Why Choose the Pizzato NG 2D7D421A Safety Switch with Guard Locking?
The Pizzato NG 2D7D421A is an RFID safety switch with guard locking from the Pizzato NG series, designed for monitoring and controlling access through movable guards on industrial machinery. It combines non-contact RFID actuator detection with a robust electromechanical locking mechanism in a metal housing.
This model uses operating principle D, meaning the actuator is locked when the solenoid is de-energised. It also incorporates an escape release pushbutton, providing a means of releasing the locking mechanism from inside a protected area when the switch is correctly incorporated into the machine guarding system.
The NG 2D7D421A provides two IS1–IS2 safety inputs and two OS1–OS2 safety outputs, together with dedicated signalling outputs for actuator-inserted and actuator-locked status. It uses Mode 2 safety-output activation, has a maximum actuator holding force of 9750 N, and features a metal housing with three M20 × 1.5 threaded conduit entries. This base model is supplied without an actuator.
Key Advantages
- Combines RFID guard monitoring and electromechanical guard locking in one device.
- Principle D keeps the actuator locked when the solenoid is de-energised.
- Escape release pushbutton supports release from inside the protected area.
- Maximum actuator holding force of 9750 N.
- Two safety inputs and two electronic safety outputs support integration into compatible safety systems.
- Separate signalling outputs indicate actuator inserted and actuator locked conditions.
- IP67 / IP69K protection supports demanding industrial environments.
Key Features
- Pizzato NG series RFID safety locking switch.
- Operating principle D: actuator locked with de-energised solenoid.
- Escape release pushbutton.
- Mode 2: safety outputs active with actuator inserted.
- 2 safety inputs: IS1–IS2.
- 2 safety outputs: OS1–OS2.
- O3 signalling output: actuator inserted.
- O4 signalling output: actuator locked.
- I4 or IE1–IE2 inputs for solenoid activation.
- I3 input for actuator programming/reset.
- Metal housing.
- Three M20 × 1.5 threaded conduit entries.
- Rotating head.
- 9750 N maximum holding force.
- Base model supplied without connector and without actuator.
RFID Guard Monitoring with Power-to-Unlock Safety
The Pizzato NG series combines RFID actuator detection with a mechanical guard-locking system. The switch electronically detects a compatible coded actuator while independently providing information about whether the actuator is inserted and whether the locking mechanism has secured it, allowing a compatible safety-related control system to supervise the condition of the guarded access point.
On the NG 2D7D421A, principle D keeps the actuator locked while the solenoid is de-energised, providing a power-to-unlock arrangement. The integrated escape release pushbutton is intended for applications where a person inside the protected area may need to release the guard-locking mechanism. Compatible VN NG-F30 and VN NG-F31 actuators are available separately, allowing selection between low- and high-level RFID coding according to the machine safety design.
Typical Applications
- Robotic cells and automated manufacturing systems.
- Machine guards protecting equipment with residual hazardous movement.
- Guarded areas requiring an internal escape-release function.
- Packaging and processing machinery.
- Machine tools and automated production equipment.
- Hinged and sliding industrial safety doors.
- OEM machinery requiring RFID guard monitoring and robust guard locking.
