Bühler technologies Nivotemp NT MD - Switching Output X: Definition of the Switching Characteristic

Nivotemp NT MD
5.7.1 Switching output x: Definition of the switching characteristic
The switching characteristic for the output can be configured under the following menu:
Measured variable
____
out_
Measured variable main menu
Out X
EF_
EF X
Advanced Functions
ou_
Set Out X
Definition OUTX
___
Selection menu
Hno - FM
Settings menu OUTX
The options are:
Hysteresis Function
Hysteresis function
as the NO contact
Hysteresis function
as the NC contact
NO contact or NC contact function when the output
signal is set when exceeding the configured switch-
ing point. The output signal will be deleted if the
value is below the configured switch-back point.
Here, NO contact (Hno) means the PNP switching out-
put is closed above switching point SPx and opens be-
low switching point rPx.
Here, NC contact (Hnc) means the PNP switching out-
put is open above switching point SPx and closes be-
low switching point rPx.
Also see the explanation in the drawing below.
SP
rP
Hno
(NO contact)
Hnc
(NC contact)
Hysteresis
SP
-
rP
(
)
Time t
Time t
Time t
Window function
Window function as
NO contact
Window function as
NC contact
NO contact or NC contact function defining a signal
window. When the measuring window is reached the
output signal is set and deleted upon exiting.
Here, NO contact (Fno) means the PNP switching out-
put is closed if the value is within the window. Other-
wise the switching output will be open.
Here, NC contact (Fnc) means the PNP switching out-
put is open if the value is within the window. Other-
wise the switching output will be closed.
FH
FL
Fno
(NO contact)
Fnc
(NC contact)
Time t
Time t
Time t
Window
Frequency output
Frequency output
If the output is defined as a frequency output, a
square wave signal with a frequency between 1Hz
and 100Hz proportional to the measurement will be
output.
Note:
To increase the slew rate of the square wave
signal, we recommend loading the switching output
with an load of 10kΩ.
T ≤
corresponds
to f = 1 Hz
Time t
Time t
Time t
T = 47.5 °C
corresponds
to f = 50 Hz
T ≥
corresponds
to f = 100 Hz
F ILo
F IHi
Example:
= 15 °C,
= 80 °C
with temperature T and frequency f:
F ILo
F IHi
18 Bühler Technologies GmbH BE100022 ◦ 11/2020