Function - Mitsubishi Electric AHU-KIT-SP Manual

3. Function

AHU interface outputs outdoor unit information to the outside. It also controls the compressor speed of the outdoor unit in response to external input.
Some settings can be changed by Modbus communication.
●Input/output list #1 of AHU interface
SW
Item
SW1 Yellow Interface address
SW2 Reserve
Yellow
SW3 Reserve
Red
RotarySW
SW4 Reserve
Red
SW5 Yellow Modbus address (ones)
SW6 Yellow Modbus address (tens)
-1 Analogue input switching
-2 Modbus baudrate (bps)
SW7 Black
-3 Modbus parity
DipSW -4 Compressor control
Digital output: X4d switching
-1
Reserve
-2
SW8 Black
-3 Reserve
Reserve
-4
JX1 Modbus termination switching
3P
ShortPIN
JX2 Analogue input switching
3P
JX3 3P Reserve
Contents
Remarks
0-F
Always 0
Always 0
Always 0
0–9
0–9
ON: 4–20ｍA
OFF: 0–10V
ON: 9600bps
OFF: 19200bps
ON: non parity + 2 stop bit
OFF: even parity + 1 stop bit
ON: Temperature Control
OFF: Capacity Control
ON: cooling/heating
OFF: run/stop
Always OFF
Always OFF
Always OFF
1–2 short: not available
2–3 short: available 100Ω
1–2 short: 0–10V
2–3 short: 4–20mA
Always 2–3: short
Note 1: Use the "Reserve" switch with OFF or 0 setting.
Note 2: The SW setting follows the setting at power-on.
Be sure to set SW at installation.
To change the SW setting after turning on the power, the power must be turned off once.
MODEL NAME
Air Handling Unit Interface
MODEL TYPE
AHU-KIT-SP
ISSUE CLASSIFICATION
SPECIFICATION
MORIKAWA
DWG NO.
REV.MARK PAGE
PSZ000Z308
21.09.17
6/38