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heavy-duty safety limit switch d4b- n positive action limit switches with snap and slow action contacts for critical switching applications all feature direct drive contacts to insure contact opening of double break contacts even with contact welding due to overload currents enclosure rating meets ip67 and nema 3, 4, 4x, 6p and 13 modular construction with four position turret head three-conduit switch body available for easy wiring approved standards: agency standard file no. ge cy s a da d snap-action slow-action tv rheinland en60947-5-1 with r9850211 without r9151372 r9151643 bia en60947-5-1 gs-et-15 9202158 and 9309655 9202158 ul ul508 e76675 csa csa c22.1 no.14 lr45746 ordering information switches description part number actuator conduit type 1nc +1no (snap action) 1nc +1no (slow action) 2nc (slow action) side rotary roller lever, nylon, 17.5 mm (0.69 in) dia. 1/2-14npt (1 conduit) d4b-3111n d4b-3511n d4b-3a11n () 1/2-14npt (3 conduits) d4b-7111n d4b-7511n d4b-7a11n adjustable roller lever, rubber, 50.0 mm (1.97 in) dia. * 1/2-14npt (1 conduit) d4b-3113n d4b-3513n d4b-3a13n rubber, 50.0 mm (1.97 in) dia. 1/2-14npt (3 conduits) d4b-7113n d4b-7513n d4b-7a13n adjustable roller lever, nylon, 17.5 mm (0.69 in) dia. * 1/2-14npt (1 conduit) d4b-3116n d4b-3516n d4b-3a16n 17.5 mm (0.69 in) dia. 1/2-14npt (3 conduits) d4b-7116n D4B-7516N d4b-7a16n (this table continues on the next page.)
d4b- n d4b- n 2 ordering information table continued from previous page description part number actuator conduit type 1nc +1no (snap action) 1nc +1no (slow action) 2nc (slow action) adjustable rod lever, 150 mm (5.91 in) l * 1/2-14npt (1 conduit) d4b-3117n d4b-3517n d4b-3a17n 150 mm (5.91 in) l 1/2-14npt (3 conduits) d4b-7117n d4b-7517n d4b-7a17n top plunger plain 1/2-14npt (1 conduit) d4b-3170n d4b-3570n d4b-3a70n 1/2-14npt (3 conduits) d4b-7170n d4b-7570n d4b-7a70n roller 1/2-14npt (1 conduit) d4b-3171n d4b-3571n d4b-3a71n 1/2-14npt (3 conduits) d4b-7171n d4b-7571n d4b-7a71n wobble stick ** coil spring, 6.5 mm (0.26 in) dia. x 114.4 mm (4.51 in) l 1/2-14npt (1 conduit) d4b-3181n --- d4b-3a81n 1/2-14npt (3 conduits) d4b-7181n --- d4b-7a81n plastic rod, 6.5 mm (0.26 in) dia. x 114.4 mm (4.51 in) l 1/2-14npt (1 conduit) d4b-3187n --- d4b-3a87n x 114 . 4 mm (4 . 51 in) l 1/2-14npt (3 conduits) d4b-7187n --- d4b-7a87n note: marking indicates the contacts which have positive opening mechanism approced by t v rheinland. * the adjustable roller lever models are approved by the tv (en standard) as positive opening, but they do not conform to the bia (gs-et-15 standard) and suva. ** the models are not approved by tv, bia and suva as positive opening. model number legend d4b - n 12 3 1. conduit 1: pg13.5 (standard) 2: g1/2 (pf1/2) (standard) 3: 1/2-14npt (standard) 5: pg13.5 (3-conduit) 6: g1/2 (pf1/2) (3-conduit) 7: 1/2-14npt (3-conduit) 2. built-in switch 1: 1nc/1no (snap-action) a: 2nc (slow-action) 5: 1nc/1no (slow-action) 3. actuator 11: roller lever (standard) 16: adjustable roller lever 17: adjustable rod lever 70: top plunger 71: top roller lever 81: coil spring 87: plastic rod 00: switch box (without head)
d4b- n d4b- n 3 replacement parts building a part number switch body =+ operating head lever + d4b-3100n ex. d4b-3111n = + d4b-0010n d4b-0001n + the d4b-n family of switches features plug-in construction with interchangeable parts for sim- plified long-term maintenance. the illustration at right shows the parts that make up a whole switch, as well as how to read a part number as the sum of its parts. note: the design of d4b-n switches does not share compatible parts with omron's d4b-5000 series. switch bodies standard en50041 type 3-conduit type 1/2-14npt 1/2-14npt 1nc/1no (snap-action) d4b-3100n d4b-7100n 1nc/1no (slow-action) d4b-3500n d4b-7500n 2nc (slow-action) d4b-3a00n d4b-7a00n operating heads actuator description part number side rotary standard d4b-0010n top plunger plain d4b-0070n roller, 12.7 mm (0.5 in) dia. stainless steel roller d4b-0071n wobble stick coil spring, 6.5 mm (0.26 in) dia. x 114.4 mm (4.51 in) l d4b-0081n plastic rod, 6.5 mm (0.26 in) dia. x 114.4 mm (4.51 in) l d4b-0087n levers (for side rotary switches) description part number roller lever 17.5 mm (0.69 in) dia. nylon roller d4b-0001n 50 mm (1.97 in) dia. rubber roller d4b-0003n adjustable lever roller, 19 mm (0.75 in) dia. nylon roller d4b-0006n j rod, 145 min/max. (5.71 in) d4b-0007n
d4b- n d4b- n 4 specifications ratings 1. tv rheinland: ac-15, 2 a/400 v 2. ul (ul5081csa c22.2 no.14) a600 rated voltage current switching power continuous make break make break 120 vac 10 a 60 a 6 a 7,200 va 720 va 240 vac 30 a 3 a 480 vac 15 a 1.5 a 600 vac 12 a 1.2 a characteristics switch type snap-action slow-action operating speed 1 mm/s to 50 cm/s operating frequency mechanical: 120 operations/min electrical: 30 operations/min rated frequency 50/60 hz insulation resistance 100 m w min. (at 500 vdc) between terminals of the same polarity and between each terminal and non-current-carrying part contact resistance 25 m w max. (initial value) 25 m w max. (initial value) dielectric strength between terminals of same polarity u imp 2.5 kv u imp 4 kv between terminals of different polarity --- u imp 4 kv between current-carrying metal parts and ground u imp 4 kv u imp 4 kv between each terminal and non-current-carrying parts u imp 4 kv u imp 4 kv rated insulation voltage (u i ) 600 vac (en60947-5-1) counter electromotive voltage at switching 1,500 vac max. (en60947-5-1) pollution degree 3 (en60947-5-1) short-circuit protective device 10-a fuse (type gi or gg) (iec269) conditional short-circuit current 100 a (en60947-5-1) conventional enclosed thermal current (i the ) 20 a (en60947-5-1) electric shock protection class class i (with grounding terminal) vibration resistance malfunction: 10 to 55 hz, 1.5-mm double amplitude shock resistance destruction: 1,000 m/s 2 min. {approx. 100g min.} malfunction: 300 m/s 2 min. {approx. 30g min.} life expectancy (see note 2.) mechanical: 30,000,000 operations min. electrical: 500,000 operations min. mechanical: 10,000,000 operations min. electrical: 500,000 operations min. contact gap 2 x 0.5 mm min. 2 x 2 mm min. bounce time 3 ms min. same as the operating speed ambient temperature operating: 40 c to 80 c (40 f to 176 f) with no icing (see note 4.) ambient humidity operating: 95% max. enclosure rating ul 3, 4, 4x, 6p and 13 g nema 3, 4, 4x, 6p and 13 iec529 ip67 (en60947-5-1) weight approx. 250 g note: 1. the above values are for initial operation. 2. the life expectancy is for an ambient temperature of 5 c to 35 c (41 f to 95 f) and ambient humidity of 40% to 70%. for fur- ther conditions, consult your omron sales representative. 3. the values in this table are for an ambient temperature of 5 c to 35 c (41 f to 95 f) and ambient humidity of 40% to 70%. for further conditions, consult your omron sales representative. 4. 25 c to 80 c (40 f to 176 f) for the wobble stick actuator type.
d4b- n d4b- n 5 operating characteristics legend: of = operating force (max.); rf = reset force (min.); ot = overtravel (min.); pt = pretravel; md = movement differential (max.); po = positively open (max.); tt = total travel; op = operating position part number description of rf ot pt md* po** tt op d4b- 11n side rotary, nylon roller lever 960 g (2.12 lbs.) 50 g (1.76 oz.) 50 21 3 12 35 75 --- d4b- 13n side rotary, adjustable roller lever 740 g (1.63 lbs.) 50 g (1.76 oz.) 50 21 3 12 35 75 --- d4b- 16n side rotary, adjustable roller lever 960 g (2.12 lbs.) 50 g (1.76 oz.) 50 21 3 12 35 75 --- d4b- 17n side rotary, adjustable rod lever 216 g (7.62 oz.) 11 g (0.39 oz.) 50 21 3 12 35 75 --- d4b- 70n plain top plunger 1900 g (4.19 lbs.) 200 g (7.05 oz.) 5 mm (0.20 in) 2 mm (0.08 in) 1 mm (0.04 in) 3.2 mm (0.13 in) 7 mm (0.28 in) 35 1 mm (1.38 0.04 in) d4b- 71n roller top plunger 1900 g (4.19 lbs.) 200 g (7.05 oz.) 5 mm (0.20 in) 2 mm (0.08 in) 1 mm (0.04 in) 3.2 mm (0.13 in) 7 mm (0.28 in) 48 1 mm (1.89 0.04 in) d4b- 81n coil spring wobble stick 150 g (5.29 oz.) --- --- 15 --- --- --- --- d4b- 87n plastic rod wobble stick 150 g (5.29 oz.) --- --- 15 --- --- --- --- note: * does not apply to dpst-nc (slow action) type switches. ** actuator travel necessary to assure positive contact opening. does not apply to spst (snap-action) type switches. operating characteristics for d4b- 16n switches were measured with the roller lever at 31.5 mm. operating characteristics for d4b- 17n switches were measured with the rod lever set at 140 mm. en g ineerin g data electrical life expectancy (snap-action) (cos = 1) (cos = 0.4) operations (x 10 ) 3 operations (x 10 ) 3 switching current (a) switching current (a) operating frequencies: 30 times/min., cos f = 1 operating frequencies: 30 times/min., cos f = 0.4 250 vac 500 vac 250 vac 500 vac 10,000 7,000 5,000 3,000 1,000 700 500 300 10,000 7,000 5,000 3,000 1,000 700 500 300
d4b- n d4b- n 6 construction turret head rotate the head to four 90 positions to fit the application. just loosen the head mounting screws and rotate. operating direction selector side rotary heads convert to clockwise, counterclockwise or bidirectional operation in seconds. just push the button at the base of the head and rotate to desired position indi- cated by a pointer. operating position mark (arrow) conduit entrance standard type is 1/2-14 npt, but pg13.5 for europe and pf1/2 for asia are available on special order. safety-oriented lever setting grooves which engage the lever every 90 are cut in the operation indicator disk to prevent the lever from slipping against the rotary shaft. ground terminal screw a ground terminal is provided to improve safety. equipped with operation display plate an optimum overtravel (ot) value may be secured by setting a desired ot value with a projection shearing force contact separating mechanism (nc contact section only) should any abnormality occur in the contact area, the contacts are positively pulled apart from each other by shearing force. push and rotate contact material ag alloy switch box material aluminum die-cast
d4b- n d4b- n 7 o peration positive contact opening mechanism 1no/1nc contact (snap-action) if metal deposition between mating contacts occurs on the nc contact side, they can be pulled apart by the shearing force and t ensile force generated when part b of the safety cam or plunger engages part a of the movable contact blade. when the safety cam or plunger is moved i n the direction of the arrow, the limit switch releases. 1. when metal deposition occurs. 2. when contacts are being pulled apart. 3. when contacts are completely pulled apart. movable contact blade movable contact plunger safety cam fixed contact (nc) safety cam directly pushes up the movable contact blade. a b 1nc/1no contact (slow-action) conforms to iec 947-5-1 positive opening when metal deposition occurs, the contacts are separated from each other by the plunger being pushed in. contact spring return spring fixed contact (nc) movable contact plunger 2nc contact (slow-action) conforms to en60947-5-1 when metal deposition occurs, the contacts are separated from each other by the plunger being pushed in. is marked on the product to indicate ap- proval of positive opening. contact spring return spring fixed contact (nc) movable contact plunger contact form (en50013) model contact diagrams (see note.) 1nc/1no contacts (snap-action) 13 11 14 12 only 11 to 12 contacts are positive opening. en60947-5-1 conformity za 11 to 12 13 to 14 0 2 mm max. (7 mm) 1nc/1no contacts (slow-action) 11 12 23 24 only 11 to 12 contacts are positive opening. en60947-5-1 conformity zb 11 to 12 23 to 24 0 2 mm max. (7 mm) (3 mm) 2nc contacts (slow-action) 11 21 12 22 both 11 to 12 and 21 to 22 contacts are positive opening. en60947-5-1 conformity zb 11 to 12 21 to 22 0 2 mm max. (7 mm) note: 1. contact operation closed open 2. the stroke value in parentheses refers to the d4b- 70n.
d4b- n d4b- n 8 dimensions unit: mm (inch) standard switches d4b-3111n, d4b-3511n, d4b-3a11n roller lever switch, nylon roller d4b-3113n, d4b-3513n, d4b-3a13n adjustable roller lever switch, rubber roller
d4b- n d4b- n 9 d4b-3116n, d4b-3516n, d4b-3a16n adjustable roller lever switch, nylon roller d4b-3117n, d4b-3517n, d4b-3a17n adjustable rod lever switch
d4b- n d4b- n 10 d4b-3170n, d4b-3570n, d4b-3a70n plain top plunger switch 43 (1.69) d4b-3171n, d4b-3571n, d4b-3a71n roller top plunger switch d4b-3181n, d4b-3a81n coil spring wobble stick switch
d4b- n d4b- n 11 d4b-3187n, d4b-3a87n plastic rod wobble stick switch three-conduit switches d4b-7111n, d4b-7511n, d4b-7a11n roller lever switch, nylon roller
d4b- n d4b- n 12 d4b-7113n, d4b-7513n, d4b-7a13n adjustable roller lever switch, rubber roller d4b-7116n, D4B-7516N, d4b-7a16n adjustable roller lever switch
d4b- n d4b- n 13 d4b-7117n, d4b-7517n, d4b-7a17n adjustable rod lever switch d4b-7170n, d4b-7570n, d4b-7a70n plain top plunger switch
d4b- n d4b- n 14 d4b-7171n, d4b-7571n, d4b-7a71n roller top plunger switch d4b-7181n, d4b-7a81n coil spring wobble stick switch
d4b- n d4b- n 15 d4b-7187n, d4b-7a87n plastic rod wobble stick switch roller levers d4b-0001n 15 16.8 11.7 11.5 17.5 dia. x 6.8 resin roller m5 hexagon clamping screws 7.3 dia. d4b-0002n 6 18 16 25.8 12 m5 x 12 hexagon clamping screws r33.7 (1.33) 50-dia. rubber roller (1.96) 30 dia. 31.5 (1.24) d4b-0003n 34 24.2 6 12.8 50-dia. rubber roller (1.96) m5 x 16 hexagon clamping screws r41 to 78.5 (1.61 to 3.09) adjustable 3.2 30 dia. d4b-0004n 24.8 14.9 6 11.4 50-dia. rubber roller r63 (2.48) 30 dia. 16 m5 x 12 hexagon clamping screws
d4b- n d4b- n 16 d4b-0005n 17 12 11.5 15 17.5 x 7-dia. stainless steel roller m5 x 12 hexagon clamping screws r31.5 (1.24) d4b-0006n 97 15.9 20 26 20.2 12.8 3.2 adjustable range 25 to 89 (0.98 to 3.50) 6.4 adjusting scale m5 hexagon clamping screws 19 dia. x 7 resin roller d4b-000rn d4b-0007n 12 18 17.8 12 160 5.4 21.6 12.5 28 stainless rod 19 dia. x 7 resin roller m5 hexagon clamping screws 7.3 dia. 3 dia. 17 11 m5 hexagon clamping screws 145 max. (5.71) 33.7 (1.33) installation operation selection side rotary models of d4b-n limit switches can be set for clockwise (cw), counterclockwise (ccw) or two-way (cw + ccw) operation to match the application. use the following procedure: 1. remove the head by loosening the four screws that secure the head to the switch body. 2. turn over the head to set the desired operation (cw, ccw, or cw + ccw). the desired operation can be selected by setting the mode selector knob as shown in the figure. this knob is factory set for cw + ccw (two-way) operation.
d4b- n d4b- n 17 precautions if the d4b- n is applied to an emergency stop circuit or safety circuit for prevention of injury, use the d4b- n model that has an nc contact equipped with a force-separation mechanism, and make sure that the d4b- n operates in the positive mode. also, secure the d4b- n with screws or equivalent parts that are tightened in a single direction so that the d4b- n cannot be easily removed. then provide a protection cover for the d4b- n and post a warning label near the d4b- n. in order to protect the d4b- n from damage due to short- circuiting, connect a fuse breaking a current 1.5 to 2 times higher than the rated current in parallel with the d4b- n. if an application satisfying en standards is to employ the d4bl, apply the 10-a gi or gg fuse approved by iec269. do not apply the d4b- n to the door without applying a stopper to the door. if the d4b- n is used with the actuator normally pressed, the d4b- n may malfunction or may soon have reset failures. be sure to check and replace the d4b- n regularly. operating environment the d4b- n is for indoor use. the d4b- n may malfunction if the d4b- n is used outdoors. be sure to use a model with a lever-type actuator for outdoor use instead. do not use the d4b- n in the following places: ? places with radical temperature changes. ? places with excessive humidity that may cause condensa- tion. ? places with excessive vibration. ? places where metal dust, oil, or chemical may be sprayed to the d4b- n. tightening torque (3) (4) (1) (5) (2) since loose screws may cause a malfunction, tighten each screw to the appropriate torque. no. type proper tightening torque 1 terminal screw 0.59 to 0.78 n m {6 to 8 kgf cm} 2 cover-mounting screw 1.18 to 1.37 n m {12 to 14 kgf cm} 3 head-mounting screw 0.78 to 0.98 n m {8 to 10 kgf cm} 4 switch-mounting screw (m5) 4.90 to 5.88 n m {50 to 60 kgf cm} 5 connector 1.77 to 2.16 n m {18 to 22 kgf cm} 6 cap screw (for three-conduit models) 1.27 to 1.67 n m {13 to 17 kgf cm} note: apply a tightening torque of 0.78 to 0.88 n m {8 to 9 kgf cm} to conduit models. mounting use four m5 screws with washers to mount the standard model. be sure to apply the proper torque to tighten each screw. the d4b- n can be mounted more securely by using the four screws plus two 5 0.05 / 0.15 -mm protruding parts, each of which has a maximum height of 4.8 mm as shown below. mounting dimensions (m5) 30 60 59.3 0.1 30 40 42 27 0.1 5 dia. holes, max. 5 height 0.15 0.05 standard model 3-conduit model protruding portions changes in actuator mounting position to change the angle of the lever, loosen the hexagon-head bolts on the side of the lever. the operation indicator plate has protruding parts which engage with the lever, thus allowing changes to the lever position by 90 . the back of the operation indicator plate has no protruding parts. the lever can be set at any angle by attaching the operation indicator plate to the switch so that this side will face the lever. in this case, however, the d4b- n will not be approved by suva or bia. make sure that the lever engages with the operation indicator plate securely so that the lever will not slip. changes in head mounting position by removing the screws on the four corners of the head, the head can be reset in any of four directions. make sure that no foreign materials will penetrate through the head. wiring do not connect the bare lead wires directly to the terminals, but you must connect each of them by using an insulation tube and m3.5 round solderless terminals and tighten each terminal screw within the specified torque range. the proper lead wire is 20 to 14 awg (0.5 to 2.5 mm 2 ) in size. dz dia.: 3.7 d dia.: 4.5 b: 7.0 l: 20.2 f: 7.7 i: 9.0 (mm) d dia. dz dia.
d4b- n d4b- n 18 make sure that all solderless terminals come into contact with the casing or cover as shown below, or the cover may not be mounted properly or the d4b- n may malfunction. crimp-style terminal case cover terminal screw crimp-style terminal terminal screw case terminal screw cover crimp-style terminal correct correct incorrect incorrect crimp-style terminal crimp-style terminal connector tighten the connector within the specified torque range. the casing may be damaged if the connector is tightened excessively. if the 1/2-14npt is used, cover the cable and conduit end with sealing tape in order to ensure ip67. the pg13.5 connector must be nippon flex's abs-08pg13.5 or abs-12 pg13.5. use omron's sc-series connector which is suited to the cable in diameter. when wiring the d4b- n, correctly attach the conduit cap (provided) to the unused conduit opening and securely tighten the cap screw within the specified torque. avoid damage the load for the actuator (roller) of the switch must be imposed on the actuator in the horizontal direction, or the actuator or the rotating axis may be deformed or damaged. dog dog top view correct incorrect when using a long-lever model when using a long-lever model like the d4b- 16n or d4b- 17n, the switch may telegraph. to avoid telegraphing, take the following precautions. 1. set the lever to operate in one direction. for details, see page no tag, cw, ccw or two-way operation . 2. modify the rear end of the dog to an angle of 15 to 30 as shown below or to a secondary-degree curve. q q q 30 15 q 30 3. modify the circuit so as not to detect the wrong operating signals. correct selection and usage of switches snap-action switch a snap-action switch takes only a short time to switch electric current, which reduces contact arcing and prevents contacts from wear and tear. for this reason, a snap-action switch is more ideal than a slow-action switch for applications that require high repeat accuracy, high operation frequency, and slow operating speed. slow-action switch the electric current switching time of a slow-action switch differs in proportion to the operating speed of the switch. a slow-action switch operates safely via direct drive positive contact opening, even after metal deposition between mating contacts and provides insulation capability after contact separation. opposite polarity ensures high contact reliability, even when voltages and currents are small and allows switching of voltages of different potential by contacts blocks with several contacts. for example, it is possible to perform a control function with 220 vac and signalling function with 60 vdc using only one device. safety switch the nc contact section of the d4b- n's built-in switch incorporates a shearing force contact separating mechanism. based on the above mentioned switching features, the snap-action switch can be mainly applied to positioning control purposes and the slow-action switch can be mainly applied to safety, and protection purposes. both slow- and snap-action switches conform to bs5304, iec 204-1, and vde 0113 safety standard.
d4b- n d4b- n cat. no. cedsax3 10/99 specifications subject to change without notice. printed in u.s.a. omron electronics, inc. one east commerce drive schaumburg, il 60173 note: dimensions shown are in millimeters. to convert millimeters to inches divide by 25.4. 1-800-55-omron omron canada, inc. 885 milner avenue scarborough, ontario m1b 5v8 416-286-6465

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