Our TÜV-certified SIL coupling relays for safe switch-on and switch-off enable the electrical isolation of signals up to SIL 3. System downtimes can be reduced to a minimum by diagnostic functions, such as integrated proof test and line load monitoring. The SIL 3 coupling relays with ATEX, G3 coating, and temperature range up to 70°C are suitable for special applications in the process industry.
Applications in the process industry are fundamentally different from those in the manufacturing industry. As such, safety technology has different demands to meet in this industry.
Safe coupling relays are often used in process technology systems; they electrically isolate and amplify the power of electrical signals for functional safety. Phoenix Contact has developed SIL-certified coupling relays to meet the demands of process technology applications.
Phoenix Contact has force-guided coupling relays and safe force-guided coupling relays in its portfolio. Forced guidance prevents N/O and N/C contacts from closing at the same time by mechanical means. Therefore, this technology features the highest level of functional safety.
The safe coupling relays are SIL-certified as well. SIL, or safety integrity level, is a method for assessing a system's reliability. Levels SIL 1, SIL 2, and SIL 3 must always be viewed in relation to the hazard.
If you choose our SIL-certified coupling relay, you will not need to conduct an assessment. The SIL coupling relays have been tested and certified by an independent institute. All safety-relevant characteristic data is therefore available. You can also carry out comprehensive diagnostics with an integrated test pulse filter.
The Phoenix Contact product portfolio features SIL-certified coupling relays for safe switch-on (also known as fire and gas or energized to safe) and for safe shutdown (emergency shutdown or de-energized). Our safe coupling relays meet the specific demands of the process industry – including for use in potentially explosive areas.
Choose between the highly compact PSRmini product range and the conventional PSRclassic product series in a market-standard design.
With an overall width starting from just 6 mm, the PSRmini coupling relays are the narrowest SIL coupling relays on the market.
In the PSRclassic series, you will find SIL coupling relays for safe switch-off. The conventional coupling relays are characterized by a wide range of functions and versions. The housing width corresponds to the market standard.
The safe coupling relays are tailored to control systems in the process industry.
These include the following safety instrumented systems (SIS):
The force-guided contacts enable easy and quick diagnostics. This ensures short downtimes during scheduled maintenance phases.
Easy proof test
The Termination Carriers are designed to accommodate the PSRmini and PSRclassic. With the module carriers, you can reduce your wiring outlay and speed up installation.
With a consistent concept and specific system technology, you avoid wiring errors with the Termination Carrier, and therefore eliminate the cause of expensive and time-consuming troubleshooting. We'll be happy to adapt the Termination Carriers to suit your specific requirements.