ncoder Instructions Nidec-vtron Makes the Most Reliable ncoders in the World 0. PLSNT VLLY RO INPNN, OHIO -0 TLPHON: () --0 X: () --0 -MIL: tachs@nidec-avtron.com W: www.avtronencoders.com MOL V SMRTTach TM /" HOLLOW SHT SRIPTION The vtron Model V SMRTach II is a severe duty incremental encoder (also known as tachometer or rotary pulse generator). Its output is directly proportional to shaft position (pulse count) or speed (pulse rate). The V operates down to zero speed and can be used for both control and instrumentation applications. When mounted to a machine shaft, the V design eliminates the need for shaft couplings, flanges, or accessory mounting faces. The unit employs a keyless shaft mount to lock the V s rotor to a. diameter shaft. n anti-rotation arm prevents housing rotation while allowing for shaft end float. The V utilizes magnetoresistive sensors. This proven technology is ideal for rugged environments since it is immune to many contaminants that cause optical encoders to fail. These factors make the V ideal for demanding industries like paper, metals, and chemical processing. n vtron V SMRTach II is equipped with one or two V sensor modules. ach module has a two-phase output (, ) 0 out of phase, with complements (, ), ( Quad Output), and a marker pulse with complement (, ) is also present. Output resolution on the V is determined by the sensor only. Unlike older models, any s can be mixed and matched. Selection of the rotor is based only on the shaft mounting requirements (and not ). NOT Special option 00- selects special code definition. nter 0 in code field(s) required. The V removable sensor assembly has a diagnostic package that includes daptive lectronics and a ault-heck output. With this package, the SMRTach II can maintain itself, and provide an alarm if there is a problem before the problem causes un scheduled downtime. PTIV LTRONIS perfect duty cycle consists of a waveform whose high and low conditions are of the same duration (0%/0%). It is possible over time for the duty cycle and edge separation to change due to component drift, temperature changes, or mechanical wear. The daptive lectronics extend the life of the V by constantly monitoring and correcting duty cycle and edge separation over time. ULT-HK If the daptive lectronics reach their adjustment limit, the ault- heck alarm and L will notify the drive and operator of an impending failure. This output can occur before a failure, allowing steps to be taken to replace the unit before it causes unscheduled downtime. ault-heck annunciation is available as an alarm output through the connector or as an integral L. INSTLLTION quipment needed for installation Supplied:. V ncoder. nti-rotation rm Kit. Thread Locker (blue). Synthetic Grease. nti-seize (copper) Not Supplied: -/ lator Nut Wrench (0) -/ Locking Nut Wrench (0) / Wrench / Wrench ial Indicator V PRT NUMRS N VILL S INLUING V SNSORS Model Temp Rating Tether Style V N- -0 to 0 - -0 to 0 H- -0 to 0 + Spare sensors and accessories can be ordered separately. See Table. onnector G- (NorthstarTM Pinout) P- V-, w/insulated - 0 threaded rod Mounted on ncoder ody - standard (OS) T- through shaft G- grounding O- over speed switch pin MS 0 pin MS Other - (M Pinout) - H- (M Pinout) - H - - & clamp - & lex. dapter L- with Right ngle Plug Left Module Right Module onnector Line river Line river Options - -V in/out - -V in/ -V out, hipower - -V in, V out onnector Options K- ondulet R- Twist Lock Mini MS - pin MS (M0) - 0 G- 00 H- 0 - L- 0 N- P- 00-0 - 0 Q- 00 R- S- 00 onnector - Q- " flex cable, with Remote ase V V- 00-0 Y- 0-00 - 00-000 - 0-00 - 0-00 - 000 0- special ' able Twist Lock S- Mini MS - -V in/out - -V in/ -V out, hipower - -V in, V out Other - 0 G- 00 H- 0 - L- 0 N- P- 00-0 - 0 Q- 00 R- S- 00 ' lexible onduit W- Leads only - 0 pin MS w/ins. M- w/ins. N- In lextight T- Terminal box on lextight Y- T w/ins. V- 00-0 Y- 0-00 - 00-000 - 0-00 - 0-00 - 000 0- special Modifications 00- Include analog signal converter (K) 00- Super magnetic shielding xx- Special (see tabel below) SPIL OS O LT RIGHT 0 0 None 0 0 None 0 0 None 0 None 0 None 0 000 None 0 00 None 0 00 None 0 0 None
The hollow shaft V design eliminates the potential for bearing and coupling failures from misalignment, however, excessive housing movement (wobble) may cause undesirable vibrations. The higher the RPM, the more severe the vibration will be from housing movement. In a typical installation a housing movement of 0.00 TIR or less (as measured at the outside diameter of the main encoder body) will not have an adverse effect. MHIN SHT PRPRTION Preparing the machine shaft prior to encoder installation is essential in providing an adequate barrier against environmental contamination. In some cases, a separate stub shaft (. x. long) will be installed on the motor. To prepare the machine shaft that the V is to be installed on, conduct the following procedures (see figures): LTRIL SPIITIONS. Operating Power (Vin). Volts...- V in. urrent...00m, each output, no load. Output ormat. Ø & omp...,,, (differential line driver). Marker.../Rev,. Signal Type...Incremental, Square Wave, 0 +/-0%...uty ycle..irection Sensing...Ø leads Ø for W rotation as viewed...from the back of the tach looking at the...non-drive end of the motor.. Transition Sep...% minimum. requency Range...0 to,000 Hz G....-000 H. Line river Specs...See table I. onnectors...see connector options on page K. INTGRL L INITOR...GRN - Power On, Unit Ok...R - larm On MHNIL. Shaft Inertia... Oz. In. Sec ^. cceleration...000 RPM/Sec. Max.. Speed...000 RPM Max.. Weight...- lbs [ - kg.] NVIRONMNTL Solid cast aluminum stator and rotor ully potted electronics, protected against oil and water spray V-Ring seals provided. Operating Temperature:...See Temp Rating on page. LIN RIVR S lectrical Specifications Units Input Voltage - - - V Nom Output Voltage - - V Line river Output Resistance Typ ohms Maximum Peak urrent 00 000 00 m Maximum verage urrent 0 0 0 m Voh Typ VIN- VIN-, max V out VIN- V Vol Typ 0. 0. 0. V able rive apacity Protection larm Marker Reverse Voltage Short ircuit 000 @ V 00 @ V 00 @ V 000 000 feet yes yes yes yes yes yes Transient yes yes yes (out) larm* L Output voltage equal to input voltage. Open collector, normally off, goes low on alarm, sink 00m max, 0V max Green=power on, Red=larm One per revolution. Pulse width approximately / of a revolution *larm not available on connector option G (Northstar TM compatible pinout) ) Remove from the V the four /-0 UN machine screws which hold the end cap on the cover plate. ) Remove the end cap, O-Ring, and wave spring, noting the location of each to assist in re-assembly. UTION SPNNR WRNHS MUST US URING TH OLLOWING PROURS. Using a substitute can distort the -/ nut and damage the unit. o not try to remove the -/ bearing locknut at any time. This locknut is factory adjusted for optimum V performance. NOT Two spanner wrenches, which are required for V installation, accommodate the -/ and -/ nuts found under the cap. ) Holding the -/ bearing locknut, remove the -/ dia. clamping nut and slide out the internal compression sleeve. ) Verify that the compression sleeve can be installed by hand on the shaft where the unit is to be installed. ile any burrs that obstruct sleeve installation and lightly oil the shaft. ) If a keyway or flat exists on the shaft, provide a sealing medium, or true the shaft back to round using metal putty or equal. ) Return the compression sleeve to the V hub. ) Thread the -/ clamping nut onto the V by hand until resistance is felt. O NOT TIGHTN at this time. NOR INSTLLTION Installing the V and nti-rotation rm: ) The free end of the anti-rotation arm must be secured by the customer to a stationary member such as the floor or machine frame. Refer to nti-rotation rm Mount ing Guidelines on the last page for general requirements. SHT STYL ) ased on the location of the stationary point and the guidelines on page, attach the / thick mount ing board to one of two places on the V. Use two /-0 UN by / long machine screws provided. ) pply anti-seize (copper), provided, to machine shaft. packet of silicone grease is provided to lubricate the following shaft seals: irst, LL V types have an O-Ring inside their hollow shafts at the motor end. In addition, in THRU-SHT types, the clamping LMPING NUT nut has an O-Ring on the inside, plus the outside of the clamping nut requires lubri cation for the radial lip seal per step b. Slide the V onto the machine shaft, mounting the board first. Ideally, the V housing will be / to from the motor or machine housing, but this may vary depend ing on the machine profile and the anti-rotation arm clearance requirements. onsider shaft end float when positioning the V. V
a) OR N-of-SHT PPLITIONS, place the V. to. onto the shaft. The end of the machine shaft must extend completely through the V compression sleeve and be approximately flush with the end of the -/ clamping nut. b) OR THRU SHT PPLITIONS, position the V as required. ) ttach free end of the anti-rotation arm to the / mounting board using the shoulder bolt provided. ) Remove -/ clamping nut and apply liquid thread locker to the threads. (Locktite grade, supplied, should be used in most applications.) ) Replace -/ clamping nut and tighten so the gap is less than or equal to 0.0, as shown in LMPING NUT sketch (approx. -0 ft-lbs.), holding the -/ bearing locknut in place. Spanner wrenches are required for this operation. a) OR N-of-SHT INSTLLTIONS, replace the end cap with the wave spring (load ing spring) against the bearing and the O-ring located in the cap groove. Secure the end cap with the four /-0 UN machine screws pre viously re moved. pply the thread locker to the screws when assembling. b) OR THRU SHT PPLITIONS, prior to replacing the end cap per step a, apply a small amount of silicone grease (provided) to the seal surface on the -/ clamping nut. The radial lip seal in the end cap will seal on this surface. NVIRONMNTL ONSIRTIONS Special attention is to be given to conduit runs, interconnection wiring and NM type enclosure mounting. In those applications where ambient temperatures are controlled within 0 and high humidity/washdown are not present, position the flexible conduit with a slight sag to prevent any condensation from entering the encoder via conduit. In harsh environments, which include temperature extremes, high humidity, equipment washdown or atmosphere contamination, extra care is required. ollow these steps to reduce potential problems: ) lways mount connection points, conduit couplings, junction boxes, etc., lower than actual encoder. ) or washdown areas, shroud or otherwise cover the encoder to prevent direct water spray. o not attach the shroud directly to the encoder. ) Keep conduit outputs and axis of rotation horizontal. ) vtron recommends sealed and/or remote connector styles for these applications. These include options (-, M-N, R-T, W, Y). NTI-ROTTION RM MOUNTING GUILINS The anti-rotation arm stabilizes the encoder and keeps it from rotating as the machine shaft rotates. To get the best performance, minimize generator movement by following these anti-rotation arm mounting guidelines as closely as possible. ) Mount V with conduit entry ports positioned horizontally. ) asten the / thick mounting board to the inboard side of the V in one of the two positions shown. Use the two /-0 UN x / long fasteners. ) Mount anti-rotation arm perpendicular to motor shaft axis of rotation. rm mounting bolts and associated rod bearings should be parallel to motor shaft also (top view). ) Mount anti-rotation arm approx. 0 to a line established between the mounting board mounting hole and shaft centerline (viewed from end). ) Mount V as close as possible to the motor with the mounting board closest to the motor. ) stablish a stationary (static) mounting point for the free end of the anti-rotation arm, using the guidelines above. Use the bolt provided to fasten arm to stationary point. ) The anti-rotation arm is fully threaded and can be adjusted in length. The recommended length is to. WIRING INSTRUTIONS UTION Remove power before wiring. or bidirectional operation of the -phase SMRTach II, proper phasing of the two output channels is important. Phase channel leads Phase channel for clockwise shaft rotation as viewed from the anti-drive or accessory end of the motor (V mounting end). Wiring option G provides a pinout compatible with Northstar encoders, with a cable shield connection on pin 0. Note that this option does not ground the shield; vtron still recommends grounding the shield at the drive end of the cable for all wiring options. V Maintenance and Replacement Part Numbers V Sensor Model Line river onnector Options Modifications V - -V in/out - -V in/-v out Hi-power - -V in, V out - 0 G- 00 H- 0 - L- 0 N- P- 00-0 - 0 Q- 00 R- S- 00 V- 00-0 Y- 0-00 - 00-000 - 0-00 - 0-00 - 000 0-special 000- none 00- Super magnetic shielding xx- Special (see table below) onnector Options SPIL OS onnector G- (NorthstarTM Pinout) P- V-, w/insulated Mounted on ncoder ody pin MS 0 pin MS Other - (M Pinout) - H- (M Pinout) - H - - & clamp - & lex. dapter L- with Right ngle Plug K- ondulet R- Twist Lock Mini MS - pin MS (0) onnector - Q- " flex cable, with Remote ase ' able Twist Lock S- Mini MS Other ' lexible onduit W- Leads only - 0 pin MS w/ins. M- w/ins. N- In lextight T- Terminal box on lextight Y- T w/ins. O LT RIGHT 0 0 None 0 0 None 0 0 None 0 None 0 None 0 000 None 0 00 None 0 00 None 0 0 None V
ORRTIV TION OR PHS RVRSL ) Remove Power. ) xchange wires on cable, either at encoder cable end, or at speed controller end (but not both). a) Single nded Phase Wiring (see wiring diagram) xchange and at the use end of the wires. b) ifferential Phase Wiring (see wiring diagram) xchange either with in the phase pair OR with in the phase pair but NOT both. ) pply Power. ) Verify encoder feedback is correct, using hand rotation of shaft, or jog mode of the speed controller. Interconnecting cables specified in the wire selection chart below are based on typical applications. Refer to the system drawing for specific cable requirements where applicable. Physical properties of cable such as abrasion, temperature, tensile strength, solvents, etc., are dictated by the specific application. General electrical requirements are: stranded copper, thru gauge ( PI options can use -0 WG), each wire pair individually shielded with braid or foil with drain wire, 0.0 u maximum total mutual or direct capacitance, outer sheath insulator,,000 ft. max. See Wire Selection hart below for some suggested cables. NOT When using the industrial connector ( G, P, Q, V, or options), the minimum wire size is 0 gauge, and 0 gauge (only) wire ends must be tinned with solder before connection at the screw terminals. MINTNN GNRL This section describes routine maintenance for the vtron V ncoder. or support, contact vtron s field service department at --0. or emergency after hours service contact us at --. The V SMRTach II circuitry includes a diagnostic package that includes daptive lectronics and a ault-heck output. PTIV LTRONIS perfect duty cycle consists of a waveform whose high and low conditions are of the same duration (0%/0%). It is possible, over time, for duty cycle to change due to component drift, temperature changes, and mechanical wear. The V adaptive electronics extends the life of the V by constantly monitoring and correcting duty cycle over time. ULT-HK fter power-up and the internal rotor position is checked by the sensor, the ault-heck L will turn green. If the adaptive electronics reach their adjustment limit for any reason, the ault-heck alarm and L will notify the drive and operator of an impending failure. The L will turn red if the daptive lectronics reach their adjustment limit. This output occurs before an actual failure, allowing steps to be taken to replace the unit before it causes unscheduled downtime. ault-heck annunciation is available as an alarm output through the connector and as an integral L. TROULSHOOTING: If the drive indicates a loss of encoder/tach fault and the V fault-check L is not illuminated, check the encoder power supply. If power is present, check polarity: one indicator of reversed power supply is that all outputs will be high at the same time. If the drive indicates encoder fault, but the L shows GRN, then check the wiring between the drive and the encoder. If the wiring appears correct and in good shape, test the wiring by replacing the V sensor module. If the new module shows GRN, and the drive still shows encoder loss/tach fault, then the wiring is faulty and should be repaired or replaced. If the alarm output and/or L indicate a fault (R):. Remove an end sensor plate or the second sensor, and use the built-in gauge to check the location of the rotor (see igure ).. Remove the V sensor from the housing. lean the hous ing mounting surface for the V sensor and the V hous ing. If the alarm output and/or L indicate a fault (R) on a prop erly mounted V sensor and the rotor is properly located, replace the V sensor. n oscilloscope can also be used to verify proper output of the V encoder at the encoder connector itself and at the drive/controller cabinet. If the outputs show large variations in the signals at steady speed (jitter or accordion effect, figure ), check rotor position. If the rotor position is correct, the motor or shaft may be highly magnetized. Replace any magnetized shafts with non-magnetic material (stainless/aluminum). onsider replacing the sensors with supershielded models, option -00. WIRING IGRMS OR IRNTIL PPLITIONS N, M, W LK R,, & L PIN OUT P, Q, V, X, S & T G UNTION MON OPRTING VOLTG OR SINGL N PPLITIONS PIN OUT N, M,,, & L P, Q, S & T W V, X, R LU G UNTION OPRTING VOLTG Ø GRN YLLOW G Ø Ø GRN LK Ø MON LU GRY ORNG WHIT ROWN VIOLT H I 0 (OUT) LM N* N* Ø Ø _ MRKR MRKR PLMNT RLY R* LRM* ORNG ROWN VIOLT 0 (OUT) LM N* N* N N N * OR G Pin is not used and Pin 0 is cable shield. MRKR RLY R* LRM* GROUN * OR G Pin is not used and Pin 0 is cable shield. Twisted pair cable required GROUN vtron standard warranty applies. opies available upon request. Specifications subject to change without notice. V
SMRTach II pplication xamples pplies to all Model V ncoders except connector styles,, G, H,, R,. LRM OUTPUT ONNTION vtron SMRTach II encoders provide an alarm signal if maintenance is required under specific circumstances. The L indicator is green when the encoder is properly powered and there are no faults; red indicates alarm on. Green indicates power on, red indicates alarm on. ollowing are application examples provided to help install the alarm output. xample. larm output using (OUT). (OUT) is equal to, the encoder power supply. NOR UNTIONL IGRM OUTPUT S N, K, W,, P, Q, V,, L X, T UNTION LIN RIVR NOT R { LK R GRN YLLOW LU GRY ORNG WHIT ROWN G H I (OUT) MON (ncoder Power) Ø Ø Ø Ø MRKR MRKR PLMNT 0 m MXIMUM Q MMT VIOLT 0 LM GN 00 OHM MIN. Vcc OUT xample. larm Output Using Separate V Power Supply and Relay. - V SOLI STT RLY NOR UNTIONL IGRM OUTPUT S N, K, W,, P, Q, V,, L X, T UNTION MON LIN RIVR NOT R LK R { GRN YLLOW LU GRY ORNG WHIT G H I (ncoder Power) Ø Ø Ø Ø POWR SUPPLY MRKR MRKR PLMNT - V + V ROWN VIOLT 0 (OUT) LM RLY Q MMT GN SINK 00 m MXIMUM, WITHSTN 0 V MXIMUM RRN TO MON PHS PHS igure VRITION > ± % V
. [0.0]. [.] SSML 0 PIN ULKH ONNTOR ONLY ONNTOR W/MTING PLUG. [.] L SHT GROUN. [.]. [.].0 USTOMR SHT [.].0 [] NOMINL.0 [.].-. [.-0.] SHT NGGMNT. [.] OUTLIN IMNSIONS N TILS S P, V & G PLUG-IN INUSTRIL ONNTOR /" ONUIT PTR. [.] /- NPT L LRM INITOR. [00.] S & 0 PIN ONNTOR W/LX ONUIT PTR. [.]. [.0] V NOR. [.]. [0.0].0 [.0] HOL OR Ø./. [./.] SHT L nd ISOLT OUTPUT OVR PLT SINGL OUTPUT ONLY. [.]. [.] T [.0] MIN. [.] S M & N /" LXIL WTRPROO /- UN x / P ONUIT PLS L 0 PIN ULKH ONNTOR W/RIGHT NGL PLUG.00 [.] MIN.0 [.0] MIN. [0.]. [.]. [.] SSML Q RMOT S OR LOR T/TNV MOTORS. [0.] MX. [.0] 0.0 [.] 0. [0.] X WITHOUT PLUG 0. [.]. [.0]. [0.0] W SL LXIL L S SL LXIL L W/0 PIN MINITUR MS ONNTOR [Ø.] Ø0. HOLS /- X. (.) MOUNTING OLT.0 [.0] 0.0 [.]. [.] SSML SUR MOUNT INUSTRIL ONNTOR WITH PLUG 0. [.].0 [0.] TOP VIW.0 [.] /- NPT. [0.].000 [0.] TRMINL LOK K ONUIT OUTLT.0 [.].0 [0.] R 0 PIN MINITUR MS ONNTOR Ø0. [Ø.] HOLS S T & Y TRMINL OX OX IS. (.) P T [.0] MIN /" LXIL ONUIT NTI-ROTTION RM/TTHR INLUS LL HRWR NSSRY OR MOUNTING NOR (0) Tether Option.00 [0.0] MX. LNGTH 0 MOUNTING OR MOTOR. [.] 0. [.] USTL NTI-ROTTION RM.00 [0.] L THRU SHT SIGN ONLY L MOUNTING POSITION INOR VIW SI VIW eatures and specifications subject to change without notice. vtron standard warranty applies. ll dimensions are in inches (mm). NORS 0. PLSNT VLLY R., INPNN, OH, U.S.. () --0 X () --0 www.avtronencoders.com V RV: 0--