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SM 431, 8AI, U/ I /THERMO, 16BIT

technical data

		SIMATIC S7-400, analog input SM 431,8 analog input; Resolution 16-bit, U/I/Thermoelectric, potential isolation connected to common potential, diagnosis, alarm, 20 ms conversion time
input current
DC 5V from backplane bus, maximum		1 200 mA
power loss
power loss, typical		4.6W
analog input
number of analog inputs		8
● voltage/current measurement		8
voltage input allowed input voltage (damage limit), maximum		35V; 35V continuous voltage, 75V within 1 s maximum (duty cycle 1:20)
current input allowable input current (damage limit), maximum		32 mA
input range
● voltage		yes
● Current		yes
● thermocouple		yes
● Resistance thermometer		no
● Resistance		no
input range (rated value), voltage
● 1V to 5V		yes
● input resistance (1V to 5V)		> 2000 Ohm
● -1v to +1v		yes
● -10V to +10V		yes
● -100 mV to +100 mV		yes
● -2.5V to +2.5V		yes
● -20 mV to +20 mV		yes
● -250 mV to +250 mV		yes
● -5V to +5V		yes
● -50 mV to +50 mV		yes
● -500 mV to +500 mV		yes
● -80 mV to +80 mV		yes
input range (rated value), current
● 0 to 20 mA		yes
● -10 mA to +10 mA		yes
● -20 mA to +20 mA		yes
● -3.2 mA to +3.2 mA		yes
● 4 mA to 20 mA		yes
● input resistance (4 mA to 20 mA)		50?
● -5 mA to +5 mA		yes
input range (rating), thermocouple
● Type B		yes
● Type E		yes
● Type J		yes
● Type K		yes
● Type L		yes
● Type N		yes
● Type R		yes
● Type S		yes
● Type T		yes
● Type U		yes
thermocouple (TC)
temperature compensation
-Internal temperature compensation		yes
-External temperature compensation using compensation box		yes
-Dynamic reference temperature value		yes
characteristic linearisation
● parameterizable		yes
-For thermocouple		type B, E, J, K, L, N, R, S, T, U
wire Length
● shielding, maximum		200 m
analog value composition at input
integration and conversion time/resolution per channel
● resolution with overmodulation (digits including symbols), maximum		16 bit
● parameterized integration time		yes
● Basic conversion time (ms)		10/16, 7/20/100
● integral time (ms)		2, 5/16, 7/20/100
● Basic conversion time, including integration time (ms)
-Additional switching time for disconnection monitoring and resistance measurement		1 ms (component)
● suppression of interference voltage at interference frequency f1 (unit Hz)		400 / 60 / 50 / 10Hz
sensor
signal sensor connection
● used for voltage measurement		yes; Possible
● current measurement as a four-wire measuring transmitter		yes
● Resistance measurement using four-wire interface		yes
error/precision
operating error limits over the entire temperature range
● voltage, related to the input range,(+/-)		0.3%
● Current, related to the input range,(+/-)		0.5%
basic error limit (Operation error limit at 25°C)
● voltage, related to the input range,(+/-)		0.1%
● Current, related to the input range,(+/-)		0.17%
alarm/diagnosis/status information
alarm
● diagnostic alarm		yes; Parameterizable
● limit value alarm		yes
potential isolation
analog Input potential isolation
● analog input potential isolation		yes; Internal/external
● between channels		yes
insulation
insulation Test, use		DC 1500V
size
width		25 mm
height		290 mm
depth		210 mm
weight
weight, about		650g

Update time：20241018150959