Carel DLAQ2DF100, User Manual

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27
ENG
"humiFog direct" +0300073EN rel. 1.4 - 29.03.2022
9. MAIN/SECONDARY NETWORK OF HUMIDIFIERS
9.1 Description of the Main/Secondary
system
To extend humidifi cation capacity in an individual zone, several
humidifi ers can be connected together in a Main/Secondary system. For
example, if humidifi cation request is 160 kg/h, a Main/Secondary system
can be created with two 80 kg/h humiFog direct single-zone unit.
A maximum of 3 Secondary units can be connected to a Main, meaning
a total of 4 humidifi ers in the same system.
The Main and Secondary units are connected using a local Ethernet
network, and in the case of just two units (one Main and Secondary)
involves a direct connection between the two unit controllers via
Ethernet RJ45 Category 5 cable.
Main
Secondary
Fig. 9.a
If the Main/Secondary system comprises three or more units (maximum
4), a network switch is required.
Main Secondary
Secondary
Fig. 9.b
The Ethernet port is available on the humidifi er’s c.pHC controller:
M
2
M
9
M8 M1 M5 M6 M1
2
1 1 2 3 4 5 6 7 8 2 1 1 3 2 3 1 2 2 1 2 1 2
Fig. 9.c
Note : use Ethernet CAT-5 STP cable, maximum length 100 m. To
connect the shield, use the earth connector provided on the controller.
9.2 Network switch for Main/Secondary
connection
The Main/Secondary connection of more than two units requires the use
of an industrial grade switch.
Carel markets a switch (P/N: KITSE08000) that can connect a maximum
of eight units (8 Ethernet ports). If necessary, use several KITSE08000
switches with a cascaded arrangement.
Main technical specifi cations of the KITSE08000 switch:
Number of ports 8
Installation DIN rail
Operating temperature -10 to 60 °C (14-140 °F)
Power supply 12/24/48 VDC
18-30 VAC (47-63 Hz)
Current @24 VDC 0.13 A
Protection IP30
Tab. 9.a
9.3 Type of Main/Secondary system
installation
The Main/Secondary system features one main unit (Main), which
manages operation of the secondary units (Secondarys). The external
signal or probe connections, depending on the set control type, are made
to just one of the humidifi ers in the system. The unit that the signal is
connected to will automatically be identifi ed as the Main. Consequently,
the Main does not need to be especially confi gured..
Main
Secondary
Secondary
main probe
or external signal
While the Main unit is powered on, the system will be able to operate
even in the event of malfunctions on the Main (alarms, stopped
production,…), as the unit’s controller will send all the required data to
the Secondarys. Obviously, unless redundancy has been factored into the
total humidifi cation capacity, this case will be lower than requirements.
If the Main is switched off completely, the Main/Secondary system will not
be able to read the control/probe signals. Consequently, it is suggested
to connect all the humidifi ers in the system (or at least two units) to the
external signal or fi t them with independent probes.