Why Choose the Pizzato FD 20R2-FM2 Safety Switch with Manual Mechanical Delay?
The Pizzato FD 20R2-FM2 is a robust safety switch with separate actuator and manual mechanical delay designed for controlled access to machine guards, doors and protective enclosures in industrial safety applications. As part of the Pizzato FD series, it combines a durable metal housing, positive-opening safety contacts and a manually operated delay mechanism for dependable machine guarding.
The switch incorporates a 1NO + 2NC slow-action contact block and a manual mechanical delay head with a short knob and approximately 20 s delay. This arrangement provides electrical guard monitoring while requiring the operator to complete the mechanical release sequence before access can be obtained, making it particularly useful where machinery requires time to reach a safe condition after a stop command.
The FD 20R2-FM2 features a straight separate actuator, a metal FD-series housing with an M20 × 1.5 conduit entry and IP67 protection according to EN 60529. Its positive-opening operation and industrial construction make it suitable for safety guarding on production machinery, automated equipment and other demanding machine applications.
Key Advantages
- Manual mechanical delay helps control access to hazardous machine areas.
- Approximately 20 s release delay with short operating knob.
- 1NO + 2NC slow-action contacts for machine safety and status signalling.
- Positive-opening operation for dependable opening of the safety contacts.
- Durable metal FD-series housing for industrial environments.
- IP67 protection provides resistance to dust and temporary water immersion.
- Straight separate actuator supports reliable guard and access-door monitoring.
Key Features
- Pizzato FD series safety switch.
- Safety switch with manual mechanical delay and separate actuator.
- 1NO + 2NC slow-action (B20) contact block.
- 20 s manual mechanical delay.
- Short operating knob.
- Straight actuator.
- Metal housing with one M20 × 1.5 threaded conduit entry.
- IP67 protection according to EN 60529.
- Positive-opening contacts.
Controlled Guard Access with Manual Mechanical Delay
Safety switches with manual mechanical delay are designed for applications where access to a guarded area should not be immediate after a machine stop request. The operator manually operates the delay mechanism before the actuator can be released, providing a defined period for hazardous machine movement or processes to cease before the guard is opened.
The Pizzato FD 20R2-FM2 combines this delayed-access principle with positive-opening contacts and a separate actuator. When correctly incorporated into the machine safety system, the switch can monitor the position of a movable guard while providing a straightforward mechanical means of delaying access without relying on an electrically operated guard-locking solenoid.
Typical Applications
- Machine guard doors and access panels.
- Industrial production and assembly machinery.
- Automated manufacturing equipment.
- Packaging and processing machinery.
- Machinery with residual movement following a stop command.
- Conveying and material handling systems.
- Industrial safety interlocking and access-control systems.
