Danfoss VLT FC 100, Operating Instructions Manual, Page: 104 / 193

Q3-4 Application Settings
Q3-40 Fan Functions Q3-41 Pump Functions Q3-42 Compressor Functions
Par. 22-60
Broken Belt Function
Par. 22-20
Low Power Auto Set-up
Par. 1-03
Torque Characteristics
Par. 22-61 Broken Belt Torque Par. 22-21 Low Power Detection Par. 1-71 Start Delay
Par. 22-62
Broken Belt Delay
Par. 22-22
Low Speed Detection
Par. 22-75
Short Cycle Protection
Par. 4-64 Semi-Auto Bypass Set-up Par. 22-23 No-Flow Function Par. 22-76 Interval between Starts
Par. 1-03
Torque Characteristics
Par. 22-24
No-Flow Delay
Par. 22-77
Minimum Run Time
Par. 22-22 Low Speed Detection Par. 22-40 Minimum Run Time Par. 5-01 Terminal 27 Mode
Par. 22-23
No-Flow Function
Par. 22-41
Minimum Sleep Time
Par. 5-02
Terminal 29 Mode
Par. 22-24 No-Flow Delay Par. 22-42 Wake-up Speed [RPM] Par. 5-12 Terminal 27 Digital Input
Par. 22-40
Minimum Run Time
Par. 22-43
Wake-up Speed [Hz]
Par. 5-13
Terminal 29 Digital Input
Par. 22-41
Minimum Sleep Time
Par. 22-44
Wake-up Ref./FB Difference
Par. 5-40
Function Relay
Par. 22-42 Wake-up Speed [RPM] Par. 22-45 Setpoint Boost Par. 1-73 Flying Start
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. 22-26 Dry Pump Function 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. 2-10
Brake Function
Par. 22-81
Square-linear Curve Approximation
Par. 2-16 AC brake Max. Current Par. 22-82 Work Point Calculation
Par. 2-17
Over-voltage Control
Par. 22-83
Speed at No-Flow [RPM]
Par. 1-73 Flying Start Par. 22-84 Speed at No-Flow [Hz]
Par. 1-71
Start Delay
Par. 22-85
Speed at Design Point [RPM]
Par. 1-80
Function at Stop
Par. 22-86
Speed at Design Point [Hz]
Par. 2-00 DC Hold/Preheat Current Par. 22-87 Pressure at No-Flow Speed
Par. 4-10
Motor Speed Direction
Par. 22-88
Pressure at Rated Speed
Par. 22-89 Flow at Design Point
Par. 22-90
Flow at Rated Speed
Par. 1-03 Torque Characteristics
Par. 1-73
Flying Start
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 frequency converter 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 parameter group 20-** or via the Function Setups accessed by pressing
the [Quick Menus] button.
This parameter cannot be changed while the motor is
running. When set for Closed Loop, the commands Reversing
and Start Reversing will not reverse the direction of
the motor.
1-03 Torque Characteristics
Option: Function:
[0] * Compressor torque Compressor [0]: For speed control of screw and scroll compressors. Provides a voltage which is
optimized for a constant torque load characteristic of the motor in the entire range down to 10
Hz.
[1] Variable torque
Variable Torque
[1]: For speed control of centrifugal pumps and fans. Also to be used when con-
trolling more than one motor from the same frequency converter (e.g. multiple condenser fans or
VLT HVAC Drive High Power Operating In-
structions 6 How to Programme
MG.11.F3.02 - VLT ® is a registered Danfoss trademark
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