EM Lock Partially Energize

[Deswin]

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]

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.

 

[Deswin]

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
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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

 

[PEG]

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.

 

[snowhead]

Does the second lock work if the first one is not connected?

 

[Deswin]

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
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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]

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]

The both em lock is 12VDC in the spec and the mag in first one is stronger and the second one is weaker
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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?

 

[Deswin]

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
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Have you bothered to clean th magnetic pole faces?

The both emlock is brand new

 

[telectrix]

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.

 

[KWCFC]

What cable did you use and what voltage are you getting at the failing lock?

 

[PEG]

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

 

[Deswin]

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
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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]

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...?

 

[Deswin]

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...?

This is the emlock i done wiring previously. maybe the current draw in first is more than the second one.