Data Sheet for Product

12
Siemens
A6V12005486_en--_c
Smart Infrastructure
2021-05-17
Modbus
Interface type
RS485 Modbus RTU
Wire (ref.): 16 AWG, 1 pair, shielded serial
line with 1.5 mm
2
and length < 1200 m
Bus current
Max. 50 mA
Bus topology: See Modbus manual (Modbus over serial line specification and
implementation guide from http://www.modbus.org)
Operational data
Switching differential, adjustable
Heating (P30)
2 K (0.5…6 K)
Cooling (P31)
1 K (0.5…6 K)
Setpoint setting and setpoint range
Comfort (P08)
21 °C (5…40 °C)
Economy (P11-P12)
15 °C/30 °C (OFF, 5…40 °C)
Protection (P65-P66)
8 °C/OFF (OFF, 5…40 °C)
Multifunctional input B1 (RDF660MB/MM
only)
Selectable (0, 1, 2, 9)
Input default value (P38)
9: H/C changeover (DI)
Multifunctional input S1 (RDF660MB/MM
only)
Selectable (0, 3, 10, 11)
Input default value (P40)
3: Window contact (DI)
Multifunctional inputs X1/X2 (RDF660MB
only)
Selectable (0…11)
Input X1
3 (P38) Window contact (DI)
Input X2
1 (P40) External temperature sensor
Built-in room temperature sensor
Measuring range
0…49 °C
Accuracy at 25 °C
< ±0.5 K
Temperature calibration range
±5 K
Settings and display resolution
Setpoint
0.5 °C
Current temperature value displayed
0.5 °C