Siemens RCC60.1 Bedienungsanleitung

Siemens Thermostat RCC60.1

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3026
Room Temperature
Controller
RCC60.1
for two-pipe fan coil units
Modulating PI control
Output for three-position valve actuator
Outputs for three-speed fan
Automatic heating / cooling changeover
Operating modes: normal and energy saving or OFF
Operating mode changeover input for remote control
Function for avoiding damage resulting from moisture
Operating voltage AC 230 V
Use
Typical use:
• Control of the room temperature in individual rooms that are heated or cooled with
two-pipe fan coil units.
• For opening and closing a three-position valve actuator operating on AC 230 V and
for switching a three-speed fan.
Suited for use in systems with
• automatic heating / cooling changeover
• continuous heating or cooling operation.
CE1N3026en
12.06.2003 HVAC Products
Siemens Building Technologies
Functions
The controller acquires the room temperature with its integrated sensor and maintains
the setpoint by delivering three-position control commands to the valve. The controller
provides PI control. The proportional band in heating mode is 4 K and in cooling mode
2 K. The integration time is 5 minutes.
Heating mode Cooling mode
YOut [%]
XpH w
0
100
3026D01
T [°C]
YOut [%]
w
0
100
3026D02
T [°C]
XpK
T Room temperature w Room temperature setpoint
XpH Proportional band heating YB
OutB Manipulated variable
XpK Proportional band cooling
Note: the diagrams only show the proportional part of the PI controller
The water temperature acquired by the changeover sensor (QAH11.1 + ARG86.3) is
used by the controller to switch from heating to cooling mode, or vice versa. When the
water temperature lies above 28 °C, the controller switches to heating mode, below
16 °C it switches to cooling mode. If, immediately after switching on, the water tempera-
ture lies between the 2 changeover points, the controller will start in heating mode. The
water temperature is measured at minute-intervals and the operational status updated.
Automatic
changeover
CM
HM
T
W
[°C]
3026D03
16 28
M
CM Cooling mode
HM Heating mode
TBWB Water temperature
M Operating mode
Purging function The task of the changeover sensor is to initiate the change from heating to cooling
mode even if the two-port valves are shut down for a longer period of time. To ensure
this function, the valves are opened for one minute at 2-hour intervals during off hours.
Three-position
control signal
Outputs Y1 = opening, Y2 = closing and N = neutral are used to drive three-position
actuators with a maximum running time of 150 seconds from the fully closed to the fully
open position.
When commissioning the controller, an opening signal of 200 seconds is delivered,
followed by a closing signal of 200 seconds to ensure the actuator will be fully closed.
When the actuator has reached the position calculated by the controller, a waiting time
of 30 seconds is observed in order to stabilize the outputs.
The control outputs carry AC 230 V.
Energy saver
The room temperature setpoint can be limited in increments of 1 K by making use of
the minimum and maximum limitation facility. Arbitrary setpoint readjustments can thus
be prevented.
2/8
Siemens Building Technologies Room temperature controller CE1N3026en
HVAC Products 12.06.2003
Fan operation
The fan is switched to the selected speed via control output Q1, Q2 or Q3.
When the function “Temperature-dependent fan control“ is activated (can be
selected with DIP switch no. 1), the fan is switched on / off depending on the
temperature, that is, together with the valve.
It is switched off by
• leaving the heating or cooling sequence, provided the function “Temperature-
dependent fan control “ is activated, or
• manually changing to OFF ' ', or
• activating an external operating mode changeover switch, provided plant conditions
do not call for energy saving, or
• turning the controller’s power supply off
Operatingmodes
The following operating modes are available:
Normal operation Heating or cooling mode with automatic changeover and with manually selected fan
speed III, II or I. In normal operation, the controller maintains the adjusted setpoint. In
operating mode selector position , the controller is switched off.
Energy saving mode In energy saving mode, the setpoint of heating is 16 °C and the setpoint of cooling
28 °C, independent of the position of the setpoint knob. This operating mode will be
activated when input D1 for operating mode changeover is active and DIP switch
no. 2 is set to ON.
Avoiding damage
resulting from mois-
ture
To avoid damage due to moisture in very warm or humid climatic zones resulting from
lack of air circulation in energy saving mode, DIP switch no. 1 must be set to OFF. With
this configuration, the fan is energy saving mode operates at the speed manually se-
lected or, if the operating mode selector is set to OFF , at speed I.
Operating mode
changeover switch
A changeover switch can be connected to status input D1-GND. When the switch
closes its contact (caused by an open window, for instance), the operating mode will
change from normal operation to energy saving mode (provided DIP switch no. 2 is set
to ON), or from normal operation to standby (provided DIP switch no. 2 is set to OFF).
Ordering
When ordering, please give name and type reference.
The QAH11 temperature sensor (can be used as a changeover sensor), the change-
over mounting kit and the valves are to be ordered as separate items.
Equipment combinations
Type of unit Type reference Data sheet
Temperature sensor QAH11.1 1840
Changeover mounting kit ARG86.3 1840
Motoric actuator (radiator valve) SSA31... 4893
Motoric actuator (small valve 2,5 mm) SSP31… 4864
Motoric actuator (small valve 5,5 mm) SSB31... 4891
Motoric actuator (valve 5,5 mm) SSC31… 4895
Motoric actuator (valve 5,5 mm) SQS35… 4573
3/8
Siemens Building Technologies Room temperature controller CE1N3026en
HVAC Products 12.06.2003

Produktspezifikationen

Marke: Siemens
Kategorie: Thermostat
Modell: RCC60.1

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