Siemens PLCs SIMATIC S7-300 input SM331 6ES7331-1KF02-0AB0 6ES7331-7KB02-0AB0

Siemens PLCs SIMATIC S7-300 input SM331 6ES7331-1KF02-0AB0 6ES7331-7KB02-0AB0
Siemens PLC Controller Module LOGO Series
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Article number	6ES7331-7KF02-0AB0	6ES7331-7HF01-0AB0	6ES7331-1KF02-0AB0	6ES7331-7KB02-0AB0
	SM331, 8AI, 9/12/14Bit	SM331, 8AI, 14BIT, 0,052MS/channel	SM331, 8AI, 13bit	SM331, 2AI, 9/12/14Bit
Supply voltage
Load voltage L+
● Rated value (DC)	24 V	24 V		24 V
● Reverse polarity protection	Yes	Yes		Yes
Input current
from load voltage L+ (without load), max.	30 mA	50 mA		30 mA
from backplane bus 5 V DC, max.	50 mA	100 mA	90 mA	50 mA
Power loss
Power loss, typ.	1 W	1.5 W	0.4 W	1 W
Analog inputs
Number of analog inputs	8	8	8	2
● For resistance measurement	4		8	1
permissible input voltage for voltage input (destruction limit), max.	20 V; continuous; 75 V for max. 1 s (mark to space ratio 1:20)	20 V; 20 V DC permanent, 75 V DC for max. 1 s (duty factor 1:20)	30 V; 12 V continuous, 30 V for max. 1 s	20 V; continuous; 75 V for max. 1 s (mark to space ratio 1:20)
permissible input current for current input (destruction limit), max.	40 mA	40 mA	40 mA	40 mA
Constant measurement current for resistance-type transmitter, typ.	1.67 mA			1.67 mA
Input ranges
● Voltage	Yes	Yes	Yes	Yes
● Current	Yes	Yes	Yes	Yes
● Thermocouple	Yes	No	No	Yes
● Resistance thermometer	Yes	No	Yes	Yes
● Resistance	Yes	No	Yes	Yes