[SOLVED] Relay Problem: After on and off few times, the relay stuck/jam in the on stage.

[FvM]

I understand, that the 16A type is a Power PCB Relay RT1 bistable. PCB Relays - Schrack General Purpose and Power Relays - TE

It has limited inrush current handling. According to restricted contact force of the bistable operation, you don't find bistable variants of inrush-proof relays.

 

[ALERTLINKS]

Test with a new relay load being resistive type, like incadecent bulb or hair dryer to rectify if it is due to ballast choke or pfc capacitor.
Try with a capacitor around 33uF in paralell with coil side of relay.

 

[ben8118]

The relay I'm using is schrack RT314A12.

Would like to ask, what is the problem cause the relay stuck/jam in the on stage?

When I use schrack 040967002000, there is no such problem which stuck in the on stage.

Thanks.

 

[FvM]

I don't have access to old Schrack data sheets. Can you please post or link a specification of Schrack 040967002000?

 

[ALERTLINKS]

Tap hard with handle of screwdriver till your relay get out of latch.
Applying excessine heat while soldering can damage the relay. Or it is company defective.

 

[cameo_2007]

there is another scenario:

When the relay switches the load, due to an interference/noise the microcontroller gets reseted, and the relay goes off then. When the controller powers up, the relay turns on, again the controller resets, relay goes off, a kind of relay chattering happens. In the process of continous make and break of the contacts, an arc can cause a welding. But this is likely to happen at higher load switching. The way to get rid of this chattering problem is isolation of the relay from the control circuit.

 

[ben8118]

Dear all,

My problem is solved by using a high inrush current relay which is RTS3TF12. Thanks everybody for giving me the idea for solving the problem.