Hey guys i wanna ask a question. I have small filling & capping machine which has a 4 door to access inside. So the idea is to put 4 magnetic switch ( Omron GLS-1L) so whenever door open the machine stop. When the door is close we can continue to run the machine. wiring is not related to plc connection just to stop the machine only.

The component : 4 unit Omron GLS 1L
: 24vdc psu
: Relay MY4N 24VDC

So i know that we can series the magnetic switch together. So connection after the relay is wire need to go to emergency push button ? to stop the machine if one of the door is open. Can someone help me since i a bit confuse for the wire diagram for the system. In addition, can i use the external wiring without using the plc connection ? simply just to stop the machine only.

 

"" So connection after the relay is wire need to go to emergency push button ? ""

This "sounds" correct, but without a Schematic I can't be sure.
.
.
.

 

"" So connection after the relay is wire need to go to emergency push button ? ""

This "sounds" correct, but without a Schematic I can't be sure.
.
.
.

Idk if this a proper schematic, just a rough sketch schematic & the wiring connection im a bit confuse , hopefully can understand.

wandering if i need to tap the wire from stop button or emergency push button act as a trigger when the magnetic is in NO condition.

 

Are you sure that the E stop button has a normally open contact ? (IE the contact is open when NOT activated.)
Most E stop buttons I have seen have closed contacts when NOT activated.
Does the existing E stop button carry the full current taken by the machine or does it only carry the current for a control circuit ?

Les.

 

THOSE ARE NOT SAFETY INTERLOCK SWITCHES!!!
Those are security alarm system switches which will be fine if you want to stop any from stealing your machine. They will not pass any honest safety system inspection.

Aside from that, having the safety cage switches activate the E-STOP function mode is begging for machine problems, at best.

An actual "E-STOP" switch does not carry any machine power! It switches off the power control for all of the motion functions, often by "dumping CRM. The intention is to stop damage caused by motion, no matter what the cost.

Switches intended for the application are available from actual industrial suppliers and they will be a whole lot more durable that the ones shown.

For application in areas where there are no safety standards and OSHA has no authority, the switches shown could be wired in series with each other and connected in series with the existing E-STOP switch NC contacts. That would work but not meet any safety standards, and they are easy to defeat or bypass.

I have included safety circuits in machines used in many industrial plants for many years, so I am aware of how it was. The current standards seem to be intended to also protect stupid people bent on self destruction. Current safety interlock standards are very demanding, and so if they apply to the TS area a study of the rules is what I recommend.

 

THOSE ARE NOT SAFETY INTERLOCK SWITCHES!!!
Those are security alarm system switches which will be fine if you want to stop any from stealing your machine. They will not pass any honest safety system inspection.

Aside from that, having the safety cage switches activate the E-STOP function mode is begging for machine problems, at best.

An actual "E-STOP" switch does not carry any machine power! It switches off the power control for all of the motion functions, often by "dumping CRM. The intention is to stop damage caused by motion, no matter what the cost.

Switches intended for the application are available from actual industrial suppliers and they will be a whole lot more durable that the ones shown.

For application in areas where there are no safety standards and OSHA has no authority, the switches shown could be wired in series with each other and connected in series with the existing E-STOP switch NC contacts. That would work but not meet any safety standards, and they are easy to defeat or bypass.

I have included safety circuits in machines used in many industrial plants for many years, so I am aware of how it was. The current standards seem to be intended to also protect stupid people bent on self destruction. Current safety interlock standards are very demanding, and so if they apply to the TS area a study of the rules is what I recommend.

Understood. Can you suggest which button that i can trigger the machine to stop if the door is open & When the door is close the machine running back to normal

If anyone could help the wiring connection on the drawing i would be appreciate.

 

If there is a "stop" button that is to cause an orderly stop of the machine, THAT would be the first choice to connect the added door switches in series with.
How much electrical training or experience do you have? That will help me to know how much descriptive details I need to provide. I have already provided enough for a certified master electrician, I can provide a lot more details if they are needed. But It would not be good to be telling the master how to do it when they already know.

 

as already stated those are not safety rated.
proper safety circuit rating would need to be determined through a safety review. then one can search for suitable products...

something like this
https://www.ia.omron.com/products/c...switches/non-contact-door-switches/index.html

 

note that switches are not enough.
for safety application you also need a safety controller. in most cases safety rated components are colored red or yellow. safety switches do have special marking (circle with an arrow) but this may not be shown on all products.

 

Idk if this a proper schematic, just a rough sketch schematic & the wiring connection I'm a bit confuse , hopefully can understand.
wandering if I need to tap the wire from stop button or emergency push button act as a trigger when the magnetic is in NO condition.

For what you are asking this is the wiring to operate the relay via the mag switches. The relay is activated when all four doors are closed.
You have four sets of SPDT contacts available to operate as a Stop switch. Don't know how those contacts can be used with the available info currently.
Whether this requires "safety switches" is debatable.

 

If there is a "stop" button that is to cause an orderly stop of the machine, THAT would be the first choice to connect the added door switches in series with.
How much electrical training or experience do you have? That will help me to know how much descriptive details I need to provide. I have already provided enough for a certified master electrician, I can provide a lot more details if they are needed. But It would not be good to be telling the master how to do it when they already know.

Not to much just 1 year. Just trying to learn here. I would be much appreciated if you guys could help.

 

I would be much appreciated if you guys could help.

Getting the info on the Stop Switch asked in post #4 would help

 

Not to much just 1 year. Just trying to learn here. I would be much appreciated if you guys could help.

I have provided quite a bit of information. The simplest effective scheme is to wire all of those normally open, held closed switches in series with the stop switch. Use wire with insulation appropriate for the voltage involved.

 

I have provided quite a bit of information. The simplest effective scheme is to wire all of those normally open, held closed switches in series with the stop switch. Use wire with insulation appropriate for the voltage involved.

That would be the simplest solution providing the Stop Switch is NC and the mag switches can handle the current.
They are rated at 100ma.

 

please.... before we know the nature and dangers posed by the machine, do NOT offer suggestions that are not safety rated. that is irresponsible and very misleading. machine safeguarding has own set of standards supported by laws because machines can be more than capable of inflicting harm on humans.

 

If it's dangerous to open the doors shouldn't the machine already have safety measures incorporated.

 

don't know and don't care... this thing has an emergency stop and four doors. to me this sounds like an industrial machine, not a toaster or Nintendo.

therefore, why would anyone assume that machine is safe? from all we know, TS may be the one building it or at least modifying it. and he clearly lacks necessary understanding even of basic circuit design, not to mention intricacies and requirements of safety circuits. so one should treat it with healthy dose of caution...

one can guard those doors by putting padlocks. but the objective is clearly to provide fast access to something that need to be guarded. as someone who has been designing and building industrial machinery for more than three decades, i strongly suggest to let go of this one.

proper process involves risk assessment and based on established standards choose circuit of proper performance level. once that is known, circuit discussion can take place.

 

If it's dangerous to open the doors shouldn't the machine already have safety measures incorporated.

Bought the machine from china . Medium size

 

so connect it

I have provided quite a bit of information. The simplest effective scheme is to wire all of those normally open, held closed switches in series with the stop switch. Use wire with insulation appropriate for the voltage involved.
[/QUOT

So Connect it to the stop button to stop the machine if the door is opened.

 

please.... before we know the nature and dangers posed by the machine, do NOT offer suggestions that are not safety rated. that is irresponsible and very misleading. machine safeguarding has own set of standards supported by laws because machines can be more than capable of inflicting harm on humans.

The ThreadStarter has already departed vastly by selecting security system switches to use for the door open sensing. So no part of the installation can come close to OSHA requirements, which are intended to protect even those bent on self destruction.
We have no idea as to what part of the world this machine is located in, while OSHA has zero authority outside of the USA. In addition, consider the nature of the technical questions posed by the TS. Clearly this is not a manufacturing plant in California.