Magnetic Style Safety Interlock Switches

Transcription

1 Non-contact safety interlock switches are the best choice for washdown applications; the switch components are sealed and rated NEMA 4X, IEC IP67 Tolerant of dirt buildup, sensing distance, and alignment System consists of three components: - Coded magnet - Reed switch sensor - Controller module Magnet contains several differently-polarized magnets, and sensor contains pole-stable reed contacts to minimize any possibility of defeat Easy installation; can be concealed for added defeat resistance Sensor reed switches provide diverse input to the controller module SECTION CONTENTS! IMPORTANT! Carefully read and understand the application information on page 108 before specifying a safety interlock switch. Magnetic Style Safety Interlock Switches MAGNETIC STYLE SAFETY INTERLOCK SWITCHES 141

2 Controller with Magnet Sensors SI-MAG Series Magnetic Style Interlock Switches Choice of two magnet/sensor pairs; either pair works together with model SI-MAG1C controller Magnet is coded and controller requires simultaneous diverse switching of three reed switches to minimize possibility of defeat Magnetic Style Safety Interlock Switches Magnet Sensor Coded Magnet Controller Sensor Cable SI-MAG1SM SI-MAG1MM SI-MAG1C Switching Distance Min. ON Max OFF 3 mm (0.12 in) 14 mm (0.55 in) SI-MAG2SM SI-MAG2MM 3 m (10 ft) 4 mm (0.16 in) 8 mm (0.32 in) NOTE: To order a magnetic switch pair (sensor and magnet) use model number: SI-MAG1SM/SI-MAG1MM and part number (88x25 mm style), or SI-MAG2SM/SI-MAG2MM and part number (43x26 mm style). 142 MAGNETIC STYLE SAFETY INTERLOCK SWITCHES

3 Supply Voltage and Current Sensor Compatibility Output Configuration Status Indicators Housing Mounting Wire Connections Operating Temperature Dimensions Certifications Magnetic Style Safety Interlock Switches SI-MAG1C Controller Specifications 24V dc ±15% (10% maximum ripple) at less than 100 ma Model SI-MAG1SM or SI-MAG2SM magnet sensor Two series-connected (redundant) normally-open safety relay contacts Contact Material: silver-nickel alloy Contact Ratings: Maximum Voltage: 250V ac/dc Maximum Current: 4A ac or dc (resistive load) Maximum Power: 1700 VA Mechanical Life: 1,000,000 operations Electrical Life: 100,000 operations at full resistive load NOTE: Transient suppression is recommended when switching inductive loads. Install suppressors across load. Never install suppressors across output contacts Green - Power ON Red - Sensor not actuated; output open Polycarbonate; Rated NEMA 1, IEC IP20 Mounts to standard 35 mm DIN rail track. Must be installed inside an enclosure rated NEMA 3, IEC IP54 or better Screw terminals with pressure plates accept wire size: 0.2 mm 2 (26 AWG) min. to 2.5 mm 2 (12 AWG) max. 0 to 55ºC (+32 to 131ºF) See Dimensions on following page Approvals are pending - contact factory Switching Elements Repeat Switching Accuracy Construction SI-MAG1SM or SI-MAG2SM Sensor Specifications Three pole-stable reed switches ±0.1 mm (±0.004 in) Epoxy-encapsulated circuit in polyamide housing Environmental Rating NEMA 4X, IEC IP67 Operating Temperature -5 to +70ºC (+23 to 158ºF) Connections Integral PVC-jacketed 3 m (10 ft) 4-wire cable. Cable O.D. is 5 mm (0.2 in). Wires are 24 AWG (0.25 mm 2 ) MAGNETIC STYLE SAFETY INTERLOCK SWITCHES 143

4 Controller Dimensions 75.0 mm (2.95 in) 22.5 mm (0.89 in) 98.5 mm (3.88 in) Sensor Dimensions SI-MAG1SM SI-MAG2SM 6.5 mm (0.26 in) (0.18 in) (3) 25 mm 10.7 mm (0.42 in) 7.2 mm (0.28 in) 2.5 mm (0.10 in) 3.0 mm (0.12 in) 7 mm (0.3 in) Sensing 26 mm ø8.3 mm (0.33 in) (2) 88 mm (3.5 in) 78 mm (3.1 in) 68 mm (2.7 in) Sensing 22 mm (0.9 in) 29 mm (1.1 in) 43 mm (1.7 in) ø4.3 mm (0.17 in) (2) (0.18 in) Coded Magnet Dimensions SI-MAG1MM SI-MAG2MM 88 mm (3.5 in) 6.5 mm (0.26 in) (0.18 in) (3) 78 mm (3.1 in) 25 mm 68 mm (2.7 in) 10.7 mm (0.42 in) 7.2 mm (0.28 in) 2.5 mm (0.10 in) Magnet 3.0 mm (0.12 in) 7 mm (0.3 in) 22 mm (0.9 in) 29 mm (1.1 in) 43 mm (1.7 in) Magnet 26 mm ø8.3 mm (0.33 in) (2) (0.18 in) ø4.3 mm (0.17 in) (2) 144 MAGNETIC STYLE SAFETY INTERLOCK SWITCHES

5 SI-MAG1C Hookup Coded Magnet Magnet Sensor blue gray brown black SI-MAG1C K1 K V dc - Note: Blue and Gray wires are interchangeable. Brown and Black wires are interchangeable. Note: Note: The contact between terminals 91 and 94 is a non-safety auxiliary monitor contact which is open when K1 and K2 are both closed The contact between terminals 71 and 76 is the safety rated output. The user must refer to the SI-MAG1C manual for recommended wiring. Connect terminal 60 to 61 with a jumper wire. MAGNETIC STYLE SAFETY INTERLOCK SWITCHES 145

6 Safety Interlock Switches NOTES: 146 SAFETY INTERLOCK SWITCHES