Parameter Functions - Xetron STC-1000Pro User Manual

3.1 Parameter Functions

3.1.1 Temperature Setting - TS, HD, CD, PV, SV
When the controller is in normal operation, the PV displays the current value; the SV displays
the set value by adjusting the TS (Temperature Set-point), HD (Heating Di erential), and CD
(Cooling Di erential) parameters (Cooling Di erential). It will switch between cooling and
heating modes.
Cooling Mode:
When PV (Current Value) ≥ TS (Temperature Set-point) + CD (Cooling Di erential), the
●
controller enters the cooling mode, the cooling icon
to output.
If the cooling icon flashes, the compressor is under protection status, please see
Protection Time - PT
When PV (Current value) ≤ TS (Temperature Set-point), the controller exits the cooling
●
mode, the cooling icon
Heating Mode:
When PV (Current Value) ≤ TS (Temperature Set-point) - HD (Heating Di erential), the
●
controller enters heating mode, the heating icon
heating outlet starts to output.
When PV (Current Value) ≥ TS (Temperature Set-point), the controller exits heating
●
mode, the heating icon
Example:
If set TS = 25°C, CD = 3°C, HD = 3°C:
Csp (Cooling start point) = TS + CD = 28°C,
Hsp (Heating start point) = TS - HD = 22°C.
When PV (current value) ≥ 28°C(Csp), the controller automatically enters cooling mode. When
PV ≤ 25°C(TS), the controller automatically exits cooling mode.
When PV ≤ 22°C(Hsp), the controller automatically enters heating mode. When PV ≥ 25°C(TS),
the controller automatically exits heating mode.
for further information.
is o .
is o .
°C / °F
28/82.4
CD (Cooling Di erential)
25/77
HD (Heating Di erential)
22/71.6
is on and the cooling outlet starts
is on and the
Csp (Cooling start point)
TS (Temperature Set-point)
Hsp (Heating start point)
6
3.1.2