When it comes to space-saving switching devices, our SIGUARD safety relay combinations fully reflect market trends. However, not only are they small, but they are great performers. This is because they have a contact arrangement that allows them to switch with intrinsic safety. Normally Closed (NC) and normally open (NO) contacts are positively driven in pairs. This means that if one of the contacts welds, then the other contact interrupts the circuit. A positively driven NC contact detects the faulted NO contact. This means that the safety relay would also drop out if all of the contacts of the circuit to be protected were to weld.

Standard Safety Relays (3TK282.)
These are used to safely monitor E-Stop devices and protective doors. In addition to instantaneous release contacts, the SIGUARD basic devices are also equipped with off-delay release contacts for Stop category 1. E-Stop devices must have priority over all other functions. Resetting the drives must not initiate a restart. The E-Stop must either operate as a Stop according to Cat. 0 or Cat. 1. The basic devices of the SIRIUS Safety relays can be used for E-Stop applications up to maximum Cat. 4 according to EN 954-1. In the case of protective door monitors according to EN 1088, a distinction is made between interlocking guards and interlocking guards with tumbler The SIRIUS Safety relays are also ideal for this purpose. Controllers available up to Cat. 4 according to EN 954-1.
Control Supply Voltages - 24 VAC/DC, 115 VAC, 230 VAC
Automatic and/or Manual Start options
Versions for Stop Category 0 (immediate shutdown, no time delay)
Versions for Stop Category 1 (controlled shutdown, adjustable time delayed)
Compact housing widths of 22mm and 45mm
Certified up to Category 4 acc. to EN954-1

Relay Expansion Blocks
These must not be operated separately in safety circuits, but must be combined with a basic device. The category of a controller with expansion unit corresponds to that of the basic device.
Control Supply Voltages - 24 VAC/DC, 115 VAC, 230 VAC
3TK2830 Series offers 4 N.O. safe expansion contacts, 22mm width
3TH42 Series Relays offer 8 N.O. positive guided expansion contacts
3TH43 Series Relays offer 10 N.O. positive guided expansion contacts

Two Hand Control Relays - Press Control Devices (3TK2834)
The two-hand control is a device the operator's hands are required to be on the two-hand control panel at the same time within a time window of 500 ms. These press control systems are ideal for controllers of excenter, hydraulic and fly presses up to Cat. 4 according to EN 954-1. Type III C according to EN 574 is also available especially for presses.
Control Supply Voltages - 24 VAC/DC, 115 VAC, 230 VAC
2 N.O. Safe Contacts and 2 N.C. Signalling Contacts
Certified up to Category 4 acc. to EN954-1

The SIRIUS Safety Relays - Solid State Outputs (3TK284.)

.........Fast, safe and wear-free switching!

Safety Relays with electronic components are clearly establishing themselves in safety-related applications. It’s natural – the advantages are quite clear: Due to permanent function monitoring and wear-free operation, a significantly higher switching frequency and longer electrical lifetime is achieved. The compact and light devices also feature an input that allows for cascading of multiple relays or even a command from a PLC that permit safe logical circuits to be created. The devices can be supplemented by the 3TK2830 expansion units if several or electrically isolated (dry contact) enable circuits are required in your application. It goes without saying that you can depend on our electronic safety combinations providing a maximum of safety; they are certified for Category 4 according to EN 954-1 and SIL 3 (Safety Integrity Level) according to IEC 61508. SIGUARD electronic safety combinations can be controlled through 1 or 2 channels. They are suitable for monitored as well as automatic start, for EMERGENCY OFF or protective door monitoring.

Solid -Safety Relay (3TK284.)

Permanent, cyclical self test in sensor/actuator circuit
Sensor leads up to 200m
1 & 2 Channel Inputs
Versions for Stop Category 0 (immediate shutdown, no time delay)
Versions for Stop Category 1 (controlled shutdown, adjustable time delayed)
Expandable and Cascading
Autostart and Manual Start
Control Supply Voltages - 24 VDC
Compact housing widths of 22mm and 45mm
Certified up to Category 3 & 4 acc. to EN954-1
Certified up to SIL 2 & 3 acc. to IEC 61508

Solid-State Safety Relay with Dual Auxiliary Relays (3TK285.)

With these devices, solid-state safety combinations are connected with 3RH control relays. This combination is supplied as a complete self contained unit, fully wired up and tested for snapping on to a standard DIN rail. This combines the advantages of a solid-state safety relay and those of control relays with positive-driven contacts as a single device. It has been certified by the appropriate authorities as a complete unit.

Same rich features as the above 3TK284. with the addition of the following

Integrated redundant dual auxiliary relays of the modular SIRIUS 3RH Series
Wired and tested as a complete unit
Control Supply Voltages - 24 VDC, 115 VAC, 230 VAC
Housing width of 90mm
Certified up to Category 3 & 4 acc. to EN954-1
Certified up to SIL 2 & 3 acc. to IEC 61508

The safety relay product range is one of the cornerstones of safe control technology at PILZ. In 1968 Pilz developed the first two-hand control relay, followed in 1987 by the first emergency stop relay PNOZ, designed to protect both man and machine. Other applications followed, and the combination of technical expertise and innovative ideas produced safety relays to cover all technical safety requirements. The PNOZ has been approved by TÜV, BG and many other standards institutions and offers users considerable benefits, for example, saving the laborious process of wiring relays when constructing a safety-related circuit. PNOZ Safety Relays for all Applications: E-Stop Safety Gates Light Curtains Muting Light Curtains Safety Mats Two Hand Controls Safety Timing Relays PNOZ® product ranges - optimum safety solution for each application
PNOZ X Range Units from the PNOZ X series were introduced to the market in 1996. They were the first series to have the yellow housing and two terminal blocks. PNOZ X units are also available with plug-in terminals. Technically they are based on electromechanical contacts using two relay technology. Sizes vary from 22.5 to 90 mm.
PNOZ elog Range Pilz has now brought a new generation of PNOZ on to the market: a series of electronic safety relays. This innovative series adds the advantages of modern electronics to the classic electromechanical PNOZ: wear-resistance, safety, long service life and high availability ensure it is cost-effective to use.
PNOZ multi Range With the development of the PNOZmulti, Pilz is launching the world's first freely configurable PNOZ. The modular electronic safety system for functions such as E-STOP, safety gates, light barriers, two-hand and many more, consists of a base unit and several expansion modules
PNOZ power Range PNOZpower is a new range of safety relays for monitoring E-Stops, safety gates and light barriers, in proven modular technology. Safety relays are used as standard as the controlling element in control cabinets. The maximum breaking capacity is 6 to 8 amperes AC/DC. That is generally sufficient for shutting down the control circuit. Until now it has not been possible to switch higher capacities directly, i.e. without interconnecting relays. PNOZpower can switch currents up to 16 A AC/DC per contact. An overall breaking capacity of 40 A is available per module. In each case, external relays and relay combinations are no longer required. The base module processes the inputs; the output modules are specifically matched to the respective load. The number and capacity of the required safety contacts can be scaled, depending on the application. A maximum of 4 modules can be connected to the base unit. Modules are wired to the base unit via an internal bus system
PNOZ SIGMA PRODUCT RANGE - Maximum function in minimum width The new compact safety relays PNOZsigma combine Pilz's many years of experience with today's very latest safety technology: with minimum effort you can achieve the maximum in safety and economy. With particularly narrow housing widths and multifunctionality compressed into each unit, PNOZsigma offers maximum functionality in minimum width. As of now you can implement safety technology that saves more space, is more flexible, is quicker, and therefore more efficient. PNOZsigma monitors safety-related functions such as E-STOP, safety gate, light curtain or two-hand control on independent stand-alone machines. Just a few unit types cover a wide range of applications.

Safety Relays

The safety relays from Phoenix Contact currently provide the highest safety standard for emergency stop and safety door circuits, as well as two-handed control systems.

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The SIRIUS Safety Relays - Mechanical Contact Outputs (3TK282.)

The SIRIUS Safety Relays - Solid State Outputs (3TK284.)

.........Fast, safe and wear-free switching!

PNOZ Safety Relays for all Applications:

PNOZ® product ranges - optimum safety solution for each application

PNOZ X Range

PNOZ elog Range

PNOZ multi Range

PNOZ power Range

PNOZ SIGMA PRODUCT RANGE - Maximum function in minimum width

Safety Relays