Fan Control - S+S Regeltechnik Rymaskon 600 Operating Instructions Manual

Operating instructions
RYMASKON ® 600 - BACnet
RYMASKON ® 600 - Modbus
FAN
CONTROL
Fan Speed Control
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In "Auto Control", fan and/or blower control has been designed as a consumption control for output capacities
from 0 to 100 %. You can adjust the fan speed to work depending on different system parameters. The following
configuration options are possible for "Auto Control" (configurable in the "Fan Speed Source" parameter):
• Heating stage 1 + cooling stage 1 (Htg/Clg Stage 1)
• Heating stage 1 (Htg Stage 1)
• Cooling stage 1 (Clg Stage 1)
• Heating stage 2 + cooling stage 2 (Htg/Clg Stage 2)
• Heating stage 2 (Htg Stage 2)
• Cooling stage 2 (Clg Stage 2)
• CO2 control circuit (CO2)
• Humidification control circuit (Humidification)
• De-humidification control circuit (De-Humidification)
• Max. VAV, the higher consumption for cooling stage 1 and CO2 control
• Max. Temp/Hum, the higher consumption for heating stage 1, cooling stage 1 and (de-)humidification
• Aux control circuit (Aux. Loop)
The default is that the fan speed control follows the heating and cooling stages 1. This means that, e.g., if
heating stage 1 works with an output capacity of 55 % and the "Min. fan speed" (Min. Fan Level) is set to 0 %,
the fan speed is also regulated with an output capacity of 55 %. If the heating or cooling stages 1 reach the
dead zone, the blower is switched off at the same time (0 %).
Use the parameters "Min. fan speed" (Min. Fan Level) and "Fan switch-off delay" (Fan Off Delay) to set a
switch-off delay can for the dead zone in comfort mode (standard mode) where the fan continues to run
for the set time at the set minimum fan speed. "0" (disabled) is set as default for both parameters.
See the following examples for an explanation of how "Minimum fan speed" (Min. Fan Level) and
"Fan switch-off delay" (Fan Off Delay) work:
1. Example | Min Fan Level = 20 % | Fan Off Delay = 0 s
This configuration lets the fan run at 20% while the control circuit is in the dead zone.
2. Example | Min Fan Level = 20 % | Fan Off Delay = 10 s
This configuration lets the fan run at 20 % for 10 s as soon as the control circuit enters the dead zone.
When the 10 s have expired, the fan is regulated down to 0 %.
NOTE: Switch-off delay is only active if the minimum fan speed is configured to be greater than 0 %.
EC FAN AUTO CONTROL EXAMPLE
40%
20%
0%
-
calcSP = Calculated Setpoint
If the minimum fan speed is set to > 0 %, fan consumption scales between minimum and maximum fan speed
(100 %). To limit the maximum fan speed, scale the analogue output (Y1, Y2, Y3). By default, fan speed is assigned
to analogue output Y1.
In ECO mode, blower control works according to the same principle as in comfort mode.
In OFF mode, the fan is switched off except if frost was detected. In that case, blower capacity is switched to 33 %.
Manual priority switching
Use the fan speed parameter to configure manual priority switching with up to 6 blower speeds: ON / OFF,
2 speeds, 3 speeds or 6 speeds (see fan icons).
If released, users can tap the fan icon on the display to disable automatic control and to manually set the
requested blower speeds. Tap repeatedly to navigate through the available options. If manual priority switching
has been enabled, the colour line bar above the blower speed shows an "M".
In ECO mode, priority switching remains active.
In OFF mode, it is inactive.
NOTE: Manual priority switching sets the blower to the selected speed control, as described above.
The parameter Min. Fan Level is ignored in manual mode.
Fan Speed Source = HEATING / COOLING STAGE 1 LEVEL
Fan Speed Min Level = 40%
Fan Speed Min Level = 20%
calcSP
Comfort Deadzone
21
+
MEASURED
TEMPERATURE