8 9 0 1 E . P L E A S A N T VA L L E Y R O A D INDEPENDENCE, OHIO 44131-5508 T E L E P H O N E : ( 1 ) 2 1 6 - 6 4 2 - 4 2 3 4 * FA X : ( 1 ) 2 1 6 - 6 4 2 - 9 7 4 3 E - M A I L : t a c h s @ a v t r o n . c o m * W E B : w w w. a v t r o n . c o m / t a c h s . h t m Pulse Generator Instructions M585 SHAFTachTM DESCRIPTION INSTALLATION CONSIDERATIONS The Avtron Model M585 SHAFTachTM Pulse Generator is a zero-speed incremental rotary transducer. When mounted to a machine shaft, it provides a specific number of electrical pulses per revolution that are proportional to the shaft's rotation. The photoelectric sensing system and electronics are protected by an O-ring sealed, cast aluminum housing. In a conventional pulse generator installation, a flexible coupling is used to compensate for small shaft misalignment and runout of the driving shaft. Often this misalignment and runout reduce the life of the mechanical parts and may cause unwanted modulation of the electrical output signal. The M585 design eliminates the need for shaft couplings, adapter flanges, or accessory mounting faces. The unit employs a keyless shaft mount to lock the M585's rotor to a 1.125" diameter shaft. The hub is designed to maintain concentricity of the rotor and shaft, providing an accurate output signal. An anti-rotation arm prevents rotation while allowing for shaft end float. The available options for the M585, and how they are indicated in the M585 part number, are shown below: MODEL STYLE PPR OPTIONS M585 1 R 1024 B N 15 15 24 12 TO 15 VDC 24 VDC B T MS CONNECTOR WITH NON CONDUCTIVE ADAPTER MS CONNECTOR 90 MS CONNECTOR WIRE LEADS WITH NON CONDUCTIVE ADAPTER WIRE LEADS TERMINAL BOX WITH NON CONDUCTIVE ADAPTER TERMINAL BOX B BIDIRECTIONAL C L M N S PPR (PULSES PER REVOLUTION) R D SINGLE OUTPUT DUAL ISOLATED OUTPUTS (ONE EACH SIDE) 1 2 3 STUB SHAFT THRU SHAFT SHAFT GROUNDING BASIC MODEL NUMBER While misalignment is not a problem with the SHAFTachTM, circular runout of the driving shaft may cause a once per revolution frequency modulation of the output signal. Depending upon the application, this may or may not be acceptable. Typically, a runout of 0.001 TIR or less will not have an adverse effect. ITEMS REQUIRED FOR INSTALLATION The following special items are required for installation: 134" Spanner Wrench - Avtron P/N 484017 for the 134" diameter clamping nut McMaster-Carr P/N 6975A17 212" Spanner Wrench - Avtron P/N 484018 for the 212" diameter bearing locknut McMaster-Carr P/N 6975A19 Thread locking liquid - Locktite 242, supplied Metal Putty (Required for machine shafts with a keyway.) UNPACKING INSTRUCTIONS The M585 is supplied with four main items: the pulse generator with integral specific option package, the anti-rotation arm, the mounting board with attaching hardware, and the V-ring seal. Check and verify all components received as ordered. Check for external damage or missing items. This must be handled by the customer through the shipper. Check nameplate against your requirement to make sure proper style, output, PPR, options, and voltage have been received. INSTALLATION MACHINE SHAFT PREPARATION Preparing the machine shaft prior to Pulse Generator installation is essential in providing an adequate barrier against environmental contamination. In some cases, a separate stub shaft (1.125" D x 4.5" long) will be installed on the motor. To prepare the machine shaft that the M585 is to be installed on, conduct the following procedures (see figures): 1. Remove from the M585 the four 14-20 UNC machine screws which hold the end cap on the cover plate. 2. Remove the end cap, O-Ring, and wave spring, noting the location of each to assist in reassembly. CAUTION SPANNER WRENCHES MUST BE USED DURING THE FOLLOWING PROCEDURES. Using a substitute can distort the 134" nut and damage the unit. Do not try to remove the 212" bearing locknut at any time. This locknut is factory adjusted for optimum M585 performance. NOTE Two spanner wrenches, which are required for M585 installation, accommodate the 134" and 212" nuts found under the cap. 3. Holding the 212" bearing locknut, remove the 134" diameter clamping nut and slide out the internal compression sleeve. 4. Verify that the compression sleeve can be installed by hand on the shaft where the unit is to be installed. File any burrs that obstruct sleeve installation and lightly oil the shaft. 5. If a keyway or flat exists on the shaft, provide a sealing medium or true shaft back to round using metal putty or equal. 6. Return the compression sleeve to the M585 hub. 7. Thread the 134" clamping nut onto the M585 by hand until resistance is felt. DO NOT TIGHTEN AT THIS TIME. 3. Ensure that the machine shaft is lightly oiled. A packet of silicone grease is provided to lubricate the following shaft seals: First, ALL M585 types have an O-ring inside their hollow shafts at the motor end. In addition, in THRU SHAFT types, the clamping nut has an O-ring on the inside, plus the outside of the clamping nut requires lubrication for the radial lip seal per step 8b. Slide the M585 onto the machine shaft, mounting board first. Ideally, the M585 housing will be 12" to 1" from the motor or machine housing, but this may vary depending on the machine profile and the anti-rotation arm clearance requirements. Consider shaft end float when positioning the M585. 4a. FOR STUB SHAFT APPLICATIONS, place the M585 314" to 4" onto the shaft. The end of the machine shaft must extend completely through the M585 compression sleeve and be approximately flush with the end of the 134" clamping nut. 4b. FOR THRU SHAFT APPLICATIONS, position the M585 as required. 5. Attach free end of the Anti-Rotation Arm to the 1 4" mounting board using the shoulder bolt provided. 6. Remove 134" clamping nut and apply liquid thread locker to the threads. (Locktite grade 242, supplied, should be used in most applications.) NOTE Where thread locker has been used, additional force is required for M585 removal. 7. Replace 134" clamping nut and tighten so the gap is less than or equal to 0.09", as shown in CLAMPING NUT sketch (approx. 15-20 ft-lbs), holding the 212" bearing locknut in place. PULSE GENERATOR INSTALLATION Installing the M585 and Anti-Rotation Arm: 1. 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 "AntiRotation Arm Mounting Guidelines" on the last page for general requirements. 2. Based on the location of the stationary point and the guidelines on page 4, attach the 14" thick mounting board provided to one of five places on the M585. Use two 14-20 UNC by 3 4" long machine screws provided. Spanner wrenches are required for this operation. 8a. FOR STUB SHAFT INSTALLATIONS, replace the end cap with the wave spring (loading spring) against the bearing and the O-ring located in the cap groove. Secure the end cap with the four 14-20 UNC machine screws previously removed. Apply the supplied grade 242 Locktite to the screws when assembling. 8b. FOR THRU SHAFT APPLICATIONS, prior to replacing the end cap per step 8a, apply a small amount of silicone grease (provided) to the seal surface on the 134" clamping nut. The radial lip seal in the end cap will seal on this surface. WIRING CONSIDERATIONS WIRING DIAGRAM FOR SINGLE ENDED APPLICATIONS For bidirectional operation of the SHAFTachTM, proper phasing of the two output channels is important. Phase A channel leads phase B channel for clockwise rotation as viewed from the end-cap (anti-drive) end of the generator. OUTPUT OPTIONS C N T M585 Interconnecting cables specified in the wiring diagrams are based on typical applications. Refer to the system drawing for specific cable requirements where applicable. FUNCTION FOR SINGLE ENDED APPLICATIONS OPERATING VOLTAGE RED B +V BLUE E B 0B GREEN D A 0A BLACK A COM COMMON CABLE BELDEN #8723 OR EQUIVALENT GROUND FOR DIFFERENTIAL APPLICATIONS Physical properties of cable such as abrasion, temperature, tensile strength, solvents, etc., are dictated by the specific application. General electrical requirements are: stranded copper, 22 thru 16 gauge, braid or foil with drain wire, 0.05 MF maximum total mutual or direct capacitance, outer sheath insulator, 1,000 ft. max. FOR DIFFERENTIAL APPLICATIONS COMMON BLACK A COM RED B +V GREEN D A 0A YELLOW G A 0A BLUE E B 0B GRAY H B M585 OPERATING VOLTAGE 0B CABLE BELDEN #9773 OR EQUIVALENT GROUND M585WD.MAC NOTE: 5' FLEXIBLE CONDUIT STANDARD FOR ALL OUTPUT OPTIONS ENVIRONMENTAL CONSIDERATIONS Special attention is to be given to conduit runs, interconnection wiring and NEMA type enclosure mounting. In those applications where ambient temperatures are controlled within 40F and high humidity/washdown are not present, position the flexible conduit with a slight sag to prevent any condensation from entering the SHAFTach via conduit. In harsh environments, which include temperature extremes, high humidity, equipment washdown or atmosphere contamination, extra care is required for interconnection. Follow these steps to reduce potential problems: 1. Always mount connection points, conduit couplings, junction boxes, etc., lower than actual generator. 2. Venting of generator is beneficial. One method is to take conduit run outside of hostile area where practical. (Applies to conduit installations only.) 3. For washdown areas, shroud or otherwise cover the SHAFTach to prevent direct water spray. Do not attach the shroud directly to the generator. 4. Keep conduit outputs and axis of rotation horizontal. 5. Purging of SHAFTach should be reviewed with Avtron. M585 SPECIFICATIONS 15 V OPERATING VOLTAGE 24 V OPERATING VOLTAGE OPERATING POWER (EACH OUTPUT) .................................... 12 TO 15 VDC AT APPROX. 70 mA (NO LOAD) 24 VDC AT APPROX. 70 mA (NO LOAD) OUTPUT SIGNAL........................................................................ TWO CHANNELS IN QUADRATURE (2-PHASE, BIDIRECTIONAL) TWO CHANNELS IN QUADRATURE (2-PHASE, BIDIRECTIONAL) PULSES PER REVOLUTION ................................................. 240, 360, 600, 1024, 1200, 2048 PPR STANDARD -- OTHERS AVAILABLE UPON REQUEST 240, 360, 600, 1024, 1200, 2048 PPR STANDARD -- OTHERS AVAILABLE UPON REQUEST WAVE SHAPE......................................................................... SQUARE WAVE SQUARE WAVE VOLTAGE OUTPUT ................................................................ HIGH: HIGH: LOW: SUPPLY VOLTAGE MINUS 1 VOLT (NO LOAD) 120 OHMS PULL-UP 1.0 VOLT MAX. 50mA SINK LOW: SUPPLY VOLTAGE MINUS 1 VOLT (NO LOAD) 330 OHMS PULL-UP 1.0 VOLT MAX. 50mA SINK OUTPUT PROTECTION ......................................................... SHORT CIRCUIT PROTECTION TO COMMON SHORT CIRCUIT PROTECTION TO COMMON FREQUENCY .......................................................................... 50 KHz MAX. 50 KHz MAX. MECHANICAL SHAFT DIAMETER REQUIREMENTS................................... 1.125 +.000/-.003 INCHES SPEED RANGE ...................................................................... 0 TO 3600 RPM STARTING TORQUE .............................................................. 3.9 OZ.-IN. (TYP.) 2 HUB INERTIA. ........................................................................ 0.5 OZ.-IN.-SEC ACCELERATION (MAX.) ........................................................ 3000 RPM/SEC 1.125 +.000/-.003 INCHES 0 TO 3600 RPM 3.9 OZ.-IN. (TYP.) 0.5 OZ.-IN.-SEC2 3000 RPM/SEC 0 0 OPERATING TEMPERATURE .................................................... 0 TO 160 F AMBIENT 00 TO 1600 F AMBIENT WEIGHT ....................................................................................... 15 LBS. 15 LBS. 2. Mount Anti-Rotation Arm perpendicular to motor shaft axis of rotation. Arm mounting bolts and associated rod bearings should be parallel to motor shaft also. (Viewed from above.) ANTI-ROTATION ARM MOUNTING GUIDELINES The Anti-Rotation Arm stabilizes the SHAFTach and keeps it from rotating as the motor shaft rotates. To mount the Anti-Rotation Arm, use these guidelines: 1. Mount SHAFTach positioned horizontally. with conduit entry 3. Mount Anti-Rotation Arm 90 to a line established between mounting board, mounting hole, and shaft centerline. (Viewed from end.) ports 4. Mount SHAFTach as close as possible to the motor with the mounting board closest to the motor. TOP VIEW ADJUSTABLE ANTI-ROTATION ARM 5. Establish a stationary (static) mounting point for the free end of the Anti-Rotation Arm, using the guidelines above. Use the shoulder bolt provided to fasten arm to stationary point. ROD END STATIONARY (STATIC) MOUNTING POINT OF ANTI-ROTATION ARM AXIS OF MOTOR SHAFT 90 5/16-24 SHOULDER BOLT BOTH ENDS 6. The Anti-Rotation Arm can be adjusted in length. The recommended length is 8 to 12 inches. MOTOR MOUNTING BOARD 12.00 MAX 1.56 REF 2.75 REF 5.12 90 OPTIONAL MOUNTING POSITIONS M585TORQ.MAC SHAFTach M585 V-RING SEAL END (INBOARD) VIEW 5FT OF FLEXIBLE WATERPROOF CONDUIT BETWEEN PULSE GEN. AND JUNCTION BOX. 2.25 9.25 4.62 0.312 DIA. 4 HOLES 0.38 4.30 4.75 MIN 30 OPTION "L" 90 MS CONNECTOR 5.50 4.75 0.42 MAX 45 8.50 DIA 60 1.12 2.00 5FT 7.00 3.00 4.25 SQ 1/4-20 UNC-2B 6 HOLES SPACED AS SHOWN ON A 7.75 DIA 3.13 1.28 2.00 0.09 OPTION "T" TERMINAL BOX OPTION "S" TERMINAL BOX WITH NON-METALLIC ADAPTER 1.094 DIA HOLE FOR 3/4" CONDUIT ENTRY FLEXIBLE METAL CONDUIT HOLE FOR SHAFT OF 1.125 DIA MAX MS3101F18-1P MS3106F18-1S OPTION "N" WIRE LEADS OPTION "M" WIRE LEADS WITH NON-METALLIC ADAPTER OPTION "C" MS CONNECTOR OPTION "B" MS CONNECTOR WITH NON-METALLIC ADAPTER M585OL.MAC AVTRON STANDARD WARRANTY APPLIES * FEATURES SUBJECT TO CHANGE WITHOUT NOTICE * ALL DIMENSIONS ARE IN INCHES AND ARE APPROXIMATE REV. 10-12-01 8901 E. PLEASANT VALLEY RD., INDEPENDENCE, OH 44131, U.S.A. * (1) 216-642-4234 * FAX (1) 216-642-9743 * www.avtron.com/tachs.htm