Danfoss VLT AHF 005 Operating Instructions

Q3-40 Fan Functions Q3-41 Pump Functions Q3-42 Compressor Functions
Parameter 22-60 Broken Belt Function 22-20 Low Power Auto Set-up Parameter 1-03 Torque Characteristics
Parameter 22-61 Broken Belt Torque Parameter 22-21 Low Power Detection Parameter 1-71 Start Delay
Parameter 22-62 Broken Belt Delay Parameter 22-22 Low Speed Detection Parameter 22-75 Short Cycle Protection
Parameter 4-64 Semi-Auto Bypass Set-up Parameter 22-23 No-Flow Function Parameter 22-76 Interval between Starts
Parameter 1-03 Torque Characteristics Parameter 22-24 No-Flow Delay Parameter 22-77 Minimum Run Time
Parameter 22-22 Low Speed Detection Parameter 22-40 Minimum Run Time Parameter 5-01 Terminal 27 Mode
Parameter 22-23 No-Flow Function Parameter 22-41 Minimum Sleep Time Parameter 5-02 Terminal 29 Mode
Parameter 22-24 No-Flow Delay Parameter 22-42 Wake-up Speed [RPM] 5-12 Terminal 27 Digital Input
Parameter 22-40 Minimum Run Time Parameter 22-43 Wake-up Speed [Hz] 5-13 Terminal 29 Digital Input
Parameter 22-41 Minimum Sleep Time Parameter 22-44 Wake-up Ref./FB Difference Parameter 5-40 Function Relay
Parameter 22-42 Wake-up Speed [RPM] 22-45 Setpoint Boost Parameter 1-73 Flying Start
Parameter 22-43 Wake-up Speed [Hz] 22-46 Maximum Boost Time 1-86 Trip Speed Low [RPM]
Parameter 22-44 Wake-up Ref./FB
Difference
Parameter 22-26 Dry Pump Function 1-87 Trip Speed Low [Hz]
22-45 Setpoint Boost 22-27 Dry Pump Delay
22-46 Maximum Boost Time 22-80 Flow Compensation
Parameter 2-10 Brake Function 22-81 Square-linear Curve Approximation
2-16 AC brake Max. Current 22-82 Work Point Calculation
Parameter 2-17 Over-voltage Control 22-83 Speed at No-Flow [RPM]
Parameter 1-73 Flying Start 22-84 Speed at No-Flow [Hz]
Parameter 1-71 Start Delay 22-85 Speed at Design Point [RPM]
Parameter 1-80 Function at Stop 22-86 Speed at Design Point [Hz]
Parameter 2-00 DC Hold/Preheat Current 22-87 Pressure at No-Flow Speed
Parameter 4-10 Motor Speed Direction 22-88 Pressure at Rated Speed
22-89 Flow at Design Point
22-90 Flow at Rated Speed
Parameter 1-03 Torque Characteristics
Parameter 1-73 Flying Start
Table 6.6 Q3-4 Application Settings
1-00 Configuration Mode
Option: Function:
NOTICE
This parameter cannot be adjusted while
the motor is running.
[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 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 of a closed loop control process (e.g.
constant pressure or flow). The PID controller must
be configured in parameter group 20-** Feedback
or via the Function Set-ups accessed by pressing
[Quick Menus].
NOTICE
When set for Closed Loop, the commands Reversing and
Start Reversing do not reverse the direction of the
motor.
1-03 Torque Characteristics
Option: Function:
[0] Compressor
torque
For speed control of screw and scroll
compressors. Provides a voltage which is
optimized for a constant torque load charac-
teristic of the motor in the entire range down
to 10 Hz.
[1] Variable
torque
For speed control of centrifugal pumps and
fans. Also to be used when controlling more
than one motor from the same frequency
converter (e.g. multiple condenser fans or
cooling tower fans). Provides a voltage which
is optimised for a squared torque load
characteristic of the motor.
[2] Auto Energy
Optim. CT
For optimum energy efficient speed control
of screw and scroll compressors. Provides a
How to Programme VLT HVAC Drive FC 102 Operating Instructions
MG11F402 - Rev. 2013-12-16 91
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Danfoss VLT AHF 005 Specifications

General

Brand	Danfoss
Model	VLT AHF 005
Category	DC Drives
Language	English