59
In case of unsatisfactory results of temperature control
process, you have to:
• check if the system operates at its full performance (com-
paring the fan inverter frequency with the operation fre-
quency stated in the AHU specication sheet or with data
obtained from the performance measurement results,
• check operation of the actuators and control circuits of the
heaters, coolers and recovery systems,
• check operation of the air dampers,
• check if the temperature sensors are installed correctly,
• check selection of the Pl controllers settings.
Type controller – new cascading controller in which
system startup is carried out only with the air supply
temperature controller with duration determined in
„Settings/Temperature/Preset temperature ramp” menu,
and once this time passes (if the master sensor is dier
-
ent than the air supply sensor) an additional controller
of lead temperature is provided in order to apply the
present temperature setting of the air supply controller.
Table no. 2 Controller – total of temperature controllers: main, min limit, max limit
Name in menu Factory setting (recommended)
Heating Pl
Kp = 1
Ti = 60s
Cooling Pl
Kp = 1
Ti = 60s
Air supply Pl (air supply Tmin limit, air
supply Tmax limit)
Kp = 1
T1 = 90s
Air supply Pl of the controller can be faster or slower
than heating and cooling Pl. The slower the Pl is, the
smaller the oscillations at min and max air supply tem
-
perature but the reaction to the limit is slower.
The temperature limit parameters “Air supply Tmin”,
“Air supply Tmax” can be similar to the preset temper-
ature setting.
If there is no setting stabilization for recommended set
-
tings you can increase Ti of each controller by 10s (max
up to 120s).
Selection of heater cool down time should eliminate
overheating of the electrical heater.
4. CONTROL CABINET CODING
Table no. 3 Control cabinet sizes
Index Name
Internal version – plastic
IP40-rated [HxWxD]
99000521027363 CG_EVO-T-2S – Compact 303x407x98 mm
99000521027364 CG_EVO-T-4S – Compact 303x407x98 mm
99000521027329
CG_EVO-T-2S – HMI
Touch 4,3”
303x407x98 mm
99000521027330
CG_EVO-T-4S – HMI
Touch 4,3”
303x407x98 mm
99000521027365 CG_EVO-T-2S – HMI Touch 7” 303x407x98 mm
99000521027366 CG_EVO-T-4S – HMI Touch 7” 303x407x98 mm
Table no. 4 Control cabinet coding
Code System name
SECS Air supply/exhaust
PRCS
Air supply/exhaust with cross-ow heat exchanger
equipped with bypass system
SCS Air supply unit
Table no. 5 Indication of functions in the table of codes and no. of control cabinet application
Symbol Description
EH Electrical heater
WH Water heating coil
DX DX cooler
WC Water cooling coil
MX Mixing chamber
Table no. 6 Control system application coding
Name/function
WH EH WC DX MX
Code No.
SCS 1 0 1 0 0 0
SCS 2 2 0 0 0 0
SCS 4 0 0 0 4 0
SCS 5 0 1 0 4 0
SCS 6 2 0 0 4 0
SCS 8 0 0 8 0 0
SCS 9 0 1 8 0 0
SCS 10 2 0 8 0 0
SCS 33 0 1 0 0 32
SCS 34 2 0 0 0 32
SCS 36 0 0 0 4 32
SCS 37 0 1 0 4 32
SCS 38 2 0 0 4 32
SCS 40 0 0 8 0 32
SCS 41 0 1 8 0 32
No system stabilization in case of such set-
tings selection can indicate wrong selection
of heat/cool exchangers, their incorrect oper-
ation, missing required parameters of heat/
cool nodes, set according to the AHU selection
sheet.
If the application is changed remember to re-
vert the system to the factory settings in „Ser-
vice menu/Revert to factory settings” menu.
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