Why Choose the Lovato SRAMF21 Multifunction Safety Relay?
The Lovato SRAMF21 is a compact multifunction safety relay designed to monitor and control a wide range of machine safety devices from a single DIN-rail mounted module. Part of the Lovato SRA safety relay series, it combines 2NO safety outputs and 1 PNP signalling output with selectable safety functions for flexible integration into industrial machinery and automation systems.
The SRAMF21 supports applications including emergency-stop circuits, safety gate monitoring, two-hand control devices, RFID safety sensors and safety devices with fail-safe OSSD outputs. The required function is selected using the frontal trimmer, allowing one relay to cover multiple common machine-safety applications while simplifying component selection and panel design.
Operating from a nominal 24 V DC auxiliary supply, the SRAMF21 provides two normally open safety relay outputs with forcibly guided contacts plus a PNP feedback/signalling output. It is designed for safety systems up to Category 4 and Performance Level e (PLe) according to ISO 13849-1, making it suitable for demanding safety-related control applications.
Key Advantages
- Multifunction safety relay combines several machine-safety functions in one device.
- Supports safety applications up to Category 4 and PLe.
- 2NO safety outputs + 1 PNP feedback output for flexible control and signalling.
- Compatible with emergency stops, safety gates, RFID sensors, OSSD devices and two-hand controls.
- Simple function configuration using a front-mounted selector trimmer.
- 24 V DC auxiliary supply suits standard industrial control systems.
- Compact 35 mm DIN rail mounting simplifies control-panel installation.
- Forcibly guided output relay contacts support dependable safety circuit operation.
Key Features
- Lovato SRA series multifunction safety relay.
- 2NO + 1PNP output configuration.
- 2 safety NO outputs.
- 1 PNP feedback/signalling output.
- 24 V DC nominal auxiliary supply.
- 19–29 V DC auxiliary supply operating range.
- 2 inputs with 0–30 V DC input voltage range.
- Relay outputs with forcibly guided contacts.
- Safety performance up to Category 4, PLe.
- Supports fail-safe OSSD safety devices and RFID sensors.
- Supports emergency-stop and safety-gate monitoring applications.
- Supports two-hand control devices and Type 2 safety photocells.
- 35 mm DIN rail mounting.
Flexible Safety Monitoring for Industrial Machinery
A multifunction safety relay provides safety-related monitoring between protective devices and the machine control circuit. The Lovato SRAMF21 consolidates several common safety functions into one module, allowing the required application to be selected using the dedicated frontal trimmer rather than installing separate specialised relays for each type of safety device.
The SRAMF21 can monitor emergency-stop devices, safety gate systems, two-hand controls, RFID sensors and devices with fail-safe OSSD outputs such as safety light curtains. Its two forcibly guided NO safety outputs provide the safety switching interface, while the additional PNP output can be used for feedback or signalling within the control system.
Typical Applications
- Emergency-stop monitoring circuits.
- Safety gate and guard monitoring systems.
- RFID safety sensor applications.
- Safety light curtains and other fail-safe OSSD devices.
- Two-hand machine control devices.
- Type 2 safety photocell applications.
- Mechanical safety interlock monitoring.
- Industrial machinery and automated production systems.
