Lovato SRPMFA164 is a 24 V DC programmable multifunction safety relay with 16 digital safety inputs and 4 pairs of OSSD safety outputs for machinery safety applications up to Category 4, PLe and SIL 3.
£1,061.24
The Lovato SRPMFA164 is a versatile programmable multifunction safety relay designed to manage multiple machinery safety functions within a single standalone controller. As part of the Lovato SRP programmable safety relay series, it combines extensive safety inputs and outputs with configurable logic, helping machine builders and automation engineers simplify safety circuits and reduce conventional wiring.
The SRPMFA164 provides 16 digital safety inputs, four independent restart/EDM inputs, four pairs of OSSD safety outputs, four programmable status outputs and four test outputs. It can monitor equipment including emergency stops, safety light curtains, laser scanners, electromechanical interlocks, RFID safety sensors, safety mats and two-hand controls, allowing numerous safety functions to be consolidated within one programmable device.
Operating from a nominal 24 V DC supply, the SRPMFA164 supports machinery safety systems up to Category 4, PLe and SIL 3. Configuration is performed using Lovato SRPSW software, while its compact DIN rail housing makes the controller suitable for installation within industrial control panels and machinery safety cabinets.
Programmable safety relays such as the Lovato SRPMFA164 allow multiple safety devices and functions to be monitored through a common configurable controller. Instead of implementing each safety function using separate conventional safety relays, designers can create the required safety logic in software while maintaining dedicated safety-rated inputs and outputs.
The SRPMFA164 can monitor optoelectronic sensors, emergency stops, mechanical safety switches, safety mats, two-hand controls and RFID safety sensors. Its configurable logic supports functions including muting, timers and counters, making the controller suitable for machinery where several interdependent safety functions must operate together while achieving safety performance up to Category 4, PLe and SIL 3.
| HS Code | 8537109199 |
|---|---|
| Manufacturer | Lovato Electric |
| Series | SRP Programmable Safety Relays |
| Model | SRPMFA164 |
| Product type | Programmable multifunction safety relay |
| Nominal auxiliary supply | 24 V DC |
| Supply operating range | 19–29 V DC |
| Digital safety inputs | 16 |
| Digital input type | PNP active high, EN 61131-2 Type 3 |
| Restart / EDM inputs | 4 independent programmable inputs |
| Safety outputs | 4 pairs of OSSD outputs |
| Safety output type | Solid-state PNP active-high OSSD |
| OSSD output rating | 400 mA at 24 V DC maximum |
| Status outputs | 4 programmable PNP outputs, SIL 1 / PL c |
| Test outputs | 4 |
| Safety category | Category 4 according to EN ISO 13849-1 |
| Performance level | PLe according to EN ISO 13849-1 |
| Safety integrity level | SIL 3 according to EN 61508 |
| Maximum SIL | SIL 3 according to IEC 62061 |
| Type | Type 4 according to EN 61496-1 |
| PFHd | 1.50E-8 |
| SFF | 99.7% |
| Diagnostic coverage (DCavg) | 98.9% |
| MTTFd | 160.81 years |
| Device lifetime | 20 years |
| Response time | 22–24 ms maximum |
| Maximum dissipated power | 6 W |
| Insulation voltage | 4 kV |
| Overvoltage category | III |
| PC connection | USB 2.0 Hi-Speed |
| Protection rating | IP20 enclosure / IP2X terminals |
| Pollution degree | 2 |
| Mounting type | DIN rail quick coupling according to EN 60715 |
| Dimensions (H × W × D) | 108 × 45 × 114.5 mm |
| Operating temperature | -25 to +55 °C |
| Storage temperature | -30 to +70 °C |
| Relative humidity | ≤95% |
| Certifications | cULus, TÜV |
| Conformity | EN ISO 13849-1, EN IEC 61496-1, EN 61508, IEC 62061, EN 81-20 and EN 81-50 |
The SRPMFA164 is a programmable multifunction safety relay used to monitor and control multiple machinery safety functions, including emergency stops, light curtains, laser scanners, safety switches, RFID sensors, safety mats and two-hand controls.
The controller provides 16 digital safety inputs, four independent restart/EDM inputs, four pairs of OSSD safety outputs, four programmable status outputs and four test outputs.
The Lovato SRPMFA164 has a nominal auxiliary supply of 24 V DC, with an operating range of 19–29 V DC.
The SRPMFA164 can support machinery safety systems up to Category 4 and PLe according to EN ISO 13849-1 and SIL 3 according to applicable functional safety standards.
The SRPMFA164 is configured using Lovato SRPSW programming software and connects to a PC through its USB 2.0 interface, allowing safety functions and logic to be configured for the application.
Lovato SRP programmable safety relays provide machine builders and automation engineers with a flexible platform for consolidating multiple safety functions, simplifying machine wiring and implementing configurable safety logic for demanding industrial applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...