How accurately can the pause or pulse be set? I need 5 modules and the pause to be exactly 10 minutes in each one.
The unit is quite accurate in repeating a set delay, however setting the delay to exactly 10 minutes is not possible, due to the way the time is set.
Do you have a product that would allow me to set the time to exactly 10 minutes? Specifically, I want to pause for 10 minutes and then start (probably a lamp) until the module is powered off and then reset.
Sorry, no such product.
I am also looking for a device that can provide an accurate timing pulse. Looking at the schematic for the VM188 the pulse is set by RV2 and pause is set by RV1 which are 5k ohm potentiometers. Looking at a picture of the VM188 shows that these potentiometers are single turn devices.
If they were changed to 10 or even 25 turn pots, would that make the help to make the timing pulses more accurate say within +/- 0.5 seconds?
Thanks,
Not really, because the unit is not crystal driven…
Hello all,
I’d like to kick off a 220/240V power source for about 3.5 minutes.
If I power up briefly the VM188 (a push-button switch on the 12v circuit) will the relay on the VM188 module, set to one shot mode, hold for the 3.5 minutes?
Thanks in advance!
The power supply of the VM188 must be present at all times, otherwise the unit cannot operate.
Hmmm, thanks, I suspected as much…
What could you suggest to trigger power for about 3.5 minutes, triggered by a push button? The aim is to have a spectator activate an animation which lasts for this amount of time?
Thanks in advance!
Thanks for the suggestion, looks like just the job.
Hmmm after re-checking the VM141, looks like the relay is a liitle weak. I need it to handle 220V, at about 1KW (an irrigation pump).
Would it be possible to envisage the VM188 (has a better relay), with the transformer power activated initially by a push button, and also activated by the output from the NO relay output until the timer ends? Maybe the push-button would need to be held a second or two?
Power supply needs to be present at all times.
You can simply drive a bigger relay with the VM141 relay.