Koer C35-VAV..., Техническое руководство

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C35-VAV 25 C35-VAV
12.4.2. Parameters
[2..5 / 5] PID settings
and ECM
The Proportional-Integral-
Derivative controller (PID
controller) calculates a
difference between measured
values and set points. The
PID controller minimizes the
difference between those
values by adjusting openness
of the valves, damper
actuator or fan speed. Adjust
PID gains according to each
project’s specifications. The
default values may not be
suitable for all applications.
Tuning a PID controller
involves setting values of
Proportional gain (Kp),
Integral gain (Ki) or Derivative
gain (Kd) parameter values.
If two-term (PI) or one-term
(P) control is needed adjust
unnecessary values to zero.
The C35-VAV… uses 6 PID
controls. The PID controller
parameters can be adjusted
for the following functions:
•
VAV temperature [2/5]
• VAV Air quality [3/5]
• Valve [3/5]
• Dehumidification [4/5]
• Fan Temperature [4/5]
• Fan Air Quality [5/5]
Adjustments can be made
using the +/- buttons. Once
the required adjustments
have been made, select
on each screen to save your
changes.
The analog output signal for the EC motor can be configured with three parameters:
• “ECM Min Off voltage” : If this value is different from zero volts, adjust the ECM OFF voltage
to value that will turn off the ECM fan.
• “ECM MIN voltage” : Defines the minimum signal value and the minimum speed of the fan
(5 %).
• “ECM MAX voltage” : Defines the maximum signal value and the maximum speed of the
fan (100 %).
Adjustments can be made using the +/- buttons. Once the required adjustments have been
made, select to save your changes.
The C35-VAV… can be
calibrated by adjusting the
offset values on the device.
Adjust offset values for
each sensor using the +/-
buttons.
Select to save
your changes. Once the
button has been pressed, the
temperature will be updated
to reflect the input of the
offset value.
12.5. Offsets
NOTE : Ensure all sensors have had sufficient time to power up and stabilize prior to entering
offset values. For more information see, “First Power Up an Commissioning”
Setpoint limits are defined in
the “SP limits” menu. Limits
can be set for temperature,
air quality, and relative
humidity in heating and
cooling control modes and
for all operating modes. Once
setpoint limits have been
defined, users will not be able
to adjust setpoints outside
the defined limits.
Adjust the limits for each
setpoint on screens 1 to 4
using the +/- buttons.
Select to save your
changes.
Select the “Language” button
on Advanced menu screen.
Select the desired language
from the available options
and then press the “Save”
button to save the changes.
12.6. Setpoint Limits
12.7. Language