Mitsubishi Electric AHU-KIT-SP Manual page 4

Select control method and settings
●
The outdoor units can be controlled by one of two methods (Capacity Control or Temperature Control).
Select the suitable control combination (No.1-No.4) based on the equipment to be installed.
Correct Master/Slave settings are required when using cascading control.
Check each setting by referring to table 1-1, 1-2 in this section.
◇Capacity Control SW7-4：OFF (External input:0-10V / 4-20mA / 0-100% )
System diagram
AHU
Controller
Analog Input
Digital
0～10V or 4-20mA
Input/Output
Modbus
0-100%
AHU Interface
Master
Master
Modbus
Comp. speed
Controller
The following control combinations are to be used for Capacity Control.
Table 1-1
Analog input Modbus
No.
(0-10V/4-20mA) (0-100%)
★
1 △ (*1)
★
2 ×
★：Main Controller for Capacity Control
△：Optional Controller
×：Not available
(*1) Analog input will be invalidated once 0-100% command is sent from the Modbus controller.
Power reset is required to restore analog input function.
(*2) Monitoring purpose only. Operation from remote controller is not possible.
(*3) Select either of the following ways to Run/Stop the AHU system:
- Digital input (ON/OFF)
- Modbus command (Run/Stop)
AHU Interface AHU Interface
Slave1 Slave15
Slave1 Slave15
Comp. speed Comp. speed
Remote Control AHU System
(Include SL Adaptor) How to Run/Stop
Monitoring only(*2) Digital input or Modbus(*3)
Monitoring only(*2) Digital input or Modbus(*3)
◇Temperature Control SW7-4：ON (Set temp. control:18℃⁻30℃)
System diagram
AHU
Controller
Digital
Analog input
Input/Output
Set temperature
AHU Interface
Master
Modbus
Controller
Master
Comp. speed
The following control system can be used for Temperature Control.
Table 1-2
Analog input
No. Modbus
(0-10V/4-20mA)
★ (*4)
3 ×
○ (*4)
4 ×
★：Main Controller for Temperature Control
○：Optional Controller
×：Not available
(*4) Last received operation command has priority.
(*5) Select one of the following ways to Run/Stop the AHU system:
- Digital input (ON/OFF)
- Modbus command (Run/Stop)
- Remote controller command (Run/Stop)
AHU Interface AHU Interface
Slave1 Slave15
Slave1 Slave15
Comp. speed Comp. speed
Remote Control AHU System
(Include SL Adaptor) How to Run/Stop
○ (*4)
Digital input, RC or Modbus(*5)
★ (*4)
Digital input, RC or Modbus(*5)
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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