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| 4/17/2008 5:36 AM | |
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Posts: 17 Rating:
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Hi everyone!!! I just want to ask if the CPU 224XP onboard analog input can handle 4-20mA. Thanks, Kid, BISAYA |
| 4/17/2008 7:23 AM | |
Joined: 9/27/2006 Last visit: 11/10/2024 Posts: 12293 Rating:
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Hello Bisaya; Sorry, no, they only handle 0-10V; see the following extract from the Technical Specs of the CPU244XP, from the S7-200 System Manual: CPU 224XP Analog Input Specifications General Analog Input (CPU 224XP) Number of inputs 2 points Analog input type Single-ended Voltage range 0-10 VData word format, full scale range --32,000 to +32,000 DC Input impedance >100 Kｶ Maximum input voltage 30 VDC Resolution 11 bits plus 1 sign bit LSB value 4.88 mV Isolation None Accuracy Worst case 0 to 55 C Typical 25 C }2.5% of full scale }1.0% of full scaleRepeatability }0.05% of full scaleAnalog to digital conversion time 125 msec Conversion type Sigma Delta Step response 250 ms max. Noise rejection --20 dB @ 50 Hz typical |
Last edited by: dchartier at: 4/17/2008 7:29 AM |
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| 4/17/2008 8:41 AM | |
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Posts: 17 Rating:
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Hi dchartier, Thanks a lot for the info. Bisaya |
| 3/3/2010 8:17 AM | |
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Posts: 20 Rating:
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Which PLC gives analog input.. I also have to use analog current input. |
| 3/3/2010 4:30 PM | |
Joined: 5/4/2009 Last visit: 5/28/2024 Posts: 914 Rating:
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Hi... You have to use an EM231 to achieve this goal. Regards. Tomy the master. |
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Aim Higher |
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| 3/4/2010 3:14 AM | |
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Posts: 23 Rating:
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I think I can series 250ohm resistor， like inside circuit of EM231. Then we got 1-5V voltage. The accuracy depend on accurate resistor and resistor of connection. |
| 3/12/2010 3:16 PM | |
Joined: 6/26/2009 Last visit: 11/6/2024 Posts: 122 Rating:
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I always use a 499 ohm resistor in parallel .(error only 0.2 % ) Gives me 2-10 volt |
| 3/12/2010 8:14 PM | |
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Posts: 53 Rating:
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Agree, 560Ohm or 470Ohm 1/4Watt works fine. |
| 7/17/2014 10:57 AM | |
Joined: 3/25/2013 Last visit: 3/21/2019 Posts: 176 Rating:
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New question split intoHow to give input supply for cpu224?. With best regards, Narrator1
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