VT 3006 S34 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat VT 3006 S34 is an analog amplifier from the VT 3000 Analog Amplifiers series with a maximum solenoid current of 800 mA and an operating voltage of 24 VDC. It uses a 32-pin DIN 41612 Form D connection and measures 100 x 160 mm. The amplifier features a pulse frequency of 170 Hz and a command input range of ±9 V for inputs 1-4.
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Product Description:
Bosch Rexroth Indramat supplies the VT 3006 S34 plug-in analog amplifier as a member of the VT 3000 Analog Amplifiers series. The card plugs into a standardized rack and conditions command voltages so directional or proportional valves receive controlled current, enabling precise hydraulic actuation in industrial automation systems. It generates a stabilized reference, compensates for solenoid resistance, and incorporates relay logic so external controllers can modulate pressure or flow with repeatable accuracy. Designed for modular 19-inch Eurocard frames, the module interfaces directly with valve coils and on-machine sensors without additional signal converters.
Power for the amplifier is drawn from a nominal 24 VDC (+60%/-5%) supply; internal regulation derives a ±9 V reference within ±1% for stable circuitry. The unit consumes <50 VA, minimizing cabinet heat. Its output stage modulates a 170 Hz carrier within a tolerance of ±10% to reduce valve hysteresis. Differential inputs up to ±10 V are accepted, and a 100 kΩ input resistance avoids loading upstream hardware. Channels 1–4 use ±9 V spans, while channel 5 accepts ±6 V when reduced travel is required. The Eurocard board measures 100 × 160 mm, allowing it to fit standard card cages.
A bias network delivers 20 mA within a tolerance of ±25% to center the valve spool when no external command is present. During operation, the current driver can supply up to 800 mA to the solenoid, a level compatible with coils that have 19.5 Ω of cold resistance. A protective fuse rated at 2.5 A T limits fault energy, and supply continuity is monitored by a relay with a coil resistance of 2,150 Ω that actuates once the line exceeds 16.8 V. Field wiring reaches the board through a 32-pin DIN 41612 Form D connector, providing a secure rack connection without requiring individual leads to be disturbed. Internal feedback maintains pulse symmetry by adjusting the duty cycle according to solenoid resistance and the selected bias current.
