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Emergency stop on Logo! 24CE

3/5/2015 9:31 AM	Rate (0)
borostyan Posts: 2 Rating: (0)	Hi, Logo! 24CE (transistor outputs). How can I use an "Emergency Stop Push Button" in this case?
borostyan Posts: 2 Rating: (0)
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3/5/2015 1:17 PM	Rate (0)
Toeternietoe Platinum Member Joined: 12/27/2006 Last visit: 11/17/2025 Posts: 1200 Rating: (116)	How safe must it be? What are the consequences when its going wrong Is it dangeroes or not: Transistor outputs are NEVER for a emergency stop on dangeroes machines etc.

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3/5/2015 4:32 PM	Rate (0)
borostyan Posts: 2 Rating: (0)	I just missing a separate +24V for transistor outputs. Easy has the V24vq (see easy_tr_out.jpg), so this can be interrupted by an emergency stop. Attachment easy_tr_out.jpg (336 Downloads)
borostyan Posts: 2 Rating: (0)
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3/5/2015 5:38 PM	Rate (0)
LOG!C Posts: 10 Rating: (0)	You cannot use any PLC as an emergency stop interface. PLC can get crazy sometimes due to interferences, shock etc. You have to use an independent realy system or a safety relay (like Siemens Sirius http://w3.siemens.com/mcms/industrial-controls/en/safety-systems/pages/default.aspx)
LOG!C Posts: 10 Rating: (0)
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