Optional Functions - Hitachi HC-A8MB Installation And Operation Manual

OPERATION
Offset
18
?
N O T E
• Register address is calculated as: 5000+(Modbus_Id*200)+offset
• Modbus_Id as configured by configuration software

5.4 OPTIONAL FUNCTIONS

Some optional functions of the indoor units have been added so that they can be managed from the BMS.
Offset
0
1
2
3
4 c8 (Control by the temperature sensor of the remote control switch)
5
6 Cd (Stop of indoor unit fan during cooling Thermo-OFF conditions)
7 CE (Stop of indoor unit fan during heating Thermo-OFF conditions)
8 d1 (Management of indoor unit operation after a power supply cut off -option 1)
9 d3 (Management of indoor unit operation after a power supply cut off -option 2)
10 d4 (RPI(M) Prevention of low air outlet temperature in cooling mode)
11 d5 (Prevention of low air outlet temperature in heating mode)
12 E1 (KPI: Ventilation mode / Econofresh cooling mode)
13 E2 (KPI: Increase of air supply volume / Econofresh enthalpy Sensor)
14 E4 (KPI: Pre-cooling / preheating period / Econofresh: CO2 sensor)
E8 (Control for stop of the indoor unit fan during heating Thermo-OFF conditions
15 (with remote sensor THM-R2AE connected to the THM4 connector in the indoor
16
17 Eb (Indoor unit fan control during cooling Thermo-OFF conditions)
18 EE (Control in "Automatic" indoor fan speed mode)
19 EF (Control in "Automatic" indoor fan speed mode (supporting High H))
20 H4 (KPI: Operation modes for the ventilation unit with energy recovery)
21
K6 (Selection of allowed operation modes when the control sensor of the indoor
22
?
N O T E
• Register address is calculated as: 40000+(Modbus_Id*100)+offset
• Modbus_Id as configured by configuration software
19 PMML0351A rev.4 - 04/2020
Description
Power Control Possible
Description
b1 (Heating temperature compensation)
b2 (Circulation function at heating Thermo-OFF)
b4 (Change of filter cleaning period)
c5 (Static pressure selection)
Cb (Selection of forced stoppage logic)
unit PCB)
E9 (Intermittent fan operation in heating stop)
K5 (Detection level of the motion sensor kit)
unit is set by C8 function)
Values
0: Not possible
1: Possible
Values
0~4
0~1
0~4
0~2
0~2
0~1
0~1
0~1
0~1
0~1
0~1
0~1
0~2
0~1
0~2
0~1
0~1
0~2
0~1
0~1
0~1
0~2
0~3
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Read
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