VI.KT.G6.02
26 | © Danfoss | 2016.05
Maintenance
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) 6187
Setting range Factory setting
1 ... 9 K 3 K
Set the acceptable ow temperature deviation.
Set the neutral zone to a high value if you can accept a high variation in ow
temperature. When the actual ow temperature is within the neutral zone, the controller
does not activate the motorized control valve.
The neutral zone is symmetrical around the desired ow temperature value, i.e. half the
value is above and half the value is below this temperature.
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