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Application:
Safety switches with separate actuator are suitable for sliding, hinged and particularly removable safety guards, which need to be closed to ensure the necessary operational security. They are also suitable for fitting on profile sections and existing equipment.
In combination with safety control modules all safety switches with class 2 shown in this chapter achieve Control Category 3 or 4 to EN 954-1.
Design and mode of operation:
On the safety switches with class 2, the switching element is not physically connected to the actuator but functionally brought together or separated for switching. When the guarding device is opened, the actuator is separated from the base unit. In the process, NC contacts are positively opened and NO contacts closed.
Enclosure rating of all the safety switches is IP 67. The safety switches can be fitted in any desired mounting position.
Schmersal make both standard and AS-i Safety at Work safety switches with separate actuator.
Or for the standard models click below
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Guardian Line Heavy Duty - Stainless Steel - Type GLHL/R-SS
The GLHL/R-SS is a robust Heavy Duty Safety Rope Pull switch designed to protect long conveyor lengths were protection is required up to 125m using two switches or up to 100m using a single switch. The Stainless Steel 316 housings are designed specifically to withstand the tough environments found in the Food and Pharmaceutical industries. They will survive chemical and detergent washdown by providing all stainless steel parts and robust IP67 sealing by using integral bellows and gaskets. They can be used to compliment the GLHD-SS versions at each end of the rope span
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Ratings 25 - 125A three and four pole
Comply with IEC 947-3 AC23 utilisation category
Disconnecting electrical equipment from the main
Visible indication of contacts status (when operation handle is in the 'OFF' position all contacts are open)
Red/Yellow emergency stop operating handle
Handles padlockable in the 'OFF' position
Front and rear mounting options
Special emergency stop switches with undervoltage release available
Enclosed versions available
Wide choice of accessories : terminal shrouds, black/grey operating handles, auxiliary contact blocks, fixed and switched neutral add-on contact poles, shaft extensions for greater panel depth operation
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Safely equipped for all cases
According to EN 292-2 (Machine safety), movable guards must be provided with safety switches. Protective door bolts for protective devices work in tandem with SICK safety switches. On deliberate opening of the protective device, the N/C contact of the safety switch is opened and the hazardous motion of the machine is brought to a standstill.
Developed for harsh industrial everyday use
SICK products easily withstand harsh conditions such as impacts and vibrations. Opening, closing and locking is reliably guaranteed over a long lifetime. SICK safety switches are available in plastic or metal versions.
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Ex-Safety and Main Current Switches
CEAG safety switches can be protected against inadvertent switching on by our integrated locking facility for up to three padlocks in the OFF position.
To prevent manipulations, the enclosure covers cannot be opened in the locked position without destroying the enclosure itself.
All CEAG safety switches feature full AC-3 motor switching capacities and isolating properties according to EN 60947-4-1 with compulsory opening of the main current contacts; optional EMERGENCY STOP versions according to EN 60204-1 are also available.
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Warner Electric has many years of experience in applying sensors and switches in motion control applications. Our broad range of innovative and technologically advanced products offers our customers the exact solution to satisfy their sensing applications needs.
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SAFETY CODED MAGNETIC SENSOR, SR series
Pizzato Elettrica extends its range of safety magnetic sensors by introducing the SR A series which distinguishes itself from the SR B series in the reduced dimensions.
Both series are devices studied to monitor protections and guards that, when linked to a safety module, can create a system up to safety category 4, according to EN 954-1. These products are composed by a magnetic field monitoring sensor, which is connected to the machine structure; and by a coded magnetic actuator, which has to be connected to the mobile guards. The sensor is manufactured to be activated only by the correct coded actuator and not through a common magnet.
Pizzato Elettrica safety sensors distinguish themselves by following main features:
- Insensitivity to dirt as totally sealed, making them especially proper to be used in the food-industry sector.
- Wide actuation zone, characteristic appreciated in the use of inaccurate protections or for protections that can change their mechanical characteristics through the time.
- Centering mark on the housing as a reference for the operating distances
- Possibility of connection in series more sensors also with mechanical switches.
- Actuation from two different directions.
- Available with cable or M8 integrated connector.
- Actuators with operating distance of 5mm or 8 mm.
The new sensor series complete the wide range of products that Pizzato Elettrica can offer in the machine safety field. For further information visit the web-site www.pizzato.com
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NEWS 2009
SAFETY SWITCHES HINGE-SHAPED, PALLADIO LINE
Pizzato Elettrica widens the own range of products making a new series of safety switches hinge-shaped named Palladio, where thanks to an aimed planning and a punctual analysis of the market requirements, safety and style are melted in one single product. The switch is completely integrated in the mechanical hinge, to result practically invisible to an inexpert eye: this guarantees a higher safety.
The assembly without visible screws and the pleasant line, make the switch perfectly integrated also with guards of modern design machinery.
In order to complete the offer it's available also the new variant of the safety switches hinge-shaped, Palladio line, HP AB, whose main features are:
- Version suitable for the direct assembling of glass plates or polycarbonate plates. The wider arm support and the spaced fixing points make installation easier, avoiding the developing of cracks when the holes are too close to the protection rim
- Version with working angle different from 0°
- Metal housing, cable output from bottom, from top or from back
- 4 integrated cable types available
- Versions with M12 connector
- Adjustable operating point, which allows the setting possibility for large guards
- Protection degree IP67
- 9 contact blocks available
- Additional hinge available with purely mechanical functions
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The FailSafe GuardSwitch is designed as a safety interlock to be attached to a machine's guard or door. Unlike a standard reed switch interlock, the circuit has been designed to have an "open" failure mode. If the main reed sticks closed when the guard opens, the in-line fuse will blow, opening the circuit. If the watchdog reed sticks closed when the guard closes, the in-line fuse will blow, opening the circuit. The circuit will draw up to 4.5A to blow the fuse in less than 200ms. Along with being FailSafe, all the 200 series switches have non-coded actuators.
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HE1G grip switches are available with or without a built-in Emergency Stop switch, and were designed for use as "deadman" switches by second operators in robotic cells. The Off-On-Off functionality provides a high level of safety based on human behavioral studies which determine personnel may squeeze OR let go when presented with a panic situation.
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Safety Rope Pull switches
SR
Plastic housing Protection class IP67
Emergency stop switch gear
Integrated emergency stop push button
Quick mounting device for rope installation
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• For hinged guards with a rotation angle range from 0° to 270°
• Switching point freely selectable within a range of 270°
• Simple re-adjustment using integrated fine adjustment system even after switch point set
• 2 forced disconnect safety contacts p and auxiliary contact signalling
• Integrated cable or M12 connector
• Axial or radial direction of connection
• Suitable for systems in control category 4 to EN 954-1 with redundancy
• Protection IP 67
• For an optimum guidance of cables, system design allows right and left end stop
• Elongated hole for attachment to profile or fabricated guard frames
• Interior assembly between profiles by complying with finger protection regulations
• Stainless Steel hinge for full load capability and high-quality plastic houses the switching system.
Flexible installation, flexible connection,
flexible adjustment: the new SHS3!
The technical data sheets for SHS3 can be downloaded from www.bernstein-ag.com under Download products.
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The company Pizzato Elettrica is suggesting to the market many new products in the safety field for the factory automation.
In particular, it has been recently introduced anew and innovative series of strong safety switches with separate actuator and solenoid for guards and entrance machinery monitoring.
These FG series switches have a shape suitable for the installation also on modular profiles (40x40 mm) and distinguish themselves for following features:
- High sturdiness guaranteed by the metal housing and the stainless steel actuator (holding force 2500 N)
- Contact blocks with 4 poles available in 12 different configurations.
- Possibility of operation state signalling through external LED.
- Rotating head in 90° steps, not detachable, with actuator entries both frontal and vertical for the maximum versatility in the installation
- Protection degree IP67
- Versions with rotating lock release device, with emergency release push button or with both devices.
The new switches series integrates the wide range of products that Pizzato Elettrica can offer to its customers, for complete solutions and without compromise to machinery safety problems.
For further information it’s possible to visit the web-site www.pizzato.com or ask for the new general catalogue 2007/2008.
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Door interlock switches are attached to the door of equipment where it is necessary to turn power on or off when the door is closed or opened. This type of control is used in applications where maintenance and testing must be performed inside a cabinet.
Interlock switches are supplied with one 1PDT snap action switch or two 1PDT miniature snap action switches.
The snap action switches are mounted in a frame and a single actuator, which is spring loaded, operates the switch.
When mounted in a door, the closing of the door forces the actuator against the spring thereby closing the switch.
When the door is open, the actuator springs out thereby opening the power circuit. The interlock switch has a service position, which allows service personnel to turn power on even when the cabinet door is open. When the door is closed, the switch automatically resets to the normal closed position.
Ratings:
See selection table.
Operating Features:
Free position - 9.53mm (.375²) max.
Operate position - 5.12mm (.203²) max.
Depressed position - 3.17mm (.125²) max.
Materials and Finishes:
Switch - Contact Eaton Customer Service.
1-800-962-0820
Bracket - Stainless steel.
Actuator - 1 Pole - Molded noryl; 2 Pole - stainless steel.
Spring - Stainless steel.
Insulator - Glass cloth.
Mounting:
Tapped holes are provided for mounting in either of two positions - 2 screw side or front panel mounting.
Mounting hardware is not provided.
Options:
Special circuits.
Solder lug, spade, and PC terminations.
Special actuators.
Approvals:
UL Recognized.
CSA Certified.
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The 100 Series are non-contact interlock position switches with switching voltage models available up to 250 Volts. There are many models to fit a wide variety of applications.
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Safety switches FR series
Pizzato Elettrica switches of the FR series with separate actuator reach the 4th generation. These switches are ideal for gates, protections, carter and all different guards which protect dangerous parts of a machine. The stainless steel actuator is fixed to the mobile section of the protection in order that every time the protection is opened the actuator is pulled out of the switch. A particular mechanism assures the positive opening of the electrical contacts by the pulling out of the actuator. These switches are easy to install and can be applied to any type of protection (hinged, sliding or removable). Furthermore the possibility of operating the switch only with the specific actuator assures that the machine can start again only when the guard is closed.
Pizzato Elettrica switches of the FR series distinguish themselves for the following characteristics:
- Rotating heads: by unscrewing the fixing screw the head can be rotated in 90° steps.
- Not detachable heads: the head “93” is perfectly interchangeable and compatible with the previous head “92” but it has the advantage that it is not detachable from the body, nonetheless it can rotate in 90° steps (Pizzato Elettrica patent). Practically speaking the new head is safer because it’s not possible to damage it during the installation.
The FR series complements the range of products that Pizzato Elettrica can offer to its customers. For further information, please visit the website www.pizzato.com or ask for the relative documentation.
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Hinged machinery guards and covers as well as safety fence doors may be found in every type of industry. The Bernstein safety hinge switch SHS represents the integration of a safety switch in a load-bearing hinge for industrial applications.
The slim profile of the SHS allows the hinge to be readily mounted where space is constrained.
The operating angle is a full 180°, the switching point can be set between 0° and 180°.
The SHS hinge switch opens new doors with the safety contact mounted internally, inaccessible to the user and therefore providing excellent tamper protection.
2 SHS each with a forced disconnect safety contact allow safety category 4 systems to be configured subject to the required risk analysis and safety contact monitoring.
One or more SHS may be used dependent on the category of safety protection required.
Matching hinges without safety contacts are also available, allowing the style to be standardised for general use.
Connectors as well as fixed cable versions with axial and radial (rear) mounting are available.
An IP67 protection rating is sufficient for nearly all machine environments.
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Safety switches are used to detect the opening of machine guard doors, gates or panels and to prevent physical access to dangerous areas of the machine. Safety switches are designed to help deter tampering with either the internal machine controls or guards while in an unsafe condition.
All mechanical safety switches are equipped with positive opening contacts that open any normally closed contacts to assure machine shutdown when an unsafe condition is detected.
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Designed for applications where safety, high performance and continuity of service are essential. Featuring quick-make, quick-break mechanisms.
Features and Benefits
Wide, unobstructed gutter and removable interior make wire pulling quick and easy.
Direct-drive, quick-make, quick-break mechanism provides long life and positive ON/OFF indication .
Bright red handles are easy to see, easy to grip; donut shape on heavy duty and double throw safety switches is ideal for bookstick operation.
Positive 3-point mounting speeds installation, simplifies ganging in close quarters.
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The XA and XW series of Emergency Stop switches include a revolutionary new technology called "safe break action" that will change the way E-Stop switches are designed. This innovative concept provides greater levels of human safety and is the first of its kind in the world.
Conventional E-Stop switches are designed with spring pressure on the Normally Closed (NC) contacts, keeping them in the closed position and allowing the machine to operate. Improper installation or excessive force to the stop button in an emergency may break or dislodge a vital part, causing the spring loaded contact to stay closed. This situation renders the E-Stop incapable of stopping the machine and can lead to catastrophic events, personal injury and possible loss of life.
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SAFETY SWITCH WITH SEPARATE ACTUATOR FW SERIES
These safety switches are ideal to control gates, sliding doors and other guards protecting dangerous parts of machine. The stainless steel actuator is fastened to the moving part of the guard, so it is removed from the switch on every opening of the guard. The switch mechanism guarantees that removing the actuator forces the positive opening of the electrical contacts. Easy to install, these switches can be applied to any kind of protection (with hinge, sliding and removable ones). Besides, the possibility to actuate the switch only with its actuator guarantees that the machine can be restarted only when the guard has been closed.
- Polymer housing, three M20 or M16 knock out conduit entries
- Protection degree IP67
- 6 contact blocks available
- 8 stainless steel actuators available
- 30 N actuator extraction force versions
- Silver contacts gold plated versions
- Cylindrical or slotted fixing holes
- Cover with hinged opening and with only one fixing screw
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Bernstein presents the innovative safety switch SLK as a solution to safety applications in industrial automation. The SLK performs a slim and compact enclosure as well as a mounting acc. per EN 50041 standard. The outstanding feature is the availability of a multi-supply voltage version covering a range from 24 V DC up to 230 V AC. The new actuator head allows both, horizontal and vertical, actuation. Turning the actuator head by 4 x 90° makes it easy to fit the SLK safety switch to various movable guards. The SLK features two independent safety circuits which monitor the position of the movable guard and the condition of the interlocking. Both circuits carry combinations of up to two forced disconnected contacts each and thus achieve compatibility with different safety systems.
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Explosion Proof Switches - Type GLS-Ex - GLS-SS-Ex
Safety Switches with positively operated ATEX Eexd llC T6 certified explosion proof blocks.
Part No Type Pre-wired cables Contacts
142025 GLS-Ex 1 x 3m. 4 core 1NC 1 NO
142028 GLS-Ex 1 x 3m. 4 core 2NC
144025 GLS-SS-Ex 1 x 3m. 4 core 1NC 1 NO
144026 GLS-SS-Ex 1 x 3m. 4 core 2NC
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Emergency pull-wire switches
ZS 80
Metal enclosure
4 contacts
Position indicator and integrated emergency-stop push button
Wire length up to 75 m
Pretensioning force 100 N
Lever for release and position indication
Watertight collar
Wire pull and breakage function
Indicator lamp available
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Heavy duty version of lock. This product has been specifically designed to withstand harsh environments due to special formulation of the metal (an alloy of copper and aluminium) and the increased size of both the body and all the internal elements. Vibration, dust, cement and other destructive elements are handled completely by the S series. Mechanical locking of power supply, valve, control circuit ...Connection with a safety switch permits the locking of the control circuit.
Key code directly integrated into the lock body.
STI provides individual key number management by installation site (please contact us).
Related to an access lock, this version of the device does not need any wiring (key transfer)
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RESET DEVICE W3
Pizzato Elettrica has developed an innovative reset device code W3 to make perfectly simultaneous the actuator and the contact block tripping. The new device is a block inserted between the switch body and the head, and could be rotated independently from this last one. This new device has following advantages:
- The reset device integrate in any standard actuation head
- Contact blocks with snap action are no more necessary because the tripping movement is made by the reset device itself
- Unlike some previous versions, the reset device can be rotated independently from the head for the maximum flexibility during the assembling.
The new switches series integrates the wide range of products that Pizzato Elettrica can offer to its customers.
For further information it’s possible to visit the web-site www.pizzato.com or ask for the general catalogue.
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SCR Series - Safety Relays - Type SCR
The SCR-2 and SCR-3 are all purpose Safety Monitoring Relays which ensure the quick and safe deactivation of the moving parts of a machine in case of danger. Preferred applications include single and dual channel emergency stop circuits or dual channel safety guard monitoring using Tongue switches or Non Contact Switches
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Guard Locking Tongue Switch - Type KLM
Designed to fit to hinged or sliding guards to provide high mechanical holding force and safety interlocking where it is required to protect the operator from moving machinery.
A unique internal mechanism design provides up to 4NC 2NO contacts and provides independent monitoring of the locking mechanism and the tongue position.
2 LED's provide Status of the Solenoid and Door Locked
Can be used with a Safety Relay to provide EN954-1 Cat.4 protection.
Rugged Die Cast housing - IP67 enclosure protection and optional Stainless Steel Head.
Provides Guard Holding up to 3000N (300Kg)
Spring to Lock - Solenoid operate to release
Conduit entry M20 or ½" NPT
Solenoid Voltages available: 24V. ac/dc 110V.ac 230V.ac
Flexible actuator available.
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