Product Description:

The VT1600-3X-E1 servo amplifier card is manufactured by Bosch Rexroth Indramat and belongs to the VT 1600 Servo Amplifiers series. Designed for rack installation, the module receives balanced DC power and produces regulated output current for the coils of proportional hydraulic valves. It converts voltage references from a PLC into controlled magnetic force, creating a direct link between electronic commands and hydraulic motion. In hydraulic automation systems, that behavior helps valve-controlled actuators respond consistently to changing command signals. The card is suited for applications that require repeatable proportional control from a compact rack-mounted module.

The amplifier uses the Eurocard format and measures 100 × 160 mm, and it is built to the DIN 41 494 card standard. A front plate height of 3U and a total width of 8 HP allow it to slide into a standard 19-inch subrack without special hardware. These dimensions fit common modular control racks and keep the card aligned with adjacent electronics. Connection to the backplane is made through a 32-pin edge connector that carries power rails, command signals, and feedback lines. On-board voltage regulators let the card operate from a ±24 VDC supply while providing ±15 V rails for the analog circuitry. The module also supports proportional valve coils with a resistance of 2000 Ω.

Dynamic performance is arranged for hydraulic control duties where smooth valve movement is important. The amplifier injects a dither signal of 3 mApp at 340 Hz into the valve coil to reduce static friction and improve low-speed response. It also uses pulse-width modulation with a pulse width of 1 ms for rapid current regulation. Command inputs are limited to ±10 V, and the internal comparator scales coil current linearly across that input range. A controlled input window like this helps the analog stages respond predictably during continuous machine operation.