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Siemens
RDU340… Basic Documentation
CE1P3078en
Building Technologies
Summary
2014-11-03
2 Summary
2.1 Brief
description
The devices support VAV heating and cooling systems:
·
Modulating PI / P control
·
Control depending on the room or the return air temperature
·
Output for a DC 0…10 V actuator and AC 230V electrical heater (ON-OFF)
·
Automatic or manual heating/cooling changeover
·
Operating modes: Comfort, Energy Saving and Protection
·
Two multifunctional inputs for keycard contact, external sensor, etc.
·
Adjustable commissioning and control parameters
·
Minimum and maximum setpoint limitation
·
Adjustable minimum and maximum limitation of output signal DC 0..10V
·
Output signal inversion as an option
·
Mounting on recessed rectangular conduit box, 60.3 mm fixing centers
·
AC 24 V operating voltage
2.2 Features
·
Maintain room temperature via built-in temperature sensor external room
temperature / return air temperature sensor
·
Automatic or manual changeover between heating and cooling mode
·
Select applications via DIP switches
·
Select operating mode via the operating mode button on the controller
·
Display current room temperature or setpoint in °C and/or °F
·
Minimum and maximum setpoint limitation
·
Key lock (automatic and manual)
·
Two multifunctional inputs, freely selectable for:
– Operating mode switchover contact (key card)
– Automatic heating/cooling changeover sensor
– External room temperature or return air temperature
– Dewpoint sensor
– Electric heater enable
– Alarm input
·
Minimum and maximum limitation of air flow signal DC 0..10V
·
Floor heating temperature limit
·
Reload factory settings for commissioning and control parameters
2.3 Type
summary
Product
number
Operating Voltage
Control output
L
C
D
B
a
c
k
li
g
h
t
In
fr
a
re
d
re
c
e
iv
e
r
H
o
u
s
in
g
C
o
lo
u
r
r
3 pt
on/off
DC 0..10 V
RDU340
AC 24 V
--
ü
ü
white
