Product Description:

The VT 11011-12 is an amplifier module produced by Bosch Rexroth Indramat for the VT Servo Amplifiers series. It receives low-level control signals from PLCs or motion controllers and converts them into regulated current for proportional hydraulic valves or compact servo actuators, enabling closed-loop speed, position, or pressure control in automated production lines. By combining electronic triggering with a compact rail-mounted format, the module streamlines cabinet wiring and reduces the installation space required in industrial machinery.

Internally, the pulse generator operates at 170 Hz with a tolerance of ±15%, setting the modulation rate for the two output stages. The differential command channel accepts input swings of ±10 V, allowing direct connection to standard analog controllers without additional scaling. From a 24 V DC supply, the unit draws up to 36 VA and delivers a maximum load current of 1.5 A to the valve coils. The nominal operating voltage is 24 VDC, and the electronics remain stable from 21 V to 35 V, so brownouts and minor overvoltage events do not interrupt actuation. Two transistorized output stages share the available current and are sequenced by the internal clock to keep coil heating within acceptable limits.

The housing measures 79 mm in height, 40 mm in width, and 85.5 mm in depth, allowing it to fit into compact control enclosures. It clips onto a TH 35-7.5 top-hat rail without additional brackets. Field wiring terminates on 12 screw terminals, each covered by finger-safe guards that support the unit’s IP20 protection rating. Reverse-polarity protection prevents damage if the 24 V power connection is accidentally inverted. With a mass of only 0.14 kg, the module adds minimal load to light-duty panels while remaining securely mounted during vibration. The narrow housing leaves room for adjacent control components and supports orderly wire routing inside densely populated cabinets.