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CG Drives & Automation, 01-5326-01r3b
AApplications
51
6.
Applications
This chapter contains tables giving an overview of many
different applications/duties in which it is suitable to use AC
drives from
Further on you will
find application examples of the most common applications
and solutions.
6.1
Application overview
6.1.1
Cranes
6.1.2
Crushers
Challenge
VSI2.0 HD
solution
Menu
Starting with heavy load is difficult and risky. Can
lead to jerks causing swinging load.
Direct torque control, fast motor pre-
magnetization and precise brake control gives
instant yet soft start with heavy load.
331–338, 339, 351
Jerky movements can cause load to be dropped,
jeopardizing safety of people and goods.
Deviation control immediately detects load
change. Signals to parallel safety system to
activate mechanical brakes.
3AB, 3AC
Crane is driven slowly when returning empty or with
light load. Valuable time is lost.
Speed can be increased by field weakening.
343, 3AA, 3AD, 713
Braking with heavy load is difficult and risky. Can
lead to jerks causing swinging load.
Direct torque control and vector brake gradually
reduce speed to zero before mechanical brake is
activated.
213, 33E,33F, 33G
Operator starts braking long before end position to
avoid jerks. Valuable time is lost.
System automatically stops crane at end
position. Operator can safely drive at full speed.
3A2–3AA
Challenge
VSI2.0 HD
solution
Menu
High start currents require larger fuses and cables,
or for mobile crushers larger diesel generators.
Direct torque control reduces start current. Same
fuses as those for the motor, or smaller
generator.
331-338, 351
Difficult to start with heavy load.
Possible to boost torque at start to overcome
initial torque peak.
351–353
Material that could cause damage gets into the
crusher.
Load Curve Protection quickly detects deviation.
Warning is sent or safety stop activated.
411–41C9
Process inefficiency due to e.g. broken feeder or
worn jaw. Wasted energy, mechanical stress, and
risk of process failure.
Load Curve Protection quickly detects deviation
from normal load. Warning is sent or safety stop
activated.
411–41B, 41C1–41C9
9(0R'ULYH 96, 9(0 U
VEM transresch GmbH.
Содержание VEMoDRIVE VSI 2.0 HD
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Страница 52: ...50 Getting Started CG Drives Automation 01 5326 01r3b 9 0R ULYH 96 9 0 U...
Страница 64: ...62 EMC and standards CG Drives Automation 01 5326 01r3b 9 0R ULYH 96 9 0 U...
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Страница 206: ...204 Troubleshooting Diagnoses and Maintenance CG Drives Automation 01 5326 01r3b 9 0R ULYH 96 9 0 U...
Страница 232: ...230 Technical Data CG Drives Automation 01 5326 01r3b 9 0R ULYH 96 9 0 U...
Страница 238: ...236 Menu List CG Drives Automation 01 5326 01r3b 9 0R ULYH 96 9 0 U...
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