Hello,
I have a question about a two coil latching relay I am using for a project. The relay is used as follows: every few seconds an air humidity measurement is made with a sensor and if humidity is below a certain level one coil in the relay is energized momentarily to switch a fan on. If the humidity is above the level the other coil is energized to switch the fan off. So, every few seconds one of the coils is energized. If the same coil is energized over and over again because the humidity threshold is not crossed, the fan stays as it was. This is what happens most of the time, since only once in a while the threshold is crossed and the other coil is energized.
So my question is about the specifications for the relay. It says there that the relay contacts have an electrical endurance of so many OPS (operations I guess), depending on the current and voltage. So what counts as an OP? Is it only when the relay changes from set to reset and viceversa, or also when the same coil is energized over and over again (which is most of the time)? My guess is that an OP is only when the relay changes its state, but I would appreciate an expert opinion.
Thanks!
I have a question about a two coil latching relay I am using for a project. The relay is used as follows: every few seconds an air humidity measurement is made with a sensor and if humidity is below a certain level one coil in the relay is energized momentarily to switch a fan on. If the humidity is above the level the other coil is energized to switch the fan off. So, every few seconds one of the coils is energized. If the same coil is energized over and over again because the humidity threshold is not crossed, the fan stays as it was. This is what happens most of the time, since only once in a while the threshold is crossed and the other coil is energized.
So my question is about the specifications for the relay. It says there that the relay contacts have an electrical endurance of so many OPS (operations I guess), depending on the current and voltage. So what counts as an OP? Is it only when the relay changes from set to reset and viceversa, or also when the same coil is energized over and over again (which is most of the time)? My guess is that an OP is only when the relay changes its state, but I would appreciate an expert opinion.
Thanks!