http://www.hoyles.com/acatalog/interguard-...ck-airlock.html

Dave,

Please can you draw something for me based on the explanation you gave?

Regards,

Akeem

http://www.hoyles.com/acatalog/interguard-...ck-airlock.html

Bit pricey there Ian.

Why not use a couple of keypads -ActSmart2 1090 for example,(yes, i would suggest that) a lot cheaper and the added bonus of extra security.

Hi Dave,

Based on your comments, are you saying I should not worry about Alan's advice because we're using the Maglock contact? - "i'd be concerned about inductive load of the magnet (or release) and current passed through the reeds in to them"

Regards,

Akeem

Hi Dave,

Based on your comments, are you saying I should not worry about Alan's advice because we're using the Maglock contact? - "i'd be concerned about inductive load of the magnet (or release) and current passed through the reeds in to them"

Regards,

Akeem

Think you'll find Dave is assuming monitored mags.

Personally, i'd still be tempted to go the keypad route has it gives a level of security whilst providing the interlock.

You also need to consider the users. With buttons only they will be trying to press buttons before the doors lock. The keypads add in a short delay (entering the PIN) allowing the doors to close.

Edited October 23, 200718 yr by barooga

Hi Dave,

Based on your comments, are you saying I should not worry about Alan's advice because we're using the Maglock contact? - "i'd be concerned about inductive load of the magnet (or release) and current passed through the reeds in to them"

Regards,

Akeem

The excellent drawing supplied by myself is a very simple way of achieving your aim using the mag-lock contacts it will work fine.

The excellent drawing supplied by myself is a very simple way of achieving your aim using the mag-lock contacts it will work fine.

And modest too.

Think you'll find Dave is assuming monitored mags.

Personally, i'd still be tempted to go the keypad route has it gives a level of security whilst providing the interlock.

You also need to consider the users. With buttons only they will be trying to press buttons before the doors lock. The keypads add in a short delay (entering the PIN) allowing the doors to close.

when using that drawing design your also strongly advised to fit 'snubber' diodes as close to each maglock 12 volts in as possible, to reduce the inductive 'kick' when the mag is powered up/down that will prolong the life of the reeds. connect the banded end of a 1N4001 diode to the + volts in connection, with the other end to the negative input.

the design will work, but for me long term reliability is always very key as i have a zero tolerence to any possible faults. as such i would not advise anything else other than use relays to operate the maglocks for what they cost. feeding the relay coils via the maglock reed contacts (assuming not hall effect) or use heavier duty microswitch type contacts operating directly on the door leaves using the drawing.

regs

alan

daveboy that drawing looks like the road map to my house. lol.

if your worried about the reeds put some relays in, use the reeds to power the coil of the relay as there is no load for them wire 0v through mag lock reed to relay coil and have it do what the reeds were doing.