Ferroli RHA series, Installation Manual

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Protection devices HIGH PRESSURE
Through the accessory interface RS485 MODBUS ® RTU control system is able to communicate with the outside world. The outside
world means a master device, usually a supervisory system or a BMS (Building Management System), designed by the customer.
SERIAL INTERFACE: RS485 MODBUS® RTU
CAUTION :
The use of serial communication must be made by qualified personnel.
The company assumes no responsibility for any damage to the machine due to misuse of the serial interface.
Modbus RTU
RS485
chiller
MASTER SLAVE
supervisor
BMS
Communication with the machine is with
MODBUS ® RTU on RS485 serial network.
RS485 settings of the chiller
Serial communication with the chiller is only possible if
you installed accessory: interface RS485 MODBUS ®
RTU.
The default parameters of MODBUS ®-RTU are:
Serial address of chiller 1
Protocol MODBUS®-RTU
Baud rate 9600 b/s
Parity EVEN
MODBUS ® Address Table: Machine Level
(*) Type of variable/parameter: A= Analog; D = Digital; I = Integer
Parameter/Description Def Min Max U.M. Type
(*)
Decimal
Position Modbus
Modbus
HEX
R/W Notes/Meaning
Chiller on/off D 340 0154 R/W
Chiller mode 0 3 I 0 1520 05F0 R
0 = standby
1 = cooling
2 = hot
3 = shut down
Chiller capacity 0 100 % I 0 1524 05F4 R
Evaporator water inlet temperature -50.0 150.0 °C A 1 1522 05F2 R
Evaporator water outlet temperature -50.0 150.0 °C A 1 1523 05F3 R
Setpoint 1 chiller mode 7.0
5.0
-8.0 (**)
20.0 °C A 1 624 0270 R/W (**) for brine unit
Band 1 chiller mode 1.0 0.5 5.0 °C A 1 628 0274 R/W
Setpoint 2 chiller mode 7.0
5.0
-8.0 (**)
20.0 °C A 1 635 027B R/W (**) for brine unit
Band 2 chiller mode 1.0 0.5 5.0 °C A 1 638 027E R/W
Setpoint 1 heatpump mode 45.0 30.0 55.0 °C A 1 656 0290 R/W
Band 1 heatpump mode 1.0 0.5 3.0 °C A 1 660 0294 R/W
Setpoint 2 heatpump mode 45.0 30.0 55.0 °C A 1 667 029B R/W
Band 2 heatpump mode 1.0 0.5 3.0 °C A 1 670 029E R/W
Current setpoint -50.0 150.0 °C A 1 1518 05EE R
Heat recovery water inlet temperature -50,0 150,0 °C A 1 1381 0565 R
Heat recovery enable function 1 0 1 D 0 1199 04AF R/W 0 = not enabled
1 = enabled
Heat recovery setpoint temp 42,5 32,0 53,0 °C A 1 1202 04B2 R/W
Heat recovery prop band 5,0 4,0 10,0 °C A 1 1203 04B3 R/W
ALARM Chiller general 0 0 2 I 0 1519 05EF R
0 = not active
1 = active
2 = resettable
ALARM Plant high temperature 0 0 2 I 0 1245 04DD R
ALARM Plant low temperature 0 0 2 I 0 1246 04DE R
ALARM Evaporator freezing 0 0 3 I 0 1290 050A R 0 = not active
1 = automatic
2 = resettable
3 = active
ALARM Evaporator water flow 0 0 3 I 0 1292 050C R
ALARM Phase sequence 0 0 3 I 0 1371 055B R
ALARM Heat recovery water flow 0 0 3 I 0 1247 04DF R
ERROR water inlet probe 0 0 1 I 0 1335 0537 R
0 = active
1 = not active
ERROR water outlet probe 0 0 1 I 0 1325 052D R
ERROR external air probe 0 0 1 I 0 1375 055F R
ERROR Heat recovery Inlet Water probe 0 0 1 I 0 1372 055C R