Rockwell-automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE Manual de usuario Pagina 21
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2-2
SMC-2 Smart Motor Controller
Modes of Operation (cont.)
Soft Start
This is the most common method of starting. The initial torque value
is set between 0–70% of locked rotor torque. The motor voltage is
steplessly increased during the acceleration ramp period, which is
adjustable from 2–30 seconds.
Figure 2.2 Soft Start
Current Limit Start
This starting mode is used when it is necessary to limit the maximum
starting current. This can be adjusted from 25 to 550% of full load
amperes. The current limit starting time is customer set. If the motor
is not up to speed after the selected time, the motor will transition to
full voltage
Figure 2.3 Current Limit Start
Start Run
Percent
Voltage
Initial
Torque
100%
Time (seconds)
Start
550
25
Percent
Full Loa
Amp
Time (seconds)
- Application 1
- Please Read! 2
- Important User 2
- Information 2
- Table of Contents 3
- SMC Controllers 8
- Chapter 1 9
- Modes of Operation 10
- Adjustments 11
- Features 11
- Wiring Diagrams 12
- Suitable Replacement 14
- Applications 14
- Applications (cont.) 15
- SMC-2 Smart Motor Controller 20
- Modes of Operation (cont.) 21
- Current Limit Level 24
- Time Select 24
- Adjustments (cont.) 25
- Wiring Diagram 26
- Soft Stop Option 27
- Options (cont.) 29
- Chapter 3 38
- Starting Methods 39
- Current Limit Start 40
- Dual Ramp Start 40
- Starting Methods (cont.) 41
- Electronic Overload 42
- Built-in Communication Port 42
- Features (cont.) 43
- Phase Rebalance 44
- Metering 44
- Fault Indication 44
- Control Terminal Description 46
- Typical Wiring Diagrams 52
- (without options) 52
- (without options) (cont.) 55
- Control Options 56
- Control Options (cont.) 57
- Pump Control Option 60
- Stopping follows: 62
- Preset Slow Speed Option 64
- Speed Option follows: 66
- Customer supplied 70
- Smart Motor 72
- Accu-Stop Option 74
- Capability 80
- Plus Controller 83
- Tow Chain 93
- Exhaust Intake 95
- 1-1/2 HP 96
- 480 Volts 102
- Centrifuge 102
- Gearbox Motor 102
- Gearbox 103
- 575 Volts 104
- 240 Volts 109
- Bundle Bundle 113
- Windshields 114
- 230 Volts 116
- Motor Motor 116
- Die Die 116
- ~~~~~~~~~~~~~~~~~ 122
- Application Considerations 125
- Use of Protective Modules 126
- Current Limit Fuses 127
- Motor Overload Protection 128
- Stall Protection and 129
- Jam Detection 129
- Built-in SCANport 129
- Communications 129
- Power Factor Capacitors 130
- Multi-motor Applications 132
- Part Winding 133
- Wound Rotor 133
- Synchronous 133
- Altitude De-rating 134
- Isolation Contactor 134
- SMC Dialog Plus Controller 135
- Winding Heater 137
- Motor Torque Capabilities 138
- Controller Options 138
- Accu-Stop 139
- Energy Saver Operation 139
- Energy Saver (cont.) 140
- Application Requirements 141
- Preliminary Estimates 141
- Chapter 6 143
- Mining and Metals 144
- Food Processing 145
- Pulp and Paper 146
- Petrochemical 147
- OEM Specialty Machine 149
- Lumber and Wood Products 150
- Water/Wastewater 151
- Treatment and Municipalities 151
- Design Philosophy 152
- Reduced Voltage Starting 154
- Reduced Voltage 155
- Design B Motors 156
- Reduced Voltage (cont.) 157
- Solid-state 159
- Chapter 9 161
- Solid-state Starters 162
- Using SCRs (cont.) 162
- Reference 163
- Torque and Horsepower (cont.) 164
- Locked-Rotor Torque (LRT) 165
- Pull-Up Torque (PUT) 165
- Breakdown Torque (BT) 165
- Motor Output for 169
- NEMA Design Designations 169
- Polyphase 1–500 HP 169
- Polyphase 1–500 HP (cont.) 170
- Calculating Torque 173
- (Acceleration Torque 173
- Required for Rotating Motion) 173
- ---------------------------= 174
- -----------= 174
- Torque Formulas 175
- AC Motor Formulas 176
- Torque Characteristics on 177
- Common Applications 177
- Common Applications (cont.) 178
- Electrical Formulas 179
- Calculating Motor Amperes 180
- Other Formulas 181
- Engineering Constants 181
- Engineering Constants (cont.) 182
- Conversion Factors 185
- Conversion Factors (cont.) 186
- ---------------------= 187
- Glossary 188
- Glossary-2 189
- Glossary-3 190
- Glossary-4 191
- Glossary-5 192
- Glossary-6 193
- Glossary-7 194
- Glossary-8 195
- Glossary-9 196
- Glossary-10 197
- Glossary-11 198
- Glossary-12 199
- Glossary-13 200
- Glossary-14 201
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