EM Lock Partially Energize

DPG · Dec 11, 2019

Deswin said:
Maybe that's the case, the air gaps even a few mili meter can effect the magnet or perhaps the control power supply for RFID is not support for two door magnet. The magnet i bought has 6 month warranty if there's malfunction in magnet. I try to call a RFID technician and told him about this problem and waiting for his answer. What is reluctance by the way??

The issue of the power supply not being able to supply two emlocks has been tested though, when you powered the suspect lock up directly from a power supply.

Reluctance is resistance but relating to magnetic fields rather than electric current.

Deswin · Dec 11, 2019

DPG said:
The issue of the power supply not being able to supply two emlocks has been tested though, when you powered the suspect lock up directly from a power supply.

Reluctance is resistance but relating to magnetic fields rather than electric current.

Okay. When I powered the emlock directly to power supply, it's behave the same way. The emlock has magnetic field can hold strike plate without install at door, but can't close the door when the strike plate attach to the door. This seems a mystery to me

DPG · Dec 11, 2019

Yes, but does the other lock behave in the same way when connected to the same power supy and installed at the same door. You need to do testing where only one thing changes each time.

Deswin · Dec 11, 2019

DPG said:
Yes, but does the other lock behave in the same way when connected to the same power supy and installed at the same door. You need to do testing where only one thing changes each time.

The first emlock i connect directly to the same power supply, works perfectly fine. When i connect the second power supply directly to the same power supply it not work prefectly fine like the first em lock. I didn't connect the both emlock to the power supply, i did separately.

DPG · Dec 11, 2019

So there's no mystery - the 2nd lock behaves differently to the first one when installed in the same way and powered in the same way. Unless I'm missing something.

Deswin · Dec 11, 2019

DPG said:
So there's no mystery - the 2nd lock behaves differently to the first one when installed in the same way and powered in the same way. Unless I'm missing something.

Hahaha I know there's no mystery,but something mystery going on to the emlock. Maybe a air gap messing with emlock. When i take out the strike plate from the glass door and directly place to the magnet and get stick to the magnet while power on. When i install the strike plate to thr glass door and close the door to magnet but not stick so closely like the first emlock. even the second emlock is brand new which i bought

Deswin · Dec 13, 2019

DPG said:
Yes, but does the other lock behave in the same way when connected to the same power supy and installed at the same door. You need to do testing where only one thing changes each time.

Now it's time to end this subject. Today I solve this EM lock problem and it's over. All the root cause for this mess if the glass door. I should blame the contractor who install the glass door not correctly and not in good position.Although the strike plate hit the EM lock perfectly but didn't touch enough surface to the emlock cause no attraction between em lock and the strike plate. After I call the contractor and fix the glass door and it did the rewiring for both em lock and it's work fine. But i still used two power supply for each emlock because can use another power supply for both em lock if another power supply spoil or damaged in future. Finally this mystery is solved and CASE CLOSED

. I also want to thank all electrician expert and engineer try to guide me and teach me how to troubleshoot this problem and I learn a lot of lesson from you guys. I appreciate your help and thank you once more to 'Sir Marconi' and 'Sir DPG' for help me to become a good electrician. If One Day i come to United Kingdom Hope we can meet and have some Coffee there. TREATS ARE MINE.