60
AHU Kit – Installation Instructions – 07/2023
Electrical Wiring
5
Switch S3: Digital input configuration setting (voltage/non-voltage signals)
Depending on the BMS digital input (DI) configuration, switch S3 on the CZ-CAPBC2 interface can
be set for the digital input terminals to accept either non-voltage signals from dry contacts (factory
default: “NON VOLTAGE”) or 12 – 24 V DC signals (“VOLTAGE”).
Set S3 to “VOLTAGE”,
if digital inputs are to accept
12 – 24 V DC signals
CN2
CN8
S1
S5
S3
S4
S2
CN1
DO1
(Start)
(Alarm)
(U.H.J1.A.J2)
(12V)
DO2
COM
COM
COM
DI1
DI2
DI3
AO
ON
ON
JP6
JP5
JP4
JP3
JP2
JP1
ON
OFF
D3
BOOT MODE
1
4
1 2 3 4
NON VOLTAGE
VOLTAGE
0-10V
0-140
Ω
NORMAL
+
-
AI
+
-
T10
+
-
SG
12V
GND
R/C
LINE A
(T.G)
R/C
LINE B
+
+
-
+
1
4
15
10
5
1
Keep S3 default setting “NON VOLTAGE”,
if digital inputs are to accept non-voltage signals
from dry contacts.
Important
For more details about the connection and functions of the CZ-CAPBC2 interface, please refer to
the separate installation instructions for CZ-CAPBC2.
5.3.2 PAH3 model
Terminal layout – Main terminal board (ACXA73-38670)
Terminal No.
Allocation
Function
Description
X1
l
L
X1.1
Live
Live Terminal
External Potential: 230 V AC, max. 1 A
l
N
X1.2
Neutral
Neutral Terminal
l
3
X1.3
Comm
Communication terminal
Internal potential 0 - 75 V DC
l
PE
X1.4
Protective earth
Protective Earth Conductor
Terminal No.
Allocation
Function
Description
X2
l
F1
X2.1
COM for F2
Fan Operation Signal
External Potential: max. 250 VAC 5 A
l
F2
X2.2
Fan contact
Terminal No.
Allocation
Function
Description
X3
l
FS1
X3.1
Lower Potential for FS
Float switch
(ex factory bridged)
Internal Potential: 12 V DC
l
FS2
X3.2
Higher Potential for FS
l
T10.1
X3.3
Higher Potential for T10
ON/OFF (operation/stop by external signal)
Internal Potential: 12 V DC
Default pulse signal, can be changed to static by cutting JP001
on A1 PCB
Can be also used as OFF reminder or fire prevention input by
parameter code 00002E (see relevant technical data service
manual for details)
l
T10.2
X3.4
Lower Potential for T10
l
EX1
X3.5
Higher Potential for EXCT
EXCT Contact input
(external thermostat off switch)
Internal Potential: 5 V DC
l
EX2
X3.6
Lower Potential for EXCT
To be continued on next page.
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Summary of Contents for PAW-160MAH3M
Page 2: ...Notes...
Page 90: ...90 AHU Kit Installation Instructions 07 2023 Parameter settings 9 Notes...
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