Air Handling Unit Interface
AHU-KIT-SP
MORIKAWA
SPECIFICATION
PSZ000Z308
16/38
MODEL NAME
MODEL TYPE
ISSUE
CLASSIFICATION
DWG NO.
REV.MARK PAGE
21.09.17
Terminal
Function
ON
OFF
X4a
Outdoor unit/interface error
Error
Normal
X4b
Compressor ON
Compressor ON
Compressor OFF
X4c
Defrost ON
Defrost ON
Defrost OFF
X4d
Function selectable*
Run
Stop
Function
ON
OFF
ON
Operation mode output
Heating
Cooling
Run/stop
Run
Stop
(Fan ON/OFF)
(Fan ON)
(Fan OFF)
OFF
Digital Output:
X4d
DipSW8-1
Output circuit
●Digital output circuit
・
The digital output terminal output ON/OFF status.
・
The functions of the digital output are as follows.
●LED output circuit
・
The LED output shows the normal/abnormal status of the system.
・
LED 1 (green): blinks at 0.5 sec intervals during normal operation.
・
LED 2 (red): flashes when abnormal (lights out when normal).
The number of flashes changes depending on the error status. For details, refer to (13) error display.
Input/output circuit
・
Input/output functions are as follows.
Item
Connector Housing
X1
2P
Remote control
X5
3P
Modbus
2P
2P
X0
5P
Cascade control (reserve)
Power (X0-2 is an empty port)
Function
Input/output
X7
Cascade control
・
X5 : Modbus communication circuit terminal.
X5-1
A polor
X5-2
B polor
X5-3
GND
JX1
1–2: not available
(termination)
2–3: available 100
Ω
・
X7 : Cascade connection terminal.
However, X7
-
3 and X7
-
4 are reserve circuits.
(*) Setting of Xd4 can be changed by SW8
-
1.
Digital output
Voltage free a contact output
X4a
X4b
X4c
X4d