HVAC400X – APPLICATION MANUAL
153
EN2B-0417GE51 R0719
SELECTION 1, ENABLED
To include the regulating motor in the autochange or in the interlock logic, follow the instructions in the figure below.
One relay controls each motor. The contactor logic always connects the first motor to the drive, and the next motors
to the mains.
Fig. 49. Selection 1
Legend
A.
Mains.
C.
Motor 2 control from relay.
B.
Motor 1 control from relay.
D.
Motor 3 control from relay.
P3.15.4 AUTOCHANGE (ID 1027)
You can use this parameter to enable or disable the rotation of the start sequence and the priority of motors.
P3.15.4 AUTOCHANGE (ID 1027)
Selection number Selection name
Description
0
Disabled
In normal operation, the sequence of the motors is always 1, 2, 3, 4, 5.
The sequence can change during the operation if you add or remove
interlocks. After the drive stops, the sequence always changes back.
1
Enabled
The system changes the sequence at intervals to wear the motors
equally. You can adjust the intervals of the autochange.
A
M1
M2
M3
K1
K1
K2
K2
K1
K2
K2
K1
K2
K3
K3
K3
K3
K3
K3
K1
K2
K1
K1
K2
K3
K1.1
K1.1
K2.1
K3.1
K2.1
K3.1
B
C
D
K1.1
K2.1
K3.1