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Scaling Question

Created by: Controls_Guy at: 8/16/2007 8:09 PM (27 Replies)

Rating (7)

Thanks 1

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28 Entries

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4/7/2009 9:27 PM	Rate (0)
Betel Posts: 1690 Rating: (584)	Hi BellLogo, i think your project can not solve with LOGO!, because the AQ2 module (witch you can by now) is only build to output 0 to 10 V, butnot mA. Siemenswill build a new one with volt and mA output, but i do not know the time... All circuits with use a multiplexer can only use with LOGO! modules series 0BA5 and 0BA6! If available a new AQ2 with mA, then you need one amplifiverto translate your 0,5 V..4,0 V input to a 4..20 mA output: 0,5 V means 50 LOGO! units, 4 V means400 LOGO! units, 4 mA means 200LOGO! units and 20mA means 1000LOGO! units --> GAIN = 2,28 and OFFSET = 86 The or one multiplexer directbefore the output should be inclouded to save the output and cut the analoge values to the range 0..1000 LOGO! units! Best regards Betel
Betel Posts: 1690 Rating: (584)
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4/7/2009 10:14 PM	Rate (0)
BelLogo Posts: 4 Rating: (0)	Hello Betel, Thanks for your quick reply. I mean with expansion module 6ED1 055-1MM00-0BA1 (AM2 AQ) or this link. In the datasheet it say it had 4-20mA output. But i have here a AM2 AQ module with me (see photo attachment) and it had NO 4-20mA output. Do you have any explanation or maybe has AM2 4-20mA output? I don't have AM2, but i have also a AM2 PT100 and this has no 4-20mA output. I have also checked my Logo supplier site and it say also that AM2 have 4-20mA output. See here and here (there are different price for AM2, weird?) Maybe is this already 7th generation Logo? This is my supplier site text: ---------------------- Siemens LOGO! 7th Generation Seventh Generation LOGO! The 7th Generation LOGO! brings you additional features aimed at keeping the LOGO! at the forefront of this technology. The new generation LOGO! 0BA6 features yet another decisive advantage: the possibility to connect an additional text display without communication module proves highly convenient for the projecting and display of operator relevant messages. The text display has been precisely optimized to the needs of a logic module and can be projected with the same function block as the internal display. Moreover, the performance of the basis module has been enhanced by more than 50 percent to 200 function blocks. Thus, even more applications can be replaced through more cost-effective LOGO! configurations, and savings potential can be tapped. Major improvements over previous LOGO! units include: LOGO! TD device directly connectable to all ..0BA6 basic modules Display with adjustable permanent backlight (on-board and/or TD) Up to 50 message text blocks (on-board and/or TD) New integrated PWM functions Simple bar-graph functionality Text-ticker functionality 4 analogue inputs (0-10V) - instead of 2 4 (5 kHz) fast counter inputs - instead of 2 (2 kHz) Analogue output 0 - 20 mA or 4 – 20mA 10 different on-board languages (GE, EN, FR, IT, ES, CN, JAP, TR, RUS and NL) ----------------------------- I am confused. Any idea? Best regards, BelLogo Attachment 20090407-foto-logo.jpg (1060 Downloads)
BelLogo Posts: 4 Rating: (0)	Last edited by: BelLogo at: 4/7/2009 10:37 PM Last edited by: BelLogo at: 4/7/2009 10:34 PM update text
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4/8/2009 9:40 PM	Rate (0)
Betel Posts: 1690 Rating: (584)	Hi BellLogo, sorry, but my infos at my last answer to you ar right. Look at the SIEMENS support page HERE- ther are the correct infos, but at some other Siemens product pages ther are wrong (or mixt) infos!? The old AM2 AQ module with the number 6ED1 055-1MM00-0BA0 can buy now, but it has only 0..10 V outputs The future AM2 AQ module with the number 6ED1 055-1MM00-0BA1 can´t by now (but perhaps in the summer of 2009?), but it has 0..10 V and 0(4)..20 mA outputs Best regards Betel
Betel Posts: 1690 Rating: (584)
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4/12/2009 3:21 AM	Rate (0)
BelLogo Posts: 4 Rating: (0)	Hello Betel, I have already able to buy the last AM2 AQ 6ED1 055-1MM00-0BA1, i have here with me, see attachment photo. Siemens Belgium told me it exists already for a while. My program is also ready and tested, tanks for your assistance. I have 2 versions, 1 with 0-20mA and 1 with 4-20mA output It someone is interest in my program, it is in the attachment. I have some question. 1. Is it correct that input I7 and I8 correspond with AI1 and AI2, input I1 and I2 correspond with AI3 and AI3 in LOGO!Soft,independent from the parameter settings 2 or 4AIs (Menu > File > Properties > Parameter Tab). is this correct? 2. Do Logo support only 2 analog output? 3. What is the function of "Protection Active" in functions block settings screen? 4. Communication between the Logo Basic module, the expansion module and the TD screen is that RS232 or TTL? Best regards, BelLogo Attachment 20090413 FORUM 05-4V to 04-20mA.zip (726 Downloads)
BelLogo Posts: 4 Rating: (0)	Last edited by: BelLogo at: 4/13/2009 9:53 AM Last edited by: BelLogo at: 4/13/2009 2:17 AM Last edited by: BelLogo at: 4/12/2009 4:39 PM
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4/13/2009 11:00 PM	Rate (0)
Betel Posts: 1690 Rating: (584)	Hi BellLogo, here my short answers: to 1: Yes, that is this correct. to 2: Yes, Logo supports only 2 analog outputs. to 3: If the LOGO! is in the RUN modus (circuit works), then it is possible to change the parameters of function blocks: Handbook chapter 5..: " Parameter assignment refers to the configuration of the block parameters. You can set delay times for time functions, the switching times of timers, counter threshold values, the monitoring interval of an hours counter, the on and off thresholds of the trigger, and more. You can configure the parameters • In programming mode • In parameter assignment mode In programming mode, the author of the circuit program also sets the parameters Parameter assignment mode allows the editing of parameters without having to modify the circuit program. This feature is available so that you can edit parameters without having to change to programming mode. The advantage: The circuit program remains protected, but can be adapted by the user to meet specific requirements. Selecting parameter assignment mode Press ESC to change from RUN to parameter assignment mode: To select a parameter: 1. On the parameter assignment menu, select ’Set Param’, use cursor-keys to select a block-number...." BUT it the function "Protection Active" in functions block settings screen ic ON, then it is NOT possible to change the block parameters in tne LOGO!-RUN modus !!! to 4: The communication between the Logo Basic module and the TD screen is RS-485 But for the communication between the Logo Basic module and the expansion modules i dont know the typ of signals or the protocol, sorry. Best regards Betel
Betel Posts: 1690 Rating: (584)
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4/14/2009 12:50 AM	Rate (0)
BelLogo Posts: 4 Rating: (0)	Ok, thanks for your reply and assistance.
BelLogo Posts: 4 Rating: (0)
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4/23/2012 5:39 PM	Rate (0)
Betel Posts: 1690 Rating: (584)	Hello at all witch have questions to scaling input values, the newest version of my MS-EXCEL tool you find under the link Calculation of GAIN and OFFSET for analoge amplifier V3 Best regards Betel
Betel Posts: 1690 Rating: (584)
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4/3/2017 4:22 PM	Rate (0)
Min_Moderator Posts: 4757 Rating: (122)	New question published by mipege is split to a separate thread with the subject Gain and offset for scaling. Best regards Min_Moderator
Min_Moderator Posts: 4757 Rating: (122)
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