Danfoss ECL Comfort 110 User Manual, Installation & Maintenance page 14

Control param. (control parameters)
Motor prot. (motor protection)
Setting range
OFF / 10 ... 59 min.
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.
Typically used for DHW applications. Can also be used for heating systems at very low load.
Xp (proportional band)
Setting range
1 ... 250 K
Set the proportional band. A higher value will result in a stable but slow control of the
flow temperature.
Tn (integration time constant)
Setting range
5 ... 999 sec.
Set a high integration time constant to obtain a slow but stable reaction to deviations.
A low integration constant will make the controller react fast but with less stability.
M1 run (running time of the motorized control valve)
Setting range
5 ... 250 sec.
'M1 run' is the time it takes the controlled unit to move from fully closed to fully open
position. Set the 'M1 run' according to the example.
26 VI.KT.G2.02
6000
6174
Factory setting
OFF
6184
Factory setting
80 K
6185
Factory setting
30 sec.
6186
Factory setting
35 sec.
© Danfoss 05/2007 DH-SMT/DK
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:
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.
Nz (neutral zone)
Setting range
1 ... 9 K
Set the acceptable flow temperature deviation.
Set the neutral zone to a high value if you can accept a high variation in flow
temperature. When the actual flow temperature is within the neutral zone, the controller
does not activate the motorized control valve.
The neutral zone is symmetrical around the desired flow temperature value, i.e. half the
value is above and half the value is below this temperature.
VI.KT.G2.02
DH-SMT/DK
6187
Factory setting
3 K
© Danfoss 05/2007
27