Product Description:

The VT 1600-3X-E0-VT4749-U46 is a plug-in servo amplifier card produced by Bosch Rexroth Indramat for the VT 1600 Servo Amplifiers series. Designed for installation in standardized 19-inch racks, the card processes command and feedback signals to modulate hydraulic servo or proportional valves used in industrial automation. By converting low-power control inputs into precise coil currents, the board enables closed-loop position, pressure, or flow regulation in presses, molding machines, and similar motion platforms. Its compact footprint and low current requirement make it suitable for multi-axis installations where cabinet space and power budget are limited.

Mechanical and electrical dimensions follow the Euro Card convention. The printed circuit measures 100 x 160 mm and complies with the mounting rules of DIN 41 494, allowing direct insertion into guide rails without additional hardware. A front plate width of 8 HP reserves sufficient panel area for test points and status LEDs while keeping rack density high. Control electronics run from a regulated ±15 VDC supply delivered through the backplane on pins 14ac, 16ac, and 20ac, eliminating on-board power conversion. A relay coil resistance of 2000 Ω limits inrush current.

The front plate height is 128 mm, matching the standard sub-rack opening and protecting the edge connector that carries control and supply lines to the card’s 32 rear plug pins. During operation the analog circuitry draws less than 200 mA, keeping thermal load low and permitting passive convection cooling inside the cabinet. Command relays switch within a response window of 1 ms, supporting fast valve actuation in closed-loop drives. Because the card is delivered without an internal ±15 V regulator, the external power supply must maintain tight tolerances to ensure amplifier stability.