GAMMA
instabus
Technical Product-Information
February 2014
Temperature Controller
UP 237K
5WG1 237-2KB_1
UP 254K
5WG1 254-2KB_3
Technical-Manual
UP 237K, UP 254K, 5 pages
Siemens AG
Infrastructure & Cities Sector, Building Technologies
Update: http://www.siemens.com/gamma
ã
Siemens AG 2014
Control Products and Systems
Subject to change without further notice.
P. O. Box 10 09 53, D-93009 Regensburg
2.8.2.8/2
Commissioning
For commissioning a control with the help of ETS (Engi-
neering 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 sup-
ply 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 com-
missioning LED of the control are visible.
Note: The bus transceiver module UP 117 and the asso-
ciated DELTA frame are not supplied and must be or-
dered separately.
With the help of ETS, the application program can be se-
lected, 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 tempera-
ture 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 val-
ue 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 vari-
ables-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 (com-
fort, 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
