Motor Control 3: Lesson 4 - Working With Solid State Devices In Motor Control Flashcards
Sensors that use an NPN transistor to switch the output circuit are current-______ devices.
a. sinking
b. sourcing
sinking
Sensors that use a PNP transistor to switch the output circuit are current-______ devices.
a. sinking
b. sourcing
sourcing
Using the input module and sensor schematic diagram shown, the output of the sensor field device is ______.
a. Current sinking
b. Current sourcing
current sourcing
Using the input module and sensor schematic diagram shown, the output of the sensor field device is ______.
a. Current sinking
b. Current sourcing
current sinking
AC/DC, DC current-sinking, DC current-sourcing, and transistor-to-transistor logic (TTL) are the four most common types of ______ circuits used in controller input modules.
a. input
b. output
input
AC, DC, and transistor-to-transistor logic (TTL) are the three most common types of output circuits used in controller ______ modules.
a. input
b. output
output
Controller input and output modules have opto-isolation between the field device power and the controller or motor drive system power to eliminate noise and operational problems.
True or False
true
Opto-isolators used for AC signals have ______ LED(s) in the opto-isolator and DC circuits have ______ LED(s) in the opto-isolator.
a. 1 / 2
b. 2 / 1
2 / 1
The _______ trigger produces a deadband, so the output does not switch ON and OFF as the input moves above and below the trigger point.
a. analog
b. Edison
c. Schmidt
Schmidt
A(an) ______ event is the rapid flow of electrons between two bodies of unequal charge.
a. electrostatic discharge
b. harmonic
c. overload
electrostatic discharge
It is important that proper precautions and handling procedures be understood and followed in order to avoid ESD damage to solid-state devices.
True or False
True
The voltage level of a class 1 solid-state device that may cause potential damage is ______.
a. less than 1,000 V
b. 1,000 to 4,000 V
c. 4,000 to 15,000 V
less than 1,000 V
A smart or intelligent device contains a solid-state circuit or chip that provides communication and diagnostic capabilities for the device.
True or False
True
The self-diagnostic capabilities of smart devices are helpful when troubleshooting smart systems.
True or False
True
Efficient troubleshooting of a network control system requires knowledge of the vendor’s system software program.
True or False
True
