Basic Documentation

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Siemens RDU341 Basic Documentation CE1P3172en
Building Technologies 2017-02-17
3.7 Control outputs
3.7.1 Overview
Different control output signals are available. They need to be defined during
commissioning (see below).
Control output
Product no.
ON/OFF 3-position DC 0…10 V
RDU341 Y21 -- Y10
The demand calculated by the PI control from the current room temperature and
setpoint is provided to the damper actuator as a continuous DC 0...10 V signal via
output Y10.
The electric heater receives an ON command via the auxiliary heating control
output Y21:
1. When the acquired room temperature is below “setpoint for electric heater”.
2. When the electric heater has been switched off for more than 1 minute.
The OFF command for the electric heater is output:
1. When the acquired room temperature is above the setpoint (electric heater).
2. When the electric heater has been switched on for more than 1 minute.
A safety thermostat (to prevent overheating) must be provided externally.
3.7.2 Control outputs configuration (setting via DIP switches
or tool)
Use DIP switch #3 on the inner side of the front panel to commission the signal
type of Y10 prior to snapping it to the base.
DIP switch number 3
DC 0…10 V output signal normal (factory setting) OFF
DC 0…10 V output signal inverted (DC 10...0 V) ON
If the application is configured via tool (DIP switches #1 and #2 = OFF), then the
signal type of Y10 must also be configured via tool.
Note: During startup, the controller reloads the control parameter factory settings
after each DIP switch settings change.
Overview of control
outputs
DC 0..10 V control
signal
Electric heater control
signal
(2-position)
Caution