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•Conveyor Safety Stop Switch
•A safe and reliable means of stopping conveyors
•Double ended pull mechanism as standard
•Slack or taut wire operation
•Designed for operation in arduous environments e.g. quarries, open cast mines
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Pizzato Elettrica has designed and patented new accessories to install the rope of safety switches faster and to obtain an aesthetically more pleasant system.
The new accessories, in comparison with the traditional fixing system through carpentry material, have the following advantages:
%u2022 The installation is faster because only one screw is used for the fastening of every rope extremity, and the parts are prepared to ease the installation. Some practical tests have pointed out that the installation time is halved, reason for which it is named FAST.
%u2022 The system is aesthetically pleasant, because thread parts (which sometimes tear operators%u2019 dresses) and the rope extremities, usually fixed by heat-shrinkable sheath or adhesive tape, have been hidden.
%u2022 The red plastic covers of the fixing parts have been developed also for the function of controlling the rope clamping. If the rope fastening screw is not fixed tightly enough, the cover cannot pass.
%u2022 The rope is fixed without folds, thus reducing the rope stabilisation time and the possible re-calibrations of the rope tightening.
Furthermore two sturdy pulleys has been introduced in applications where the rope is very long in order to support the rope length or to bend its route. They are designed to avoid any deformation and to allow the rope to remain in its seat also when it is energetically activated.
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Even redundant, secure emergency-stop chains are ineffective unless the contact block is accurately connected with the emergency-stop button. The patented safety contact blocks of Schlegel Elektrokontakt are the response to this danger that may occur e.g. due to a negligent assembly or a mechanical damage.
In such an emergency they ensure that the emergency function is activated and that the installation is immediately shutdown. It can only be started up again after trouble-shooting.
The contact blocks are available with screw connections or Faston terminals and do have positive opening contacts acc. to IEC60947-5-1. They can be supplied with one or two channels and also, once combined with the relative E-stop button, in a foolproof version acc. to EN60947-5-5 and EN418. The high-quality contact elements allow reliable switching even of low currents (5mA at 24V or less). They are available as conventional contact blocks as well as for the AS-Interface-Bus (Safety@Work).
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Honeywell MICRO SWITCH™ Safety Switches
Full-Scale Offering. Solid, Robust Industry Knowledge.
Whether you're an end-user or OEM, you face an ongoing challenge: to keep your machines and equipment operating safely and productively, while meeting all global workplace safety standards. When you need comprehensive solutions for machine safeguarding, Honeywell helps you meet the challenge with one of the industry's broadest switch portfolios.
Honeywell offers you choices to ensure that your needs are met in the safety arena. Designed with OEMs in mind, we offer safety switches in every size.
-Miniature switches – less than 50 mm [2 in] square – for smaller doors and openings
-Trapped key and solenoid key switches for large, heavy doors
-Cable pull switches for conveyor or perimeter guarding.
-Non-contacting switches for small door position detection
And, all our products are backed by the Honeywell brand, service, and global support.
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Command devices are of great importance for the man-machine interface in the area of industrial applications. For example, they are mounted in switch-boards, control panels, two-hand control panels, in lift manufacture and on materials-handling plants, including conveyors. Manual actuation of the devices starts operating sequences and functional processes or serves to bring these to an end.
Emergency Stop command devices are generally connected in the safety circuit of a machine or plant and are of particular importance in terms of the control system for these. In case of a fault or accident, the secure function and quick accessibllity of Emergency Stop command devices can be crucial for saving life, limiting the degree of injury to personnel or the extent of damage to a machine.
New requirements are placed on the mode of operation of these command devices by the new harmonised European Standard EN 418 regarding functional aspects and recommendations for the arrangement of Emergency Stop equipment.
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SOLENOID CONTROLLED INTERLOCK SWITCH with 1 to 6 key slots
Electromechanical rotating latch that permits the interlocking of the power circuit up to 22kW and 380V
Takes into account one supplementary condition (zero speed, timer, etc…)
It frees between 1 and 6 keys by voltage emission
The position of the contacts is associated with the motion and position of the main key
Key Logic:
• 1 key slot: Key liberation by voltage emission.
• Association (+) of keys by voltage emission
• Interchanging ( / ) of keys:
1 key free and various keys locked, by voltage emission
Positive Safety: Electromagnet retracts mechanically when re-
locking.
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Safety switches ensure the obligatory isolation of electrical power under condition of equipment cleaning, maintenance and repair. Other methods of isolation, e.g. rmoval of fuses or disconnection of motors, which require qualified electricians are unnecessary.
3 and 6 pole switches 12 A / 16 A, 25 A, 40 A, 63 A / 80 A, 125 A / 160 A, 250 A, 315 A, 400 A, 500 A
Explosion protection to CENELEC, IEC
For use in Zone 1 and Zone 2, Zone 21 and Zone 22
Motor switching capacity AC 3 and AC 23 acc. to IEC 60 947-3, EN 60 947, DIN VDE 0660 part 107
With or without up stream contact
Definite opening for main contacts
Isolating switches acc. to DIN VDE 0660
Can be padlocked in "OFF" position
Non-reversible switch with defined switch position
High level of corrosion resistance in external components
Marked with signal orange label "Safety Switch"
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The Idemag CPR Non Contact Interlock Switch range offers a compact slimline fitting and provides environmental protection up to 80°C. and is suitable for high pressure hosing (IP66/67).
The housing is finished and sealed with a fitted back plate for extra mechanical and environmental durability.
In addition to the high specification enclosure the switch offers a wide 14mm sensing distance, a high tolerance to misalignment and can be actuated rom either the side or front switch face.
They provide up to 2NC 1NO circuits and will connect to most popular Safety Monitoring relays to provide up to Cat. 4 EN 954-1.
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The Idemag WPR Non Contact Interlock Switch range offers a robust wide fitting and provides environmental protection up to 80C. They are suitable for high pressure hosing (IP66/67) and are resistant to many organic and non organic chemicals.
The housing is finished and sealed with a fitted back plate for extra mechanical and environmental durability.In addition to the high specification enclosure the switch offers a wide 14mm sensing distance, and a high tolerance to guard misalignment.They are designed to fit to medium to large guards.
They offer 2NC high power (up to 2A.) circuits and will connect to most popular Safety Monitoring relays to provide up to Cat. 4 EN 954-1. An auxiliary signalling contact is available. The high power components and de-rating with an internal fuse mean they may be suitable for use in lower risk applications (subject to a risk assessment for the application).
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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.
- Protection degree IP67 and IP69K.
- 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.
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NEWS 2009
SAFETY SWITCHES HINGE-SHAPED, HP SERIES
Pizzato Elettrica widens the own range of products making a new series of safety switches hinge-shaped named HP, 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 HP AB series, 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 and IP69K
- 9 contact blocks available
- Additional hinge available with purely mechanical functions
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Non-contact safety switches provide considerable advantages where tough ambient conditions apply. They are also especially suitable for use on imprecisely controlled safety equipment. Non-contact EUCHNER safety switches operate on the basis of clearly coded actuators. Manipulation of an actuator is thus impossible. Supply voltage and data transfer to the coded actuator are realized by means of a non-contact inductive read head. A monitoring output is additionally available for the safety outputs. Through the redundant design of the evaluating device, the safety switch can be used for the highest safety requirements up to control category 4 according to EN 954-1.
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The Hygiecode SMC Non Contact Interlock Switch range offers a compact yet robust 22mm fitting and provides environmental protection up to 105°C. and is suitable for high pressure hosing. The housing is finished and sealed with a stainless steel back plate for extra mechanical and environmental durability.
In addition to the high enclosure specification the switch offers a wide 14mm sensing distance, a high tolerance to misalignment, LED indication of switch status, 'anti-tamper' coded magnetic actuation, and 2NC 1NO switching circuits to cope with modern industrial control requirements.
They will connect to most popular Safety Monitoring relays to provide up to Cat. 4 EN 954-1 and SIL 3.
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Eden is a new non-contact sensor using dynamic signal transmission. The sensor operates to category 4 according to EN 954-1 and has an extended sensing distance. Several Eden sensors and light beams can be connected in the same safety circuit and dynamically monitored by the Vital safety module.
We also offer several other types of interlocking devices. The Emergency Stop Grab Wire safety switch JSNY10 provides 'emergency shutdown' up to 25 metres.
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Z/T and E.95 range position switches are suitable for sliding and hinged safety guards, which need to be closed to ensure the necessary operational security.
In combination with AES and/or AZR range safety monitoring modules all position switches class 1 shown in this chapter achieve Control Category 3 or 4 to EN 954-1.
Further applications for positions switches class 1 are most varied positioning duties. The variety of requirements to be found in practice can be met in detail by means of a wide range of actuating elements.
Design and mode of operation:
On the position switches class 1 the guarding device and the positive break NC contact are positively linked.
Schmersal make both standard and AS-i Safety at Work position switches with safety function.
Click here to see the AS-i models
Or for the standard models click below
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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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GLM Rope Switch
Idem Guardian Line Safety Rope Switches are designed to be mounted on machines and sections of conveyors which cannot be protected by guards. In contrast to traditional mushroom-head emergency stop buttons, Safety Rope Switches can initiate an emergency command from any point along the installed rope length and provide robust Emergency Stop Rope Pull protection for exposed conveyors or machines.
On pulling the rope, the safety contacts are positively opened and the auxiliary contact are closed. The switches are mechanically latched and can then only be returned to the operational condition by pressing the blue reset button (as required by EN418). A bi-colour LED indicator is available to enable switch status to be viewed from a distance.
Satisfies EN 418 and IEC 947-5-1 IEC 947-5-5
Guardian Line GLM features:
Die Cast Yellow Painted enclosure
IP 67 for hosedown.
Contact blocks (4 pole) 3NC + 1NO or 4NC or 2NC + 2NO.
3 conduit entries M20 or ½" NPT
Protect hazards up to 50 m. long.
Reset by push button.
Rope tension indicators.
Optional Signalling lamp available Green / Flashing Red 24V dc.
Rope pulled and breakage detection.
E-Stop Mushroom type button fitted.
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The EUCHNER safety engineering offers you a wide range of safety switches and accessories. Safety switches are safety devices which are used to monitor movable safety guards. The safety switches differ from the following categories:
- Safety Switches category 1 or 2
- Housing (anodized die-cast light alloy or glass fibre reinforced plastic housing)
- Safety switches with or without interlock
- Switches in which the magnetic tumblers are monitored or switches without monitoring of the tumblers
- Mechanical, non-contact or electronic safety switches
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IDEM SAFETY SWITCHES is a British company with over 26 years experience of solving machine safety interlocking problems.
Following the company’s tradition for pushing design boundaries and creating innovative products, IDEM has produced the complete range of Safety Interlock Switches:
Tongue Interlock Switches (Kobra range)
Safety Rope Pull Series (Guardian Line range)
Coded Non Contact Switches (Idecode / Hygiecode range)
Safety Relays ( SCR range)
Safety Limit Switches.
Product highlights – Stainless Steel 316 Interlock switches to cope with the rigorous demands of the food, beverage and pharmaceutical environments, and ATEX Explosion Proof switches.
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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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LOCKABLE SWITCH in a box with 1 to 3 key slots from 5 to 215 KW
Mechanical or electromechanical blockage of power circuits in the open position.
It has one blocking or interlocking latch that can release from 1 to 3 keys.
Protection: IP 55
Options: ADF; 4 poles - 6 poles; Timer; Blockage in the open position; Advance action auxiliary contacts upon request.
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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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Safety Switch STA
The robust metal safety switch STA is dimension-compatible with the proven EUCHNER safety switches TP and STP in plastic housings. Due to its die-cast aluminum housing and its high degree of protection IP 67, the switch can withstand even extreme ambient conditions. Like the switches TP and STP, the safety switch STA also offers a guard locking and a guard locking monitoring. A great variety of switching elements is available. The contacts can switch a minimum current of 1 mA. Therefore the safety switch STA is suitable for use in safe control systems.
Features
Robust design
3 cable entries
High degree of protection IP 67
LED upon request
AS-Interface version upon request
BG approval (pending)
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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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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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The Hygiemag WMR Magnetic Non Contact Interlock Switches offer a wide industry robust fitting and provides environmental protection up to 105°C.
The housings are fully Stainless Steel 316 with mirror polished finish and they are designed to cope with the rigours of CIP and SIP cleaning in food processing industries. (IP69K High Pressure Chemical Cleaning).
In addition to the high specification enclosure the switch offers a wide 14mm sensing distance, a high tolerance to misalignment, provides up to 2NC 1NO power circuits (up to 2A.) and will connect to most popular Safety Monitoring relays to provide up to Cat. 4 EN 954-1.
Features:
Fully Stainless Steel 316 housings
Mirror polished finish
High Mechanical Life
IP69K enclosure protection - High Temperature Cleaning
Wide robust fitting - 30mm wide
M12 Flying Lead connector versions
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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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