Technical Data - Siemens RDF880KN Series Basic Documentation

Power supply
Caution
Outputs for
RDF880KN...
Caution
Inputs
KNX bus
Operational data
Siemens
Smart Infrastructure
8.

Technical data

Rated voltage
Overvoltage category
Frequency
Power consumption
No internal fuse!
External preliminary protection with max C 10 A circuit breaker required in all cases.
Control output Q11, Q12, Q14 (SPDT)
Rating min. and max. resistive (inductive)
No internal fuse!
External preliminary protection with max C 10 A circuit breakers in the supply line
(Q11) required in all cases.
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, window contact, fault
contact, monitoring input
Interface type
Bus current
Bus topology: See KNX manuals ("Reference documentation")
Switching differential, adjustable
Heating mode
Setpoint setting and range
Comfort
Economy
Protection
Multifunctional input X1/X2
Input X1 default value
Input X2 default value
Built-in room temperature sensor
Measuring range
Accuracy at 25 °C
Temperature calibration range
RDF880KN.. Basic documentation
AC 230 V
III
50/60 Hz
Max. 6.0 VA/2.1 W
AC 24...230 V
Min 10 mA, max. 5(2) A
See section 2.6
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
KNX, TP1-64
(electrically isolated)
5 mA
(P30) 1 K (0.5...6 K)
(P08)
21 °C (5...40 °C)
(P11)
15 °C (OFF, 5...40 °C)
(P65)
8 °C (OFF, 5...40 °C)
(P38) 0 (no function)
(P40)
0 (no function)
0...49 °C
< ± 0.5 K
± 5.0 K
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A6V12318532_en--_a
2021-03-22