Danfoss ECL Comfort 310 Operating Manual page 91

Operating Guide ECL Comfort 310, application A377
MENU > Settings > Control parameters
Motor pr. (motor protection)
Prevents the controller from unstable temperature control (and resulting
actuator oscillations). This can occur at very low load. The motor protection
increases the lifetime of all involved components.
See Appendix "Parameter ID overview"
OFF: Motor protection is not activated.
Value: Motor protection is activated after the set activation
delay in minutes.
MENU > Settings > Control parameters
Xp (proportional band)
See Appendix "Parameter ID overview"
Set the proportional band. A higher value will result in a stable but
slow control of the flow temperature.
MENU > Settings > Control parameters
Tn (integration time constant)
See Appendix "Parameter ID overview"
Set a high integration time constant (in seconds) to obtain a slow
but stable reaction to deviations.
A low integration time constant will make the controller react fast
but with less stability.
MENU > Settings > Control parameters
M run (running time of the motorized control valve)
'M run' is the time in seconds it takes the controlled component to move
from fully closed to fully open position.
See Appendix "Parameter ID overview"
Set the 'M run' according to the examples or measure the running
time by means of a stop watch.
VI.GU.F6.02
1x174
Recommended for duct systems with variable load.
1x184
1x185
How to calculate the running time of a motorized control valve
1x186
The running time of the motorized control valve is calculated using
the following methods:
Seated valves
Running time = Valve stroke (mm) x actuator speed (sec. / mm)
Example: 5.0 mm x 15 sec. / mm = 75 sec.
Rotating valves
Running time = Turning degrees x actuator speed (sec. / degr.)
Example: 90 degr. x 2 sec. / degr. = 180 sec.
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