Temperature Inputs Pt1 And Pt2 - Pepperl+Fuchs Bebco EPS 5500 Series User Manual

5500 S M  P
erieS anual

4.8. Temperature Inputs PT1 and PT2

To Activate this Function
1.
Enter the number of PT100s into the menu with the correct number of sensors
connected to the input.
2.
Select ENABLED in the TEMP ENABLED selection menu.
3.
All values are entered in degrees Celcius. (Fahrenheit is not available.)
TEMP PT1 SV, TEMP PT2 SV
When the temperature on the PT100(s) is greater than the user set value, the SV contact is energized.
The manifold will be energized and the purge flow will begin to flush out the cabinet to allow for cooling.
The SV contact remains energized until temperature falls to 3 °C below this set temperature.
TEMP PT1 K2, TEMP PT2 K2
If the temperature within the enclosure continues to increase because the SV valve is not efficient
enough to cool, this second trip point can be used to activate K2 when K2 is programmed for TEMP AL
(temperature alarm). This can be used to control a secondary cooling device or as a warning. K2 (TEMP
ALARM) contact remains energized until temperature falls to 3 °C below this set temperature.
TEMP PT1 K1, TEMP PT2 K1
If the temperature rises above this set point. K1 will de-energize and the LCD will display OVER TMP,
indicating over temperature. A RESET must be done to get the system to operate again. The RESET will
work only when the temperature goes below the user-set temperature value. Depending on the program
used, the RESET will cause the system to re-purge or CLEAN out the enclosure.
Note
If TEMP ENABLE is off, the number of PT110s is '0', and a PT100 is connected to
one of both of the inputs, the PT100 LED will turn on. This is to indicate that there is
something not correct with the temperature setup of this system. The system will still
operate, but the LED will remain illuminated until the issue is corrected.
58
rograMMing
TEMP Pt1...2 TEMP Pt1...2
SV K2
SET SET
SV TEMP K2 TEMP
XXXC XXXC
TEMP Pt1...2
K1
SET
K1 TEMP
XXXC