All-in-One Control for Proportional Pinch Valves
Resolution Air, Ltd.’s Easy Pinch Controller (EP-1) is a compact motion control system combining a high performance stepper motor driver, intelligent controller with a full-color touch screen HMI. Purpose-built to optimize the performance of our patented Proportional Pinch Valves, the EP-1 enables fast deployment, simplified validation, and consistent performance. Its dual mode design supports both 4-20 mA analog as well as digital on/off control. This all-in-one architecture simplifies system design, reduces wiring complexity, and improves reliability in automation environments. In addition, the EP-1 enables single-use system designers to simplify motion control, accelerate equipment deployment, and maintain consistent performance — while supporting the flexibility that disposable bioprocessing demands.
Key Features
The EP-1 simplifies motion control, accelerates equipment deployment, and maintains consistent performance across demanding applications.
Dual Mode Functionality
- Analog mode: 4-20 mA input signal controls valve position
- Digital mode: 5-24 VDC input signal provides On/Off functionality mimicking traditional pinch valve operation
Simplified Integration
- Simplified control development and integration
- Complex stepper motor coding eliminated
- Input requirements: 4-20 mA analog, 5-24 VDC digital
- Reduced time and cost associated with developing a custom control solution
Intuitive Color Touch Screen Interface
- On screen configuration of performance parameters including: speed, acceleration, micro-stepping, idle current, analog and digital control
- No PLC required for set-up or adjustments
Precise Motor Current Adjustment
- Current settings are rotary switch selectable for both the MPPV and HPPV valve series
- Enables quick tuning for different valve models or load conditions
Compact & Flexible Mounting
- Combines driver, controller, and HMI into a single unit
- Reduces panel space and overall system cost
- Compact footprint ideal for mobile carts and modular skids
- DIN rail mounting brackets or back plate mountable
Electrical Specifications
Key technical parameters for the EP-1 Easy Pinch Controller.
| Motor Type | Bi-Polar Chopper Motor (MPPV, HPPV valve series) |
| Control Inputs | Analog: 4-20 mA Analog | Digital: 5-24 VDC, Optically Isolated |
| Motor Current | Rotary Switch Selectable, 0-0.820 mA rms (maximum) |
| Display | Full Color Touch Screen (resistive touch) |
| Power Supply | +24 VDC supply |
| Analog Input Resolution | 16 Bit |
| Dimensions (MPPV Series) | 5.625″ × 3.437″ × 1.175″ |
Download EP-1 Technical Data Sheet
Common Applications
Common Applications
- Automated machinery
- System pressure control circuits
- Process automation
- Laboratory and test equipment
Common Single-Use (SU) Applications
- Single-use pinch valve actuation
- Media and buffer transfer skids
- Single-use filtration systems
- Chromatography and TFF modules
- Bioreactor feed, bleed, and harvest systems
- Pilot and clinical-scale production equipment
Compatible Valve Series
The EP-1 is designed to work with both Resolution Air proportional pinch valve families.
M Series (MPPV)
Miniature proportional pinch valves for low-flow, high-precision applications. The EP-1 is rotary switch selectable for quick tuning to MPPV valve models.
H Series (HPPV)
Hybrid proportional pinch valves for larger tubing and higher flow applications. The EP-1 supports HPPV valve series with the same rotary switch current selection.
Technical Resources
Access documentation to support EP-1 evaluation, integration, and system design.
Ready to Evaluate the EP-1?
The EP-1 Easy Pinch Controller is available for evaluation with both M Series and H Series proportional pinch valves. Contact our engineering team to discuss your application requirements and get started.
