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230VAC
L
N
N
L
Room
unit
OFF / ON
OF
F
/ ON
X3
X2
X1
ON SWITCH
OFF
ON
OFF ON
OFF ON
OFF
ON
T
D- D+ V
T
D- D+ V
T
T
B A
D- D+ V
Device address: ID 1-4
1=
2=
3=
4=
CONTROL
Termi-
nation
Switch 1-8:
DEVICE
ADDRESS
Bus termina-
tion by jumper
230VAC
L
N
N
L
X3
X2
X1
ON SWITCH
DEVICE
ADDRESS:
(DIP-switch)
ID: 1-253
Fixed speed:
38k4 8n1
A
B
G0
OFF ON
OFF ON
T
D- D+ V
Building
automation
CONTROL
Termi-
nation
Switch 1-8:
DEVICE
ADDRESS
Bus termination
by jumper
230VAC
L
N
N
L
X3
X2
X1
Room
unit
Building
automation
BUS Modbus settings
(Can be set with the
room controller):
ID: 1-247
Speed: 9k6, 19k2, 38k4
Data bits: 8
Parity, None, Even, Odd
Stop bits: 1 or 2
Modbus control
settings
(DIP-switch)
ID: 1-4
Fixed speed:
38k4 8n1
A
B
G0
OF
F
/ ON
OFF / ON
T
T
B A
D- D+ V
OFF ON
T
D- D+ V
CONTROL
Termi-
nation
Switch 1-8:
DEVICE
ADDRESS
ON SWITCH
Room
unit
ECO vent
Room
unit
ECO vent
Room
unit
ECO vent
T
T
B A
D- D+ V
T
T
B A
D- D+ V
T
T
B A
D- D+ V
T
D- D+ V
T
D- D+ V
T
D- D+ V
Pääte
vastus
Pääte
vastus
Pääte
vastus
Figure 2.1
Figure 2.2
Figure 2.3
Figure 2.4
Chaining room controllers through the Modbus connection
Room unit and vent
Building automation and vent
Room unit, vent and building automation
Connection
1.
NOTE! Lead the 230 V supply
voltage to the device through
a double-pole switch. Connect
the supply voltage to connec-
tors N and L in the electronics section
of the terminal device, as shown in Fig-
ures 2.1–2.3.
2.
Connect the ground to the terminal
device’s separate ground connector as
shown in Figures 2.1–2.3.
3.
Connect the ECO series terminal device
to the controller with the Modbus cable
as shown in Figures 2.1–2.3.
4.
Connect the bus cables as shown in the
figures.
5.
Activate the terminator by moving the
termination jumper to the ON position
in the first and last device of the bus.
NOTE! Electrical connections may only
be made by a professional electrician.
WARNING! The supply air device carries
a voltage of 230 V.
U = 230V In = 1,7 A
