OT: Pushbuttons

[Tim Ganz]

I am trying to configure a some pushbuttons here http://raise.rockwellautomation.com...cmd=edit&CID=F308D89C7CB74658B9D9192189569E50

I have a problem understanding the power module type? What is that? I have selected LEd as my light and 12-130 volt AC / DC for the voltage.

The power module type options are

Transformer
Dual Input
Full Voltage
Resistor
None - Operator Only

Any idea?

 

[Timbert]

You will need to give us the part number you are trying to configure as the configuration link you give times out.

 

[TConnolly]

Determine what kind of bulb you will use first.

The transformer module has a very small transformer in it that steps down an AC control voltage to bulb voltage when using 6V low voltage bulbs. Transformers are available for a wide variety of control voltages.

The resistor module limits the current and provides an inline voltage drop for neon bulbs.

None is for non-illuminated buttons, there won't be a bulb holder or power module.

If the bulb voltage matches the control voltage then choose full voltage.

 

[Tim Ganz]

Alaric

What are the dual input and full voltage? How do they work?

It is a 800T seires pushbutton that I am trying to configure.

I want to use LED for the light if possible and I will be using 24 vdc power.

 

[TConnolly]

Then use a full voltage module and 24V LEDs.

 

[gbradley]

Hi Tim,
A lot of machinery uses 120V control circuits.
120V bulbs had too thin of a filament, and would break due to machine vibration.
Allen Bradley and other MFRS puts step down coils right on the pushbutton switches or pilot lights.
These transformers step the voltage down so that thicker filament Lower voltage bulbs (More Robust) can be used.
Of course now we use LEDS.
Vibration is no longer an issue, and there are quite a few more reasons to use LEDS.

 

[yam785]

One thing to keep in mind, when using buttons with the transformers, is it adds to the overall depth required. Verify you have room wherever you are locating them, for the additional depth. You should be able to see the demensions on-line.

 

[Tim Ganz]

Thank you everyone for the tips.I will use the full voltage module and the LED bulbs.