Danfoss VLT Micro Drive PK18 Design Manual page 18

Safety and Conformity
Cooling section Heating section
-
Return
Flow
Return
Control
3-Port
valve
Valve
posi-
Bypass tion
Pump
M
x6
Starter
Fuses
LV
supply
P.F.C
Mains
2.5.10 With a Frequency Converter
Cooling section
-
Return Flow Return
Pump
M
x3
VLT
Control
temperature
0-10V
or
0/4-20mA
Mains
Illustration 2.6 Fan System Controlled by Frequency Converters
VLT Micro Drive Design Guide
Inlet guide vane
+
Flow
Control
3-Port
valve
Valve
posi-
Bypass
tion
IGV
Motor
Pump
M
or
actuator
x6
Starter
Control
Fuses
LV
supply
P.F.C
Mains
Heating section
Fan section
Fan
M
+
Flow
Pump
M
x3
VLT VLT
Control
temperature
0-10V
or
0/4-20mA
Mains
Mains
®
MG02K102 - VLT is a registered Danfoss trademark
Fan section
Fan
M
Mechanical
linkage
and vanes
x6
Starter
Power
Factor
Correction
Mains
x3
Pressure
control
0-10V
or
0/4-20mA
Supply
air
V.A.V
Sensors
outlets
PT
Duct
Local
Main
D.D.C.
B.M.S
control
Temperature
control
signal
Pressure
0/10V
control
signal
0/10V
Supply
air
V.A.V
Sensors
outlets
PT
Duct
Local
Main
D.D.C.
B.M.S
control
2 2
17