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open coolector connection to PLC input

Created by: m.najib at: 6/12/2010 2:22 PM (3 Replies)

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6/12/2010 2:22 PM	Rate (0)
m.najib Posts: 4 Rating: (0)	Hi, I have three dirves with open connector output for fault indication. Can sombody tell me if its possible and how to connect three of them to one PLC input. also if some one could help me to make a function block for 0-10 V analoge output. Thanks
m.najib Posts: 4 Rating: (0)
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6/13/2010 7:35 AM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 12/31/2025 Posts: 10239 Rating: (1183)	m.najib Hi, I have three dirves with open connector output for fault indication. Can sombody tell me if its possible and how to connect three of them to one PLC input. ... Hello, The idea is if one of them is 1 to receive in CPU fault. You need 3 relays. Each drive will energize one relay. You could use after NO or NC contacts from each relay (depends from logic) which all three will be connected in series to the digital input of the CPU. Best regards, Hristo Mihalev

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6/13/2010 8:28 AM	Rate (0)
AMAZINGAHMED Posts: 719 Rating: (88)	m.najib Hi, also if some one could help me to make a function block for 0-10 V analoge output. If you're using S7-300, you should try FC105 "Scale" and FC106 "Unscale".
AMAZINGAHMED Posts: 719 Rating: (88)
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6/13/2010 9:04 AM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 12/31/2025 Posts: 10239 Rating: (1183)	Hello AMAZINGAHMED, And in case of using S7-1200 PLC (Conference' title) these are... Best regards

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