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The ELCM-AN04ANNN analog input module supports 4 analog input channels (either voltage or current) and converts these signals into 16-bit digital data. You can select voltage inputs or current inputs by the way you connect your inputs. In addition, you can access the data in the module by using the FROM/TO instructions, or read the average value of channels directly by using the MOV instruction (Please refer to allocation of special registers D9900 ~ D9999).
Note 5: If the ripples at the loaded output terminal are large enough to cause noise interference on the wiring, connect a 0.1 ~ 0.47μF 25V capacitor as shown. I/O Terminal Layout VI1- VI2- VI3- ELCM-AN04ANNN (4AI) VI4- Note: Use 12-28 AWG single-core bare wire or multi-core (stranded) wire for the I/O wiring. The ELCM terminal screws should be tightened to 4.75 kg-cm (4.12 in-lbs) and please use 60/75°C copper conductor only.
Analog / Digital Voltage input Current input module Self-diagnosis Upper and lower bound detection in all channels Optical coupler isolation between digital circuits and analog circuits. No isolation among analog channels. 500VDC between digital circuits and Ground Isolation method 500VDC between analog circuits and Ground 500VDC between analog circuits and digital circuits 500VDC between 24VDC and Ground ...
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CR# Attrib. Register name Explanation #34 O R/W Adjusted Gain value of CH1 Set the adjusted Gain value in CH1 ~ CH4. Default = K16,000 #35 O R/W Adjusted Gain value of CH2 Definition of Gain: The corresponding voltage (current) #36 O R/W Adjusted Gain value of CH3 input value when the digital output value = 16,000.
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Explanation on Special Registers D9900~D9999 When ELCM-PH/ELCM-PA controllers use expansion I/O modules, registers D9900~D9999 will be reserved for storing values from these modules. You can apply the MOV instruction to access values in D9900~D9999. When ELCM-PH/ELCM-PA controllers use ELCM-AN04ANNN analog input modules, special registers are configured as shown below: Module Module...
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Equation for current input Mode6: 0.5μA = 16mA/32,000 Adopt the Equation of current input Mode4/Mode5, substitute Gain for 19200 (12mA) and Offset for 6400 (4mA) Y=Digital output, ...
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Mode 4: +32384 +32000 Digital output +16000 -20mA 10mA 20mA Offset Gain -16000 Current input -32000 -32384 Mode 4 of CR#2 ~ CR#5 -20mA ~ +20mA, Gain = 10mA (16,000), Offset = 0mA Range of digital conversion -32,000 ~ +32,000 Max./Min.
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