Murphy Selectronic DT9803 User's Manual
Contents
1. 2 Insert a small blade screwdriver inside the arrow slot Turn the screwdriver until the arrow pointer is facing the number you choose EXAMPLE You want the overspeed to trip at 1850 RPM Figure 8 1 Rotate the X 1000 arrow to the 1 2 Rotate the X 100 arrow to the 8 3 Rotate the X 10 arrow to the five 5 X 1000 X 100 Figure 8 M Overspeed switch Fae set at 1850 RPM DT9804 AND DT9806 TROUBLESHOOTING If the DT9804 or DT9806 tachometer reading is incorrect or erratic follow the steps below in order until the devices read properly 1 Check for proper voltage for your ignition system 90 150 2 Check all grounds be sure they are good and tight 3 Separate ignition wires from primary coil wires 4 Check switches for correct settings according to the number of engine cylinders Where the ignition system has two storage capacitors the tachometer must be set for half the number of engine cylinders DO NOT USE A PENCIL TO PUSH SWITCHES 5 Check reading on 110 VAC 60 Hz with all switches open or on 0 The display should read all 0 s Also refer to the calibration chart in step 9 6 The shutdown lead must be separated at least 12 in 305 mm from the high tension spark plug leads The best practice is to run the shutdown lead from the junction box to the panel in a separate conduit 7 The common ground for the capacitor discharge ignition system coils must be grounded to the engine block pr2. 4 10 87 2 7 8 10 57 2 3 5 6 11 the DT9803 and DT9805 find the number of teeth for your gear in 146 1 3 6 8 9 116 5 10 86 2 4 7 8 10 56 1 4 7 11 hrat 145 4 6 8 9 115 2 3 5 10 85 1 2 5 7 8 10 55 1 3 4 5 7 11 Table 2 Close the series of calibration switches listed next to the 443 1 24 6 8 9 iaa 4a A T E P TEES number of sear teeth 143 2 3 4 6 8 9 113 6 10 83 3 6 7 8 10 53 1 2 3 8 11 8 142 1 5 6 8 9 112 1 3 6 10 82 3 4 6 7 8 10 52 2 3 4 5 8 11 TOENI 141 3 5 6 8 9 111 2 4 6 10 81 1 2 3 5 6 7 8 10 51 1 3 5 6 8 11 Calibration 12 3456 7 89101112 Pushed 140 1 2 3 5 6 8 9 110 1 2 3 4 6 10 80 9 10 50 1 3 4 7 8 11 Switches __ o o o o fo 0 elfe e o oj o ON 139 2 4 5 6 8 9 109 3 5 6 10 79 2 4 9 10 49 2 3 6 7 8 11 ia a a a a aa aa ee closed 138 1 3 4 5 6 8 9 108 1 4 5 6 10 78 3 5 9 10 48 9 11 Oot apEH om 137 7 8 9 107 2 3 4 5 6 10 77 2 3 4 5 9 10 47 1 2 4 5 9 11 Q Side View 136 3 7 8 9 106 3 7 10 76 4 6 9 10 46 4 5 6 9 11 135 1 2 3 7 8 9 105 1 4 7 10 75 1 2 5 6 9 10 45 1 3 5 7 9 11 DO NOT USE A PENCIL TO PUSH SWITCHES 134 1 2 4 7 8 9 104 1 2 3 4 7 10 74 2 3 4 5 6 9 10 44 3 5 6 7 9 11 a 133 2 3 4 7 8 9 103 1 3 5 7 10 73 2 4 7 9 10 43 1 3 5 8 9 11 3 To set the calibration code on the DT9804 and DT9806 refer to Table 3 tere eer ie LE E eee Find the line that matches your engine s cylinders and cycles and set the ago Lea 109 panes p eee n 1 aN eas DT9804 DT9806 according to the switches marked ON 128 6 7 8 9 98 1 2 5 6
3. 7 10 68 4 8 9 10 38 1 5 7 10 11 a 127 3 6 7 8 9 97 4 5 6 7 10 67 1 3 5 8 9 10 37 1 3 4 5 6 7 10 11 NOTE if the ignition system has two energy storage capacitors count only 126 4 6 7 8 9 96 8 1 66 1 2 6 8 9 10 36 1 2 4 6 8 10 11 ees 125 3 4 6 7 8 9 95 1 2 3 8 10 65 1 5 6 8 9 10 35 1 2 4 5 7 8 10 11 half the actual number of engine cylinders for the calibration code 124 1 2 3 4 6 7 8 9 94 2 3 4 8 10 64 7 8 9 10 34 1 2 3 4 9 10 11 123 3 5 6 7 8 9 93 1 3 5 8 10 63 1 2 3 4 7 8 9 10 33 2 3 7 9 10 11 P 122 4 5 6 7 8 9 92 3 4 5 8 10 62 1 2 3 4 5 7 8 9 10 32 8 9 10 11 Table 2 DT9803 and DT9805 Calibration Chart 121 3 4 5 6 7 8 9 91 1 2 6 8 10 61 1 2 3 4 6 7 8 9 10 Number Number Number Number of Gear Close Switch of Gear Close Switch of Gear Close Switch of Gear Close Switch Table 3 Calibration Code for DT9804 and DT9806 Teeth Number s Teeth Number s Teeth Number s Teeth Number s 250 2 3 5 6 7 8 225 1 5 9 200 1 2 5 6 9 175 1 2 3 4 5 7 9 Number of Aue ao Calibration Sireh Coie ae 249 1 2 3 5 6 7 8 224 2 5 9 199 1 3 5 6 9 174 1 6 7 9 ylinders ycles 248 4 5 6 7 8 223 3 5 9 198 2 3 5 6 9 173 1 2 6 7 9 I 7 ONION 247 1 4 5 6 7 8 222 1 3 5 9 197 4 5 6 9 172 1 3 6 7 9 246 2 4 5 6 7 8 221 2 3 5 9 196 1 4 5 6 9 171 1 2 3 6 7 9 2 2 ON ON 245 1 2 4 5 6 7 8 220 2 3 5 9 195 1 2 4 5 6 9 170 1 4 6 7 9 2 4 ONION 244 3 4 5 6 7 8 219 1 4 5 9 194 1 3 4 5 6 9 169 3 4 6 7 9 F ON 243 1 3 4 5 6 7 8 218 2 4 5 9 193 2 3 4 5 6 9 168 2 3 4 6 7 9 2 242 2 3 4 5 6 7 8
4. a CD ignition The TACHSWICH models DT9805 and DT9806 combine a digital tachometer and overspeed switch The DT9805 is powered by a magnetic pickup and the DT9806 is powered by a CD ignition PRPS W UATE MPN Class I Division 2 Group D Specifications Input Signal Source DT9803 18 to 112 volts peak to peak or 3 5 to 40 Vrms DT9805 18 to 112 volts peak to peak or 7 to 40 Vrms DT9804 and DT9806 90 to 400 VDC CD ignition Temperature Range 4 to 158 F 20 to 70 C Accuracy 1 RPM Frequency Range DT9803 and DT9805 1 to 15 KHz DT9804 and DT9806 3 to 666 Hz Overspeed Switch Rating DT9805 and DT9806 only SCR output 5 A 400 VDC Class I Div 2 Group D Hazardous Locations Models DT9803 and DT9805 magnetic pickup powered 18 to 112 Vpp input Models DT9804 and DT9806 used with CD ignition Contact Murphy for details The equipment must be installed in a suitable enclosure accepted by local authorities MOUNTING 1 Before installing be sure there will be enough clearance to access the calibration rocker switches and overspeed switches from the back of the panel 2 Drill mounting holes according to the dimensions below Mounting Hole Dimensions 4 in 102mm H 2 in 51 mm Tachometer 3 1 8 in 79 mm diameter on in 6 mm diameter 4 places Gasket 3 Be sure the gasket is in place on the back of the tachometer before installing Insert the tachometer f
5. 217 1 2 4 5 9 192 7 9 167 5 6 7 9 4 2 ON ON 241 1 2 3 4 5 6 7 8 216 3 4 5 9 191 2 7 9 166 2 5 6 7 9 240 9 215 2 3 4 5 9 190 1 2 7 9 165 3 5 6 7 9 sd ONION 239 1 9 214 1 2 3 4 5 9 189 1 3 7 9 164 1 2 3 5 6 7 9 5 2 ON ON ON ON 238 2 9 213 6 9 188 1 2 3 7 9 163 1 4 5 6 7 9 5 4 Jon Jon on Jon 237 1 2 9 212 2 6 9 187 1 4 7 9 162 1 2 4 5 6 7 9 6 7 ON 236 3 9 211 1 2 6 9 186 2 4 7 9 161 2 3 4 5 6 7 9 235 1 3 9 210 1 3 6 9 185 3 4 7 9 160 8 9 6 4 ON 234 1 2 3 9 209 2 3 6 9 184 2 3 4 7 9 159 2 8 9 8 2 ONION 233 4 9 208 1 2 3 6 9 183 5 7 9 158 1 3 8 9 232 1 4 9 207 1 4 6 9 182 2 5 7 9 157 1 2 3 8 9 8 4 ON ON 231 2 4 9 206 2 4 6 9 181 1 2 5 7 9 156 2 4 8 9 10 4 ON ON ON ON 230 1 2 4 9 205 3 4 6 9 180 1 3 5 7 9 155 3 4 8 9 12 7 ON 229 3 4 9 204 1 3 4 6 9 179 1 2 3 5 7 9 154 1 2 3 4 8 9 228 1 3 4 9 203 1 2 3 4 6 9 178 1 4 5 7 9 153 1 5 8 9 16 4 ON ON 3 a pee oh ae w are 1 EEE Consult Murphy for Cylinder and Cycle combinations not listed on this table SETTING OVERSPEED SET POINTS DT9805 AND DT9806 The overspeed set point switches are available on the DT9805 and DT9806 only The overspeed set point can be set within 5 RPM over a range of 0010 to 9990 RPM Setting of the overspeed set points is made by properly adjusting of three rotary switches Each switch can be adjusted in increments of ten To set the switches perform the following 1 Locate the three rotary switches on the back of the unit Figure 8
6. 5 fax 61 3 9358 5558 E Murphy de M xico S A de C V Blvd Antonio Rocha Cordero 300 Fracci n del Aguaje San Luis Potosi S L P M xico 78384 tel 52 48 206264 fax 52 48 206336 e mail murmexs sanluis podernet com mx E Murphy Switch of California P O Box 900788 Palmdale California 93590 USA tel 805 272 4700 fax 805 947 7570 e mail sales murphyswitch com E Frank W Murphy France tel 33 1 30 762626 fax 33 1 30 763989 056499
7. SELECTRONIC Digital Tachometer TACHSWICH Installation Instructions DT9800 Series DT 8605N Revised 07 97 Section 20 00 02 0180 gt mur phy Please read the following information before installing A visual inspection of this product for damage during shipping is recommended before mounting It is your responsibility to have a qualified person install this unit and make sure installation conforms to NEC and local codes GENERAL INFORMATION ZA b a EEEE WARNING LD aD aw a T BEFORE BEGINNING INSTALLATION OF THIS MURPHY PRODUCT V Disconnect all electrical power to the machine V Make sure the machine cannot operate during installation V Follow all safety warnings of the machine manufacturer V Read and follow all installation instructions Description The Digital SELECTRONIC DT9800 series features a tachometer only and tachometer with built in overspeed switch These tachometers are highly accurate and dependable due to digital solid state electronics and a quartz crystal time base The surface mount enclosure makes it easy to install Tachometer power and RPM data are supplied by a magnetic pickup or capacitor discharge CD ignition depending on model chosen The RPM data is converted and displayed on a four digit easy to read liquid crystal display LCD The LCD displays up to 9999 RPM The DT9803 and DT9804 are tachometer only models The DT9803 is powered by a magnetic pickup The DT9804 is powered by
8. eferably as close to each coil as possible 8 If the Murphy adaptor package is used make sure the tach is connected to the input ALT 1 ALT 2 not the output 9 Calibration Check Hook 110 VAC 60 Hz hot to the input 90 150 and the neutral to the negative input These readings are 1 RPM Dip Switches On Reading 2 4 5 60 1 5 9 639 3 6 10 1284 2 8 11 2704 1 7 12 4951 Warranty A two year limited warranty on materials and workmanship is given with this Murphy product Details are available on request and are packed with each unit In order to consistently bring you the highest quality full featured products we reserve the right to change our specifications and designs at any time Ce w Vgmurp Since 1939 phy E Frank W Murphy Manufacturer P O Box 470248 Tulsa Oklahoma 74147 USA tel 918 627 3550 fax 918 664 6146 e mail fwmurphy ionet net E Frank W Murphy Southern Division P O Box 1819 Rosenberg Texas 77471 USA tel 281 342 0297 fax 281 341 6006 e mail murphysd intertex net Printed in U S A E Frank W Murphy Ltd Church Rd Laverstock Salisbury SP1 1QZ U K tel 44 1722 410055 fax 44 1722 410088 tlx 477088 e mail sales fwmurphy co uk E Frank W Murphy Pte Ltd 26 Siglap Drive Republic of Singapore 456153 tel 65 241 3166 fax 65 241 8382 e mail fwmsales fwmurphy com sg E Murphek Pty Ltd 1620 Hume Highway Campbellfield Vic 3061 Australia tel 61 3 9358 555
9. eries Polarity Voltage Use Figure Altronic I III amp V Negative 120 6 Altronic II Positive 350 7 Bendix S 1800 BLAR Negative 250 6 Bendix Side winder Positive 300 7 Fairbanks Morse SCSA Positive 180 T nae yaa Negative 225 6 American Bosch Magtronic Negative 165 6 DT9805 AND DT9806 TYPICAL WIRING WARNING PERFORM THE WIRING INSTALLATION WITH THE POWER SOURCE OFF DO NOT ROUTE TACHOMETER LEADS WITH PRIMARY IGNITION WIRING DT9805 1 Connect the magnetic pickup as shown in Figure 3 2 Connect the overspeed switch wiring as shown Figures 3 and 4 Observe the polarity of the overspeed switch The positive terminal must be connected to the positive side of the circuit as shown 3 If connecting to a Murphy LCDT annunciator refer to Figure 5 See General Catalog for more information on the LCDT Figure 4 DT9805 typical wiring for positive ground ignition Connected to Corresponding Numbers SWICHGAGE Back of DT9805 307 PH CD TATTLETALE On Ter minal Block Below Pressure O Te con TIE i Figure 3 DT9805 typical wiring for negative ground ignition 307 PH CD Connected to Corresponding Numbers On Terminal Block Below Emergency Stop Switch Frame Ground Adapter Package x 2 Conductor Connect to Shielded Cable Good Engine Belden or Ground Equivalent To Magnetic Pickup To Positive Gro
10. rom the front of the panel aligning the mounting studs with the appropriate holes Secure the tachometer using the four 6 32 nuts but do not overtighten the nuts as case damage could occur Back View Calibration Rocker Switches Overspeed Switches Panel H Wiring Terminals Applies to overspeed models only DT9803 AND DT9804 TYPICAL WIRING WARNING PERFORM THE WIRING INSTALLATION WITH THE POWER SOURCE OFF DO NOT ROUTE TACHOMETER LEADS WITH PRIMARY IGNITION WIRING DT9803 Connect the magnetic pickup cable conductors to the MPU terminal as shown in Figure 1 Use a two conductor shielded cable between the DT9803 and the magnetic pickup Figure 1 DT9803 typical wiring Figure 2 DT9804 typical wiring for negative ground ignition Back of DT9804 Negative Ground Ignition Optional Connection for 150 400 V Ignitions Back of DT9803 Flywheel 2 Conductor Shielded Cable Belden or Equivalent agnetic Pickup DT9804 Before wiring the DT9804 determine the output voltage and ground polarity of the ignition Table 1 lists the Peak Output Voltage and Ground Polarity of some common ignitions Connect the DT9804 tachometer to the CD ignition Figure 2 shows a typical wiring diagram for negative ground ignition system Table 1 Output Voltage amp Polarity of Common CD Ignitions Ignition Ground Peak Output MEG amp S
11. t voltage is 90 150 volts connect the ignition lead to the 90 150 input terminal on the DT9806 if it is 150 400 volts then connect the lead to the 150 400 terminal Figure 6 DT9806 typical wiring for negative ground ignition Figure 7 DT9806 typical wiring for positive ground ignition Non Classified Area Connected to Corresponding Numbers On Terminal Block Below Connected to 307 PH CD Corresponding Numbers SWICHGAGE TATTLETALE On Terminal Block Below 307 PH CD SWICHGAGE TATTLETALE Back of exe azz Spratt roa ren j wa wa Adapter AMELEWA AEAT Package Adapter char SS de Package Connect to Connect to food Engine Good Engine roun Ground Optional Connection for To Negative Ground Optional Connection for To Positive Ground 150 400 V Ignitions CD Ignition 150 400 V Ignitions CD Ignition CALIBRATING THE DT9800 SERIES TO YOUR ENGINE 1 Locate the calibration switches on back of the unit see page 1 150 2 4 5 8 9 120 10 90 1 2 4 6 8 10 60 11 ERIS are 149 3 4 5 8 9 119 3 10 89 2 5 6 8 10 59 1 5 11 2 If calibrating the DT9804 and DT9806 advance to step 3 If calibrating 148 1 2 3 4 5 8 9 118 1 4 10 88 2 4 5 6 8 10 58 1 2 6 11 147 2 6 8 9 117 1 3
12. und CD Ignition SWICHGAGE TATTLETALE 5 5 Pressure Overspeed Level 1 2 a 3 TIE YYY A i i I Back of T DT9805 Emergency 4 Stop Switch Frame Ground Adapter Package Figure 5 Overspeed DT9805 and DT9806 Gn bTes05 or DTes06 negative ground Murphy LCDT connection to Murphy ea Cee 2 Conductor Connect to Shielded Cable Good Engine Belden or Ground Equivalent To Magnetic Pickup To Negative Ground CD Ignition LCDT for positive ground ignitions reverse the negative and positive wires on the tachometer so that the positive terminal is grounded z m 0 DT9806 If connecting to a Murphy LCDT annunciator refer to Figure 5 See Before wiring the DT9806 determine the output voltage and ground General Catalog for more information on the LCDT polarity of the ignition Table 1 lists the Peak Output Voltage and Ground aoa NOTE When installing the DT9806 in a Murphy panel always connect Polarity of some common ignitions the DT9806 to the ignition input side of the power adapter If the DT9806 input is connected to the output of the adapter its display will read zero RPM since the adapter filters out the ignition pulses Figure 6 displays wiring to a negative ground ignition and Figure 7 for positive ground units If the ignition outpu
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