– 29 –– 28 –EnglishCalibrate the scale of the tachometer (TM) from the potentiometer onthe rear panel.1. While running the motor at its full rotation speed without load,adjust to 1450 min-1 if power supply is at 50 Hz, or 1750 min-1 if60 Hz.2. Monitor the output signal of the TG on an oscilloscope anddetermine the frequency. And adjust:rotating speed N (min-1 ) = 5 x f (Hz)Caution: Since the circuit is not isolated from the power supply,use an insulated tool such as an insulated screwdriver to protectagainst electric shock.External braking resistor (DVOP003)5.6 Ω 10WThe resistance of DVOP003 is 5.6 Ω. When using commercially availableresistor, choose 4.7-6.8 Ω, 10 W or larger.ø3.81233 ±3.0 0.5 4.8 ±0.5 (ø2.5)9 +3–1310.5±1.5(2.2)0.86 ±0.514 ±110.5 ±1.548 ±2 (0.6)Unit: mm5. OptionsTachometer (DVOP001)This tachometer is especially designed to operate with our speedcontroller so that it can provide easier displaying of motor speed.65max4012.28 ±18.56048 ±0.3ø54 ±14848Input terminalPotentiometerfor calibration2–M3Mountingscrew48 ±0.3Panel cutout drawing2–ø3.5 holePin No.45PinkPink TGTMMotorSpeed controllerUnit: mm· Connect the tachometer in parallel with the tachometer generator (TG).· If the tachometer (TM) requires longer connection cable, use shieldedtwisted pair cable. Don't ground shielding of the cable.· Accuracy of tachometer readings will depend on variation in motorperformance and operating environment (temperature and noise). Thetachometer should be used as a rough indicator. |
