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Siemens RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation CE1P3181en
Building Technologies Functions 19 Jun 2009
4.8 Control outputs
Different control output signals are available depending on the thermostat type, the
position of DIP switches 4 and 5, and parameters P46 and P47 (see section 4.7.2).
C
ontrol output
Product no.
2-position
2-position
PWM
3-position DC 0…10 V
RDG100, RDG100T Y1, Y2, Y3
(3 x N.O.)
Y1, Y3,
(2 x PWM)
Y1/Y2, Y3/Y4
(2 x
/ )
RDG110 Y11/Y12, Y21/Y22
(2 x SPDT)
RDG140 Y10, Y20
(2 x DC 0…10 V)
RDG160 Y10, Y20
(2 x DC 0…10 V)
The valve or compressor receives the OPEN/ON command via control output Y1 or
Y3 (RDG110: Y11, Y21) when
1. the acquired room temperature is below the setpoint (heating mode) or above
the setpoint (cooling mode).
2. the control outputs have been inactive for more than the “Minimum output off-
time” (factory setting 1 minute, adjustable via parameter P48).
OFF command when
1. the acquired room temperature is above the setpoint (heating mode) or below
the setpoint (cooling mode).
2. the valve has been active for more than the “Minimum output on-time” (factory
setting 1 minute, adjustable via parameter P49).
The electrical heater receives an ON command via the auxiliary heating control
output (Y…, see Mounting Instructions) when
1. the acquired room temperature is below “setpoint for electrical heater”
2. the electrical heater has been switched off for at least 1 minute
The OFF command for the electrical heater is output when
1. the acquired room temperature is above the setpoint (electrical heater)
2. the electrical heater has been switched on for at least 1 minute
A safety thermostat (to prevent overtemperatures) must be provided externally.
This function is available with RDG100 and RDG100T only.
Heating: Output Y1 provides the OPEN command, and Y2 the CLOSE command
to the 3-position actuator. Cooling: Idem with Y3 and Y4.
The factory setting for the actuator's running time is 150 seconds. It can be
adjusted via parameters P44 (Y1 and Y2) or P45 (Y3 and Y4).
The parameters are only visible if 3-position is selected via DIP switches 4 and 5.
1. When the thermostat is powered up, a closing command for the actuator
running time + 150% is provided to ensure that the actuator fully closes and
synchronizes to the control algorithm.
Overview of control
outputs
ON/OFF control signal
(2-position)
Electrical heater
control signal
(2-position)
Caution
3-position
control signal
Synchronization
35


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