? inside us: +1 (877) 432-9908 bulletin no. zmd-c outside us: +1 (717) 767-6511 drawing no. lp0733 www.redlion.net released 2017-05-02 -1- model ? zmd ?\? miniature ? length ? sensor ? (relplaces ? model ? lsm) description ? designed for light to medium duty sensing applications, the miniature length sensor, model zmd, is compact in size and easy to use. it features a built-in spring-loaded tors ion arm that provides a simple to adjust torsion load, allowing the unit to be mounted in almost any orientation, including upside down. using a 6" or 200 mm wheel, the zmd can be used on almost any surface, while operating at speeds up to 3000 feet per minute. the housing is a dur able, conductive composite material that will eliminate static build up. whether you need to measure speed, position, or distances, the model zm d is the ideal solution. for other pulse rates and/or wiring configurati ons, contact the factory for further details. open collector output wiring the zmd sensors have open collector outputs. an open collector output brings the uncommitted collec tor of the encoder switching device to the external world. because the collector element is not associated with the sensor supply voltage, the sensor output collector may be ?pulled up? to external voltages different than the encoder supply voltage (30 vdc maximum). npn open collector out puts are current sinking devices. an output signal will not be generated unless a pull-up resistor is connected from the open-collector to the positive side of an external supply. the same supply can be used for powering the unit and for the pull-up resistor. safety ? summary all safety related regulations, local codes and instructions that appear in the literature or on equipment must be observed to ensure personal safety and to prevent damage to either the instrument or equipment connected to it. if equipment is used in a manner not specified by the manufacturer, the protection prov ided by the equipment may be impaired. specifications electrical specifications 1. input voltage : 4.75 to 28 vdc max for temperatures up to 85 oc; 4.75 to 24 vdc for temperatures between 85 oc to 100 oc, reverse polarity protected. 2. input current : 100 ma max (65 ma typical) with no output load 3. outputs : npn open collector transistor, v oh = 30 vdc max.; 20 ma max. current. incremental - two square waves in quadrature with a leading b for clockwise rotation, as viewed from the wheel side. 4. max frequency : 200 khz standard 5. noise immunity : tested to bs en61000-6-2; bs en50081-2; bs en61000-4-2; bs en61000-4-3; bs en61000-4-6, bs en500811 (tested with 2 meter cable) 6. symmetry : 180o (18o) electrical 7. quad. phasing : 90o (22.5o) electrical 8. min. edge sep : 67.5o electrical 9. accuracy : within 0.017o mechanical or 1 arc-minute from true position. (for ppr>189) mechanical specifications 1. maximum mechanical speed : 6000 rpm. higher speeds may be achievable, contact the factory. 2. shaft material : stainless steel 3. shaft tolerance : +0.0000/-0.0004" (+0.000/-0.010 mm) 4. radial shaft load : 5 lb. max. rated load of 2 to 3 lb for bearing life of 1.2 x 10 10 revolutions 5. axial shaft load : 5 lb. max. rated load of 2 to 3 lb for bearing life of 1.2 x 10 10 revolutions 6. starting torque : 0.05 oz-in 7. electrical connection : 2 meter cable, (foil and braid shield, 24 awg conductors). drain wire in ternally connected to case. warning - explosion hazard - do not d equipment unless power has been sw or area is known to be non-hazardou caution: risk of danger. read complete instructions prior to installation and operation of the unit. function wire color +vdc red com black awhite bgreen shield bare ? compact size ? quadrature output ? built-in spring tensioning ? vertical, horizontal, or upside-down mounting ? reduces installation time ? various measuring wheels available dimensions ? in ? inches ? (mm) 6.000 circumference (ordered separately) metric wheel available "l" side ?0.2498 (?6.345) 1/4 - 20 threads shaft can be reversed for mounting from either side "r" side cable length 2 meter standard torque adjustment under rubber cap ? 1.71 (43.4) 1.00 (25.3) 1.3 (33) typical 0.740 (18.8) 0.100 (2.54) "r" side 0.60 (15.2) 0.50 (12.6) 0.24 (6) "l" side 3.13 (79.6) 2.500 (63.5) tolerance: x.xxx" = 0.005" x.xx" = 0.01"
? -2- bulletin no. zmd-c released 2017-05-02 drawing no. lp0733 8. housing : stainless steel fibers in a high temperature nylon composite 9. mounting : pivot shaft can be mounted from either side of the housing and is field reversible. 10. weight : 5 oz. typical (141.7 g) environmental specifications 1. operating temperature : -20 c to 85 c 2. storage temperature : -25 c to +85 c 3. humidity : 98% rh non-condensing 4. vibration : 10 g @ 58 to 500 hz 5. shock : 80 g @ 11 msec duration 6. sealing : ip50 ordering ? information only factory stocked part numbers are listed. consult factory for part number and availability of other ppr and output configurations. accessories model no. description ppr part number zmd miniature length sensor with quadrature output 250 zmd0250b 500 zmd0500b 1000 zmd1000b 2000 ZMD2000B 2500 zmd2500b description part number mounting bracket rpgmb002 urethane (6" circumference) wheel wi0006of knurled (6" circumference) wheel wi0006ok urethane (200 mm circumference) wheel wm0200of knurled (200 mm circumference) wheel wm0200ok do not dispose of unit in trash - recycle 2.00 1.00 1.75 r.14 1.00 .25 1.81 r.093 (44.45) (50.8) (25.4) (6.35) (44.45) (25.4) 1.75 1.25 (31.75) .75 (19.05) .125 (3.175) (45.97) dimensions ? in ? inches ? (mm) mounting ? bracket this accessory angle mounting bracket allows for a variety of mounting positions and makes installation of the zmd even easier. limited warranty (a) red lion controls inc. (the ?company?) warrants that all products shall be free from defects in material and workmanship under normal use for the period of time prov ided in ?statement of warranty periods? (available at www.redlion.net) current at the time of shipm ent of the products (t he ?warranty period?). except for the above- stated warranty, company makes no warranty whatsoever with respect to the products, including any (a) warranty of me rchantability; (b) warranty of fitness for a particular purpose; or (c) warranty agains t infringement of intellectual property rights of a third party; whether express or im plied by law, course of dealing, course of performance, usage of trade or otherwise. customer shall be responsible for determining that a product is suitable for customer?s use and that such use complies with any applicable local, state or federal law. (b) the company shall not be liable for a breach of the warranty set forth in paragraph (a) if (i) the defect is a result of customer?s failure to store, install, commission or maintain the product according to specifications; (ii) customer alters or repairs such product without the prior written consent of company. (c) subject to paragraph (b), with respect to any such pr oduct during the warranty period, company shall, in its sole discretion, either (i) repair or replace the product; or (ii) credit or refund the price of product provided that, if company so requests, customer shall, at com pany?s expense, return such product to company. (d) the remedies set forth in paragraph (c) s hall be the customer?s sole and exclusive remedy and company?s entire liability for any breach of th e limited warranty set forth in paragraph (a).
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