Siemens UP 237K, UP 254K Technical Product Information
GAMMA instabus
Technical Product - Information
February 2014
Temperature Controller UP 237K 5WG1 237-2KB_1
UP 254K 5WG1 254-2KB_3
Product and Application Description
The room temperature controller UP 237K and UP 252K
are available in the following colors, matching the design
of the wall switch design line DELTA i-system or DELTA
style:
DELTA i-system
Temperature Controller UP 237K
titanium white 5WG1 237-2KB11
aluminum metallic 5WG1 237-2KB31
DELTA style
Temperature Controller UP 254K
titanium white/
metallic silver 5WG1 254-2KB13
platinum metallic 5WG1 254-2KB43
The room temperature controls UP 237K and UP 254K
are especially designed for usage in rooms which are
heated and/or cooled and whose temperatures are controlled depending on up to four room operating modes
(comfort mode, pre-comfort mode, energy-savings mode
and protection mode). As required, a parameter can be
used to set that the controller does not consider all four
operating modes but rather only three (comfort mode,
energy-savings mode and protection mode). The room
temperature control can be used a a two-point control
(thermostat) or as a continuous control (P or PI control).
These Room temperature controller can only function
together with the necessary Bus Transceiver Module
(BTM) UP 117 and the associated application program.
LED displays
Along with a button and a rotary knob on its upper edge,
the clear and self-explanatory user interface contains 5
green illuminating light emitting diodes (LED) to display
whether "manual operation" is activated as well as the
current room operating mode and two red illuminating
LEDs and 2 duo-color illuminating LEDs on the left edge.
The duo-color LEDs are used to display whether the
heating valve (LED is lit in red) or the cooling valve (LED
is lit in yellow) is open. If these LEDs are not illuminated,
then both valves are closed.
A red LED is used to display whether a window is open
or whether a dew point alarm is pending.
Button
Briefly
pressing the button on the control causes switching in automatic mode (the LED for the display of manual
operation is not lit) each time between "comfort mode"
and "pre-comfort mode" (with four operating modes) or
between "comfort mode" and "energy-savings mode"
(with three operating modes). Moreover briefly
pressing
the button during active energy-savings or protection
mode starts a "comfort prolongation". Pressing and holding down (e.g.> 1 s, but < 3 s) the button during continuous comfort prolongation can cause this to end at any
time and jump back to the room operating mode before
the start of the comfort prolongation.
Holding down the button for a longer time (> 3 s) can
cause switching from automatic to manual operation. In
manual operation every room operating mode can be
permanently activated and not changed by a bus telegram. If manual operation is activated, then each time
the button is pressed briefly the light display of the current operating mode wanders gradually from the current
position to the next operating mode symbol until the extreme right or left position is reached and from there
back again. If during a waiting time of around 3 seconds
no
renewed brief
pressing of the button occurs, then the
displayed room operating mode will be activated and this
reported by the Bus. If the button in "manual operation"
is pressed for a very long (> 3 s) time, then the system
will be switched to automatic operation and at the same
time to comfort mode. If a presence detector is installed,
then a brief
pressing of the button in automatic operation
is ignored.
Note:
Via a parameter setting the switching of room control
modes and an activation of on-site comfort prolongation
can be locked by the button.
Rotary knob
The control is supplied with two rotary knobs: one inserted in the control for shifting the basic target value to a
higher or lower value and a second for directly setting
the target value in the range of 16 to 26 °C.
If instead of shifting the target value with the adjustable
shifting range, direct target value setting in degrees Celsius is desired, then the inserted rotary knob should be
exchanged with the delivered rotary knob and the parameter "target value setting" should be switched t o "directly in °C" in the "Functions / objects" parameter window.
Note:
Via a parameter setting the setting of setpoint value respectively setpoint value shifting can be locked by the
rotary control.
Siemens AG UP 237K, UP 254K, 5 pages Technical-Manual
Infrastructure & Cities Sector, Building Technologies
Control Products and Systems ã Siemens AG 2014 Update: http://www.siemens.com/gamm a
P. O. Box 10 09 53, D-93009 Regensburg Subject to change without further notice.
2.8.2.8/1
GAMMA instabus
Technical Product-Information
February 2014
Temperature Controller UP 237K 5WG1 237-2KB_1
UP 254K 5WG1 254-2KB_3
Commissioning
For commissioning a control with the help of ETS (Engineering Tool Software), the control together with the
suitable DELTA frame must first be inserted into a Bus
Transceiver Module (BTM) UP 117 which serves to supply power to the control and to transmit data via the KNX
Bus.
After removing the rotary knob for target value shifting,
the recess for the commissioning button and the commissioning LED of the control are visible.
Note:
The bus transceiver module UP 117 and the associated DELTA frame are not supplied and must be ordered separately.
With the help of ETS, the application program can be selected, the specific parameter and addresses assigned
and transferred into the room temperature controls UP
237K and UP 254K.
Application program
The "0705 CO Room Temperature Control H+K 803002" application program supports the following functions:
· Switching between automatic / manual operation and
switching the room operating mode with the button,
· Target value shifting or target value setting in °C with
the rotary knob,
· Status display with LEDs:
- Displays (green) for manual operation and the cur-
rent room operating mode (comfort, pre-comfort,
energy-savings and protection mode),
- Displays (red/yellow), whether the heating or cooling
valve is open,
- Displays (red) for dew point alarm and open window.
· Room temperature control, adjustable as:
- heating only, cooling only, heating and cooling,
each selectable as
- heating with two-point control,
- heating with PI control,
- heating with PI control and sequence control
(e.g. with floor and radiator heating),
- cooling with two-point control,
- cooling with PI control,
- cooling with PI control and sequence control.
(e.g. with cooling ceiling and supply air cooler).
The following partial functions are part of room temperature control:
- Room temperature measurement using the internal
temperature sensor with Offset setting,
- Room temperature measurement using an external
temperature sensor with Offset setting,
- Computation of current room temperature actual
value (internal and external sensors weighted),
- With target value shifting: Basic target value as-
signment via parameter setting and/or via Bus,
- With target value shifting: Computation of current
room temperature target value from basic target value and shifting,
- time-restricted removal of night sinking or the pro-
tection mode (comfort prolongation),
- with presence detection via the Bus, switching to the
"comfort" operating mode occurs,
- Dew point mode can be activated via the Bus,
- Evaluation of the window conditions via the Bus,
- Frost protection / heat protection are reported via
the Bus,
- PI control for heating / cooling with constant regulat-
ing variable-output (in %) or toggling regulating variables-output (on / off).
- Separated or joint regulating variable output for
heating and cooling,
- Separated regulating variable output for basic level
and auxiliary level for 2-level heating or cooling,
- Switching the desired effect and scaling the regulat-
ing variable for heating/cooling is possible,
- Maximal and minimal regulating variable for heat-
ing/cooling possible,
- Operating condition (control status) can be read out
via the Bus,
Technical Data
Power supply
· via the flush-mounted bus transceiver module UP 117
Operating elements
· 1 rotary button for manual adjustment of the setpoint
(control range and type of adjustment dependent on
the parameter setting and type of rotary button)
· 1 button for toggling of the room operating mode and
vice versa
Display elements
· 5 green LED`s for the current operating mode (comfort , pre-comfort, energy-saving, protection mode) and
for manual mode
· 2 red LED`s for dew point alarm and open window
· 2 red/yellow LED`s for Heating / cooling mode
Temperature measurement
· Measuring range: 0 ... + 40 °C
· Resolution: 0.08 K
· Accuracy of the sensor temperature:
± 1.0 K under reference conditions,
± 2.0 K under ambient conditions and in measuring
range
Connections
· 10-pole plug-in connector for connection with the bus
transceiver module UP 117
Technical-Manual UP 237K, UP 254K, 5 pages Siemens AG
Update: http://www.siemens.com/gamm a ã Siemens AG 2014 Control Products and Systems
Subject to change without further notice. P. O. Box 10 09 53, D-93009 Regensburg
Infrastructure & Cities Sector, Building Technologies
2.8.2.8/2
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