Q3-4 Application Settings
Q3-40 Fan Functions
Q3-41 Pump Functions
Q3-42 Compressor Functions
Par. 22-20
Low Power Auto Set-up
Par. 5-12
Terminal 27 Digital Input
Par. 22-43
Wake-up Speed [Hz]
Par. 5-13
Terminal 29 Digital Input
Par. 22-44
Wake-up Ref./FB Difference
Par. 22-45
Setpoint Boost
Par. 22-43
Wake-up Speed [Hz]
Par. 22-46
Maximum Boost Time
Par. 1-86
Trip Speed Low [RPM]
Par. 22-44
Wake-up Ref./FB Difference
Par. 1-87
Trip Speed Low [Hz]
Par. 22-45
Setpoint Boost
Par. 22-27
Dry Pump Delay
Par. 22-46
Maximum Boost Time
Par. 22-80
Flow Compensation
Par. 22-81
Square-linear Curve Approximation
Par. 2-16
AC Brake Max. Current
Par. 22-82
Work Point Calculation
Par. 22-83
Speed at No-Flow [RPM]
Par. 22-84
Speed at No-Flow [Hz]
Par. 22-85
Speed at Design Point [RPM]
Par. 22-86
Speed at Design Point [Hz]
Par. 22-87
Pressure at No-Flow Speed
Par. 22-88
Pressure at Rated Speed
Par. 22-89
Flow at Design Point
Par. 22-90
Flow at Rated Speed
See also
VLT HVAC Drive Programming Guide
for a detailed description of the Function Set-ups parameter groups.
1-00 Configuration Mode
Option:
Function:
[0] *
Open-loop
Motor speed is determined by applying a speed reference or by setting desired speed when in Hand
Mode.
Open-loop is also used if the adjustable frequency drive is part of a closed-loop control system based
on an external PID controller providing a speed reference signal as output.
[3]
Closed-loop
Motor speed will be determined by a reference from the built-in PID controller varying the motor
speed as part of a closed-loop control process (e.g., constant pressure or flow). The PID controller
must be configured in par. 20-** or via the function set-ups accessed by pressing the [Quick Menu]
button.
NOTE!
This parameter cannot be changed when the motor is running.
6 How to Program the Low Harmonic Drive
VLT HVAC Low Harmonic Drive Instruction
Manual
6-14
MG.16.A1.22 - VLT
®
is a registered Danfoss trademark
6