Goodrive270 series VFD for fan and pump Basic operation guidelines
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Note:
 After the multi-pump control function is enabled, the VFD setting frequency can be given only
by the water supply dedicated PID—PID1.
 It is not recommended to use the multi-pump control function on the 30kW or higher VFDs.
 Connected water pump motors must have the same rated power.
PE
N
L1
L2
L3
SR T
U V W
GD270
M1 M2 M3 M4
QF2
QF3 QF4
QF5
KM2
KM4 KM6 KM8
KM1 KM3 KM5 KM7
FR1 FR2 FR3
FR4
KM1–KM8: Contactors FR1–FR4: Thermal protection overload relays
QF2–QF5: Low-voltage breakers M1–M4: Asynchronous motors
Figure 5-28 Main circuit wiring in variable-frequency control mode of one VFD driving four pumps
GD270
L1 L2 L3
24V PW S1
R S T
S2 S3 S4COM
SA1 SA2 SA3 SA4
KA1 KA2
KA3 KA4
WVU
RO5A RO5C RO6A RO6C RO7A RO7C RO8A RO8C
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