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Pls help to assist for 4 to 20 mA setting.

Created by: liew at: 12/20/2010 4:33 PM (4 Replies)

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12/20/2010 4:33 PM	Rate (0)
liew Posts: 32 Rating: (0)	Hi expert Lifrasil, Helmut_13, Betel and LOGO!Barbarian, I have kilowatt / power transducer and output is 4 to 20 mA. 4 mA = -1250 kW 12 mA = 0 kW 20 mA = *+ 1250* kW My question is: - 1.) How to hook up wiring in different -VE between AM2 and kilowatt transducer???. 2.) Use special funtions analog threshold trigger, let say, Trigger On *from negative 1250 kW to positve 250 kW or 350kW.* Trigger OFF from positive 250 kW or 350 kW to positive 1250 kW. What is the value for trigger on and trigger off for the above example ??? Hope to hear from your all soon. Thanks and merry christmas to all. Best Regards, liew nelson
liew Posts: 32 Rating: (0)	Last edited by: liew at: 12/21/2010 8:43 PM
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12/21/2010 8:42 AM	Rate (0)
Helmut_13 Posts: 2930 Rating: (432)	Hi, if would think a view minutes more, then you may find the sollution. Easy: Usea analog amplifier (4..20mA Sensor, range: min: -1250, max: 1254), followed by an Analog threshold trigger. Settings ON: 0, Off: 250 (350). Good look
Helmut_13 Posts: 2930 Rating: (432)
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This contribution was helpful to 2 thankful Users liew parekoyy

12/21/2010 10:47 AM	Rate (0)
liew Posts: 32 Rating: (0)	Hi, Thanks for your reply, My question; , 1.) How to hook up wiring in different -VE between AM2 and kilowatt transducer???. 2.) Use special funtions analog threshold trigger, let say, Trigger On from -1250 to 250 kW or 350kW. Trigger OFF from 250 kW or 350 kW to +1250 kW. What is the value special function ANALOG THRESHOLD for trigger on and trigger off for the above example ??? Hope to hear from your all soon. Best Regards, Nelson
liew Posts: 32 Rating: (0)
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1/4/2011 8:55 PM	Rate (0)
Betel Platinum Member Joined: 1/5/2007 Last visit: 4/7/2023 Posts: 1690 Rating: (577)	Hi Liew, see the files in the attachment to answer your questions. The EXCEL-files helpto calculate the parameters for the LOGO! ...(liew_A) is a solution for one amplifier, bat the calculation includs rounding-errors. ...(liew_B) is a better solution without rounding-errors....look at the DEMO-circuit.... Best regards Betel Attachment DEMO_Schaltplan_liew.zip (177 Downloads)
	==> Meine TAG-Listen: "deut." ==> "Sammlung von Hinweisen und Schaltungen" ==> "PD-3-Punkt-Schritt-Regelung (z.B. für Mischer)" ==> "Zeiterfassung, ASTRO-Uhr,..." ==> "Meine EXCEL-Tools" + "Tool zur Linearisierung" ==> "Komplexes Rechnen mit der LOGO"
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This contribution was helpful to 1 thankful Users liew

1/5/2011 2:19 PM	Rate (0)
liew Posts: 32 Rating: (0)	Hi Expert Betel, Thanks very much expert Betel and happy new year 2011 liew nelson.
liew Posts: 32 Rating: (0)
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