The VT-RK5-30 proportional amplifier, manufactured by Bosch Rexroth Indramat and part of the VT-SSPA Plugin Proportional Amplifiers series, delivers precise control and robust performance for industrial motion systems. It operates on a 24 V DC power supply and features an IP65 to EN 60529 protection rating for complete defense against dust and water ingress. The amplifier provides a Nominal Current: 1.6 A output and supports a Maximum Current (adjustment Range): up to 1.7 A to accommodate varying actuator loads. A Minimum Coil Inductance (lmin): 15 mH ensures proper current regulation and stability across operating conditions. Users can tailor dynamics with a Ramp Time (adjustment Range): 100 ms to 5 s, optimizing acceleration and deceleration profiles for diverse applications. This compact module integrates seamlessly into existing control cabinets, reducing footprint without compromising on performance.
Featuring an adjustable Biasing Current (adjustment Range): 0…300 mA with a factory default set at 100 mA, the VT-RK5-30 enables fine-tuning of valve linearity and hysteresis compensation. At full load, the Clock Frequency At Imax: 340 Hz maintains consistent switching performance, even under rapid modulation demands. The Command Value Input – Proportional Range: 0…10 V channel delivers high-resolution output control, while the Command Value Input – Switching Range: 12 V…UB supports binary on/off commands. An Input Resistance: 20 kΩ minimizes signal loading and ensures accurate voltage-to-current conversion. Flexible wiring is provided by Cable Connection: 4 screw terminals and 4-pin M12 connector (M12×1), accommodating cable diameters from 4.5 to 11 mm for secure, vibration-resistant cabling. Thermal and electrical safeguards maintain stability during continuous operation in heavy-duty industrial environments.
Designed for reliability, the VT-RK5-30 withstands extreme temperatures from –25 °C to +70 °C, ensuring uninterrupted service in cold storage, outdoor, and high-heat production lines. The IP65 enclosure and rugged connector options support integration into hydraulic manifolds, servo valves, and proportional valve assemblies without additional protection. Compact dimensions and plugin architecture simplify maintenance and replacement, reducing downtime in automated systems. Typical applications include injection molding machines, mobile hydraulics, and process control skids where consistent pressure regulation and rapid response are critical. Backed by Bosch Rexroth Indramat’s engineering expertise, this amplifier delivers dependable proportional control for demanding industrial automation tasks.
Biasing Current (adjustment Range)
0...300 mA
Biasing Current (factory Setting)
100 mA
Cable Connection
4 screw terminals and 4‑pin M12 connector (M12×1)
Cable Diameter
4.5 to 11 mm
Clock Frequency At Imax
340 Hz
Command Value Input – Proportional Range
0…10 V
Command Value Input – Switching Range
12 V...UB
Input Resistance
20 kΩ
Maximum Current (adjustment Range)
Up to 1.7 A
Minimum Coil Inductance (lmin)
15 mH
Nominal Current
1.6 A
Operating Temperature Range
-25°C to +70°C
Operating Voltage
24 V DC
Protection Rating
IP65 to EN 60529
Ramp Time (adjustment Range)
100 ms to 5 s