v
Magtrol Hysteresis Dynamometers
Table of Contents
4.1.10 TEMPERATURE RISE ................................................................................................................................ 41
5. OPERATING PRINCIPLES ...............................................................................................................42
5.1 SPEED ......................................................................................................................................................................... 42
5.2 TORQUE ..................................................................................................................................................................... 42
5.3 TORQUE SIGNAL AMPLIFICATION ...................................................................................................................... 43
5.4 DECIMAL POINT CONTROL .................................................................................................................................. 43
5.5 DAMPER CYLINDER ............................................................................................................................................... 44
5.6 BRAKE CONTROL POWER ..................................................................................................................................... 44
5.6.1
HD-800/815 AND ED-815 ........................................................................................................................... 44
5.6.2 HD-825 .......................................................................................................................................................... 44
6. CALIBRATION ..................................................................................................................................45
6.1 INITIAL CALIBRATION ........................................................................................................................................... 45
6.2 CALIBRATION BEAMS AND WEIGHTS ............................................................................................................... 45
6.3 CALIBRATION PREPARATION ............................................................................................................................... 46
6.4 CALIBRATION PROCEDURE .................................................................................................................................. 46
6.5 CALIBRATION FREQUENCY.................................................................................................................................. 48
7. OPTIONAL FEATURES ....................................................................................................................49
7.1 SPEED ENCODER ..................................................................................................................................................... 49
8. TROUBLESHOOTING .......................................................................................................................50
8.1 TORQUE READOUT PROBLEMS ........................................................................................................................... 50
8.1.1
NEW DYNAMOMETER ............................................................................................................................. 50
8.1.2
ZERO BALANCE ......................................................................................................................................... 50
8.1.3
FULL SCALE TORQUE .............................................................................................................................. 51
8.1.4
MECHANICAL (ROTATIONAL) ALIGNMENT ....................................................................................... 53
8.2 SPEED READOUT PROBLEMS ............................................................................................................................... 54
APPENDIX A: CALIBRATION RECORD .............................................................................................55
APPENDIX B: SCHEMATICS ...............................................................................................................56
B.1 TORQUE AMPLIFICATION BOARD ....................................................................................................................... 56
B.2 SPEED SENSOR BOARD ......................................................................................................................................... 57
B.3 LOAD CELL SCHEMATIC........................................................................................................................................ 58
B.4 HD-800–815 BRAKE CONTROL SUPPLY .............................................................................................................. 59
B.5 HD-825 BRAKE CONTROL SUPPLY ...................................................................................................................... 60
INDEX .....................................................................................................................................................61
SERVICE INFORMATION ......................................................................................................................63
RETURNING MAGTROL EQUIPMENT FOR REPAIR AND/OR CALIBRATION ..................................................... 63
RETURNING EQUIPMENT TO MAGTROL, INC. (UNITED STATES) ................................................................ 63
RETURNING EQUIPMENT TO MAGTROL SA (SWITZERLAND) ..................................................................... 63
