Soft Fill - Honeywell HVAC400x Applications Manual

A
F
A. Setpoint.
B. Setpoint + max. compensation.
C. Setpoint.
D. Min. frequency and flow.
E. Max. frequency and flow.
F. Pressure.
10.13.7

Soft Fill

The Soft fill function is used to move the process to a set level at a slow speed before the PID controller starts to
control. If the process does not go to the set level during the timeout, a fault shows.
You can use the function to fill an empty pipe slowly and prevent strong currents of water that could break the pipe.
We recommend that you always use the Soft fill function when you use the Pump and Fan Cascade function.
P3.13.7.1 ENABLE SOFT FILL (ID 1094)
You can use this parameter to enable the Soft Fill function.
P3.13.7.2 SOFT FILL FREQUENCY (ID 1055)
You can use this parameter to set the frequency reference of the HVAC drive when the Soft Fill function is used.
P3.13.7.3 SOFT FILL LEVEL (ID 1095)
You can use this parameter to set the level below which the soft fill control is enabled when starting the drive.
The drive operates at the PID start frequency until the feedback reaches the set value. Then the PID controller
starts to control the drive.
This parameter is applied if the soft fill function is set to 'Enabled (Level)'.
P3.13.7.4 SOFT FILL TIMEOUT (ID 1096)
You can use this parameter to set the timeout time for the Soft Fill function. When the soft fill function is set to
Enabled (Level), this parameter gives the timeout for the soft fill level, after which the soft fill fault occurs. When the
D
PT
J
Fig. 43. Enable setpoint 1 for pressure loss compensation
HVAC400X – APPLICATION MANUAL
PT
K
Legend
G. No flow.
H. With flow and compensation.
I. Pipe length.
J. Position 1.
K. Position 2.
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C
E
G
H
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EN2B-0417GE51 R0719