Technical Data - Siemens RDF302 Documentation

Power supply
Outputs
Inputs
Modbus
Operational data
Siemens
Building Technologies
7.

Technical data

Rated voltage
Frequency
Power consumption
Fan control Q1, Q2, Q3-N
Rating
Control output Y11-N / Y21-N (N.O.)
Rating
Multifunctional input X1-M/X2-M
Temperature sensor input:
Type
Temperature range
Cable length
Digital input:
Operating action
Contact sensing
Parallel connection of several thermostats
for one switch
Insulation against mains voltage (SELV)
Function of inputs:
External temperature sensor, heating/cooling
changeover sensor, operating mode switchove
contact, dew point monitor contact, enable
electrical heater contact, fault contact,
monitoring input
Interface type
Bus current
Modbus topology:
See Modbus manual (MODBUS over serial line specification and implementation
guide from http://www.modbus.org
Switching differential, adjustable
Heating mode (P30)
Cooling mode (P31)
Setpoint setting and range
Comfort (P08)
Economy (P11-P12)
Protection (P11-P12)
Multifunctional input X1/X2
Input X1 default value (P38)
Input X2 default value (P40)
Built-in room temperature sensor
Measuring range
Accuracy at 25 °C
Temperature calibration range
Settings and display resolution
Setpoints
Current temperature value displayed
RDF302 Basic documentation
AC 230 V
50/60 Hz
Max. 7VA / 3.7 W
AC 230 V
Max. 5(2) A
AC 230 V
Max. 5(2) A
QAH11.1 (NTC)
0...49 °C
Max. 80 m
Selectable (NO / NC)
SELV DC 0...5 V / max 5 mA
Max. 20 thermostats per switch
4 kV, reinforced insulation
Selectable
X1: P38
X2: P40
RS485 Modbus RTU,
Wire (ref.): 16 AWG, 1 pair,
shielded serial line with 1.5 mm
and length < 1200 m
Max. 50 mA
).
2 K (0.5...6 K)
1 K (0.5...6 K)
21 °C (5...40 °C)
15 °C/30 °C (OFF, 5...40 °C)
8 °C/OFF (OFF, 5...40 °C)
Selectable 0...8
3 (Op. Mode switchover)
1 (External temp. sensor)
0...49 °C
< ± 0.5 K
± 3.0 K
0.5 °C
0.5 °C
2
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CE1P3079en
07 Dec 2011