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Display, Operation

Multifunction Pushbuttons

Pushbuttons with room temperature controllers

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Siemens ET G1 · 10/2008

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Technical specifications

Type Description

UP 231/3 UP 231/3 pushbuttons

• Vertical operation

• Two wide inner rocker buttons

• Function can be user-assigned: switching OVER, switching

ON/OFF, switching ON/OFF and dimming, shutter/blind, value

transmission, store and call up scenes of up to four 1-bit scenes

in conjunction with scene module

• Short and long button press for ON/OFF/OVER, BRIGHTER/

DARKER for dimming, and UP/DOWN and adjustment of slats

for shutter/blind control

• Operation/status indication over one LED per rocker button

• Integrated room temperature sensors and controllers for

heating only, cooling only or combined heating/cooling

• Control over an algorithm for adaptive control and/or a two-point

algorithm

• With monitoring of room temperature over a room temperature

sensor integrated in the controller and an external room temper-

ature sensor connected to the KNX, and with adjustable weighting

between the measured indoor and outdoor temperature

• Two narrow outer rocker buttons for setpoint offsetting in comfort

mode and one for switching between comfort and standby

mode

• Operating modes that can be switched over KNX: comfort

mode, standby mode, night mode, frost or heat protection

mode, with adjustable offset of the room temperature setpoint

for comfort mode

• Adjustable dead zone, selectable either symmetric to the

setpoint for comfort mode or between the heating and cooling

setpoint for comfort mode

• Selectable sequence control for heating and cooling mode

(required e.g. for the combination of floor and radiator heating)

•

Output of the control variable(s) either as ON/OFF switch command

or as positioning command in the range 0 % ... 100 %, with

LEDs for the indication of the current operating mode and

setpoint offsetting

• For plugging onto a UP 114 bus coupling unit

• Dimensions (H x W x D): 65 x 65 x 15 mm

UP 252H UP 252H multifunction controllers

• For direct control of the valves and the fan of the fan coil or a

split unit

•

Preselection of the required control function of directly connected

heaters/refrigerators using the ETS

• Integrated room temperature sensors

• P or PI control of the room temperature for heating, cooling or

heating and cooling mode

• For adjustment of comfort, pre-comfort, night and protection

modes over the bus

• Adjustment of temperature setpoint for comfort mode

• Adjustment of temperature setpoints over the ETS for all other

operating modes

• Fixed dead zone (1K) between heating and cooling in comfort

mode

• Presence pushbutton to locally switch over between comfort

and pre-comfort and for extending comfort mode through

activation of the night mode

• Pulse-width modulated control signal output

• Eight operator buttons for the manual adjustment of the comfort

temperature setpoint, for the selection of the operating mode

and ventilator speed step and the ON/OFF switching of a load

(e.g. room lighting)

• A red status LED per operator button

• An LCD with three digits for the representation of the current

setpoint or room temperature

• A binary input for the direct connection of a floating window

contact

•

A binary input for 12 V DC for the direct connection of a presence

detector

• An analog input for the optional connection of a temperature

sensor mounted in the intake air flow of a ventilator convector

(NTC sensor, 10 kOhm at 25 °C),

• Five binary outputs 24 V AC (relay contacts for 2 A, p.f. = 1) for

the control of electrothermal valve actuators, for the switching

of ventilator speed steps, etc. depending on the configured

application.

• Integrated bus coupling units

• Bus connection via bus terminal

• Integrated power supply for 24 V AC

• Double hanging bracket for mounting on two combined hollow-

wall or flush-mounting boxes with at least

∅

58 mm and at least

40 mm depth or an equivalent double flush mounting box

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