Data Sheet for Product

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Siemens RDF880KN… A6V11282546_en--_e
Smart Infrastructure Touch Screen Flush-mount Room Thermostats with KNX Communications 2021-02-26
Technical data
Power supply
Rated voltage
AC 230 V
Overvoltage category
III
Frequency
50/60 Hz
Power consumption
Max. 6.0 VA / 2.1 W
No internal fuse.
External preliminary protection with max C 10 A circuit breaker required in all cases.
Outputs
Control output Q11, Q12, Q14 (SPDT)
Rating Min, Max resistive (inductive)
AC 24…230 V
Min. 10 mA, Max. 5(2) A
No internal fuse.
External preliminary protection with max C 10 A circuit breakers in the supply line
(Q11) required in all cases.
Inputs
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)
See “Equipment combinations”
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
Function of inputs:
External temperature sensor, window contact, fault
contact, monitoring input
Selectable
X1: P38
X2: P40
KNX bus
Interface type
KNX, TP1-64
(electrically isolated)
Bus current
5 mA
Bus topology: See KNX manual (Reference documentation, see below)
Operational data
Switching differential, adjustable
Heating mode (P30)
1 K (0.5...6 K)
Setpoint setting and range
Comfort (P08)
Economy (P11)
Protection (P65)
21 °C (5...40 °C)
15 °C (OFF, 5...40 °C)
8 °C (OFF, 5...40 °C)
Multifunctional input X1/X2
Input X1 default value (P38)
Input X2 default value (P40)
Selectable 0, 1, 3, 6, 7, 8
0 (no function)
0 (no function)
Built-in room temperature sensor
Measuring range
Accuracy at 25 °C
Temperature calibration range
0…49 °C
< ± 0.5 K
± 5.0 K
Settings and display resolution
Setpoints
Current temperature value displayed
Built-in room humidity sensor
Measuring range
Accuracy at 25 °C
Humidity calibration range
Settings and display resolution
Display resolution
0.5 °C
0.5 °C
0…100%
± 5% r.h.
± 20%
1% r.h.
Caution
Caution