CSH01.1C-PB-ENS-EN2-NNN-L1-S-NN-FW

The CSH01.1C-PB-ENS-EN2-NNN-L1-S-NN-FW is a control section produced by Bosch Rexroth Indramat for the CSH Advanced Controllers series. Installed in an IndraDrive modular rack, the unit processes fieldbus telegrams from a PROFIBUS-DP network, evaluates encoder signals, and generates motion commands for the connected power module. By handling these real-time tasks inside the drive, the controller off-loads the main PLC and provides deterministic positioning and velocity control for industrial axes.

The control electronics run from an external 24 VDC supply that can tolerate an inrush of 4 A for startup periods lasting up to 100 ms. During steady operation the logic draws only 7.5 W, minimizing cabinet heat. A secondary analog output channel incorporates an 8 Bit converter; this resolution is suitable for coarse setpoint or diagnostic signals that do not demand fine granularity. Internal sensor power and discrete input circuits share the same 24 V rail, and the combined current available for all digital points is limited to 1.1 A to protect track wiring and board traces.

Total sourcing capability on the fast transistor outputs is capped at 1000 mA, and the driver stage is rated to absorb inductive kick energy up to 400 mJ without external snubbers. For SinCos or EnDat feedback devices attached to the ENS channel, the differential receiver input presents 120 Ω, ensuring correct line termination and noise immunity. The secondary EN2 sensor supply delivers a regulated 5.0 V at 350 mA, allowing direct connection of incremental encoders that need logic-level excitation while keeping signal integrity over typical cable lengths. A female D-Sub 9 connector provides PROFIBUS access, and data rates can be selected anywhere from 9.6 kBaud to 12 MBaud so the controller can match legacy and high-speed segments on the same plant network.