Product Description:

The CDB01.1C-PB-EN2-EN2-NNN-MA1-NN-S-NN-FW control unit is produced by Bosch Rexroth Indramat within the CDB Control Units series. It is a plug-in drive controller card that coordinates two motion channels in IndraDrive power sections so that servo axes follow programmed profiles in industrial automation cells. By hosting fieldbus communication, encoder evaluation, and analog I/O on one board, the card provides the local control functions that synchronize velocity, position, and diagnostic data between the machine controller and the drives.

The card controls 2 axes, and each channel exchanges setpoints over the integrated PROFIBUS interface, eliminating separate fieldbus modules. Under idle conditions, its electronics consume only 9 W, which helps limit cabinet heat. During power-up, an inrush of 6 A is permitted, so line fusing must accommodate that brief demand. The optional daughter board adds 2 W, keeping the standby load modest. Two feedback ports accept encoders with EnDat 2.1 / 1 Vpp / 5 V TTL signaling, enabling mixed absolute or incremental transducers on the same unit. Internal logic timing is based on a 60 ms pulse width that governs watchdog and diagnostic intervals.

A secondary supply rail delivers 350 mA at 5 V to the twin EN2 encoder channels, and this current supports stable sensor excitation without overloading the backplane. The MA1 analog module provides two differential inputs that accept signals within a ±10 V window and convert them with 12-bit precision, allowing responsive torque or speed commands from external controllers. Two analog outputs can drive loads down to 1 kΩ and provide proportional signals for connected devices. The analog channels operate alongside the encoder interfaces, so the unit can process reference and monitoring signals at the same time.