kenny_Powers
Member
Hello everybody.
for an asignment we are using a s7 1200 siemens starterkit to connect sensores to create a program. we were hoping to save some money and connect 16 analog npn diffuse sensores to the digital input add on. i understand that we have to connect the sensores to a 24v supply and ground, but is it possible to connect the 300mA output of the sensores to the digital input on the plc, and if not what is the cheapest way to change it so this is possible?
this information is from the di add-on data sheet.
● Type of input voltage DC
● Rated value (DC) 24 V
● for signal "0" 5 V DC at 1 mA
● for signal "1" 15 VDC at 2.5 mA
Input current
● for signal "0", max. (permissible quiescent
current)
1 mA
● for signal "1", min. 2.5 mA
● for signal "1", typ. 4 mA; Typical
thank you in advanced
for an asignment we are using a s7 1200 siemens starterkit to connect sensores to create a program. we were hoping to save some money and connect 16 analog npn diffuse sensores to the digital input add on. i understand that we have to connect the sensores to a 24v supply and ground, but is it possible to connect the 300mA output of the sensores to the digital input on the plc, and if not what is the cheapest way to change it so this is possible?
this information is from the di add-on data sheet.
● Type of input voltage DC
● Rated value (DC) 24 V
● for signal "0" 5 V DC at 1 mA
● for signal "1" 15 VDC at 2.5 mA
Input current
● for signal "0", max. (permissible quiescent
current)
1 mA
● for signal "1", min. 2.5 mA
● for signal "1", typ. 4 mA; Typical
thank you in advanced
Last edited: