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Technical specifications
1Key technical specifications
The most critical technical parameters of this product.
- Supply24V DC
- Operating principlePneumatic pressure detection
- OutputNO + NC dry contact
- SensitivityAdjustable potentiometer
- Band lengthMax 3 m (site-based)
- Response time< 100ms (pinch → stop)
Show all technical specifications (8)
Mechanical
| Feature | Value |
|---|---|
| Operating temperature | -20 – +55°C |
Certification
| Feature | Value |
|---|---|
| Safety class | CE EN 12453 |
Overview
r-tec PN4 Pneumatic Control Module provides pneumatic edge safety band control for automatic doors, industrial sectional and barriers. When an object is pinched in the air-filled soft band on the door/leaf bottom edge, it detects the pressure change and instantly stops the motor. It is a mandatory accessory within the CE EN 12453 safety class.
How does it work?
- Pneumatic band is attached to the door/leaf bottom edge
- Band is filled with air (4-6 mbar low pressure)
- PN4 module continuously monitors band pressure
- When object/person pinched → band crushes → pressure drops
- PN4 raises alarm → motor stop signal
Advantage: Detects low objects (foot, pet, child) that photocells cannot detect. Photocell + PN4 combination = full perimeter protection.
Photocell vs PN4 — difference
| Detection type | Photocell | PN4 Pneumatic |
|---|---|---|
| Principle | Optical (beam break) | Mechanical (pressure) |
| Position | Side walls | Door/leaf edge |
| Detection | Entire object | At time of pinch |
| Height | At certain height | All heights |
| False alarm | Can occur in dust | Low (mechanical) |
| Compliance | Standard | CE EN 12453 mandatory |
→ PN4 must always be used at sites with child and pet risk. Photocells cannot detect the lower 30-50 cm of the door; PN4 fills the gap.
Target projects
- Automatic door (hospital, mall, office — child + elderly at risk)
- Industrial sectional door (forklift operator protection)
- Barrier (low vehicle + bicycle protection)
- Garage door (child + pet protection)
- Automatic sliding glass doors (busy pedestrian entries)
- Cold storage door (operator protection)
Field discipline
- Band tension calibration — Band is set to 4-6 mbar pressure during first commissioning
- Sensitivity potentiometer — Too sensitive = false alarm; less sensitive = pinch not detected
- Band check — Visual check every 6 months; worn/punctured band renewed
- Winter cold — Band flexibility decreases below -20 °C; tight calibration done
- Periodic test — Monthly manual test (squeeze band → did motor stop?) mandatory
- CE certificate site — Module + band + certificate file kept on site (for audit)
Contact our team for model-specific information or a quote.