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analog to drive help

5/23/2011 8:40 PM	Rate (0)
michael gilbert Posts: 3 Rating: (0)	Could any please help me with this problem how do i use (OM-O) to supply 4-20ma to my drive. I have tried every thing I know to do. I convert my IW using scalex and norm, this works well I have no problem with input. Im just not sure how to or what to I need to do to get It to IW96 I am also not sure how to wire this Do I run two wires directly to drive from OM-O or is there other wiring I need Please help, post me a quick program and wiring diagram so I cant get it wrong. I have tried everything I know and the boss is on my but. Thanks Everyone
michael gilbert Posts: 3 Rating: (0)
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5/24/2011 7:28 AM	Rate (0)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 11/18/2024 Posts: 5697 Rating: (715)	Please give us the details off the hardware you use, Best regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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5/24/2011 12:59 PM	Rate (0)
michael gilbert Posts: 3 Rating: (0)	Thanks Marcjan The cpu is s-7 1214 dc/dc/rly 24vdc and 1 analog SM1234 WITH 4 iw and 2 QW I will send the 4`20ma to a yaskawa drive to control speed. I will let the drive do PID I just dont understand how to do s7basic pid. thanks again so much.
michael gilbert Posts: 3 Rating: (0)
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5/24/2011 2:08 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 11/19/2024 Posts: 15406 Rating: (2446)	On the 4 IW / 2 QW, configure the analog out for 0-20 mA. Scale your output signal for 4-20mA. Alternately, you can get a current loop controller. Something that accepts 0-20mA input and 4-20mA output.
	science guy
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5/24/2011 3:17 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 11/1/2024 Posts: 10229 Rating: (1181)	Hello, Concerning drive setttings! It is important to set in yaskawa drive the setpoint channel parameter in order to react when receive value between 4-20mA scalled in CPU. Also to assign what will correspond to 20mA...Most probably you will need to assign there START/STOP and PRESET ON (or similar) signals' channels... Best reagrds, Hristo Mihalev .

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5/25/2011 1:21 AM	Rate (0)
michael gilbert Posts: 3 Rating: (0)	huggy sorry for my ignorance but I just dont understand how to scale the output. I just started using PLC in the past 3 or so months I have used analog controllers in the past to control drives. We changed to PLC to help control cost. I was hoping I could control several drives with one PLC.
michael gilbert Posts: 3 Rating: (0)
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5/25/2011 8:15 AM	Rate (0)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 11/18/2024 Posts: 5697 Rating: (715)	Here you can find an example how to scale/ unscale. /tf/WW/en/Posts/31698#top Best regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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