Manual

Parameter Range Default Usage
Parameter 4-19
Max Output
Frequency
0.0–400.0 Hz 100 Hz Enter the maximum output frequency value. If parameter 4-19
Max Output Frequency is set lower than parameter 4-14 Motor
Speed High Limit [Hz], parameter 4-14 Motor Speed High Limit
[Hz] is set equal to parameter 4-19 Max Output Frequency auto-
matically.
Parameter 6-20
Terminal 54
Low Voltage
0.00–10.00 V 0.07 V Enter the voltage that corresponds to the low reference value.
Parameter 6-21
Terminal 54
High Voltage
0.00–10.00 V 10.00 V Enter the voltage that corresponds to the high reference val-
ue.
Parameter 6-22
Terminal 54
Low Current
0.00–20.00 mA 4.00 mA Enter the current that corresponds to the low reference value.
Parameter 6-23
Terminal 54
High Current
0.00–20.00 mA 20.00 mA Enter the current that corresponds to the high reference val-
ue.
Parameter 6-24
Terminal 54
Low Ref./Feedb.
Value
-4999–4999 0 Enter the feedback value that corresponds to the voltage or
current set in parameter 6-20 Terminal 54 Low Voltage/parame-
ter 6-22 Terminal 54 Low Current.
Parameter 6-25
Terminal 54
High Ref./
Feedb. Value
-4999–4999 50 Enter the feedback value that corresponds to the voltage or
current set in parameter 6-21 Terminal 54 High Voltage/param-
eter 6-23 Terminal 54 High Current.
Parameter 6-26
Terminal 54 Fil-
ter Time Con-
stant
0.00–10.00 s 0.01 Enter the filter time constant.
Parameter 6-29
Terminal 54
mode
[0] Current
[1] Voltage
[1] Voltage Select if terminal 54 is used for current or voltage input.
Parameter
20-81 PI Nor-
mal/Inverse
Control
[0] Normal
[1] Inverse
[0] Normal Select [0] Normal to set the process control to increase the
output speed when the process error is positive. Select [1] In-
verse to reduce the output speed.
Parameter
20-83 PI Start
Speed [Hz]
0–200 Hz 0 Hz Enter the motor speed to be attained as a start signal for com-
mencement of PI control.
Parameter
20-93 PI Propor-
tional Gain
0.00–10.00 0.01 Enter the process controller proportional gain. Quick control
is obtained at high amplification. However, if amplification is
too high, the process may become unstable.
Parameter
20-94 PI Inte-
gral Time
0.1–999.0 s 999.0 s Enter the process controller integral time. Obtain quick con-
trol through a short integral time, though if the integral time
is too short, the process becomes unstable. An excessively
long integral time disables the integral action.
Programming
Operating Guide | VLT® HVAC Basic Drive FC 101
AQ275641848264en-000101 / 132R0078
54 | Danfoss A/S © 2019.11