CDB01.1C-PB-ENS-ENS-NNN-MA1-S1-S-NN-FW Bosch Rexroth Indramat
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MPN: R911309017
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The Bosch Rexroth Indramat CDB01.1C-PB-ENS-ENS-NNN-MA1-S1-S-NN-FW is part of the CDB Control Units series and supports two axes with PROFIBUS-DP control communication. It features two standard encoder evaluation interfaces with D-Sub 15 connectors and a 12 V supply voltage. The unit offers two 12-bit analog outputs and two differential inputs, along with relay contacts rated at 24 V DC and 1 A.
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Product Description:
The CDB01.1C-PB-ENS-ENS-NNN-MA1-S1-S-NN-FW is a dual-axis control unit produced by Bosch Rexroth Indramat within the CDB Control Units series. It is installed in drive cabinets to coordinate servo infeed, motion sequencing, and integrated safety for industrial machinery. By combining fieldbus communication, encoder evaluation, analog I/O, and safety relays, the unit serves as the central command layer between higher-level PLC systems and the power stage of IndraDrive amplifiers.
This model drives up to 2 axes and exchanges cyclic setpoints and diagnostics over the PROFIBUS-DP interface. The motor feedback cables land on a D-Sub 15 female connector, and each standard encoder evaluation channel is energized by 12 V. The controller supplies Ma1 functionality with two analog outputs, two differential inputs, and a resolution of 12 bits, which is useful for speed reference or process monitoring signals. Two additional D-Sub 9 connectors carry fieldbus lines and safety circuits, while the internal logic supervises a pair of standard ENS encoder interfaces, each reporting position through separate counting hardware. Relay contacts rated at 24 V DC are included to switch auxiliary loads. This arrangement allows the unit to exchange process data and evaluate motor feedback without separate interface cards.
The control card processes both encoder channels simultaneously, allowing equal handling of the 2-count interface type and the ENS protocol. A 24 V DC relay path with a capacity of DC 24 V / 1 A supports brake release or actuator enable, and the safe-torque-off channel can deliver 24 V / 0.5 A to downstream contactors. Safety inputs operate at 24 V DC and draw only 3 mA, minimizing load on field wiring, while the matching safety connector uses the same format as the PROFIBUS connection. During power-up, the module draws a typical inrush current of 6 A, so line fusing must account for this short-term surge. The maximum accepted pulse width of 60 ms supports fast position latching during coordinated motion. Separate relay and safety outputs let the control unit manage enable circuits and external contactors directly from the cabinet.
