Product Description:

The CDB01.1C-SE-EN1-EN1-EN2-EN2-S1-S-NN-FW control unit is produced by Bosch Rexroth Indramat and belongs to the CDB Control Units series. It fits into the electronics bay of an IndraDrive servo inverter, where it manages axis operation through feedback processing, safety channels, and fieldbus communication. By converting encoder signals and system commands into motion data for the power section, the board supports coordinated positioning in packaging, printing, and assembly equipment. Its role is to handle the control-side functions that let the inverter respond accurately to commanded movement.

During operation, the module draws a typical base load of 9 W, which helps simplify cabinet cooling. All cyclic data are exchanged over SERCOS II, and the primary encoder interface accepts resolver and high-speed feedback on two channels. To power those sensors, it provides 8 V at 250 mA, while resolver excitation operates at 4 kHz with an amplitude of 18.2 Vpp. Secondary encoders can be EnDat 2.1, 1 Vpp, or 5 V TTL, so both legacy and absolute devices are supported. When feedback sense conductors are omitted, encoder extension cables may reach 50 m. A typical inrush current of 6 A occurs at power-up, so upstream fuses must tolerate that brief demand. Safety inputs accept 24 V at 3 mA through a dedicated D-Sub 9 female connector, and the installed option set is Safety Technology I/O.

Where feedback sense leads are included, the permissible cable distance increases to 75 m, which supports more distant motor installations without excessive signal loss. The safety outputs can switch 24 V / 0.5 A to external relays or contactors, allowing the control unit to interface with external safety devices. For secure retention of the optical ring, the SERCOS plug should be tightened to no more than 0.6 Nm of coupling torque. These values cover cable reach, output switching capacity, and connector tightening limits for integrating the CDB01.1C card into a motion system.