SYHNC-SEK-23/M-24-0-C-E24-A047

The SYHNC-SEK-23/M-24-0-C-E24-A047 is a rack-mounted digital axis controller produced by Bosch Rexroth Indramat for the VT-HNC Digital Axis Controllers series. It provides closed-loop processing for hydraulic axes, translating motion commands into electrical signals that coordinate position control in industrial automation systems. The board slides directly into a rack-mounting frame, allowing installation without disturbing the backplane wiring.

The controller has four differential analog inputs that accept either voltage or current feedback, and the differential wiring helps cancel electrical noise commonly generated around pumps and manifolds. Command references leave the board through two voltage/current outputs and two voltage outputs, so two channels can drive current-controlled devices while the other two provide voltage setpoints for servo amplifiers. Discrete logic arrives through 24 digital inputs, and machine states are returned through 24 digital outputs, allowing a PLC to monitor limits, valves, and sensors connected to the axis. A CANopen network port links the controller to higher-level devices for parameter transfer and status exchange without extensive parallel wiring. The electronics operate from 18 to 36 VDC, supporting battery-buffered or redundant 24 V power rails commonly used in control cabinets.

The controller coordinates two hydraulic axes, keeping both position loops aligned with the same internal processing cycle during synchronized motion. When millivolt bridge sensors are used, four impedance converter inputs condition their signals internally and eliminate the need for external signal amplifiers. Linear feedback elements connect through the IW9 evaluation stage, which supports transducers with a 9 mm stroke and is suitable for short-stroke cylinders used in clamping or indexing applications. Nonoperational storage is permitted from -20 to +70 °C, allowing spare modules to remain in unconditioned warehouses or transport environments within this temperature range.