Product Description:

The CDB01.1C-SE-EN2-EN2-NNN-NNN-NN-S-NN-FW is a dual-axis control unit from the CDB Control Units series produced by Bosch Rexroth Indramat. It mounts inside IndraDrive drive stacks and serves as the command layer that links motion controllers with power sections in automated machinery. By hosting encoder evaluation, fieldbus communication, and basic I/O, the module supervises position, velocity, and diagnostic data for two servo axes in packaging, printing, and material-handling equipment.

This model draws a base power of 9 W, so cabinet heat dissipation remains low even when both axes are enabled. One analog input and two analog outputs are available for speed or torque references that must bypass the digital network. All digital sensors and actuators are supplied from an internal bus rated at 24 V DC, and that rail can deliver up to 1.1 A for opto-isolated switches or photo-eyes. Both axes share the same feedback interface, accepting incremental or absolute signals in the EnDat 2.1 / 1 Vpp / 5 V TTL format; this keeps signal handling consistent across both channels. Real-time setpoints are exchanged over the fiber-optic SERCOS II ring, which offers deterministic cycle times required for tightly coupled multi-axis motion. A single normally open relay contact can be wired to a master safety relay for drive-ready signaling, while an RS232 port supports local service access.

The inrush profile peaks at 6 A for a few milliseconds when the DC bus is first energized, so line fusing must tolerate that short surge. For secondary encoder supply, the dedicated EN2 pins source a regulated 5 V with a minimum load resistance of 35 Ohm and can provide up to 350 mA to incremental feedback heads. Command pulses to external stepper followers are limited to a maximum width of 60 ms, preventing watchdog timeouts in downstream devices and keeping axis coordination consistent.