Dip Switch Function - Mitsubishi Electric AHU-KIT-SP Manual

5. DIP switch function

Item SW
-1 Analogue input switching
-2 Modbus baudrate (bps)
SW7 Black
-3 Modbus parity
-4 Compressor control
DipSW
-1 Digital output: X4d switching
Reserve
-2
SW8 Black
-3 Reserve
-4 Reserve
・SW8-2, SW8-3, SW8-4 are reserve.
Be sure to set OFF.
【SW7-4】 OFF: Capacity Control, ON: Temperature Control
・The compressor control can be selected in 2 patterns by SW7-4.
(1) SW7-4 OFF: Capacity Control
・When capacity control is set (default setting), the required capacity is directly commanded to the compressor.
・In the following way, 0% to 100% of the outdoor unit (compressor capacity) can be specified as the required capacity.
① Depending on the input voltage (0–10 V) or input current (4–20 mA) from the analog input, the corresponding required capacity is sent to the outdoor unit.
② With Modbus communication, the required capacity is commanded to the outdoor unit at 0–100%.
③ In analog input and Modbus communication above, directives from Modbus commnunication take precedence.
Once Modbus sends 0–100% command, the analog input will be disabled thereafter.
(2) SW7-4 ON: Temperature Control
・When temperature control is set, the compressor is controlled by the difference between the return air sensor value of the AHU interface and the set temperature.
・Controls the outdoor unit so that the return air sensor value approaches the set temperature.
Contents Remarks
ON: 4–20ｍA
OFF: 0–10V
ON: 9600bps
OFF: 19200bps
ON: non parity + 2 stop bits
OFF: even parity + 1 stop bit
ON: Temperature Control
OFF: Capacity Control
ON: cooling/heating
OFF: run/stop
Always OFF
Always OFF
Always OFF
DIP SW
MODEL NAME
Air Handling Unit Interface
MODEL TYPE
AHU-KIT-SP
ISSUE CLASSIFICATION
SPECIFICATION
MORIKAWA
DWG NO.
PSZ000Z308
21.09.17
REV.MARK PAGE
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