Operation With Water Chiller; Data Available - Hitachi HC-A32MB Installation And Operation Manual

3.2 Operation with Water Chiller

3.2.1

Data available

Address
0 Device Type
1 SYSTEM_ADDRESS
2 ONOFF_SET
3 MODE_SET
4 TEMP_SET_C
5 TEMP_SET_H
6 CENTRAL_SET
7 ONOFF_STATUS
8 MODE_STATUS
9 TEMP_C_STATUS
10 TEMP_H_STATUS
11 WATER_INLET
12 WATER_OUTLET
13 AMBIENT_TEMPERATURE Ambient temperature
14 OPER_CONDITION
15 ERROR_CODE_CH
16~21 ERROR_CODE_CYC
22 (Not used)
23 (1) (2) WATER_INLET_H
24 (1) (2) WATER_OUTLET_H
25~31 (Not used)
?
Notes:
– Offset Position is: 40000 + N*32 + Address as shown in table, where N is Water Chiller Address.
– Status (real value) and Set (value ordered) parameters have usually the same value but, in some cases, some of them can be
different. It is recommended to use Set parameters for normal control.
– (*) When Temperature Setting and Operation Mode are changed at the same time, order first the operation mode change and
later set the desired temperature.
– (1) Application:
18
PMML0191A rev.2 - 05/2013
Name Description
Type of Device
Chiller Address
On/Off setting order:
Mode Setting order
COOL setting temperature
HEAT setting temperature
Central Setting
On/Off Status
Mode Status
COOL Setting Temperature
Status
HEAT Setting Temperature
Status
Inlet temperature
Outlet temperature
Unit operation condition
Alarm code for general
CHILLER alarm
Alarm code for cycle alarm
(1~6)
(Not used)
HOT inlet Temperature
HOT outlet Temperature
(Not used)
Operation
Values
0: Unit not found
43: AG
60: AG2
0~ 7
0: Stop
1: Run
0: Cool
1: Heat
(see note *)
0: Local
1: Remote
0: Off
1: On
0: Cool
1: Heat
B0: Current Limit (Not used)
B1: Thermo ON/OFF
B2: Compressor Guard Active
B3: Waiting for Pump Feedback
B4: Abnormal Pressure
B5: Alarm
B6: Manual Fan
B7: Run/Stop
(Not used)
(Not used)
Read/Write
Read
Read
Read/Write
Read/Write
Read/Write
Read/Write
Read
Read
Read
Read
Read
Read
Read
Read
Read
Read
(Not used)
Read
Read
(Not used)