Functions; Operating Mode - Swegon ESENSA PX TOP Operation & Maintenance Instructions Manual

AO1 = outpout 0-10V for external hydraulic postheater
(option)
DO1 = KWout = output PWM for KWout power regulation
(option)
DO2 = KWin- PX: output PWM for KWin power regulation
(option)
| RX SPEED PWM - RX
AO2 = RX SPEED 0-10V - RX (option)
AO3 = 0-10 V output to control cooling capacity
AO4 = outpout 0-10V for internal hydraulic postheater
(option)
DO3 = BYPASS OPEN- PX (with rotary actuator) (prewired)
DO4 = BYPASS CLOSE - PX (with rotary actuator) (prewired)
DO5 = DAMPER 1 (with or without spring return, Imax = 0.5A
DC) (option)
DO6 = DAMPER 2 (with or without spring return, Imax = 0.5A
DC) (option)
DO7 = HEAT OUTPUT (open collector; Vmax=24 VDC;
Imax=0,1 A)
DO8 = COOL OUTPUT (open collector; Vmax=24 VDC;
Imax=0,1 A)
DO9 = ALARM OUTPUT (open collector; Vmax=24 VDC;
Imax=0,1 A)
DO10 = AL dPA OUTPUT (open collector; Vmax=24 VDC;
Imax=0,1 A)
DO11 = FAN ON OUTPUT (open collector; Vmax=24 VDC;
Imax=0,1 A)
ADI1 = BYPASS POS - PX | RX SPEED FEEDBACK - RX
(prewired)
ADI2 = SUPPLY FILTER dPa
ADI3 = EXTRACT FILTER dPa
F1 = FAN 1 (SUPPLY)
F3 = FAN 3 (EXHAUST)
SAT COM = SAT MODBUS or SAT KNX or SAT WIFI-ETHERNET-
(option)
GREEN LED ON = POWERED ON
RED LED ON = ALARM
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GB.ESENSA.MO.231025
T1 = from outdoors T° sensor (prewired)
T2 = from indoors T° sensor (prewired)
T3 = to outdoors T° sensor (prewired)
T5 = supply T° sensor for IBA/KWout coil (option)
T7 = IBA/EBA anti freeze protection T° sensor (option)
T8 = Cooling coil frost protection sensor
IN1 + 12/24V = FIRE ALARM
IN2 + 12/24V = BOOST
IN3 + 12/24V = BYPASS ACTIVATION OVERRIDE
IN4 + GND = Drain pan full contact (only for LP Unit -
prewired)
K1: Airflow MODE = m³/h K1
Demand/Pressure
= START/STOP
control
Torque MODE
= %torque K1
K2: Airflow control = m³/h K2
Demand/Pressure
= 0-10V INPUT
control
Torque control = %torque K2
K3: Airflow control
= m³/h K3
Demand/Pressure
= % ON K3 or 0-10 V INPUT
control
Torque control
= %torque K3
RJ1 = RJ12 connector for TACtouch (option)
RJ2 = RJ12 connector for Modbus Pressure CP mode (option)
RJ3 = RJ12 connector for Modbus Pressure CA mode on sup-
ply flow (option - prewired)
RJ4 = RJ12 connector for Modbus Pressure CA mode on ex-
haust flow and defrost detecting (option - prewired)
We reserve the right to alter specifications.

4. Functions

4.1 Operating mode

There are five main operating modes. The operating
mode determines how the airflow or the fan torque
is modulated. The default operating mode is Airflow
control.
1 - Airflow control:
Flow control involves operating the air handling unit to keep the pre-set airflow constant. The speed of the
fans is automatically regulated to provide correct airflow even if the filters begin to become clogged, air
terminals are blocked, etc. Airflow control mode is advantageous, since the airflow always is exactly as it was
from the beginning. It should however be noted that everything that increases the pressure drop in the
ventilation system, such as blocking of air terminals and dust accumulating in filters, causes the fans to run at
a higher speed. This results in higher power consumption and may also cause discomfort in the form of noise.
There are three airflow setpoints to be configured by the user (m³h K1, m³h K2, m³h K3).
2 - Torque control:
3 torque setpoints to be configured by the user (%TQ K1, %TQ K2, %TQ K3). The setpoint is configured
in % of the maximal torque.
3 - Demand control 0-10V:
The airflow is controlled by a 0-10 V signal. The control signal is connected to terminals K2&GND. The assigned
supply airflow is set as a percentage of a linear 0-10 V signal. The user defines the link with 4 parameters: Vmin,
Vmax, m³h Vmin and m³h Vmax, applied to the following diagram. The demand control mode is also
available for modulating fan torque instead of airflow.
The principle is identical to the demand control mode operation with the difference that Vmin and Vmax are
connected to a %TQ instead of m³/h.
4 - Pressure control:
The airflow automatically varies to provide constant pressure in the ducting system. This type of control is
also called VAV control (Variable Air Volume).
Pressure on supply: the airflow of the supply fan(s) is modulated to maintain a certain pressure Setting
constant. The pressure is measured by a pressure sensor located in the supply air duct.
Pressure on exhaust: the airflow of the exhaust fan(s) is modulated to maintain a certain pressure Setting
constant. The pressure is measured by a pressure sensor located in the extract air duct.
5 - Mode off :
This stops the AHU
We reserve the right to alter specifications.
GB.ESENSA.MO.231025
In all the operating modes, the supply fan(s) will operate
as per the assigned mode and parameters. The exhaust
fan(s) will operate according to the chosen percentage
of the supply fan (%EXH/SUP ratio). The five main
operating modes are:
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