Danfoss VLT HVAC Basic Drive FC 101 Operating Manual page 54

Operating Guide | VLT® HVAC Basic Drive FC 101
Parameter Range
Parameter 4-19 0.0–400.0 Hz
Max Output
Frequency
Parameter 6-20 0.00–10.00 V
Terminal 54
Low Voltage
Parameter 6-21 0.00–10.00 V
Terminal 54
High Voltage
Parameter 6-22 0.00–20.00 mA
Terminal 54
Low Current
Parameter 6-23 0.00–20.00 mA
Terminal 54
High Current
Parameter 6-24 -4999–4999
Terminal 54
Low Ref./Feedb.
Value
Parameter 6-25 -4999–4999
Terminal 54
High Ref./
Feedb. Value
Parameter 6-26 0.00–10.00 s
Terminal 54 Fil-
ter Time Con-
stant
Parameter 6-29 [0] Current
Terminal 54
mode [1] Voltage
Parameter [0] Normal
20-81 PI Nor-
mal/Inverse [1] Inverse
Control
Parameter 0–200 Hz
20-83 PI Start
Speed [Hz]
Parameter 0.00–10.00
20-93 PI Propor-
tional Gain
Parameter 0.1–999.0 s
20-94 PI Inte-
gral Time
54 | Danfoss A/S © 2019.11
Default Usage
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.
0.07 V Enter the voltage that corresponds to the low reference value.
10.00 V Enter the voltage that corresponds to the high reference val-
ue.
4.00 mA Enter the current that corresponds to the low reference value.
20.00 mA Enter the current that corresponds to the high reference val-
ue.
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.
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.
0.01 Enter the filter time constant.
[1] Voltage Select if terminal 54 is used for current or voltage input.
[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.
0 Hz Enter the motor speed to be attained as a start signal for com-
mencement of PI control.
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.
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
AQ275641848264en-000101 / 132R0078