INVT Goodrive270 Series Operation Manual page 151

Goodrive270 series VFD for fan and pump
1. Enable the multi-pump control function (P94.00=1).
2. Set the variable-frequency motor run mode to fixed (P94.10=0).
3. Set the motor quantity to 4 (P94.11=4).
4. Set RO5–RO8 to control motors A, B, C, and D respectively (set P26.06–P26.09 to 57–60
respectively).
5. Set the contactor closing delay, which is the interval of switchover between the variable-frequency
run mode and power-frequency run mode.
The following figures and tables show the control logic.
PE
N
L1
L2
L3
R S
GD270
U V
KM1
M1
KM1–KM4: Contactors
Figure 5-34 Main circuit wiring in fixed variable-frequency run mode
N
Figure 5-35 Control circuit wiring in fixed variable-frequency run mode
QF1
QF2
T
W
KM2
M2
M1–M4: Asynchronous motors
L1/L2/L3
RO5
KM1
FR1
QF3
KM3
M3
QF1–QF4: Low-voltage breakers
RO6 RO7
KM2 KM3
FR2 FR3
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Basic operation guidelines
QF4
KM4
M4
RO8
KM4
FR4