VT 16000-2X-131 by Bosch Rexroth Indramat

Bosch Rexroth Indramat manufactures the VT 16000-2X-131 as part of the VT 1600 Servo Amplifiers series. The card mounts in motion-control racks and interfaces directly with S5-115U, S5-135U, S5-155U, or S7-400 automation units to drive proportional valves and coordinate hydraulic positioning tasks. Within an industrial cell, it sends real-time commands to as many as four hydraulic axes. Closed-loop feedback allows the connected system to adjust valve commands while executing programmed numerical control profiles.

The amplifier processes commands using a digital control mode and can apply proportional, integral, and derivative actions through its selectable PIDT1 controller. Axis feedback may come from analog, incremental, or SSI measuring systems. Position counting is handled by a counter module with two incremental encoder inputs. Field wiring passes through a digital module that provides eight digital inputs (DI) and an auxiliary combination module with eight analog inputs (AI). These channels allow a PLC to supply setpoints while the amplifier monitors variables such as pressure or velocity. Speed, acceleration, and pressure feedforward paths can pre-bias valve currents before the main control loop reacts, minimizing lag during rapid profile changes.

CNC functionality includes 32 cross-axis cam tables and storage for 2000 NC sets that comply with the DIN 66 025 standard. The stored sets support coordinated motion sequences without requiring external interpolation for each command. As many as four plug-in modules can be installed to adapt the card to complex machines. Compatible options include SSI boards capable of reading four absolute encoders. Differential pressure evaluation supports closed-loop force control during hydraulic operation. The valve uses the residual voltage principle to maintain spool centering and compensate for overlap errors at the null position. Program execution remains local to the amplifier while the automation unit supplies operating commands and receives axis status information.