Technical information

TABLE OF CONTENTS
v
6.2.1 Wye Delta ............................................................................................................................................................... 91
6.2.2 Phase Control......................................................................................................................................................... 93
6.2.3 Current Follower.................................................................................................................................................... 93
6.2.4 Across The Line (Full Voltage Starter)................................................................................................................... 94
7 TROUBLESHOOTING ..................................................................................................................................................... 95
7.1 G
ENERAL TROUBLESHOOTING CHARTS .......................................................................................................................... 96
7.1.1 Motor does not start, no output to motor................................................................................................................ 96
7.1.2 During starting, motor rotates but does not reach full speed ................................................................................. 97
7.1.3 Acceleration not operating as desired .................................................................................................................... 97
7.1.4 Deceleration not operating as desired.................................................................................................................... 98
7.1.5 Motor stops unexpectedly while running ................................................................................................................ 98
7.1.6 Metering incorrect .................................................................................................................................................. 99
7.1.7 Other Situations.................................................................................................................................................... 100
7.2 F
AULT CODE TROUBLESHOOTING TABLE ..................................................................................................................... 101
8 THEORY OF OPERATION............................................................................................................................................ 109
8.1 S
OLID STATE MOTOR OVERLOAD PROTECTION............................................................................................................ 110
8.1.1 Overview............................................................................................................................................................... 110
8.1.2 Setting up the MX Motor Overload....................................................................................................................... 110
8.1.3 Motor Overload Operation................................................................................................................................... 112
8.1.4 Current Imbalance / Negative Sequence Current Compensation ......................................................................... 112
8.1.5 Harmonic Compensation ...................................................................................................................................... 113
8.1.6 Hot / Cold Motor Overload Compensation........................................................................................................... 113
8.1.7 Separate Starting and Running Motor Overload Settings .................................................................................... 114
8.1.8 Motor Cooling While Stopped .............................................................................................................................. 115
8.1.9 Motor Cooling While Running.............................................................................................................................. 116
8.1.10 Emergency Motor Overload Reset........................................................................................................................ 116
8.2 M
OTOR SERVICE FACTOR ............................................................................................................................................. 117
8.3 ACCELERATION CONTROL ............................................................................................................................................ 118
8.3.1 Current Ramp Settings, Ramps and Times............................................................................................................ 118
8.3.2 Programming A Kick Current............................................................................................................................... 119
8.3.3 TruTorque Acceleration Control Settings and Times ........................................................................................... 119
8.3.4 Power Control Acceleration Settings and Times .................................................................................................. 121
8.3.5 Open Loop Voltage Ramps and Times.................................................................................................................. 123
8.3.6 Dual Acceleration Ramp Control ......................................................................................................................... 125
8.4 D
ECELERATION CONTROL ............................................................................................................................................ 127
8.4.1 Voltage Control Deceleration............................................................................................................................... 127
8.4.2 TruTorque Deceleration ....................................................................................................................................... 128
8.5 W
YE-DELTA OPERATION.............................................................................................................................................. 129
8.6 PHASE CONTROL .......................................................................................................................................................... 131
8.7 CURRENT FOLLOWER ................................................................................................................................................... 133
8.8 A
CROSS THE LINE / FULL VOLTAGE OPERATION ......................................................................................................... 134
8.9 S
TART/STOP CONTROL WITH A HAND/OFF/AUTO SELECTOR SWITCH.......................................................................... 135
8.10 SIMPLIFIED I/O SCHEMATICS........................................................................................................................................ 136
8.11 U
SING MODBUS............................................................................................................................................................ 137
9 TECHNICAL INFORMATION...................................................................................................................................... 139
9.1 G
ENERAL INFORMATION............................................................................................................................................... 140
9.2 E
NVIRONMENTAL CONDITIONS..................................................................................................................................... 140
9.3 A
LTITUDE DERATING ................................................................................................................................................... 140
9.4 APPROVALS .................................................................................................................................................................. 140
9.5 C
ERTIFICATE OF COMPLIANCE ...................................................................................................................................... 140
9.6 L
IST OF MOTOR PROTECTION FEATURES ..................................................................................................................... 141
9.7 MX C
ONTROL CARD .................................................................................................................................................... 142
9.7.1 Terminal Points, Functions and Ratings .............................................................................................................. 142
9.7.2 Terminal Block Rating.......................................................................................................................................... 143