From PLC Logic to Precision Motion: Safe Proportional Valve Control
Still hitting a wall trying to drive proportional hydraulic valves from your PLC? If your PLC only gives you a 0-10V analog output, driving high-current PWM proportional valves directly isn’t an option: you need power, precision and safety in between. That’s exactly the gap we closed.
The challenge
Your PLC gives you a clean 0-10V analog signal. But your hydraulic system needs high-current PWM control up to 2.5 A to actually move a proportional valve. That gap is where a lot of automation projects get stuck.
The solution
We built a dedicated valve driver: MRS Electronic’s rugged, field-proven CAN I/O hardware combined with EHR Elektronik’s motion control firmware and calibration software. Feed it your PLC’s 0-10V output and it delivers safe, precise, high-current PWM control to your proportional valves.
Key features
- 3 independent proportional channels, each individually calibrated (min / max / deadband)
- Built-in interlock safety logic: conflicting commands never reach the valve simultaneously
- System-wide deadman switch: a true fail-safe by design
- Smooth ramp control to protect cylinders, valves and structure from shock loading
- Live CAN bus diagnostics with a custom-built PC calibration tool
- Industrial-grade hardware, built for mobile hydraulics, not the lab
Why it matters
You keep your PLC logic simple. We turn that logic into safe, powerful, precise valve motion: professionally engineered and field-ready.
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