Product Description:

Bosch Rexroth Indramat’s CSH Advanced Controllers series includes the CSH01.1C-S3-ENS-NNN-NN-S-NN-FW control section. This module forms the command layer of IndraDrive servo drives, coordinating motion axes and peripheral sensors within automated machinery. It occupies the left-hand slot of a drive stack and converts fieldbus telegrams and local I/O signals into torque and position references for the power section, shortening cycle times and supporting multi-axis synchronization through deterministic network exchange. This arrangement lets the control section handle communication, signal processing, and axis coordination while the matching power stage supplies motor current to the connected motor.

The analog front end has an input impedance of 160 kΩ, allowing transducers with high source resistance to connect without noticeable signal loading. Each analog channel is digitized at 1.23 mV/inc, which provides fine voltage granularity for closed-loop process variables, while the corresponding output stage steps command voltages in 19.5 mV/inc increments for actuator control. There are 11 discrete inputs, leaving room for limit switches, homing sensors, and user buttons on compact machines. Programmable transistors can source up to 500 mA per output, so indicator lamps or small contact devices can be driven directly. The module also carries four shared digital points that can be assigned as inputs or outputs, which helps simplify panel wiring when space is limited.

The control electronics draw logic power from a 24 VDC auxiliary supply and limit initial surge current to 4 A, which helps prevent nuisance trips in upstream protection devices. Average consumption is only 7.5 W, so heat added to the cabinet remains low even in dense multi-axis drive assemblies. Real-time data exchange runs over SERCOS III, permitting tightly synchronized communication while still forwarding diagnostic data to a higher-level PLC. Two latch-capable probe inputs capture position marks within a maximum pulse width of 100 ms. The encoder port also supplies operating power for supported feedback devices, which reduces the need for separate external power feeds to the encoder circuit.