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2VV.
Creating innovative solutions for you and your business since 1995.
ver.1 31-05-21
6.5-4 Connecting the unit to a BMS
control system
The control of the unit is fitted with a RS-485 and and
RJ45 interface as standard. Insert the cable into one of
the connectors on the unit’s electronic board. Connect
the other end to the main control unit. For protocol details
(Modbus-TCP, Modbus-RTU), contact 2VV.
READ CAREFULLY!
● There should be as much distance as possible be
-
tween the supply and control cables.
● Make sure that the cable snaps into the connector.
● Be careful not to damage the cable insulation when fit
-
ting the control to a wall or other surface.
● If the connectors and cables aren’t connected immedi
-
ately after installing the unit, protect them with insulat-
ing tape against mechanical damage or short-circuit.
● The cable connectors must not come into contact with
water or any other liquid.
6. INSTALLATION
MODBUS RTU
(A-25, B-26, 28 or 66-GND)
6.5-2.5 Movement sensor
6.5-3 Control unit
To start the unit, connect the remote control to the unit
with the control cable
(UTP).
Low voltage switching contact - maximum possible con
-
tact load 12 V, 0.4 A.
CABLE: Cable with two conductors of cross section min.
0.5 mm2 Maximum length 50 m. The contact is normally
open. When the contact closes, the unit operates accor
-
ding to the ventilation rate settings.
RJ45 connector - Ethernet,
Modbus TCP, BACnet
(+12V- 27, GND- 28, CANH-
29, CANL- 30)
1.
3.
2.
4.
CANL
(30)
CANH (29)
+12V (27) GND (28)
