Mitsubishi Electric AHU-KIT-SP Manual
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Mitsubishi Electric AHU-KIT-SP Manual

Mitsubishi Electric AHU-KIT-SP Manual

Air handling unit interface
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Contents
1.
Specifications .................................................................................................................................................................................................................................................. 2
2.
System configuration ...................................................................................................................................................................................................................................... 3
3.
Function .......................................................................................................................................................................................................................................................... 6
4.
Rotary switch function ..................................................................................................................................................................................................................................... 8
5.
DIP switch function ......................................................................................................................................................................................................................................... 9
6.
Short PIN function ......................................................................................................................................................................................................................................... 10
7.
Input/output circuit ......................................................................................................................................................................................................................................... 11
7.1
Input circuit ............................................................................................................................................................................................................................................... 12
7.2
Output circuit ............................................................................................................................................................................................................................................ 16
7.3
Input/output circuit .................................................................................................................................................................................................................................... 16
8.
Cascade control ............................................................................................................................................................................................................................................ 17
9.
Rotation control ............................................................................................................................................................................................................................................. 18
10.
Fault backup control ...................................................................................................................................................................................................................................... 19
11.
Modbus communication ................................................................................................................................................................................................................................ 20
12.
Protection control .......................................................................................................................................................................................................................................... 32
13.
Error display .................................................................................................................................................................................................................................................. 34
14.
Installation work ............................................................................................................................................................................................................................................ 35
15.
Wiring procedure ........................................................................................................................................................................................................................................... 37
16.
External dimensions ...................................................................................................................................................................................................................................... 38
MODEL NAME
Air Handling Unit Interface
MODEL TYPE
AHU-KIT-SP
ISSUE
CLASSIFICATION
CONTENTS
MORIKAWA
DWG NO.
REV.MARK PAGE
PSZ000Z308
21.09.17
1/38
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Summary of Contents for Mitsubishi Electric AHU-KIT-SP

  • Page 1: Table Of Contents

    Modbus communication ..............................................20 Protection control ................................................32 Error display .................................................. 34 Installation work ................................................35 Wiring procedure ................................................37 External dimensions ..............................................38 MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION CONTENTS MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 1/38...

  • Page 2: Specifications

    1. Specifications AHU-KIT-SP (AHU interface) is the controller dedicated to making the AHU system by using a split type outdoor unit. AHU interface equips 0–10V and 4–20mA analog input as a basic capacity control method of the connected outdoor unit.

  • Page 3: System Configuration

    (master/slave) Multiple refrigerant system (cascade control). Heat exchanger Heat exchanger sensor Obtain the heat exchanger temperature information. Heat exchanger sensor AHU-KIT-SP Those sensors must be connected each interfaces. Master Return air sensor Obtain the return air temperature information. Return air...
  • Page 4 (*3) Select either of the following ways to Run/Stop the AHU system: 　- Digital input (ON/OFF) - Remote controller command (Run/Stop) - Modbus command (Run/Stop) MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE...
  • Page 5 40 50 60 71 100 125 140 200 250 280 2 〜 4 4 〜 6 6 〜 10 Recommended circuit MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 5/38...

  • Page 6: Function

    1–2 short: not available Modbus termination switching 2–3 short: available 100Ω 1–2 short: 0–10V ShortPIN MODEL NAME Analogue input switching Air Handling Unit Interface 2–3 short: 4–20mA MODEL TYPE AHU-KIT-SP Reserve Always 2–3: short ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 6/38 21.09.17...
  • Page 7 X0-2 is an empty port due to reinforced insulation X0-3: power L phase Green AC220–240V X0-4: power N phase AC220–240V X0-5: communication terminal MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 7/38 21.09.17...

  • Page 8: Rotary Switch Function

    Set the Modbus address in 01 – 99 (Initial address setting: 01). SW6: 3 SW5: 8 The Modbus address cannot be set to 0. MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE...

  • Page 9: Dip Switch Function

    ・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. MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO.

  • Page 10: Short Pin Function

    ・The JX3 is a reserve. Do not change from initial setting (2–3 short). PWB of AHU interface (Analog input switching) 1–2 Short : 0-10 V 2–3 Short : 4-20 mA MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 10/38 21.09.17...

  • Page 11: Input/Output Circuit

    Connect the X0-4 to the N-phase of the outdoor unit. Connect the X0-5 to the communication terminal of the outdoor unit. X0-2 is a free port. Do not connect anything. MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO.

  • Page 12: Input Circuit

    No. Designation Temperature sensor cable Temperature sensor Fastener Installation locations of the heat exchanger sensor Mounting position of temperature sensors (example) MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 12/38...
  • Page 13 MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 13/38 21.09.17...
  • Page 14 MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 14/38 21.09.17...
  • Page 15 X2-1 Run/Stop Stop MODEL NAME X2-2 Cooling/Heating Heating Cooling Air Handling Unit Interface X2-3 Emergency stop Emergency stop Emergency stop release MODEL TYPE AHU-KIT-SP X2-4 Reserve ISSUE CLASSIFICATION X2-5 Common SPECIFICATION Power supply Power supply MORIKAWA DWG NO. REV.MARK PAGE AC24V-240V 　...

  • Page 16: Output Circuit

    B polor X5-3 1–2: not available (termination) 2–3: available 100Ω MODEL NAME Air Handling Unit Interface ・X7 : Cascade connection terminal. MODEL TYPE AHU-KIT-SP However, X7-3 and X7-4 are reserve circuits. ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 16/38 21.09.17...

  • Page 17: Cascade Control

    The master calculates X_all from the following: ・Analog input or Modbus or remote control (0–10V/4-20mA, 0–100%, set temperature) ・Number of outdoor units MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 17/38 21.09.17...

  • Page 18: Rotation Control

    ・When 12 hours have elapsed since the outdoor unit started operating, the outdoor unit will be switched. *Operation switching time: 12 hours is fixed. ・This is an example of rotation control. Rotation control example MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE...

  • Page 19: Fault Backup Control

    ・Even if the outdoor unit that stopped abnormally is restored, the operation of the outdoor unit does not change. ・An example of fault backup control is shown below. MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO.

  • Page 20: Modbus Communication

    Register address range Input register 2 byte Monitoring only 30001 ～ 39999 MODEL NAME Holding register 2 byte Monitoring / control 40001 ～ 49999 Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 20/38 21.09.17...
  • Page 21 Slave address 8 bit Function Function code 8 bit Data Respons data Variable Error check CRC error check 16 bit MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 21/38 21.09.17...
  • Page 22 [Data address 30007 return air temperature display example] 30009 Request capacity 0 ～ 65535 1 %/count X_all <0.1℃/count> 10=1℃ 30=3℃ 500=50℃ 600=60℃ MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 22/38 21.09.17...
  • Page 23 － 0 ： No command 1 ： Command 30037 Modbus capacity control value display 0 ～ 65535 0.01% count 0-100% MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 23/38 21.09.17...
  • Page 24 Capacity command(Slave14) 0 ～ 65535 1 %/count 0 ～ 100% 31031 Capacity command(Slave15) 0 ～ 65535 1 %/count 0 ～ 100% MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 24/38 21.09.17...
  • Page 25 Error code display(Slave14) 0 ～ 65535 － 0 ～ 99 31063 Error code display(Slave15) 0 ～ 65535 － 0 ～ 99 MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 25/38 21.09.17...
  • Page 26 Heat exchanger temperature:Thi-R2(Slave10) -3276 -32768 ～ 32767 0.1 ℃ /count 31096 Heat exchanger temperature:Thi-R3(Slave10) -3276 -32768 ～ 32767 0.1 ℃ /count MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 26/38 21.09.17...
  • Page 27 0 ～ 65535 1 Hz/count 0 ～ 120Hz 31127 Compressor Hz display(Slave15) 0 ～ 65535 1 Hz/count 0 ～ 120Hz MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 27/38 21.09.17...
  • Page 28 0 ～ 65535 － 0:Normal 　 1:Oil return 31159 Oil return display(Slave15) 0 ～ 65535 － 0:Normal 　 1:Oil return MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 28/38 21.09.17...
  • Page 29 0 ～ 65535 － 0:Normal 　 1:Abnormal stop 31175 Abnormal stop status display(Slave15) 0 ～ 65535 － 0:Normal 　 1:Abnormal stop MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 29/38 21.09.17...
  • Page 30 0: NOP 　 1: reset time 　 all reset command 40008 Capacity Control 　 command 0 ～ 10000 0.01 /count 0–100% MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 30/38...
  • Page 31 (slave 14) Compressor MODEL NAME 41016 accumulated time 0 ～ 1 － 0: NOP 　 1: reset Air Handling Unit Interface reset command (slave 15) MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 31/38 21.09.17...

  • Page 32: Protection Control

    Anomalous stop occurs also when the AHU heat exchanger temperature at 63℃ or higher is detected for 6 minutes continuously. Compressor OFF Compressor ON AHU heat exchanger temperature (℃) MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE...
  • Page 33 4 minutes continuously less to 0.0℃, or overs to 30.0℃. Temperature drop Temperature rise MODEL NAME 4 minutes Air Handling Unit Interface 4 minutes compressor-ON MODEL TYPE AHU-KIT-SP compressor-OFF ISSUE CLASSIFICATION SPECIFICATION 0℃ 1℃ 29℃ 30℃ Return air temperature:Thi-A MORIKAWA DWG NO.

  • Page 34: Error Display

    Normal reception of slave signal Three times Emergency stop Emergency stop release Continuous * The cycle is 5 seconds (blinking 0.5 seconds). MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION SPECIFICATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 34/38...

  • Page 35: Installation Work

    2. Hang the box on the DIN rail. 3. Push the fixed part (2 places) up and fix onto the DIN rail. Make sure it is securely fastened. ●Installation clearances MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION INSTALLATION MORIKAWA DWG NO. REV.MARK PAGE...
  • Page 36 ●Remove the cover MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION INSTALLATION MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 36/38 21.09.17...

  • Page 37: Wiring Procedure

    Wind the ferrite core supplied with the ground wire for 6 turns (5 loops) and connect it to the sheet metal of the enclosure. Wire diameter: 0.75mm or more Line length: 40 cm or more (recommendation) MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION INSTALLATION MORIKAWA DWG NO. REV.MARK PAGE...

  • Page 38: External Dimensions

    16. External dimensions MODEL NAME Air Handling Unit Interface MODEL TYPE AHU-KIT-SP ISSUE CLASSIFICATION EXTERNAL DIMENSIONS MORIKAWA DWG NO. REV.MARK PAGE PSZ000Z308 38/38 21.09.17...

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