Snubber for AC Motor

Thread Starter

Mopar_Mudder

Joined Mar 13, 2012
43
I have a reversible AC motor that is activated by a 5v DC trigger using 3 relays. Problem is I am getting some sort or "noise" that is effecting the circuit that is triggering the relays. From my reading it seems maybe I need some sort of snubber on the motor. Problem is that I am not really sure how to do it or what to use.

This is the motor http://www.grainger.com/product/DAYTON-Gearmotor-4Z062?searchQuery=4Z062A

These are the relays: http://www.digikey.com/product-search/en?vendor=0&keywords=V23105A5301A201

I attached a Schematic of what I have and picture also.





 

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Thread Starter

Mopar_Mudder

Joined Mar 13, 2012
43
Motor Technical Specs
  • Item AC Gearmotor
  • Voltage 115
  • Phase 1
  • Hz 50/60
  • Input HP 1/60
  • Gear Ratio 109:1
  • Full Load Amps 0.38
  • Insulation Class B
  • Enclosure TENV
  • Rotation Reversible
  • Motor Type PSC
  • Capacitor Required 2MDV4
Item Motor Run Capacitor
  • Overall Shape Oval
  • Microfarad Rating 5
  • Voltage 370VAC
  • Hz 60/50
  • Shape Oval
 

Thread Starter

Mopar_Mudder

Joined Mar 13, 2012
43
No I don't have a diode across the coils. It is really bare bones but served the purpose I needed to until I decided to add electronic controls to it.
 

Thread Starter

Mopar_Mudder

Joined Mar 13, 2012
43
Being I run current both ways through the coil of the relay right now am I going to have to use a diode bridge to make it all work?
 

Thread Starter

Mopar_Mudder

Joined Mar 13, 2012
43
It is used to reverse the motor direction. One relay is always triggered regardless of input polarity, this one powers the motor no mater what. The other relay is only active when the input polarity is reversed, that relay is to reverse the motor direction.
 

Thread Starter

Mopar_Mudder

Joined Mar 13, 2012
43
I just had a thought on this, and the relays can not be my problem. Reason is that I am running the motor with the manual buttons when I am testing this. When using those buttons none of the relays are tripped, just the switch button is pushed. So I don't think diodes on the relays will help if my thinking is correct.
 
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