EN1 slots for HSF or resolver signals with an 8 V DC / 18.2 Vpp source, and two EN2 slots for EnDat 2.1, 1 Vpp, or 5 V TTL encoders from a 5 V supply.

The card supports 2 axes, and each axis includes one analog input and two analog outputs. The analog input uses an input resistance of 160 kOhm, so connected transducers see only a light electrical load. Output stages provide two 5 V reference levels at up to 1 mA for actuator setpoints or test signals. Functional safety is implemented with Starting Lockout, which inhibits drive enable until diagnostics are cleared, and emergency deceleration follows Stop Category 0. Additional drive-side resources include a 1 µs internal timing grid and encoder redundancy for tightly coordinated motion in compact machinery.