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Building Technologies
Central communication unit OZW775 V2.0
CE1N5663en
HVAC Products
29.10.2008
Connection diagrams
D2
M
D3
D4
M
D5
D6
D8
M
M
D1
G
56
6
2G
0
2
D7
Q21 Q22 Q31 Q32
G0
X1 M X2 X3 M X4 X5 M X6 X7 M X8
CE- CE+
Q73 Q74 Q83 Q84
Q11 Q12
Q41 Q42
Ethernet
RJ45
Modem
D1…D8 Digital inputs
X1…X8 Universal
inputs
M
Ground for digital inputs, measuring ground for universal inputs
CE-
KNX bus connection (negative)
CE+
KNX bus connection (positive)
G, G0
Operating voltage AC 24 V
Q… Relay
outputs
G
G
G0
G0
K1
56
63A
02
AC 24
V
Q2
1
CE-
X2
M
F2
F1
B1
Ethernet
X3.......X8
X1
D3.......D8
D2
M
D1
Q2
2
Q3
1
Q3
2
Q7
3
Q7
4
Q8
3
Q8
4
B2
N2
N3
KNX
0...10 V
Q1
1
Q1
2
Q4
1
Q4
2
Ethernet
RS
-2
3
2
RJ45
CE+
Modem
N1
N
N
L
K2
K3
L
N1
Central communication unit OZW775
N2, N3 Synco device in KNX network
F1, F2
Device with potential-free contact output
B1
Sensor with passive signal
B2
Transmitter with active signal
K1, K2 Contactor (control by relay with NC contact)
K3
Contactor (control by relay with NO contact)
RJ45 plug (screened), standard assignment as per AT&T256.
1 Tx
+
5 Not
used
2 Tx
–
6 Rx
–
3 Rx
+
7 Not used
1
32
06Z
01
2 3 4 5 6 7 8
56
63
Z21
4 Not
used
8 Not used
Modem connection (D-pins, 9-pin), interface definition as per RS-232.
1
DCD Data carrier detect
6
DSR
Data set ready
2
RXD
Received data
7
RTS
Request to send
3
TXD
Transmit data
8
CTS
Clear to send
4
DTR
Data terminal ready
9
NC
Not connected
56
63
Z
22
6
7
8
9
1
2
3
4
5
5
GND Signal ground
Connection diagram
Connection diagram
Pin assignment
Ethernet card OZZ7E5
Modem connection,
central communication
unit