Danfoss VLT HVAC Basic Drive FC 101 Quick Manual page 32

Quick Guide
No & Name
1-39 Motor Poles
1-40 Back EMF at 1000 RPM
1-73 Flying Start
3-02 Minimum Reference
3-03 Maximum Reference
3-10 Preset Reference
3-41 Ramp 1 Ramp Up Time
3-42 Ramp 1 Ramp Down Time
4-12 Motor Speed Low Limit [Hz]
4-14 Motor Speed High Limit [Hz]
4-19 Max Output Frequency
6-29 Terminal 54 mode
6-20 Terminal 54 Low Voltage
6-21 Terminal 54 High Voltage
6-22 Terminal 54 Low Current
6-23 Terminal 54 High Current
6-24 Terminal 54 Low Ref./Feedb.
Value
6-25 Terminal 54 High Ref./Feedb.
Value
6-26 Terminal 54 Filter Time
Constant
20-81 PI Normal/ Inverse Control
20-83 PI Start Speed [Hz]
20-93 PI Proportional Gain
®
VLT HVAC Basic Drive Quick Guide
Range
2–100
10–9,000
[0] Disabled
[1] Enabled
-4,999–4,999
-4,999–4,999
-100–100%
0.05–3,600.0 s
0.05–3,600.0 s
0.0–400 Hz
0–400 Hz
0–400
[0] Current
[1] Voltage
0–10 V
0–10 V
0–20 mA
0–20 mA
-4,999–4,999
-4,999–4,999
0–10 s
[0] Normal
[1] Inverse
0–200 Hz
0–10
®
MG18A422 - VLT is a registered Danfoss trademark
Default Function
4 Enter the number of motor poles
Size related Line-Line RMS back EMF voltage at 1000 RPM
0 Select [1] Enable to enable the adjustable
frequency drive to catch a spinning motor,
e.g., in fan applications. When PM is selected,
Flying Start is enabled.
0 The minimum reference is the lowest value
obtainable by summing all references.
50 The maximum reference is the highest value
obtainable by summing all references.
0 Enter the setpoint.
Size related Ramp-up time from 0 to rated 1-23 Motor
Frequency if Asynchron motor is selected;
ramp-up time from 0 to 1-25 Motor Nominal
Speed if PM motor is selected.
Size related Ramp-down time from rated 1-23 Motor
Frequency to 0 if Asynchron motor is selected;
ramp-down time from 1-25 Motor Nominal
Speed to 0 if PM motor is selected.
0.0 Hz Enter the minimum limit for low speed
65 Hz Enter the minimum limit for high speed
Size related Enter the maximum output frequency value
1 Select if terminal 54 is used for current or
voltage input
0.07 V Enter the voltage that corresponds to the low
reference value.
10 V Enter the voltage that corresponds to the low
high reference value.
4 Enter the current that corresponds to the high
reference value.
20 Enter the current that corresponds to the high
reference value.
0 Enter the feedback value that corresponds to
the voltage or current set in 6-20 Terminal 54
Low Voltage/6-22 Terminal 54 Low Current
50 Enter the feedback value that corresponds to
the voltage or current set in 6-21 Terminal 54
High Voltage/6-23 Terminal 54 High Current
0.01 Enter the filter time constant.
0 Select [0] Normal to set the process control to
increase the output speed when the process
error is positive. Select [1] Inverse to reduce
the output speed.
0 Enter the motor speed to be attained as a
start signal for commencement of PI control.
0.01 Enter the process controller proportional gain.
Quick control is obtained at high amplifi-
cation. However, if amplification is too great,
the process may become unstable
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