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The analog input modules convert analog signals from the process into digital signals for processing within the PLC. The modules feature: Resolution from 9 to 15 bits + sign (for different conversion times), configurable Different measuring ranges; the basic current/voltage range settings are adjusted mechanically via measurement range modules. Fine adjustments are made with the STEP 7 Hardware Configuration tool on a PG. | CA 01 Analog Modules - Analog input SM 331 Analog Modules - Analog input SM 331 Overview Analog inputs For connection of voltage and current sensors thermocouples resistors and resistance thermometers Application Analog input modules can be used to connect the PLC to analog process signals. They are suitable for the connection of voltage and current sensors thermocouples resistors and resistance thermometers. Function The analog input modules convert analog signals from the process into digital signals for processing within the PLC. The modules feature Resolution from 9 to 15 bits sign for different conversion times configurable Different measuring ranges the basic current voltage range settings are adjusted mechanically via measurement range modules. Fine adjustments are made with the STEP 7 Hardware Configuration tool on a PG. Interrupt capability the modules transmit diagnostic and limit value interrupts to the programmable controller s CPU Diagnostics the module sends detailed diagnostic information to the CPU. Technical specifications 6ES7 331-7KF02-0AB0 6ES7 331-7HF01-0AB0 6ES7 331-1KF01-0AB0 6ES7 331-7KB02-0AB0 Voltages and currents Load voltage L _ Rated value DC 24 V 24 V 24 V - Reverse polarity protection Yes Yes Yes Current consumption Seite 1 von 5 CA 01 Analog Modules - Analog input SM 331 from load voltage L no load max. from backplane bus 5 V DC max. Power dissipation typical 200 mA 50 mA 1 W 50 mA 60 mA 1.5 W 90 mA 0.4 W 80 mA 50 mA 1.3 W Connection system Requisite front connector 20-pin 20-pin 40-pin 20-pin Clock synchronism Clock synchronous operation No Yes No No Analog inputs Number of analog inputs Number of analog inputs for resistance measurement Length of cable shielded max Permiss. input voltage for voltage input destr. limit max. Perm. input volt. for the current input destr. lim. max. Input ranges rated values voltages _ 0 to 10 V _ 1 to 5 V _ 1 to 10 V _ -1 V to 1 V _ -10 V to 10 V _ -2.5 V to 2.5 V _ -250 mV to 250 mV _ -5 V to 5 V _ .
