PLC Timers Test

With an ON Delay normally open, timed closed contact, (NOTC) when the Timer relay coil is energized the contact closes instantly.

• True

• False

The preset time of the On -Delay PLC timer represents the amount of time that has elapsed from the moment the timing coil became energized.

• True

• False

The timed contact of a PLC timer can only be used as a normally-open contact.

• True

• False

The off-delay PLC timer operation will keep the output energized for a time period after the rung containing the timer has gone false.

• True

• False

The retentive timer must be intentionally reset with a separate signal.

• True

• False

Timers can not be interconnected or cascaded.

• True

• False

If the preset time of a timer is 150 and the time base is 0.1 seconds, the time-delay period would be 1500 seconds.

• True

• False

An On-Delay timer would be best suited for a control application which is to begin timing when the rung is true and hold the accumulated time when the rung goes false.

• True

• False

In general, the three different types of PLC timers are

• TON, TOF, and RTO

• TON, TOF, and PRE

• TON, ACC, and RTO

• TT, EN, and DN

Which of the following is NOT a quantity associated with the timer instruction?

• preset time

• accumulated time

• time of day

• time base