ZIEHL-ABEGG Ucontrol PXDM35A - Functional Diagrams Temperature Control

Handbook Ucontrol type-lines PXDM Date 06/04
TBL02_55-GB06/04 Part.-No. 00153239-GB
Page 35 / 105
8.3.4 Functional diagrams temperature control
Example 1:
Temperature control in factory setting „Cooling function“ (Controller Setup: Ist>Soll= n+
ON)
At difference temperature control (mode
2.05 sensor value at E2 over sensor value at E1)
Example 2 :
Temperature control in „Heating function“ (Controller Setup: Ist>Soll= n+
OFF)
For difference temperature control (mode
2.05 sensor value at E2 under sensor value at E1)
The switching-off of the motor voltage at a controlled variable under 15 % (back ON at a controlled
variable of 20%) is not discernable in the modulation display.
Idealized principle diagram
Min. S
p
eed
100 %
50 %
U Motor
Actual value
Min. Speed = 0 % Max. speed = 100 %
Min. Speed = 35 % Max speed = 85 %
Setpoint
20 °C
Pband
10 K
30 °C
Iidealized principle diagram
Max. Speed
Min. Speed
100 %
50 %
U Motor
Actual value
Min. Speed = 0 % Max. Speed = 100 %
Min. Speed = 35 % Max. Speed = 85 %
Setpoint
20 °C
Pband
10 K
10 °C