Ferroli RHA series User Manual

58
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 qualied personnel.
The company assumes no responsibility for any damage to the machine due to misuse of the serial interface.
Modbus RTU
RS485
chiller
MASTE
R
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

Ferroli RHA series Specifications

General

Brand	Ferroli
Model	RHA series
Category	Chiller
Language	English