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SITRANS LR250 (HART) + RD200 + Analog Input PLC

Created by: Rizal Dwi Listio at: 12/23/2010 2:23 PM (3 Replies)

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12/23/2010 2:23 PM	Rate (0)
Rizal Dwi Listio Posts: 77 Rating: (0)	Dear all, i have LR250(HART) that connected to RD200. how to connect analog input of PLC to them. hence i can read the volume from my HMI. is it possible? thx all
Rizal Dwi Listio Posts: 77 Rating: (0)
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12/23/2010 7:30 PM	Rate (0)
Toppie Posts: 74 Rating: (3)	Seasons Greetings Rizal Dwi Listio The RD200 provides the 24VDC source supply to the LR250. The output of the LR250 is a 4 to 20mA current. You need to connect the input of the PLC and the LR250 in series to the 24VDC source (RD200). Make sure that you are using the passive input to the PLC rather than a transmitter power input. If your PLC input card only accepts voltage, you will need to use a 250 ohm resistor accross the input terminals to convert the current to 1 to 5 VDC representing 0% to 100% of level (or volume if the LR250 us configured as such). Please note that the accuracy specification for the LR250 is for level measurement, rather than vloume. Regards Toppie [ \| : )
Toppie Posts: 74 Rating: (3)
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12/24/2010 6:08 PM	Rate (0)
Rizal Dwi Listio Posts: 77 Rating: (0)	got it sir, it's very helpful
Rizal Dwi Listio Posts: 77 Rating: (0)
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12/27/2010 5:47 PM	Rate (0)
Toppie Posts: 74 Rating: (3)	Thanks for the feedback. Cheers
Toppie Posts: 74 Rating: (3)
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