Galletti MYCOMFORT MEDIUM Manual Del Usuario página 22

MYCOMFORT MEDIUM
AVAILABLE CONFIGURATIONS (PARAMETER P00)
031
> System pipes: 4
> Valve: 2-3 WAYS
> Heating element: NO
> Fan speed: 3
G B
> Summer/winter switching logic: LOCAL MANUAL
032
> System pipes: 4
> Valve: 2-3 WAYS
> Heating element: NO
> Fan speed: 3
> Summer/winter switching logic: REMOTE MANUAL
033
> System pipes: 4
> Valve: 2-3 WAYS
> Heating element: NO
> Fan speed: 3
> Summer/winter switching logic: AUTOMATIC AIR SIDE
034
> System pipes: 4
> Valve: 2-3 WAYS
> Heating element: NO
> Fan speed: 4
> Summer/winter switching logic: LOCAL MANUAL
035
> System pipes: 4
> Valve: 2-3 WAYS
> Heating element: NO
> Fan speed: 4
> Summer/winter switching logic: REMOTE MANUAL
036
> System pipes: 4
> Valve: 2-3 WAYS
> Heating element: NO
> Fan speed: 4
> Summer/winter switching logic: AUTOMATIC AIR SIDE
037
> System pipes: 4
> Valve: NO
> Heating element: YES
> Fan speed: 3
> Summer/winter switching logic: LOCAL MANUAL
038
> System pipes: 4
> Valve: NO
> Heating element: YES
> Fan speed: 4
> Summer/winter switching logic: LOCAL MANUAL
FC66002605 - rev. 02
È severamente vietata la riproduzione anche parziale di questo manuale / All copying, even partial, of this manual is strictly forbidden
SERIAL COMMUNICATION
Connection to the RS485 communication network
The bus-type communication network consists of a 2-conductor shielded
cable connected directly to the RS485 serial ports of the controls (terminals
A, B and GND).
"For the network use a cable AWG 24 (diam. 0.511 mm)"
For more detailed information on the choice of cable, refer to the "Guide to
RS485 networks" (RG66007420).
The communication network must have the following general structure (figure 5):
Figure 5 (1) Common=shield
Figure 5 (2) RS232-RS485 Converter
Figure 5 (3) Pull up
Figure 5 (4) Pull down
Figure 5 (5) Termination
where LT represents the termination resistors at either end of the network.
NB:
(1) Comply with the polarity of the connection: indicated with A(+) and B(-)
(2) Avoid ground loops (ground shield at one end only)
"ERGO" solution FIGURE 6
In the case of the "ERGO" solution, the master function is performed by the personal
computer in which the ERGO supervision software is installed. This computer is
connected to the network via an RS232-RS485 converter, which supplies power to
the network itself.
Figure 6 (1) RS232-RS4854 (USB-RS485) converter
If the serial converter provided is used, it will be necessary to connect a termination resistor
(120 ohms) only to the last device of the bus network, since one is already present in
the converter itself.
"SMALL" solution
In the case of the "SMALL" solution a termination resistor will have to be installed on
both controllers at the furthest ends of the network.
SUGGESTED LAYOUT OF NETWORK (FIGURE 7)
Figure 7 (T1) Terminal 1
Figure 7 (T2) Terminal 2
Figure 7 (T3) Terminal 3
Figure 7 (TN) Terminal N
Figure 7 (A) RS232-RS4854 Converter
Figure 7 (B) Secondary branches (L < 20m)
Figure 7 C) Main branch of network (L < 1000m)
WARNING:
> Maximum length of the main branch: 1000 m
> Maximum length of each secondary branch: 20 m
WARNING:
> Use a shielded cable AWG24
WARNING:
> Colours suggested for the communication network: A (+) Color White,
B (-) Color Black
If several levels need to be wired, a SINGLE MAIN BRANCH line must be set up to guarantee
a bus-type network (see figure 8):
Figure 8 (T1) Terminal 1
Figure 8 (T2) Terminal 2
Figure 8 (T3) Terminal 3
Figure 8 (T4) Terminal 4
Figure 8 (TN) Terminal N
Figure 8 (TN + 1)Terminal N + 1
Figure 8 (A) 1st level main branch
Figure 8 (B) 2nd level
Figure 8 C) 2nd level main branch
Figure 8 (D) Secondary branches (L < 20m)
Figure 8 (E) RS232-RS4854 Converter
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