AERMEC Multichiller-Evo, Руководство пользователя

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Control system, equipped with metal electric box (for wall-mounting);
this part contains the main board and touch-screen display to manage
the user interface;
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Wall-mounting brackets for Multichiller-Evo metal box;
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Expansion module formed by a plastic electric box (for wall-mounting)
with pCOe expansion board;
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4 NTC probes with 15 m cable;
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4 fairleads for NTC probes;
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1 fairlead for power supply cable;
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2 fairleads for serial connection;
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1 fairlead for pCOe power supply;
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3 probe sumps;
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Documentation in 5 languages;
Material supplied
Notes on the serial connection
Regardless of the type of power supply or earthing, use a shielded three-
pole cable connected as shown. If the network exceeds the 100 m, the
termination resistor is required (120Ω).
J26 Fbus2
Multichiller-Evo
G G0
RS485
Chiller (1)
RS485
Chiller (n)
R = 120 Ω
R = 120 Ω
Power
supply
Shield earth connection mode:
The serial cable shield must be earth connected in different ways, depen-
ding on the length, as shown (A=FBus terminal, B=BMS terminal).
(a): only 1 end earthed with jumper between the shields:
L >300 mm
L > 300 mm
A B B
(b): 2 earth-connected ends:
L >300 mm
L > 300 mm
A B B
(c): only 1 earth-connected end:
L >300 mm
L > 300 mm
A B B