Product Description:

The CDB01.1C-PB-ENS-ENS-EN2-EN2-L1-S-NN-FW is a modular control section produced by Bosch Rexroth Indramat for the CDB Control Units series. Installed in a Rexroth drive stack, it conditions I/O signals, executes motion commands, and links the drive to higher-level PLCs over PROFIBUS-DP. By combining fieldbus communication with local analog, digital, and encoder resources, the unit coordinates servo axes and auxiliary actuators within an automation cell. It can serve as the signal-processing interface between the power section and surrounding machine controls, keeping command exchange and feedback handling within the same drive assembly.

An isolated analog channel sources up to 5 V at a maximum of 1 mA, allowing reference values such as speed or torque limits to be delivered directly to the power section. Two transistor outputs are rated for 500 mA each, so relays or indicator lamps can be driven without extra interface hardware. The electronics draw only 9 W of base power, minimizing heat inside the cabinet, while the 24 V logic line provides status acknowledgment and opto-isolated control at 1 A and 3 mA respectively. This low base consumption helps reduce thermal buildup around neighboring drive modules and interface cards. A built-in watchdog limits individual output pulses, and the PROFIBUS node address is set with on-board rotary switches for easy setup.

During start-up, the board can tolerate an inrush of 6 A without tripping upstream protection. The En2 incremental encoder interface maintains signal integrity with a load of 35 ohms and can source up to 350 mA at its regulated output rail. Safety feedback that uses the Ens channels is powered from a dedicated 11.6 V supply, which keeps it separate from standard logic power during fault handling. Each Ens output supports pulse-width-limited switching with a ceiling of 60 ms per event. This timing is suited to fast signaling tasks such as brake release control and other time-sensitive drive functions.