INVT Goodrive270 Series Operation Manual page 146

Goodrive270 series VFD for fan and pump
Function
code
Contactor closing
P94.36
Contactor opening
P94.37
5.5.16.1 Motor adding or reducing
Motor adding
Output
frequency
Run status
RO5
RO6
This figure assumes that the VFD outputs and controls motor M1 and the other motors are in the
stopped state. At this time, if the output frequency is equal to or higher than P94.20 (Running
frequency for motor adding), PID1 feedback is less than the difference between PID1 reference and
P94.19 (Pressure tolerance for motor adding), and this condition lasts a period of time longer than
P94.21 (Motor adding delay), the motor adding function is triggered. Motors are added, and then the
VFD coasts to stop and disconnects the contactor KM1 with the contactor opening delay (P94.37) and
Name
64: Control variable-frequency
circulation motor H
65: Low-temperature pre-alarm
66: Stalling pre-alarm
67: Dry-pumping pre-alarm
0.2–100.0s
delay
0.2–100.0s
delay
Motor
connected
to RO5
1 2
Figure 5-32 Motor adding timing
Description
Motor adding
【P94.20】
Motor
connected to
RO5/6
3 4 5 6
-136-
Basic operation guidelines
Value Modify
○
0.5s
○
0.5s
t