Samson TROVIS 5431, Mounting And Operating Instructions

Page: 36 / 102

5 Functional descriptions
It is absolutely required that you be familiar
with the operation of the controller and know
how to adjust function blocks, function
parameters and parameters.
5.1 Inputs
5.1.1 Selecting the sensor (CO-SYS F02)
The heating controller can process either sen-
sor signals from PTC sensors or from Pt 1000
sensors. You are required to determine the
sensor used in function block CO-SYS F02.
Activation, i.e. F02-1, means you are using
PT 1000 sensors; deactivation, i.e. F02-0,
means you are using PTC sensors.
5.1.2 Calibrating the sensor (CO-SYS F08)
You can adjust the measured values of all
connected sensors. When calibrating a sen-
sor, the currently displayed sensor value must
be changed to match the temperature value
(reference value) measured directly at the
point of measurement. To calibrate the sen-
sor, proceed as follows.
1. On the CO-SYS level, select function
block F08-1!
2. Press the enter key. The outdoor
sensor is indicated together with its
temperature value.
3. Use the arrow keys to select the sen-
sor you want to calibrate (sensor
symbol is indicated on the display,
see page 85).
5. Press the enter key. This lets you
access the calibration mode for the
selected sensor. The sensor symbols
are now blinking!
6. Use the arrow keys to set the refer-
ence value!
7. Press the enter key. This acknowl-
edges the new value, and the next
sensor symbol appears on the dis-
play.
8. Repeat steps 3. to 6., if you need to
calibrate other sensors.
9. Exit the CO-SYS level!
5.1.3 Binary input for storage tank thermostat
See chapter 5.5.1.
5.1.4 Analog input AI (CO1 F08; CO-SYS F10, F11)
You can either connect the outdoor tempera-
ture or an external set point ( external
request) to the analog input AI. If you acti-
vate function block CO1 F08-1, the outdoor
36
EB 5431 EN
Functional descriptions