Technical Data - Siemens RDF302/VB Manual

Power supply
Caution
Outputs
Note!
STOP
Caution
Inputs
Modbus
Siemens
Smart Infrastructure
7.

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.
Fan control Q1, Q2, Q3-N
Rating
Fans must NOT be connected in parallel!
Connect one fan directly, for additional fans, one
relay for each speed.
Control output Y11-N / Y21-N (N.O.)
Rating
No internal fuse!
External preliminary protection with max C 10 A circuit breakers in the supply line
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, heating/cooling
changeover sensor, operating mode switchover
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
RDF302 Basic documentation
AC 230 V
III
50/60 Hz
Max. 7VA / 3.7 W
AC 230 V
5 mA...5(2) A
AC 230 V
5 mA...5(2) A
**)
NTC (3 k at 25 ° C)
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
).
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CE1P3079en
2022-06-17