System - Mitsubishi Electric PAC-IF013B-E Manual

1

System

Using function Step
No.
by Modbus mode
1 Writing Manual
and *1
Reading
(Input and
monitoring)
2
3
4
5 Auto *2
Only Reading
6 Manual
(Only monitoring)
7 Auto
*1. Manual step mode by Modbus:
• AHU local controller can send " capacity steps" and "operation mode" by Modbus communication to the interface unit.
• Do NOT send " temperature set point" or "Drive ON/ OFF".
• DIP SW 1-1 to 1-3, and SW6 are as follows. Regarding other settings, refer to the section 2 and the installation manual.
Input type
Modbus
*2. Auto step mode by Modbus:
• AHU local controller can send " Drive ON/ OFF", "operation mode", and "temperature set point" by Modbus communication to the interface unit.
• Do NOT send " capacity request".
• DIP SW 1-1 to 1-3, and SW6 are as follows. Regarding other settings, refer to the section 2 and the installation manual.
Input type
No input (Auto step mode)
*3. Regarding thermistor positions, refer to the installation manual.
*4. Intelligent multiple outdoor unit control by Modbus:
• Input "capacity steps" signal and "operation mode" signal to the main interface unit (which connects to the ref. address 0 outdoor unit)
• Monitoring operation status of all interfaces is available. In this case, connecting to all interface units with Modbus cable is needed.
• Setting DIP SW3-6 to SW3-8, and SW4 of sub interfaces is necessary when monitering sub interfaces.
• Regarding intelligent multiple outdoor unit control, refer to the installation manual.
*5. It is recommended to select Intelligent multiple outdoor unit control.
Design local AHU controller to make sure the following points.
• Minimum capacity request should be 20% or more of total capacity.
• Operate all outdoor units when outdoor temperature is below -15 °C.
2
Input Number of
type outdoor unit outdoor unit control
Modbus 1
2-6
No input 1-5
(Auto step
mode)
"Analog" or 1-6
"Remote switch"
No input 1-5
(Auto step mode)
SW1-1 SW1-2
ON ON
SW1-1
OFF
Intelligent multiple
N/A
AHU local
controller
Apply *4 ■When not monitoring sub interfaces
AHU local
controller
■When monitoring sub interfaces
(Wiring among interface units with Modbus cable)
AHU local
controller
Not apply *5 Input all interfaces separately.
AHU local
controller
N/A
AHU local
controller
Refer to the installation manual.
SW1-3
ON
SW1-2 SW1-3
ON ON
System *3
Outdoor
Interface
unit
Remote
controller
Interface Outdoor unit
(Main) (Ref. adress: 0)
Interface Outdoor unit
(Sub) (Ref. adress: 1)
Interface Outdoor unit
(Sub) (Ref. adress: 2)
Remote
controller
Interface Outdoor unit
(Main) (Ref. adress: 0)
Interface Outdoor unit
(Sub) (Ref. adress: 1)
Interface Outdoor unit
(Sub) (Ref. adress: 2)
Remote
controller
Outdoor
Interface
unit
Remote controller
Outdoor
Interface
unit
Remote controller
Outdoor
Interface
unit
Remote controller
Outdoor
Interface
unit
Remote
controller
SW6-1 SW6-2
OFF OFF
SW6-1 SW6-2
OFF OFF