Deck 21: Alarm and Event Programming

Question 1

Almost all power supplies are shipped from the manufacturer with the voltage setting in the HIGH voltage (240 V) position.

Answer 1

True

Question 2

Explain what to check if an output module LED illuminates but the device does not energize.

Answer 2

1. Wiring to the output device.
2. Operation of the output device.
3. Proper potential to the output device.
4. Output device wired to correct output module and proper terminal.

Question 3

A(n) ____________________ ON instruction intensifies or goes to reverse video when the input device is ON, or closed.

Answer 3

EXAMINE

Question 4

To be a successful troubleshooter, the technician must use a(n) ____________________ approach.

Question 5

At the end of the start-up procedure, what are you looking for after you apply power?

Question 6

Each time an input device is closed, the corresponding LED on the input module should illuminate.

Question 7

There are three methods used to test output devices.

Question 8

The first step in the start-up procedure is to check all power and communication cables to ensure that the connector pins are straight, and not bent or pulled out.

Question 9

For outputs that can be ____________________, be sure equipment is in the start-up position, is properly lubricated, and is ready to run.

Question 10

Explain a method of testing inputs other than using EXAMINE commands.

Question 11

Explain what must be checked even before the start-up procedure is undertaken.

Question 12

The electrician and/or technician should be aware of how the system normally functions if he or she expects to successfully troubleshoot the system.

Question 13

During start-up, you should ensure that all ____________________ are securely held in the I/O rack, and that field wiring arms (if applicable) are fully seated and locked.

Question 14

Careful start-up procedures are necessary to prevent damage to the driven equipment and the programmable controller system, or, more importantly, ____________________.

Question 15

Explain why you must use a high-impedance meter to test voltage readings on PLC input circuits.