KROHNE UFM 3030 Service EN - Manual (Page 16)

16 UFM 3030
3.6 Connection diagram examples
In the following, some examples of how to connect the electrical input and output signals.
Current output
Active
Ri <= 680
Ω
Passive
For supply: U = 15 – 24Vdc, I >= 22mA
Pulse output
Active Passive
R1>= 470
Ω
, R2 =
U*R1/(V+ - U)
For supply: U<= 32Vdc, <= 24Vac
Digital input
Active
Passive
For supply: U = 15 – 30Vdc, I >= 1,5 mA
Analog input