Control Parameters - Danfoss ECL Comfort 210 Installation Manual

Installation Guide

6.6 Control parameters

Motor pr. (motor protection)
Circuit
2
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.
OFF:
Motor protection is not activated.
10 ... 59: Motor protection is activated after the set activation
delay (minutes).
Xp (proportional band)
Circuit
2
Set the proportional band. A higher value will result in a stable but
slow control of the flow temperature.
Tn (integration time constant)
Circuit
2
Set a high integration time constant to obtain a slow but stable
reaction to deviations.
A low integration time constant (in seconds) will make the
controller react fast but with less stability.
M run (running time of the motorized control valve)
Circuit
2
'M run' is the time in seconds it takes the controlled component
to move from fully closed to fully open position. Set the 'M run'
according to the examples or measure the running time by means
of a stop watch.
136 DEN-SMT/DK
ECL Comfort 210 / 310, application A275 / A375
12174
Setting range Factory setting
OFF / 10 ... 59 m
12184
Setting range Factory setting
5 ... 250 K
12185
Setting range Factory setting
1 ... 999 s
12186
Setting range Factory setting
5 ... 250 s
OFF
80 K
30 s
How to calculate the running time of a motorized control valve
The running time of the motorized control valve is calculated using
the following methods:
50 s
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.
VI.GU.L1.02
Danfoss District Energy