Product Description:

The VT 1600-3X-E0 is a plug-in servo amplifier card produced by Bosch Rexroth Indramat for proportional valve control within the VT 1600 Servo Amplifiers series. Installed in a Eurocard rack, the module conditions an analog command signal and drives a solenoid pair so that hydraulic actuators follow reference inputs in closed-loop industrial automation systems. Its compact form factor lets machine builders integrate motion regulation alongside other control electronics without expanding cabinet depth. Because it uses a rack-mounted card format instead of a separate enclosure, it suits control cabinets where organized signal routing and dense module placement are important.

Physical dimensions follow the Eurocard standard at 100 x 160 mm, and the front plate spans 8 HP with a height of 128 mm for direct insertion into DIN-rail card frames. The amplifier is energized from a split supply of ±15 VDC drawn from the host rack, and its current demand is less than 200 mA, reducing heat load on the shared power bus. Input commands are accepted through a differential control channel centered on ±10 V, enabling straightforward connection to PLC analog outputs. Field wiring terminates on a 32-pin plug, which carries supply, reference, solenoid, and monitor points. An integrated coil relay switches the power stage, and the design omits an internal voltage regulator so the control path remains direct. This arrangement allows the rack supply and external command circuitry to connect without separate interface modules, which keeps the overall control layout straightforward.

Dynamic valve positioning is sharpened by a carrier signal set at 340 Hz and a superimposed dither amplitude of 3 mApp, which help reduce spool friction and deadband in hydraulic circuits. The relay coil measures 2000 Ω and is driven for only 1 ms per switching event, which helps limit electromagnetic interference on adjacent channels. With a mass of 0.15 kg, the card is easy to handle during installation, and its slim edge supports airflow inside densely populated control enclosures. These operating characteristics support stable low-speed valve response in hydraulic axes that require smooth correction of small command changes.