models zod and zoh - thru-bore rotary pulse generators (zoh replaces the model rpgo) bulletin no. zod/zoh-a drawing no. lp0735 released 03/10 tel +1 (717) 767-6511 fax +1 (717) 764-0839 www.redlion.net general description the model zod and zoh are thru-bore encoders. the zod has a bore of 0.25" (6.35 mm) and the zoh is a 0.375" (9.5 mm) bore. these units are ideal for applications requiring a miniature, high precision, low cost encoder, designed with all metal construction for years of trouble-free operation. the encoders have a flexible butterfly mount and blind hollow shaft. these encoders use two set screws that are 90 apart to clamp the encoder's hub to the motor shaft. the npn open collector outputs are each current limited to 100 ma. the outputs are standard quadrature with index, and are available in resolutions up to 2500 pulses per shaft revolution. the quadrature separation is typically 90 electrical degrees. output a leads output b for clockwise rotation of the encoder shaft. specifications electrical specifications 1. supply voltage: 4.75 to 28 vdc, 100 ma max. with no output load 2. 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. 3. max. frequency : 200 khz 4. index: npn open collector transistor, v oh = 30 vdc max.; 20 ma max. current. once per revolution centered over output channel a. index is a positive going pulse. 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 6. symmetry : 180 (18) electrical 7. quad phasing : 90 (22.5) electrical 8. min edge sep : 67.5 electrical 9. accuracy : within 0.017 mechanical or 1 arc minute from true position (for ppr>189) mechanical specifications 1. maximum mechanical speed : 8000 rpm 2. bore size : zod: 0.25" (6.35 mm) zoh: 0.375" (9.5 mm) 3. bore tolerance : -0.0000"/+0.0006" 4. user shaft tolerances : radial runout: 0.008" max axial endplay: +/- 0.030" max 5. starting torque : 0.6 oz-in (4.24 n-mm) 6. moment of inertia : 6.7 x 10 -5 oz-in-sec 2 (4.8 gm-cm 2 ) 7. electrical connections : cable is 36" (914.4 mm) in length with 24 awg conductors w/shield. 8. mounting : 1.811 (46 mm) slotted flex mount 9. weight : 3 oz. (85.0 g) environmental specifications 1. operating temperature : -20c to 85c 2. storage temperature : -25c to +85c 3. humidity : 98% rh non-condensing 4. vibration : 10 g @ 58 to 500 hz 5. shock : 80 g @ 11 msec duration 6. sealing : ip64 open collector output wiring the zod and zoh encoders have open collector outputs. an open collector output brings the uncommitted collector 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 outputs 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. ordering information +vdc function red wire color common black data a white data b green index z orange m3 or 6-32 max. screw size m3 set screws 2x 90 rotational adjustment 30.00 1.00 (25.4) 0.07 (1.8) 0.80 (20.3) blind bore depth ?1.811 (46.0) ?2.16 (54.9) cable length 36 (914.4) standard dimensions in inches (mm) 0.25" thru-bore model no. thru-bore rotary pulse generators 60 zod0060a 0.375" thru-bore zoh0060a 100 zod0100a zoh0100a description 500 ZOD0500A zoh0500a ppr part number 600 zod0600a zoh0600a zod & zoh 1000 zod1000a zoh1000a 1200 zod1200a zoh1200a 2000 zod2000a zoh2000a 2500 zod2500a zoh2500a only factory stocked part numbers are listed. consult factory for part number and availability of other ppr and output configurations.
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