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74 general-purpose limit switch d4a- @n general-purpose limit switch d4a- @n the limit switch with better seal, shock resistance, and strength a double seal on the head, a complete gasket cover, and other features ensure a better seal (meets ul nema 3, 4, 4x, 6p, 12, 13). block mounting method to reduce weight to 290 g. block mounting method also reduces downtime for mainte- nance. wide standard operating temperature range: ?40 c to 100 c (standard type). models with fluoro-rubber available for greater resistance to chemicals. dpdt, double-break models available for complex operations. approved by ul, csa, and ccc (chinese standard). model number structure model number legend 1. receptacle box 1: 1/2-14 npt conduit (spdt, double-break) 2: 1/2-14 npt conduit (dpdt, double-break) 3: g 1/2 conduit (spdt, double-break) 4: g 1/2 conduit (dpdt, double-break) 2. switch box 1: spdt, double-break, without indicator 3: spdt, double-break, neon lamp e: spdt, double-break, led (24 vdc, leakage current: 1.3 ma) 5: dpdt, double-break, simultaneous operation, without indi- cator 7: dpdt, double-break, sequential operation, without indicator (see note 1.) 9: dpdt, double-break, center neutral operation, without indi- cator (see note 2.) l: dpdt, double-break, simultaneous operation, neon lamp p: dpdt, double-break, simultaneous operation, led 3. head 01: roller lever, standard 02: roller lever, high-sensitivity 03: roller lever, low torque 04: roller lever, high-sensitivity, low torque 05: roller lever, maintained 17: roller lever, sequential operation 18: roller lever, center neutral operation 06: side plunger, standard 07-v: side plunger, vertical roller 07-h: side plunger, horizontal roller 08: side plunger, adjustable 09: top plunger, standard 10: top plunger, roller 11: top plunger, adjustable 12: flexible rod, spring wire 14: flexible rod, plastic rod 15: flexible rod, cat whisker 16: flexible rod, coil spring note: 1. use the d4a-0017n special head. 2. use the d4a-0018n special head. 3. fluoro-rubber sealed type is also available. 1 2 3 d4a- @@@@ n
general-purpose limit switch d4a- @n 75 ordering information list of models spdt, double-break switches note: 1. the lever is not included with the roller level models. select the lever from those listed in this data sheet and order it sepa rately (refer to levers on pages 92 and 93). 2. the maintained switches have a lock mechanism for the switch operation and thus use a fork lever lock. 3. switches are also available with @ 1/2-14 npt conduits. the model numbers correspond as follows: g 1/2 conduits 1/2-14 npt conduits d4a-3 @@@ n d4a-1 @@@ n d4a-4 @@@ n d4a-2 @@@ n 4. switches are also available with fluoro-r ubber seals for higher resistance to chemic als. (the operating temperature range for t hese switches, however, is ? 10 to 120 c.) add ?-f? to the model number. (example: d4a-3101n becomes d4a-3101n-f.) ask your nearest omron representative for details. receptacle box g 1/2 conduit indicator without indicator with neon lamp indicator (ac) with led indicator (dc) actuator model approved standards model approved standards model roller lever (see note 1.) standard d4a-3101n ul, csa d4a-3301n ul, csa d4a-3e01n high-sensitivity d4a-3102n ul, csa d4a-3302n ul, csa d4a-3e02n low-torque d4a-3103n ul, csa --- ul, csa --- high-sensitivity, low- torque d4a-3104n ul, csa d4a-3304n ul, csa --- maintained (see note 2.) d4a-3105n ul, csa d4a-3305n ul, csa d4a-3e05n side plunger standard d4a-3106n ul, csa --- ul, csa --- vertical roller d4a-3107-vn ul, csa d4a-3307-vn ul, csa d4a-3e07-vn horizontal roller d4a-3107-hn ul, csa d4a-3307-hn ul, csa --- adjustable d4a-3108n ul, csa d4a-3308n ul, csa d4a-3e08n top plunger standard d4a-3109n ul, csa d4a-3309n ul, csa --- roller d4a-3110n ul, csa d4a-3310n ul, csa --- adjustable d4a-3111n ul, csa d4a-3311n ul, csa --- flexible rod spring wire d4a-3112n ul, csa d4a-3312n ul, csa d4a-3e12n plastic rod d4a-3114n ul, csa d4a-3314n ul, csa d4a-3e14n cat whisker d4a-3115n ul, csa d4a-3315n ul, csa d4a-3e15n coil spring d4a-3116n ul, csa d4a-3316n ul, csa d4a-3e16n
76 general-purpose limit switch d4a- @n dpdt, double-break switches note: 1. the lever is not included with the roller level models. select t he lever from those listed in th is data sheet and order it sepa rately (refer to levers on pages 92 and 93). 2. the maintained switches have a lock mechanism for the switch operation and thus use a fork lever lock. 3. switches are also available with @ 1/2-14 npt conduits. the model numbers correspond as follows: g 1/2 conduits 1/2-14 npt conduits d4a-3 @@@ n d4a-1 @@@ n d4a-4 @@@ n d4a-2 @@@ n 4. switches are also available wit h fluoro-rubber seals for higher resistance to chemicals. (the operating temperature range for t hese switches, however, is ? 10 to 120 c.) add ?-f? to the model number. (example: d4a-4501n becomes d4a-4501n-f.) ask your nearest omron representative about delivery times and prices. receptacle box g 1/2 conduit indicator without indicator with neon lamp indicator (ac) with led indicator (dc) actuator model approved standards model approved standards model roller lever (see note 1.) standard d4a-4501n ul, csa d4a-4l01n ul, csa d4a-4p01n high-sensitivity d4a-4502n ul, csa --- --- --- low-torque d4a-4503n ul, csa --- --- --- high-sensitivity, low- torque d4a-4504n ul, csa --- --- --- maintained (see note 2.) d4a-4505n ul, csa --- --- --- sequential operation d4a-4717n ul, csa --- --- --- center neutral opera- tion d4a-4918n ul, csa --- --- --- side plunger standard d4a-4506n ul, csa --- --- --- vertical roller d4a-4507-vn ul, csa --- --- --- horizontal roller d4a-4507-hn ul, csa --- --- --- adjustable d4a-4508n ul, csa --- --- --- top plunger standard d4a-4509n ul, csa --- --- --- roller d4a-4510n ul, csa d4a-4l10n ul, csa d4a-4p10n adjustable d4a-4511n ul, csa --- --- --- flexible rod spring wire d4a-4512n ul, csa --- --- --- plastic rod d4a-4514n ul, csa --- --- --- cat whisker d4a-4515n ul, csa --- --- --- coil spring d4a-4516n ul, csa --- --- ---
general-purpose limit switch d4a- @n 77 individual parts replacement of parts because the d4a- @ n employs block mounting construction, the switch box, receptacle, and operating head may be ordered as a complete assembly or individually as replacement parts. receptacle box note: 1. m6-screw mounting (standard mounting) 2. 10-32unf-screw mounting (standard mounting) switch box receptacle switch box head lever d4a-1101n d4a-1000n d4a-0100n d4a-0001n levers for roller lever switches are optionally available. select the lever from those listed in this datasheet and order (refer to levers on pages 92 and 93). type appearance 1/2-14npt conduit (see note 2.) g1/2 conduit (see note 1.) model approved standards model approved standards spdt double- break d4a-1000n ul, csa d4a-3000n ul, csa dpdt double- break d4a-2000n ul, csa d4a-4000n ul, csa type appearance without indicator with neon lamp indicator (ac) with led indicator (dc) model approved standards model approved standards model spdt double-break d4a-0100n ul, csa d4a-0300n ul, csa d4a-0e00n dpdt double-break simultaneous operation d4a-0500n ul, csa d4a-0l00n --- d4a-0p00n sequential oper- ation d4a-0700n ul, csa --- --- --- center neutral operation d4a-0900n ul, csa --- --- --- (without indicator lamp) (without indicator lamp)
78 general-purpose limit switch d4a- @n heads note: 1. levers for roller lever switches are optionally available. sele ct the lever from those listed in this data sheet and order (ref er to levers on pages 92 and 93). 2. the d4a-c00 adjustable roller lever is too heavy and long for these heads and it should not be used or mechanical malfunction w ill result. 3. these heads cannot be used for double break operations. levers note: refer to page 92 for lever shapes and applicable models. type appearance approved standards roller lever (see note 1.) ul, csa ul, csa side plunger ul, csa top plunger ul, csa flexible rod ul, csa standard: d4a-0001n high-sensitivity: d4a-0002n low torque: d4a-0003n (see note 2) sequential operation: d4a-0017n (see note 3) center neutral operation: d4a-0018n (see note 3) maintained: d4a-0005n standard: d4a-0006n horizontal roller: d4a-0007-hn vertical roller: d4a-0007-vn side adjustable: d4a-0008n standard: d4a-0009n roller plunger: d4a-0010n plunger adjustable: d4a-0011n spring wire d4a-0012n plastic rod d4a-0014n cat whisker d4a-0015n coil spring d4a-0016n actuator type model roller lever d4a-a00 d4a-a10 d4a-a20 d4a-a30 d4a-b06 adjustable roller lever d4a-c00 d4a-d00 resin loop lever d4a-f00 fork lever lock d4a-e30 d4a-e20 d4a-e10 d4a-e00
general-purpose limit switch d4a- @n 79 specifications approved standards note: ask your omron representative for information on approved models. approved standard ratings ul/csa a600 d4a- @ 1 @@ n (spdt, double-break, without indicator) a300 d4a- @ 3 @@ n (spdt, double-break, with neon lamp) b600 d4a- @ 5 @@ n (dpdt, double-break, simultaneous operation) d4a- @ 7 @@ n (dpdt, double-break, sequential operation) d4a- @ 9 @@ n (dpdt, double-break, center neutral operation) ccc (gb14048.5) agency standard file no. ul ul508 e76675 csa csa c22.2 no. 14 lr45746 ccc (cqc) gb14048.5 2003010305077615 rated voltage carry current current volt-amperes make break make break 120 vac 240 vac 480 vac 600 vac 10 a 60 a 30 a 15 a 12 a 6 a 3 a 1.5 a 1.2 a 7,200 va 720 va rated voltage carry current current volt-amperes make break make break 120 vac 240 vac 10 a 60 a 30 a 6 a 3 a 7,200 va 720 va rated voltage carry current current volt-amperes make break make break 120 vac 240 vac 480 vac 600 vac 5 a 30 a 15 a 7.5 a 6.0 a 3 a 1.5 a 0.75 a 0.6 a 3,600 va 360 va applicable category and ratings ac-15 2 a/125 vac
80 general-purpose limit switch d4a- @n general ratings note: 1. the above current ratings are for steady-state current. 2. inductive loads have a power factor of 0.4 min. (ac) and a time constant of 7 ms max. (dc). 3. lamp loads have an inrush current of 10 times the steady-state current. 4. motor loads have an inrush current of 6 times the steady-state current. 5. for those with indicators, refer to the following rated voltages. ratings for indicators type rated voltage non-inductive load inductive load resistive load lamp load inductive load motor load nc no nc no nc no nc no spdt double-break (with/without indicator) 125 vac (see note 5.) 10 a 10 a 3 a 1.5 a 10 a 5 a 2.5 a 250 vac (see note 5.) 10 a 10 a 2 a 1 a 10 a 3 a 1.5 a 480 vac 10 a 10 a 1.5 a 0.8 a 3 a 1.5 a 0.8 a 600 vac 3 a 1 a 1 a 0.5 a 1.5 a 1 a 0.5 a 8 vdc 10 a 6 a 3 a 10 a 6 a 14 vdc 10 a 6 a 3 a 10 a 6 a 30 vdc6 a4 a3 a6 a4 a 125 vdc (see note 5.) 0.8 a 0.2 a 0.2 a 0.8 a 0.2 a 250 vdc (see note 5.) 0.4 a 0.1 a 0.1 a 0.4 a 0.1 a dpdt double-break (without indicator) 125 vac 5 a 2 a 4 a 3 a 250 vac 3 a 1 a 2 a 1.5 a 480 vac 1.5 a 0.5 a 1 a 0.8 a 600 vac 1 a 0.4 a 0.7 a 0.5 a 14 vdc5 a2 a4 a3 a 30 vdc3 a1 a2 a1.5 a 125 vdc 0.4 a 0.1 a 0.4 a 0.1 a 250 vdc 0.2 a 0.05 a 0.2 a 0.05 a dpdt double-break (with indicator) 125 vac 5 a 2 a 4 a 3 a 250 vac 3 a 1 a 2 a 1.5 a 12 vdc 5 a --- --- --- --- 24 vdc 3 a 48 vdc 1 a type spdt, double-break dpdt, double-break without indicator with indicator without indicator with indicator inrush current normally closed 30 a max. normally open 20 a max. classification indicator model rated voltage carry current internal resistance spdt double-break neon lamp d4a-0300n 125 vac, 250 vac approx. 0.47 ma 150 k ? led d4a-0e00n 12 vdc approx. 3.2 ma 2.2 k ? 24 vdc approx. 4 ma 4.7 k ? 24 vdc approx. 1.3 ma 15 k ? 48 vdc approx. 2 ma 22 k ? dpdt double-break neon lamp d4a-0l00n 125 vac, 250 vac approx. 0.28 ma 240 k ? led d4a-0p00n 48 vdc approx. 1.4 ma ---
general-purpose limit switch d4a- @n 81 characteristics note: 1. the above figures are initial values. 2. excluding maintained models. 3. the values are calculated at an operating temperature of 5 c to 35 c, and an operating humidity of 40% to 70%. contact your omron sales representative for more detailed information on other operating environments. 4. 1,500 vac is applied to the indicator lamp type. 5. not including wobble levers (cat whisker, plastic rod, coil spring, and spring wire types). 5-1. excluding low-torque and high-sensitivity models. 5-2. including roller lever low-torque and high-sensitivity operating models. degree of protection ip67 durability (see note 3.) mechanical: spdt, double-break, roller lever: 50,000,000 operations min. (see note 2.) dpdt, double-break, roller lever: 30,000,000 operations min. (see note 2.) electrical: spdt, double-break: for 125 vac, 10 a resistive load: 1,000,000 operations min. dpdt, double-break: for 125 vac, 5 a resistive load: 750,000 operations min. operating speed 1 mm to 2 m/s (for d4a-3101n roller lever model) operating frequency mechanical: 300 operations/minute electrical: 30 operations/minute rated frequency 50/60 hz insulation resistance 100 m ? min. (at 500 vdc) between terminals of the same polarity, between current-carrying metal parts and ground, and between each terminal and non-current-carrying metal part contact resistance 25 m ? max. (initial value) temperature rise 50 c max. dielectric strength 1,000 vac, 50/60 hz for 1 min. between terminals of same polarity 2,200 vac, 50/60 hz for 1 min. between current-carrying metal parts and ground, and between each terminal and non-current-carrying metal part (see note 4.) pollution degree (operating environment) 3 protection against electric shock class i (with grounding terminal) vibration resistance malfunction: 10 to 55 hz, 1.5-mm double amplitude (see note 5.) shock resistance destruction: 1,000 m/s 2 min. malfunction: spdt, double-break, roller lever: 600 m/s 2 min. (see note 5.) dpdt, double-break, roller lever: 300 m/s 2 min. (see note 5.) ambient operating humidity 35% to 95% (with no icing) weight approx. 290 g (for d4a-3101n roller lever model) type roller lever (see note 5-1.) plunger, flexible rod (see note 5-2.) with indicator fluoro-rubber seal ambient temperature ?40 c to 100 c ?20 c to 100 c ?10 c to 80 c?10 c to 120 c
82 general-purpose limit switch d4a- @n connections contact forms (switch boxes) stdp double-break switches note: switches with indicators are factory-set to light when the switch is not operated. dtdp double-break switches each of these switches can be used to repl ace two limit switches in applications, such as high-speed control in machine tools a nd switching motors between forward and reverse, that previously required 2 limit s witches. this simplifies wiring, saves space, and reduces costs. type contact model operating pattern without indicator with neon lamp indicator (see note.) with led indicator (see note.) 1nc/1no snap-action d4a-0100n d4a-0300n lamp unit internal circuits d4a-0e00n lamp unit internal circuits 3 4 1 2 za 4 1 2 3 lamp unit lamp unit za neon lamp resistor 4 1 2 3 lamp unit lamp unit za bridge rectifier leds resistor 1-2 3-4 energized stroke type contact model operating pattern remarks without indicator with neon lamp indicator (see note.) with led indicator (see note.) 2nc/2no snap-action, simultaneous opera- tion d4a-0500n d4a-0l00n d4a-0p00n head is compatible with double-break head. can be switched for operation on both sides of actuator. 2nc/2no snap-action, sequential operation (2-step operation) d4a-0700n --- --- use the d4a-0017n special head. 2nc/2no snap-action, central neutral opera- tion d4a-0900n --- --- use the d4a-0018n special head. 5-6 7-8 1-2 3-4 energized stroke 5-6 7-8 1-2 3-4 energized stroke 5-6 7-8 1-2 3-4 right operation left operation free position energized
general-purpose limit switch d4a- @n 83 note: switches with indicators are factory-set to light when the switch is not operated, but the setting can be changed to light for operation (dotted lines). nomenclature dpdt double-break note: 1. nbr is used in rubber components. 2. fluoro-rubber sealed ty pes use fluoro-rubber. 3. for roller levers, there is some lever play in the free positi on (about 2 mm), but this is due to the structure of the head and does not interfere with performance. item without indicator with neon lamp indicator (see note.) with led indicator (see note.) contact form d4a-0500n d4a-0700n d4a-0900n d4a-0l00n d4a-0p00n lamp unit internal cir- cuit --- 4 1 8 5 3 2 7 6 za 3 4 12 7 8 56 lamp unit lamp unit lamp unit lamp unit za za 3 4 12 7 8 56 lamp unit lamp unit lamp unit lamp unit za za neon lamp resistor bridge rectifier constant current diode led head operating position mark (arrow) bearings receptacle conduit opening roller the roller actuator is made of hardened stainless steel and excels in resistance to wear. lever with the roller lever switch, the lever can be installed anywhere in a 360 range (180 if the lever is reversed and attached to the shaft). oil seal improved sealing property is ensured with a double-seal construction (a oil seal plus an x-ring seal). switch box boasts long life expectancy (50 million mechanical operations or more with the 2-pole double-break switches and 30 million mechanical operations or more with the dpdt double-break switches). ground terminal screw a ground terminal is provided to enhance safety. switch box screw sealed gasket with the roller lever and side plunger switches, the direction of the switch head can be varied to any of the four directions by loosing the roller lever switch screws at the four corners of the head. the roller lever switch employs a system which allows selection of the operation of only one side (left or right) or both sides without use of any tools. the copper-alloy bearings ensure long life ex- pectancy. the plug-in type receptacle provides adequate space for wiring. g 1/2 conduit threads featuring high sealing property are used. (consult your omron representative for details on sc connectors). a terminal box with 1/2-14npt conduit threads is also available on request. the employed full-cover method prevents the gasket from direct exposure to oil or water spray. a phillips screw is used to secure the switch housing for ease of use, and features a meas- ure to prevent the screw from coming off.
84 general-purpose limit switch d4a- @n easy-maintenance block mounting block mounting makes it possible to easily assemble or disassemble the head, switch body, and receptacle of the d4a- @ n by tightening or loosening the attached screws. engineering data electrical durability (spdt double-break) electrical durability (dpdt double-break) actuator head receptacle switch box 125 vac 250 vac 480 vac 125 vac 250 vac 480 vac (ambient temperature: 5 c to 35 c; ambient humidity: 40% to 70%) switching current (a) durability (x 10 4 operations) durability (x 10 4 operations) switching current (a) operating frequencies: 30 operations/min, cos = 1 operating frequencies: 30 operations/min, cos = 0.4 125 vac 250 vac 480 vac 125 vac 250 vac 480 vac durability (x 10 4 operations) durability (x 10 4 operations) switching current (a) switching current (a) operating frequencies: 30 operations/min, cos = 1 operating frequencies: 30 operations/min, cos = 0.4
general-purpose limit switch d4a- @n 85 installation operation changing the operating direction the head of the side rotary type can be converted in seconds to cw, ccw, or both-way operation. fo llow the procedures on the right hand side for conversion (not applicable to the maintained, sequen- tial operating, center neutral operating switches). operating part (rear of head) procedures 1. dismount the head by loosening the four screws that secure it. 2. turn over the head to set the desired operation (cw, ccw, or both). the desired side can be selected by setting the mode selector knob shown in the figure. this knob is factory set to the ?cw+ccw? (both-way operation) position. 3. when set to the cw position, the head rotates in clockwise direc- tion. when set to the ccw position, the head rotates in counterclock- wise direction. in either case, be sure to accurately align the arrow mark to the setting position. operating position arrow marks
86 general-purpose limit switch d4a- @n head and lever positions the operating head can be positioned and locked in any of four 90 positions and a lever can lock in any position through 360 around the shaft of the limit switch. furthermore, the lever can be reversed and attached to the shaft (refer to the figures below on the right han d side). therefore the roller is compatible with a wide movement range of a dog. a fo rk lever lock can be used with maintained models (d4a-0005n) only . lighting mode selection of indicators the lighting mode of the operation indicator can be changed easil y between two modes: lighting when the switch is operating and lighting when the switch is not operating. loosen the screw to adjust the length of the rod. loosen the bolt to adjust the length of the lever. adjustable between 33 and 91 mm d4a-e00 d4a-e10 d4a-e20 d4a-e30 four, m4 x 12 remove the head from the switch by loosening the screws (the screws can be loosened but not removed from the head). the operating head can be positioned and locked in any of four 90 positions. the lever can lock in any position through 360 around the shaft. the lever can be reversed and attached to the shaft, in which case the switching operation should com- plete in a range of 0 to 180 . by loosening the allen-head bolt on an adjustable roller lever or rod lever, the length of the lever can be adjusted. d4a-c00 d4a-d00 180 operating position 360 operating position there are four kinds of fork lever locks. the position of each roller is different. it is possible to use d4a-e00 through d4a-e30 levers instead, if they are reversed before attaching. they can be used with d4a- @@ 05n models only. lights when not operating lights when operating note: 1. the lamp is lit when the actuator is at the free position. the lamp will be off when the contacts of the limit switch have been actuated and snapped to each other at the operating position. 2. the lamp is lit when the contacts have been released and snapped only from the operating position. (see note 1.) (see note 2.) 2 3 4 1 load power supply built-in switch internal circuits 3 4 2 1 built-in switch load power supply internal circuits
general-purpose limit switch d4a- @n 87 change the lighting mode as follows: lever position nameplate compatibility with d4a- @ the d4a- @ n is compatible with the d4a- @ when the following accessories are attached to the d4a- @ n. note: the d4a- @ n without the above accessories is not compatible with the d4a- @ . push the claw securing the lamp section to the right (do not push strongly). remove the lamp section. mount the lamp section so that legend "nc-on" or "no-on" will appear in the display window. note: in either case, the lamp will not light when the load is on. 86.9 to 92.4 73 to 78.5 38.9 to 44.4 67 to 72.5 44.9 to 50.4 59 to 64.5 52.9 to 58.4 d4a-a00 d4a-a10 d4a-a20 d4a-a30 25 to 30.5 the type of switch box is printed. (the type is also indicated on the head and receptacle.) the whole switch model without lever is printed. d4a- @ receptacle box d4a- @ n switch box d4a- @ n head
88 general-purpose limit switch d4a- @n dimensions note: 1. all units are in millimeters unless otherwise indicated. 2. insert the model number code in @ for the switch body. 3. unless otherwise specif ied, a tolerance of 0.4 mm applies to all dimensions. roller lever switches note: levers of the side rotary type are optionally available. spdt double-break dpdt double-break the figures in the parentheses are average values. model d4a-1 @ 01n d4a-1 @ 02n d4a-1 @ 03n d4a-1 @ 04n d4a-1 @ 05n of max. 0.39 nm 0.39 nm 0.2 nm 0.2 nm 0.39 nm rf min. 0.05 nm 0.05 nm --- --- --- pt max. 15 (12 )7 (6 )15 (12 )7 (6 )65 (60 ) ot min. 70 75 70 75 20 md max. 5 (4 )4 (3 )5 (4 )4 (3 )35 (30 ) 5.2 6 0.8 70.5 19.1 38.1 42 62 47.5 21 75.5 16.5 28 44 59.5 0.2 2.6r 2.6r 29.4 0.2 19 24.5 34 70.5 5.2 42 0.8 6 62.5 48 21 16.5 44 75.5 2.6r 2.6r 29.4 0.2 59.5 0.2 28 29.5 29.5 7.25 dia. 7.25 dia. standard d4a-1 @ 01n, d4a-2 @ 01n high-sensitivity d4a-1 @ 02n, d4a-2 @ 02n center neutral operating d4a-2 @ 18n low torque d4a-1 @ 03n, d4a-2 @ 03n high-sensitivity/low torque d4a-1 @ 04n, d4a-2 @ 04n sequential operation d4a-2 @ 17n maintained d4a-1 @ 05n, d4a-2 @ 05n four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting model d4a-2 @ 01n d4a-2 @ 02n d4a-2 @ 03n d4a-2 @ 04n d4a-2 @ 05n d4a-2 @ 17n d4a-2 @ 18n of max. 0.39 nm 0.39 nm 0.2 nm 0.2 nm 0.39 nm 0.39 nm 0.39 nm rf min. 0.05 nm 0.05 nm --- --- --- 0.05 nm 0.02 nm pt max. 15 (12 )7 (6 )15 (12 )7 (6 )65 (60 ) 1-stage: 12 (10 ) 2-stage: 20 (17 ) 19 (15 ) ot min. 70 75 70 75 20 65 65 md max. 7 (6 )5 (4 )7 (6 )5 (4 )35 (30 )6 (5 )5 (4 )
general-purpose limit switch d4a- @n 89 side plunger switches 6 5.2 44 16.5 28 29.5 75.5 42 19 70.5 0.8 21 op pt 29.4 0.2 59.5 0.2 2.6r 2.6r 21.5 31.1 5.2 16.5 28 29.5 44 42 21.5 19 31.1 70.5 75.5 6 0.8 21 op pt 29.4 0.2 59.5 0.2 2.6r 2.6r 42 5.2 6 0.8 21.5 19 31.1 70.5 75.5 21 16.5 28 29.5 44 op pt 59.5 0.2 2.6r 2.6r 29.4 0.2 70.5 19 6 0.8 21.5 31.1 5.2 42 75.5 16.5 28 29.5 44 21 59.5 0.2 2.6r 2.6r op pt 29.4 0.2 10 dia. standard d4a-1 @ 06n, d4a-2 @ 06n horizontal roller d4a-1 @ 07-hn, d4a-2 @ 07-hn vertical roller d4a-1 @ 07-vn, d4a-2 @ 07-vn adjustable d4a-1 @ 08n, d4a-2 @ 08n four, m4 (length: 12) screws for head stainless steel plunger 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting four, m4 (length: 12) screws for head 11 dia.x 5 stainless steel roller 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting four, m4 (length: 12) screws for head 11 dia.x 5 stainless steel roller 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting four, m4 (length: 12) screws for head m5 x 0.8 (length: 14 allen-head bolt 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting model spdt double-break dpdt double-break d4a-1 @ 06n d4a-1 @ 07-hn d4a-1 @ 07-vn d4a-1 @ 08n d4a-2 @ 06n d4a-2 @ 07-hn d4a-2 @ 07-vn d4a-2 @ 08n of max. 19.61 n 19.61 n 19.61 n 19.61 n 19.61 n 19.61 n 19.61 n 19.61 n rf min. 4.90 n 4.90 n 4.90 n 4.90 n 4.90 n 4.90 n 4.90 n 4.90 n pt max. 2.4 mm 2.4 mm 2.4 mm 2.4 mm 2.4 mm 2.4 mm 2.4 mm 2.4 mm ot min. 5.1 mm 5.1 mm 5.1 mm 5.1 mm 5.1 mm 5.1 mm 5.1 mm 5.1 mm md max. 0.6 mm 0.6 mm 0.6 mm 0.6 mm 1.0 mm 1.0 mm 1.0 mm 1.0 mm op 34 0.8 mm 44 0.8 mm 44 0.8 mm 41 to 47.5 mm 34 0.8 mm 44 0.8 mm 44 0.8 mm 41 to 47.5 mm
90 general-purpose limit switch d4a- @n top plunger switches 6 42 5.2 70.5 27 0.8 75.5 16.5 28 29.5 44 21 op pt 2.6r 2.6r 29.4 0.2 59.5 0.2 6 42 5.2 70.5 27 0.8 16.5 28 29.5 44 21 75.5 2.6r op pt 2.6r 29.4 0.2 59.5 0.2 6 42 5.2 21 75.5 16.5 28 29.5 44 70.5 27 op pt 2.6r 2.6r 29.4 0.2 59.5 0.2 0.8 m5 x 0.8 (length:14) allen-head bolt 11 dia. x 5 stainless steel roller stainless steel plunger 10 dia. standard d4a-1 @ 09n, d4a-2 @ 09n roller plunger d4a-1 @ 10n, d4a-2 @ 10n adjustable d4a-1 @ 11n, d4a-2 @ 11n four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting model spdt double-break dpdt double-break d4a-1 @ 09n d4a-1 @ 10n d4a-1 @ 11n d4a-2 @ 09n d4a-2 @ 10n d4a-2 @ 11n of max. 17.65 n 17.65 n 17.65 n 17.65 n 17.65 n 17.65 n rf min. 4.90 n 4.90 n 4.90 n 4.90 n 4.90 n 4.90 n pt max. 1.6 mm 1.6 mm 1.6 mm 1.6 mm 1.6 mm 1.6 mm ot min. 5.1 mm 5.1 mm 5.1 mm 5.1 mm 5.1 mm 5.1 mm md max. 0.4 mm 0.4 mm 0.4 mm 1.0 mm 1.0 mm 1.0 mm op 46 0.8 mm 56 0.8 mm 55.5 to 62 mm 46 0.8 mm 56 0.8 mm 55.5 to 62 mm
general-purpose limit switch d4a- @n 91 flexible rod switches (124) 27 0.8 6 42 5.2 93.5 170.5 70.5 16.5 28 29.5 44 75.5 21 pt 2.6r 2.6r 29.4 0.2 59.5 0.2 5.2 42 6 0.8 27 70.5 (106.5) 150 88.5 44 29.5 28 16.5 75.5 21 pt 2.6r 2.6r 29.4 0.2 59.5 0.2 5.2 42 6 0.8 88 27 70.5 (287) 44 29.5 28 16.5 75.5 pt 2.6r 2.6r 29.4 0.2 59.5 0.2 21 330 1.4 dia. stainless steel wire rod (see note 1) (see note 2) plastic rod 7 dia. (see note 1) (see note 2) stainless steel wire rod 8 dia. max. 1.8 dia. (see note 1) (see note 2) note: 1. the stainless rod can be operated from any direction except the axial direction (i.e., from the top). 2. the optimum operating range of the stainless rod is within 1/3 of the entire length from the top end. spring wire d4a-1 @ 12n, d4a-2 @ 12n plastic rod d4a-1 @ 14n, d4a-2 @ 14n cat whisker d4a-1 @ 15n, d4a-2 @ 15n four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting
92 general-purpose limit switch d4a- @n levers (for roller lever switches) note: no d4a-0003n or d4a-0004n head should be used with the adjustable roller lever or mechanical malfunctioning could result becaus e the total weight of the adjustable roller lever is comparativel y large. use a standard-load head (d4a-0001n or d4a-0002n) instead. 27 0.8 6 42 5.2 70.5 16.5 28 29.5 44 75.5 21 150 (106.5) pt 2.6r 2.6r 29.4 0.2 59.5 0.2 6.5 dia. stainless steel coil spring (see note 1) (see note 2) note: 1. the stainless rod can be operated from any direction except the axial direction (i.e., from the top). 2. the optimum operating range of the stainless rod is within 1/3 of the entire length from the top end. coil spring d4a-1 @ 16n, d4a-2 @ 16n four, m4 (length: 12) screws for head 0 5.2 +0.2 dia. mounting holes two, m5 (length: 20) screws for box 1/2-14npt conduit two, no.10-32unf (depth: 10) screws for back-mounting model spdt double-break dpdt double-break d4a-1 @ 12n d4a-1 @ 14n d4a-1 @ 15n d4a-1 @ 16n d4a-2 @ 12n d4a-2 @ 14n d4a-2 @ 15n d4a-2 @ 16n of max. 0.98 n 1.47 n 0.98 n 1.47 n pt max. 15 (5 )15 (5 )15 (5 )15 (5 ) 7.9 38.1 18 39.4 7.9 38.1 18 9 16.5 19.5 38.1 18 9 7.9 11.5 7.9 38.1 18 9 21 15 33.7 18 9 9 m5 allen bolt 19.1 dia. 7.3 dia. m5 allen bolt 19.1 dia. 7.3 dia. m5 allen bolt 19.1 dia. m5 allen bolt 19.1 dia. 7.3 dia. m5 allen bolt 17.5 dia. 7.3 dia. note: stainless sintered roller (see note) note: stainless sintered roller roller lever d4a-a00 roller lever d4a-a10 roller lever d4a-a20 roller lever d4a-a30 roller lever d4a-b06 stainless sintered roller stainless sintered roller (see note) 7.3 dia. stainless sintered roller
general-purpose limit switch d4a- @n 93 note: a fork lever lock can be used with d4a- @@ 05n models only. 90 17 38.1 (2) 3.6 7.9 38.1 9 90 17 (2) 7.9 3.6 38.1 9 38.1 10.5 160 20 13 7.5 21.2 4.5 113 13 18 21.2 2.5 4.5 14 7.9 m5 allen bolt 19.1 dia. 7.3 dia. 19.1 dia. 7.3 dia. m5 allen bolt 3 dia. 7.3 dia. stainless rod m5 allen bolt 6.4 graduation 19.1 dia. 7.3 dia. m5 allen bolt adjustable roller lever d4a-c00 adjustable rod lever d4a-d00 fork lever lock d4a-e30 fork lever lock d4a-e20 33 to 91 (adjusta- ble) stainless sintered roller 150 max. (adjusta- ble) stainless sintered roller stainless sintered roller stainless sintered roller stainless sintered roller (see note.) (see note.) 90 38.1 (2) 3.6 7.9 9 6.2 38.1 26 22 26 38.1 (2) 3.6 7.9 9 90 22 6.2 38.1 m5 allen bolt 19.1 dia. 7.3 dia. m5 allen bolt 19.1 dia. 7.3 dia. fork lever lock d4a-e10 fork lever lock d4a-e00 stainless sintered roller stainless sintered roller stainless sintered roller stainless sintered roller (see note.) (see note.) m5 allen bolt m5 allen bolt nylon 7.3 dia. 25 max. nylon loop lever d4a-f00
94 general-purpose limit switch d4a- @n precautions refer to the ?precautions for general-purpose limit swit ches (including multiple limit switches, mechanical touch switches, high-precision switches, touch switches, on-site flexible s witches; not including safety switches)? on page 17 . correct use operating environment seal material may deteriorate if a switch is used outdoor or where subject to special cutting oils, solvents, or chemicals. always appraise performance under actual application conditions and set suitable maintenance and replacement periods. install switches where they will not be directly subject to cutting chips, dust, or dirt. the actuator and switch must also be protected from the accumulation of cutting chips or sludge. constantly subjecting a switch to vibration or shock can result in wear, which can lead to contact interference with contacts, opera- tion failure, reduced durability, and other problems. excessive vibration or shock can lead to false contact operation or damage. install switches in locations not subject to shock and vibration and in orientations that will not produce resonance. the switches have physical contacts. using them in environments containing silicon gas will result in the formation of silicon oxide (sio 2 ) due to arc energy. if silicon oxide accumulates on the con- tacts, contact interference can occur. if silicon oil, silicon filling agents, silicon cables, or other silicon products are present near the switch, suppress arcing with cont act protective circuits (surge killers) or remove the source of silicon gas. mounting tightening torque to maintain the high sealing capability of the limit switch, tighten the screws for the head and switch box with the following torques: head (four 12-mm m4 screws): 1.2 to 1.4 nm switch box (two 20-mm m5 screws): 2.4 to 2.7 nm solderless terminals the d4a- @ n with dpdt double-break incorporates solderless terminals. operation the operating methods, cam and dog shapes, operating frequency, and overtravel (ot) have a significant effect on the service life and accuracy of the limit switch. the shape of the cam should be as smooth as possible. a marginal overtravel (ot) value should be set. the ideal value is the rated ot value x 0.7. the actuator should not be remodeled to change the operating position. connectors to satisfy ip67, apply sealing tape to the connector conduit. appropriate outer diameter of cables is 5.5 to 14 dia. use omron?s sc- @ m series. tighten the connectors to a torque of 1.8 to 2.2 nm. maintenance and repair the user must not maintain or repair equipment incorporating any d4a-n model. contact the manufacturer of the equipment for any maintenance or repairs required. tightening torque a loose screw may cause malfunctions. be sure to tighten each screw to the proper tightening torque as shown in the table. model 1/2-14npt conduit d4a-1 @@@ n d4a-2 @@@ n front mounting rear mounting (rear view) not suitable suitable 59.5 0.15 29.4 0.15 0 tw o, 5 . 2 +0.2 dia. holes or m5 tapped holes 59.5 0.15 29.4 0.15 0 two, 6.2 +0.2 dia. holes (recommended mount- ing screws: m6. switch box depth: 10.)
general-purpose limit switch d4a- @n 95 note: when using m5 allen-head bolts, particularly when the head direction has been changed, check the torque of each screw and make sure that the screws are free of foreign substances, and that each screw is tightened to the proper torque. no. type appropriate tightening torque 1 terminal screws (m3.5 screws) (including grounding terminals) 0.78 to 0.88 nm 2 head mounting screws 1.18 to 1.37 nm 3 switch box mounting screws 2.35 to 2.75 nm 4 body mounting screws (see note.) 4.90 to 5.88 nm 5 connectors 1.77 to 2.16 nm 6 actuator mounting screws 2.45 to 2.65 nm
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complete ?terms and conditions of sale? for product purchase and use are on omron?s website at www.omron247.com ? under the ?about us? tab, in the legal matters section. all dimensions shown are in millimeters. to convert millimeters into inches, multiply by 0.03937. to convert grams into ounces, multiply by 0.03527. omron electronics llc 1 commerce drive schaumburg, il 60173 tel: 847.843.7900 for u.s. technical support or other inquiries: 800.556.6766 omron canada, inc. 885 milner avenue toronto, ontario m1b 5v8 tel: 416.286.6465 mexico sales offices mexico, d.f. 555.660.3144 ciudad jurez 656.623.7083 monterrey, n.l. 818.377.4281 quertaro 442.135.4510 brazil sales office sao paulo 55.11.2101.6310 argentina sales office cono sur 54.114.787.1129 chile sales office santiago 562.206.4592 other latin american sales mela@omron.com omron on-line global - www.omron.com usa - www.omron247.com canada - www.omron.ca brazil - www.omron.com.br latin america - www.espanol.omron.com cat. no. x019-e1-07 ............................407 ............ specifications subject to change without notice .............. printed in usa

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