Table of Contents
Advertisement
Auxiliary Heating Control
Loop
CO2 Sensor Control Loop
Operation (TRC-x-CO2
Models)
Web-site: www.produal.com
Enquiries: T: +358 10 219 9100 E: info@produal.fi
The Fan Off Delay defines time how long the fan overruns in the deadzone (after no demand). E.g. by
setting the Fan Off Delay to 30 seconds, the fan switches off after the Htg/Clg Stage 1 demand has
remained within the deadzone for 30 seconds (example above).
If maximum speed is required to be set for the fan, this is confugured by setting the maximum level in
the analogue output (Y1, Y2, Y3) scaling. As default fan speed is configured for Y1.
In ECO mode the Fan Speed control follows the same principle as in the COMFORT mode. In OFF
mode the fan is Off unless frost has been detected in which case the fan output is set to 33%.
Automatic Fan Speed Display
Fan speed can be displayed on the
screen using coloured bar indicating
the speed and rotating fan icon. The
display is enabled through the Fan
Speed Display parameter.
Options are:-
•
NONE; no display (Default)
•
NO INPUT; no user adjustment
•
0-1; Off/On
•
0-1-2; 2-Speed
•
0-1-2-3; 3-Speed
•
0-1-2-3-4-5-6; 6-Speed
When in Automatic control 'A' is
displayed above the coloured bar. The
number of bars displayed depends on
the fan speed - switching levels described above.
Manual Fan Speed Override
The Fan Speed Display parameter
is used to configure Manual Fan
Speed Override options; On/Off,
2-Speed, 3-Speed or 6-Speed.
Once activated the user can
override the Fan Speed by
touching the Fan Icon on the
screen. The desired speed can be
set by touching multiple times on
the screen. When Manual override
is active 'M' is displayed above the
coloured speed bar.
In ECO mode Manual Override is
active. In OFF mode manual
override is disabled.
NOTE: Manual Fan Override sets
the Fan Speed to defined values as described above and the Min. Fan Level parameter is
ignored.
The TRC-P series controllers have an auxiliary heating temperature control loop. The auxiliary control
loop provides additional PI-control function for applications where second control loop is required e.g.
second zone temperature control for bathrooms. The auxiliary control loop is activated by selecting
Aux control for RI1 or RI2 input.
Note: RI2 is not available with TRC-P-2A3R.
The CO2 models can measure and control
the CO2 level. This can then be used in
demand based control applications. The
CO2 control output can then be configured
to linked to any of the physical control
outputs Y1, Y2 or Y3, or used in maximum
demand control (MAX VAV, MAX FAN
options)
The CO2 control loop output corresponds
to the CO2 setpoint and the CO2
proportional band. If configured as Direct
Control (typical), then if the CO2 level
increases above the setpoint the loop output starts to modulate to 100%. When the CO2 level is the
amount of the Proportional Band above the setpoint, the loop output is 100%. The configuration is
done via the configuration parameters. The CO2 control loop can also be configured to operate as
FAN SPEED INDICATION IN
AUTOMATIC CONTROL
A
0% to 8%
A
8% to 25%
A
25% to 41%
A
41% to 58%
A
58% to 74%
A
74% to 92%
A
92% to 100%
FAN SPEED INDICATION AND
CONTROL, AUTO IS DISPLAYED
WHEN UNDER AUTOMATIC
CONTROL. WHEN RUNNING
FAN ROTATES.
ON/OFF MANUAL
3-SPEED MANUAL
FAN OVERRIDE
FAN OVERRIDE
M
0%
0%
M
M
100%
33%
M
A
67%
Auto
SPEED SET BY
M
100%
CONTROLLER
A
2-SPEED MANUAL
Auto
FAN OVERRIDE
SPEED SET BY
CONTROLLER
0%
AFTER FULL SPEED AUTO
M
OPTION IS AVAILABLE TO
50%
RETURN BACK TO AUTO-
M
MATIC CONTROL
100%
A
Auto
SPEED SET BY
CONTROLLER
LOOP OUTPUT
100%
SP= Setpoint e.g. 800ppm
PB = Proportional Band
0%
-
0 ppm
SP
Copyright © 2020 Produal Oy - All rights reserved - 07/2020
Produal Oy
Target
21
°C
.5
A
Room
20
°C
.1
6-SPEED MANUAL FAN
CONTROL
M
0%
M
17%
M
33%
M
50%
M
67%
M
83%
M
100%
A
Auto
SPEED SET BY
CONTROLLER
2000 ppm
+
PB
CO2 Level
e.g 400ppm
PS 6001TRC-P - 12/34
Advertisement
Table of Contents
