How to use PLC timers
#timers#PLC#ladderlogic
In this video, I will try to teach you the fundamentals of using timers in PLC ladder logic programming. I will also implement the timers in the Allen Bradley simulator logixpro software.
PLC timers are instructions that provide the same functions as on-delay and off-delay mechanical and electronic timing relays. A PLC timer provides a preset delay to the control actions.
In general, there are three types of PLC timer delays, ON-delay timer, OFF-delay timer and retentive timer on.
The terms represented in the timer block in the PLC are a Preset value which means the delay period of the timer, an Accumulated value which is the current delay of the timer.
A timer begins the counting on time-based intervals and continues until the accumulated value equals the preset value. When the accumulated value equals the preset time the output will be energized. Then the timer sets the output.