Safety along the complete line: 3SE7 cable-operated switches Answers for industry.
Everything well under control. 3SE7 cable-operated switches With cable-operated switches from our 3SE7 product range, you are always well equipped whether a paper jam in a printing machine, an overloaded conveyor belt, or labeling errors at a packaging machine when parts of a plant or system must be iediately stopped due to a hazard. This is because our line of rugged switches which can be flexibly used almost anywhere, permit an iediate response in virtually any situation. The EMERGENCY STOP / EMERGENCY SWITCHING-OFF function can be triggered from every point along the range to be monitored even over long distances. The range for almost any application: 3SE7 an overview Whether monitoring potentially hazardous areas or used as EMERGENCY STOP devices our complete line of devices can be precisely set up in line with individual requirements. 3SE7 has even more to offer. For example, devices with bi-directional actuation can easily monitor distances up to 2 x 75 m such as belt skewing monitor devices that are used to monitor conveyor systems. Cable-operated switches with integrated AS-Interface can be directly connected to the AS-interface line with safety-relevant counications. LED technology can be optionally used or cable-operated switches with integrated EMERGENCY STOP pushbuttons. Equipped for virtually every situation: Installation and application All the devices have an IP67 degree of protection, metal enclosure, and tough steel cables cable-operated switches are designed and equipped for almost any application. With or without latching, applications include signaling devices as complete EMERGENCY STOP systems according to EN 18; or, with integrated EMERGENCY STOP pushbutton. Always in view: Signaling display 3SE7 devices always keep you informed about the operating state of your plant and machines whether directly at the device or from a distance of up to 75 m. Further, versions with LED indication distinguish themselves thanks to their costeffectiveness practically over the complete life cycle of the device. 2
Advantages p Control functions and EMERGENCY STOP p Version with integrated EMERGENCY STOP pushbutton p Increased safety and security over long distances up to lengths of 2 x 75 m p Complete systems for every requirement and range to be monitored p Simple release p Virtually fail-safe applications using Safety Integrated p Operating display directly at the switch p Signal display for long distances using innovative LED systems: Visible over 50 m with a high lifetime of approx. 50,000 hours p Pull switch with latching according to EN 18 full EMERGENCY STOP function with positively opening contacts p Fast and simple installation using a standard range of installation accessories Reliable in virtually every situation: Positive opening contacts (Direct Opening Action) and position display The NC contacts of all 3SE7 cableoperated switches are positive opening in order to ensure maximum safety and reliable switching either when pulling the cable or when the cable breaks. If the cable is pulled or the cable breaks, the appropriate contacts open and the circuit is interrupted. 3SE7 devices can be pre-tensioned with an accuracy of one millimeter during installation using turnbuckles. Cable-operated switches also have a position display for easier and better adjustment. Always within grasp: The principle of the cable-operated switch How can a cable-operated switch be used to monitor machines and plants over large distances and areas that cannot be guarded using standard safety covers? Can a single switch guarantee reliable protection up to 0 m? Definitely! The principle of a cable-operated switch is extremely simple, but smart. A cable runs along sections that are safety relevant and is connected to a cable-operated switch. The cable is always close at hand. If a fault occurs, the cable can be grabbed anywhere along the cable run and the plant or machine is iediately stopped. This virtually guarantees seamless safety along the complete cable run. 3
Make the right decision. Selection criteria and special issues There are cable-operated switches and then there are Cable-Operated Switches! When selecting the optimum device, as well as when installing it, not only must the requirements of the application be carefully taken into consideration but also the specific issues and characteristics of the range to be monitored. Listed below are some of the most important selection criteria so that you can safely make the right selection. Selection criteria for cable-operated switches/belt skewing monitor devices 3SE7 Cable lengths Switching contacts Release Optical signal Integrated EMERGENCY STOP Adjustment window (position of the pre-tensioned cable is displayed) Accessories Basic equipment m, 25 m, 50 m, 75 m, 2 x 75 m Various numbers of NO + NC contacts (depending on the Order No.) with without press to release key-operated release rotate to release (depending on the Order No.) none with red LED, 2 V DC Yes/no Yes/no 2 V DC / 115 V AC; red / clear LED Steel cable, cable clamps, cable eye, eye bolt
Installation examples Cable lengths up to 25 m Cable ø 3SE7 9 Cable-operated switch 3SE7 120 3SE7 150 Turnbuckle M 6 x 60 3SE7 950-1AB M 8 3SE7 920-1AB M 8 3SE7 920-1AB Cable lengths up to 50 m Cable ø 3SE7 9 Cable-operated switch 3SE7 10 Turnbuckle M 6 x 1 3SE7 950-1AD Spring 35 N 3SE7 931-1AD M 3SE7 920- Cable pulley rotatable 3SE7 921- Two-sided actuation for cable lengths up to 2 x 75 m Cable ø 3SE7 9 Cable ø 3SE7 9 M 3SE7 920- Tension spring (up to 2 x 50 m) 3SE7 931-1AD Tension spring (up to 2 x 75 m) 3SE7 931-1AE Cable clamp 3SE7 91- Cable pulleys rotatable 3SE7 921- Cable clamp 3SE7 91- Turnbuckle M 6 x 1 3SE7 950-1AD Cable Cable clamp clamp 3SE7 91-3SE7 91- Cable pulleys rotatable 3SE7 921- Cable-operated switch 3SE7 160 Cable clamp 3SE7 91- Cable pulleys rotatable 3SE7 921- Cable clamp 3SE7 91- Tension spring (up to 2 x 50 m) 3SE7 931-1AD Tension spring (up to 2 x 75 m) 3SE7 931-1AE M 3SE7 920- For cable lengths 25 m and longer, a tensioning spring must be used. The appropriate equalization springs must be used to compensate for higher temperature fluctuations. In order to ensure a solid connection, the PVC sheath must be removed from the steel cable at the clamping position. Cable supports must be used at the recoended intervals (refer to technical data). 5
cable-operated switches. Selection and ordering data Version Cable length in m Contacts Order No. cable-operated switches Metal enclosure (molded plastic cover) without latching, only cable tension monitoring 1 NO + 1 NC 3SE7 120-2DD01 with latching and push to release 2 NC 3SE7 120-1BF00 Metal enclosure (molded plastic cover) with dust protection and adjustment window 25 without latching 1 NO + 1 NC 3SE7 150-2DD00 with latching and push to release 1 NO + 1 NC 3SE7 150-1BD00 2 NC 3SE7 150-1BF00 with latching and key-operated release 1 NO + 1 NC 3SE7 150-1CD00 Metal enclosure (molded plastic cover) 25 with dust protection and adjustment window with red LED, 2 V DC without latching 1 NO + 1 NC 3SE7 150-2DD0 with latching and push to release 1 NO + 1 NC 3SE7 150-1BD0 Metal enclosure (molded plastic cover) 50 with dust protection with latching and push to release 1 NO + 1 NC 3SE7 10-1BD00 2 NC 3SE7 10-1BF00 in addition with red LED, 2 V DC 1 NO + 1 NC 3SE7 10-1BD0 with latching and key-operated release 1 NO + 1 NC 3SE7 10-1CD00 Metal enclosure 2 x 75 with 2-sided actuation with latching and push to release 2 NO + 2 NC 3SE7 160-1AE00 in addition with red LED, 2 V DC 2 NO + 2 NC 3SE7 160-1AE0 belt skewing monitor Metal enclosure with latching and push to release 2 NO + 2 NC 3SE7 3-1AE00 in addition with red LED, 2 V DC 2 NO + 2 NC 3SE7 3-1AE0 cable-operated switch with integrated EMERGENCY STOP Metal enclosure with dust protection with latching and rotate-to-unlatch mechanism 75 1 NO + 3 NC 3SE7 11-1EG Positively opening according to IEC 6097-5-1, Attachment K 6
Accessories Steel cable Order No. with red plastic sheath diameter m 3SE7 9-3AA 15 m 3SE7 9-3AB 20 m 3SE7 9-3AC 50 m 3SE7 9-3AH galvanized, white, diameter Always the optimum at hand: Installation and accessories cable-operated switches can be simply and quickly installed in a very wide range of positions. Practical accessories that are perfectly coordinated with one another accessories such as cable clamps, turnbuckle or tension springs additionally ease mounting., diameter 3SE7 93- duplex, diameter 3SE7 9- single, 5 diameter 3SE7 92-1AA Springs to maintain the tension 13 N 3SE7 931-1AB 35 N (to 2 x 50 m) 3SE7 931-1AD > 35 N (to 2 x 75 m) 3SE7 931-1AE Cable sheave to route the cable Can be rotated, diameter 3SE7 921- Retention for cable sheave 3SE7 921-1AA Cable eyes to route the cable and for improved force transfer at the attachment points, diameter to attach the cable incl. M 8 nut 3SE7 920-1AB incl. M nut 3SE7 920- Turnbuckle to precisely adjust the tension M 6 x 60 3SE7 950-1AB M 6 x 1 3SE7 950-1AD LED lamp Red, 2 V DC, 25 diameter for equipment connection M 20 x 1,5 3SX3 235 7
Technical data Switching distances and circuit diagrams 3SE7 120-2DD01 3SE7 150-..D0. 3SE7 120-1BF00, 3SE7 150-1BF00 13-1 NSC0_006 5 13-1 Cable tension 5 13-1 Cable tension 3 5,5 3 5 3 3 5 0 0 Cable break 0 Cable break 13 1 13 1 13 1 21 22 21 22 21 22 NSC0_0065 NSCO0293 NSC 00296 3SE7 10-1.D0. 3SE7 10-1.F00 3SE7 11-1EG 3SE7 160-1AE.., 3SE7 3-1AE.. 20 13-1 Cable tension 20 11-12 Cable tension 8 11-12 31-32 3- Cable tension 13-1 1-2 33-3 5 NSC O0292a Cable break NSC O0627 0 0 20 Cable break NSCO_0106 8 Cable break 5 20 13 1 21 22 NSCO0293 11 12 21 22 NSC O0629 11 21 31 3 12 22 32 NSCO_0107 13 1 33 3 21 22 1 2 NSCO0296 8
Pre-tension and actuation forces Siemens AG 2008 5.00 m (.00 m for 3SE7 160) Cable tension EMER- GENCY SWITCHING- OFF switch Pre-tension force in N Actuation distance S in cm Actuation force F in N 3SE7 120-1BF00 55 11 6 3SE7 150 200 11 25 25 3SE7 10 295 390 13 38 60 50 3SE7 11 0 20 22 28 3 75 3SE7 160-32 0 5 85 2 x 75 Max. cable length in m The specified values refer to installing switches in an ambient temperature of 20 C. A length extension of the cable due to stretching and deformation of the cable eye is not taken into account. The specified actuation forces are only nominal values as the spring forces are subject to a tolerance. The 3SE7 cable-operated switches meet the requirements of the harmonized European standard EN 18 pertaining to EMERGENCY STOP equipment. The recoended use of a tension spring meets the requirements of the European standard draft EN 615 pertaining to continuous conveyor systems. Technical data Type 3SE7 120 3SE7 150 3SE7 10 3SE7 11 3SE7 160 3SE7 3 Regulations IEC 6097-5-1, EN 6097-5-1 (VDE 0660 Part 200), IEC 6020-1, EN 6020-1 (VDE 0113, Part 1), EN 18 (ISO 13850) Certification UL/CSA Electrical design Contacts electrically insulated from each another Electrical load 00 V AC, 6 A 250 V AC, 2 A 00 V AC, 6 A at AC-15: minimal 2 V AC/DC, ma Short-circuit protection 6 A (slow acting) Mechanical > 1 million switching operations lifetime Contact material Fine silver Actuation By pulling the cable or when the cable breaks Cable length, max. m 25 m 50 m 75 m 2 x 75 m Distance between cable support points, max. 2.5 m 3 m 5 m 5 m 5 m Enclosure GD-Al alloy, painted, deep black RAL 9005 Cover Shockproof thermoplastic Degree of protection IP65 IP65 IP65 IP67 IP65 IP65 acc. to EN 60529 Ambient temperature 25 C... +70 C Retention Designed for M5 Retention distance 30 and 0 Cable entry 2 x (M 20 x 1.5) 1 x (M 16 x 1.5) 3 x (M 20 x 1.5) 2 x (M 25 x 1.5) Connection type Screw connection M3, 5, self-lifting clamp 9
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