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Siemens
RWD62 Universal controller
CE2N3342en
Building Technologies
2017-12-05
The universal input X1 is used as the primary input for a LG- Ni 1000 temperature sen-
sor, a Pt 1000 temperature sensor or a DC 0…10 V active input.
The universal input X2 is used as the secondary input for a LG-Ni 1000 temperature
sensor, a Pt 1000 temperature sensor, an active/passive remote setpoint transmitter or
a DC 0…10 V active input.
The digital input D1 is used to select the day or night changeover. Changeover occurs
via potential-free contacts between D1 and M.
Each output Y (Y1, Y2) can be configured for either reverse or direct acting. The modu-
lating voltage output (Y…) controls the devices requiring a DC 0…10 V signal.
Ventilating plant with temperature control
X1
Room temperature
Y1
Heating, reverse action
Y2
Cooling, direct action
X1
Y2
Y1
Temp.
RWD62
Y
33
42
s0
1
One of the following auxiliary functions can be selected:
·
PI limiter function (absolute and relative)
·
Remote setpoint function
·
Cascade control function
·
Setpoint compensation
·
Winter/summer operation
·
Maximum priority
Additionally, the day and night operation mode is available.
The limiter function with PI control enables absolute
(or relative) maximum or minimum limitation of the
supply air temperature (X2).
When the value drops below or exceeds the limiter
setpoint, the limiter function controls and takes priority
over the main setpoint.
X1
Y2
Y1
Temp.
RWD62
Y
X2
33
42
s0
2
A remote setpoint transmitter (FZA21.11, QAA25 or
QAA25/AP), connected to X2 and configured accord-
ingly, enables setpoint adjustment.
Active measurement from 0…10 V DC corresponding
adjustable range from –100 to 8000
Passive measurement from 0…1000
W
corresponding
adjustable range from –100 to 8000
X1
Y2
Y1
Temp.
RWD62
Y
X2
33
42
s0
3
Universal input X1
Universal input X2
Digital input D1
Analog outputs
Example
Auxiliary functions
PI limiter function
Remote setpoint
Cascade control
