Vacon 100 hvac Applications Manual page 176

VACON · 176
When to disconnect and/or remove motors:
The feedback value is not in the bandwidth area.
•
The regulating motor operates at a close to minimum frequency (+2 Hz).
•
The conditions above are true for longer than the bandwidth delay.
•
There are more motors that operate than the regulating one.
•
P3.14.1 NUMBER OF MOTORS (ID 1001)
Use this parameter to set the total number of motors/pumps used with the Multi-Pump
system.
P3.14.2 INTERLOCK FUNCTION (ID 1032)
Use this parameter to enable or disable the interlocks.
The interlocks tell the Multipump system that a motor is not available. This can occur when
the motor is removed from the system for maintenance or bypassed for manual control.
To use the interlocks, enable the parameter P3.14.2. Make a selection of the status for each
motor with a digital input (the parameters from P3.5.1.25 to P3.5.1.28). If the value of the
input is CLOSED, that is, active, the motor is available for the Multipump system. If not, the
Multipump logic will not connect it.
Fig. 45: The interlock logic 1
The sequence of the motors is 1, 2, 3, 4, 5.
If you remove the interlock of Motor 3, that is, you set the value of P3.5.1.36 is set to OPEN,
the sequence changes to 1, 2, 4, 5.
10
M1 M2
Starting order of motors
M3 M4
TEL. +358 (0)201 2121 · FAX +358 (0)201 212 205
PARAMETER DESCRIPTIONS
M5