Components and parts list 4 5. Data sheet sensor SJ 3,5-SN 5 6. Cable gland 6.1 Cable gland nickel-plated 6.2 Cable gland stainless steel
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1 - 1 - Documentation about Ex i - 45 C 8 V DC limit switch boxes with Pepperl+Fuchs sensors for pneumatic rotary- and linear actuators acc. to guidline 2014/34/EU, IBExU 04 ATEX 1211 II 2G Ex ia/ib IIC/IIB T6 Gb II 2D Ex ia/ib IIlC T 80 C Db Topic: Page: 1. Objectives and practical use 2 2. Technical specification 3 3. Mechanical mounting / Electrical connection 3.1 Mechanical mounting 3.2 Electrical connection Components and parts list 4 5. Data sheet sensor SJ 3,5-SN 5 6. Cable gland 6.1 Cable gland nickel-plated 6.2 Cable gland stainless steel Applicable standards 10
2 Objectives and practical use The positions of industrial valves represent an important piece of information for the course of action of a production. These valves are e.g. actuated with pneumatic rotary- and linear actuators at which the end position of the valve like open or closed is reported back to a control system. This is done via a mounted limit switch boxes which are placed on / at the actuator. Use of the above mentioned limit switch boxes can be found in endangered explosive areas as specially for oel and gas industry in extremely cold areas suchlike Siberia - Russia. Equipment group II, category 2G, zones 1, 2 or 2D, zones 21, 22, see image 1-3. Image 1-3: aluminium low temperature limit switch boxes, size.: 125x80x57mm, for rotary- and linear actuators with 2x Pepperl+Fuchs sensors SJ 3,5-SN, temperature range: - 45 C Ta +70 C
3 - 3 - Technical specification Table 1: Technical specifications as well as conditions of use for the low temperature limit switch boxes equipment group II, category 2G, zone 1, 2 or 2D, zone 21, 22 Term / Identifier: Technical specifications: Potential recyclables and Aluminium grey, 125x80x57mm measurements Interface: Box to bracket 4xM6-winding at the bottom hole circle 50mm, F05-slot Interface: Box to bracket for - acc. to VDI/VDE 3845, steam hight 20, 30 and rotary- or linear actuator 50mm, hole spacing 80x30mm and 130x30mm - mounting set f. linear actuators acc. to IEC 534 Surrounding temperature array - 45 C T a + 70 C Protection class of the housings IP 65 Ignition protection class II 2G Ex ia/ib IIC/IIB T6 Gb II 2D Ex ia/ib IIIC T 80 C Db Temperature class T6 Nominal voltage Nominal current Power U i = 16 V I i = 25 ma P i = 34 mw Cable gland M20x1,5mm, 13-9,0mm Joint clamp max. 2,5mm² Weight (without bracket) 0,5kg Display and switching range 0-90, or adjustable Pepperl+Fuchs sensor SJ 3,5-SN, C I = 50 nf und L i = 250µH, more details see page 5 3. Mechanical mounting / Electrical connection 3.1 Mechanical mounting: The low temperature limit switch boxes with the mounted brackets or the mounted aluminium plate (via F05-slot) and the mounting set are placed on / at the rotary- or linear actuator and screwed together. 3.2 Electrical connection: The low temperature limit switch boxes are electrically connected to the 4-pole clamp clamp within the housing through the bush and cable clands tightening torque, see operating instructions page 6-9. Data like cable thickness and cable cross section are shown in table 1. You also have to take the attached wiring diagram into consideration which can always be found on the left long surface within the housing or directly on the pcb-see image 4. Metal parts have to be grounded or the metal housing has to be connected to the equipotential bonding.
4 - 4 - Image 4: wiring diagram about connection the 2x Pepperl+Fuchs sensors SJ 3,5-SN at the 4-pole clamp 4. Components and parts list Table 2: Components and parts list of the low temperature limit switch boxes equipment group II, category 2G, zone 1, 2 or 2D, zone 21, 22 Term/Identifier Article-No. Material Comments Aluminium empty housing: Consisting of a lower part with F05-slot, shaft bushing 12mm, tap hole M20x1,5 mm, closed cover as well as 4 pieces of cover screws SB-AL-L-T AL-Si x80x57mm, grey Cable gland nickel-plated, Sealing insert Cable gland stainless steel, Sealing insert SB-KL-T MS LSR SB-KL-VA-T LSR M20x1,5mm, clamping range for cables 13-9,0mm Pflitsch-type: U28.UNI Ex e -60 C-+180 C M20x1,5mm, clamping range for cables 13-9,0mm Pflitsch-type: U28.UNI Ex e -60 C-+180 C 2 pieces clamp SB-V Plastic 2,5 mm 2, blue, Fa. Bartec Shaft for trench shaped sensors SB-W-schl x64mm, Z.-No. 002 O-Ring for shaft SB-O-T Silikon 9x1,5mm Washer for shaft, 2 pieces SB-U POM 18/ 12x1,2mm Lock washer for shaft, 2 pieces SB-S V2A DIN Cam switches for shaft, 2 pieces SB-S-s AL Z.-No. 003 Cable binder, 2 pieces SB-K Neylon 99x2,5mm Wiring diagram and sensor label SB-Sch-S PVC 30x32mm and 2 pieces 8x4mm aluminium plate grey for mounting set SB-AB Al 135x80x10mm,Z.-Nr.: 061 acc. to Namur IEC 534 Sensors with attachment screws and nut: SJ 3,5-SN Housing PBT 10x15x19mm,
5 Data sheet sensor SJ 3,5-SN (Extract from Pepperl+Fuchs data sheet page 1)
6 Cable gland 6.1 Cable gland nickel-plated
7 - 7 -
8 Cable gland stainless steel
9 - 9 -
10 Applicable standards EN : 2012+A11:2013 Explosive atmospheres - Part 0: Equipment - General requirements EN : 2012 Explosive atmospheres - Part 11: Equipment protection by intrinsic safety i
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