WorksheetsAdvance VFD Quiz 1
Total questions: 23
Worksheet time: 12mins
What is Synchronous Speed?
Synchronous speed is the speed at which the motor's stator field rotates.
Which two factors determine an asynchronous motor's speed when it's operated directly on the line?
Line frequency and number of poles
What is the term for the difference between a motor's synchronous speed and its actual shaft speed?
Which motor type's shaft turns at about the same speed as its stator field rotates?
Synchronous or Servo motor
Which part of a VFD converts AC into DC?
Which VFD components switch DC on and off very quickly to create synthetic AC?
Insulated Gate Bipolar Transistors (IGBTs)
What is the technique called that VFDs use to produce synthetic AC?
List the three categories of motors that the MOVIDRIVE B can control.
Brushless motors, DC motors, Servo motors
Induction motors, Linear motors, DC motors
Stepper motors, Servo motors, Linear motors
Synchronous motors, Asynchronous motors, Linear
What is the MOVIDRIVE B's programming language called?
Step 7
Visual Basic
C++
IPOS
How much continuous overload can a MOVIDRIVE B handle?
125% of rated output
In kilowatts, what is the power rating of and MDX61B0015?
1.5 kW
How can you tell if an IPOS program is running on a MOVIDRIVE B?
Check to see if a ProfiNet cable is connected.
Restart the MOVIDRIVE B unit and it will tell you.
The decimal point on the 7-segment display will be blinking.
Check the firmware of the device to see if it has IPO running.
Which two devices can be used with a VFD to deal with regenerative energy?
Transformer unit, Braking resistor (chopper)
Capacitor bank, Inductor coil
Regenerative power supply, Braking resistor (chopper)
Inductor coil, Regenerative power module
PROFIBUS, EtherCAT, Ethernet/IP, and PROFINET are all examples of what?
Industrial Fieldbus Communication
What is the name for the devices that provide feedback to the VFD about the motor's speed or position?
Encoders/Resolvers
Tachometers
MOVITOOLS will have a warning to confirm after you select "factory reset"
True
False
Signal DI 00 always acts as Controller Inhibit and cannot be re-assigned to another function.
True
False
If a motor has delta and wye stator configurations, which one will require a higher input voltage?
Wye
Delta
Neither, they will require the same input voltge.
If a MOVIDRIVE B's 7 segment display os showing an H, what is the VFD's current operating mode?
Manual Mode
A proximity sensor outputs a 1 when it isn't detecting anything and a 0 when it is. What is it's active level?
High
Medium
Low
What is the speed change of the ramp shown in this diagram?
1200 rpm
600 rpm
-600 rpm
-1200 rpm
On this MOVIDRIVE B, where could you measure your DC link voltage?
A
D
B
F
On this MOVIDRIVE, where is the memory card that stores the firmware and parameter settings
G
E
B
A
