Electrical2Go - Online Electrical Supplier
This official sponsor may provide discounts for members

Discuss EM Lock Partially Energize in the Security Alarms, Door Entry and CCTV (Public) area at ElectriciansForums.net

Welcome to ElectriciansForums.net - The American Electrical Advice Forum
Head straight to the main forums to chat by click here:  American Electrical Advice Forum

I recently Done wiring for RFID access control system which works fine all the functions perfectly,then when i do wiring for two em lock at frameless glass door and power it up the first em lock fully energize and the second em lock is partially energize and cant hold the strike plate. The first emlock works perfectly fine. The wiring i did for these 2 em lock is loop in the wire at emlock terminal+ to + and - to - then to 12VDC 5 amps power supply.
So what is the reason??? thanks for the electrifying help.
 

Pete999

-
Arms
Esteemed
I recently Done wiring for RFID access control system which works fine all the functions perfectly,then when i do wiring for two em lock at frameless glass door and power it up the first em lock fully energize and the second em lock is partially energize and cant hold the strike plate. The first emlock works perfectly fine. The wiring i did for these 2 em lock is loop in the wire at emlock terminal+ to + and - to - then to 12VDC 5 amps power supply.
So what is the reason??? thanks for the electrifying help.
Without seeing the job or any drawings, you haven't wired the locks in series have you? just a stab in the dark.
 
  • Thread Starter Thread Starter
  • #3
Without seeing the job or any drawings, you haven't wired the locks in series have you? just a stab in the dark.
Never wire the lock in series. I wire the locks in parallel. The first lock is energize can hold the door then the second lock still have weak magnetic force which cant hold the door
Post automatically merged:

Without seeing the job or any drawings, you haven't wired the locks in series have you? just a stab in the dark.
My wiring look like this lock.jpg
 
Last edited:

PEG

-
Mentor
Arms
Esteemed
That's parallel - it'll more likely be a volt drop issue.....check if specced ac or dc,check current draw on mags,and duration.
 
  • Thread Starter Thread Starter
  • #6
That's parallel - it'll more likely be a volt drop issue.....check if specced ac or dc,check current draw on mags,and duration.
The both em lock is 12VDC in the spec and the mag in first one is stronger and the second one is weaker
Post automatically merged:

Does the second lock work if the first one is not connected?
The both lock is working but the first em lock magnetic force is more and the second em lock magnetic force is weaker
 

PEG

-
Mentor
Arms
Esteemed
Ok,so DC locks,what is the type and output of the transformer,what is the power requirement of the locks,and have you measured the voltage at the locks,while powered up?
 

Pete999

-
Arms
Esteemed
The both em lock is 12VDC in the spec and the mag in first one is stronger and the second one is weaker
Post automatically merged:


The both lock is working but the first em lock magnetic force is more and the second em lock magnetic force is weaker
Have you bothered to clean th magnetic pole faces?
 
  • Thread Starter Thread Starter
  • #9
Ok,so DC locks,what is the type and output of the transformer,what is the power requirement of the locks,and have you measured the voltage at the locks,while powered up?
Transformer output is 12VAC which convert to 12 VDC by bridge rectifier and the power is not stated in the lock datasheet or specification and the voltsge is same on both emlock
Post automatically merged:

Have you bothered to clean th magnetic pole faces?
The both emlock is brand new
 

telectrix

-
Mentor
Arms
Esteemed
as previuos , i suspect volt drop or psu is not up to the job of supplying sufficient current to 2 locks. try patching in a second psu so each lock has a separate feed.
 

PEG

-
Mentor
Arms
Esteemed
You will need to know,that the transformers and rectifiers,are correct in size and type,and that they are compatible with the locks.

Without the specification of the locks,measuring the voltage and current at their terminals,will only tell you if a difference,exists.

With no info available,i would have switched locks,to limit options of quest :)
 
  • Thread Starter Thread Starter
  • #13
as previuos , i suspect volt drop or psu is not up to the job of supplying sufficient current to 2 locks. try patching in a second psu so each lock has a separate feed.
yea that's the reason the second lock didn't have enough current
Post automatically merged:

You will need to know,that the transformers and rectifiers,are correct in size and type,and that they are compatible with the locks.

Without the specification of the locks,measuring the voltage and current at their terminals,will only tell you if a difference,exists.

With no info available,i would have switched locks,to limit options of quest :)
When the frameless glass door installation, it's already fix with two em lock but the wiring is undone. The only spec is state in the emlock is 12 VDC
 

PEG

-
Mentor
Arms
Esteemed
I would check the wiring,from the point it parallels off,to the emlock itself.

Resistance of each emlock,volts and current during operation....then a nice cup of tea...🙂
 

Reply to EM Lock Partially Energize in the Security Alarms, Door Entry and CCTV (Public) area at ElectriciansForums.net

Aico Carbon Monoxide Detectors
This official sponsor may provide discounts for members
Instyle LED Lighting Specialists UK
This official sponsor may provide discounts for members
Top Bottom