Cables Connection - RHOSS KCMS/PCM Instrucciones De Uso

EN

Cables connection

networ k serial cable
All networ k c ards must be connected to one another with s hielded
cable (two cables + shi eld)
C
Rx/Tx-
Rx/Tx+
GND
S
Prepar ation of the conductors and connection to the board
We rec ommend the heading of the conductors with ter minal pins of
appropriate secti on s o as to avoi d short-circuits in the various
conductors. The pins must be c onnected to the serial card removable
terminal which mus t be pr e-empti vel y disconnec ted from the c ard itself.
Rx/Tx-
Rx/Tx+
GND
Closed lin e resistance connection (R)
A closed line resistance mus t be connected between ter minals 2 and 3
(Rx and T x) of 120 ohm ¼ Watt (not included) on the first networ k c ard,
connected to the water c hiller/heat pump, and the last network card,
connected to the termi nal unit. D o not make star connec tions. Use
chain c onnecti ons.
Rx/Tx-
Rx/Tx+
GND
Depending on the cr oss-section of the cable used, the two following
connections, referred to as sol ution A and B, are possi ble:
A Solution for cables with wires of cross-s ection up to 0.5 mm
Solution for cables with wires of cross-s ection greater than 0.5
B
2
mm
C1 Shielded c able with wires of 0.5 mm
C2 Shielded c able with wires of 1.5 mm
C3 Shielded c able with wires of 0.75 mm
M Additional termi nal board (not included)
Lmax Maxi mum length 10÷20 c m
Rx/Tx-
Rx/Tx+
GND
C = shielded cable
S = Shiel ded cable's screen
C
S
R
C
S
2
maximum cross-section
2
maximum cross-section
2
cross-sec tion
Solution A
A
C1
8
S
S
C1
ALLEGATI / ENCLOSED DOCUMENTS / ANNEXES / ANLAGEN / ANEXOS
Rx/Tx-
Rx/Tx+
GND
All CMS-Master and CMS-Slave c ards mus t be connected to one
another with a scr een ed cable (2 wir es + scr een).
S
PCM control panels must be connected with a screened cable (3
wires + screen).
S
2
149
Solution B
B
M
C3
8
H-
H+
GND
S
L max
CMS-CMVI cable
C = shielded cable
S = Shiel ded cable's screen
C
PCM cable
C = shielded cable
S = Shiel ded cable's screen
C
C2
S
S
C2