Exam 6: Special Purpose Motor, Control Devices and Programmable Logic Controllers

When the on -off transitions from each of the two tracks of an optical encoder are counted, the resolution is increased by a factor of eight.

The best PLC language for developing the basic structure of the program is

Detent torque is the maximum load -originating torque that the motor can stand without moving from its position with the stator energized.

The output symbol on a PLC ladder logic rung is active if

A conventional PM motor is also known as a wound rotor PM motor.

Relay ladder logic and ladder logic for a PLC program are similar because the output symbols and control logic are on a rung, but different because the PLC ladder never has field device switch contacts located in it.

The IEC 61131 ladder logic symbol library has only input contacts and output symbols available.

Which one of the following is not a part of the PLC scan cycle?

Examine on contacts look like NO contact symbols and must have NO contacts on the associated field device wired to the input pin for that address.

Which of the following is NOT a sequential function chart sequence?

Which of the following statements is NOT true during a PLC scan?

The DeviceNet module is used to communicate primarily with motor controllers.

Scan time is the time it takes for the PLC to read all input data and write that data into an input register.

Match the Allen Bradley SLC 500 register symbol with the register function. -C5

In rack/slot addressing the slot location of the PLC processor is indicated in the address.

Match the features to its motor . -Runs hot

Comparitors in the SLC 500 PLC must always be used on the input or right side of the ladder rung.

The permanent magnetic DC motor acquires its magnetic field from a permanent magnetic and an electromagnetic.

If the input address is I:4/10, then

Use the following ladder logic rung when matching the following answers. ‪ -Output coil is active when