Product Description:

The CDB01.1C-PB-ENS-ENS-ENS-ENS-NN-S-NN-FW is a configurable control unit produced by Bosch Rexroth Indramat within the CDB Control Units series. It is installed in drive systems to coordinate signal conversion, fieldbus exchange, and peripheral I/O so that servo drives can follow motion commands issued by higher-level PLCs. The module integrates PROFIBUS communication and multiple encoder channels, allowing it to bridge motion feedback and command voltages between the drive and the automation controller. This arrangement also supports centralized handling of feedback and control signals within the same drive platform.

The analog section supplies up to 1 mA per channel with a resolution of 19.5 mV/inc across a 5 V span, supporting fine current or voltage references for torque and speed loops. A separate digital channel can source 500 mA for fast switching of external optoisolators, while inductive loads are limited to 400 mJ to protect the output stages. Power-up stress on cabinet supplies is capped by an inrush current of 6 A that lasts no longer than 60 ms. The ENS safety module draws 6 W, and the dedicated PROFIBUS interface needs only 2 W, so heat generation remains modest. For serial diagnostics, the RS-232 port operates over a 15 m cable and provides transfer rates up to 115 kBaud.

The encoder inputs accept differential signals up to 500 kHz, and an auxiliary supply of 11.6 V is available to power most incremental or absolute feedback devices. Discrete control logic can be driven through a relay rated at 1 A DC with a contact potential of 30 V DC. The RS-232 line also provides a point-to-point service path that complements the bus interface during local diagnostics. For fast edge detection from external sensors, TTL inputs track state changes to a ceiling of 400 kHz, helping the unit process rapid homing marks or position latching events without loss of fidelity.