User`s manual

iv
Table of Contents Magtrol WB/PB Dynamometers
3.3 CLOSED-CIRCUIT COOLING SYSTEMS .............................................................................................................. 60
3.3.1 EXAMPLE .................................................................................................................................................... 60
3.4 COOLING WATER ISSUES ....................................................................................................................................... 61
3.4.1 IMPURITIES ................................................................................................................................................ 61
3.4.2 HARDNESS .................................................................................................................................................. 61
3.4.3 FILTERING .................................................................................................................................................. 62
3.4.4 CONTROLLING THE WATER FLOW RATE ............................................................................................ 62
3.4.5 WATER INHIBITORS .................................................................................................................................. 62
3.4.6 CONDENSATION ........................................................................................................................................ 63
3.5 COOLING CIRCUIT PURGING ............................................................................................................................... 63
4. CONNECTIONS / CONFIGURATION ...............................................................................................64
4.1 CONNECTION TO MAGTROL MOTOR TESTING ELECTRONICS .................................................................... 64
4.1.1 MANUAL TEST CONFIGURATION ......................................................................................................... 64
4.1.2 PC-BASED TEST CONFIGURATION ........................................................................................................ 65
4.2 TANDEM DYNAMOMETER CONFIGURATION ................................................................................................... 66
4.2.1 ELECTROMAGNETIC CLUTCH ............................................................................................................... 66
4.2.2 TRANSFORMER CONNECTION .............................................................................................................. 67
4.3 CONNECTION TO NON-MAGTROL ELECTRONIC CONTROL UNITS ............................................................ 68
4.3.1 POWER AND THERMOSTAT CONNECTION ......................................................................................... 68
4.3.2 TORQUE SIGNAL CONNECTION ............................................................................................................ 70
4.3.3 SPEED SIGNAL CONNECTION ................................................................................................................ 71
5. OPERATING PRINCIPLES ...............................................................................................................72
5.1 EDDY-CURRENT DYNAMOMETERS (WB) .......................................................................................................... 72
5.2 MAGNETIC POWDER DYNAMOMETERS (PB) ................................................................................................... 72
5.3 WB VS. PB .................................................................................................................................................................. 72
6. CALIBRATION ..................................................................................................................................73
6.1 BASIC CALIBRATION INFORMATION ................................................................................................................. 73
6.1.1 CALIBRATION ARMS ................................................................................................................................ 73
6.1.2 CALIBRATION WEIGHT ........................................................................................................................... 74
6.2 CALIBRATION WITH MAGTROL MOTOR TESTING ELECTRONICS .............................................................. 75
6.3 CALIBRATION USING NON-MAGTROL ELECTRONIC CONTROL UNITS ..................................................... 75
6.4 CALIBRATION OF OVERLOAD PROTECTION .................................................................................................... 75
6.4.1 WB/PB 43 SERIES ....................................................................................................................................... 76
6.4.2 WB/PB 65 SERIES ....................................................................................................................................... 77
6.4.3 WB/PB 115 SERIES ..................................................................................................................................... 78
7. MAINTENANCE AND REPAIR .........................................................................................................79
7.1 MAINTENANCE ........................................................................................................................................................ 79
7.2 REPAIR ....................................................................................................................................................................... 79
7.3 SENDING EQUIPMENT TO MAGTROL FOR MAINTENANCE/REPAIR ........................................................... 79
MAGTROL LIMITED WARRANTY .........................................................................................................80
CLAIMS ............................................................................................................................................................................. 80
SERVICE INFORMATION ......................................................................................................................81
RETURNING MAGTROL EQUIPMENT FOR REPAIR AND/OR CALIBRATION ..................................................... 81
RETURNING EQUIPMENT TO MAGTROL, INC. (UNITED STATES) ................................................................ 81
RETURNING EQUIPMENT TO MAGTROL SA (SWITZERLAND) ..................................................................... 81