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T7270B2009 WALL MODULE
NOTE: This design solution was chosen to avoid confusion
stemming from the fact that the T7270B2009 is not
capable of receiving (and therefore displaying) infor-
mation from the W7070A2000 about the actual
occupancy state currently in effect.
Cycling with the UP button results in the following sequence
of displays: "crescent moon", then nothing, then "half-sun",
then "full sun". Cycling with the DOWN button reverses the
sequence.
NOTE: The OCCUPANCY function can be disabled (see
section "PA: Disable/Enable OCCUPANCY
Function" on page 6). When cycling with the "F"
button, this function and the corresponding display in
the LCD sequence will then be unavailable to the
user.
FAN Function
If the FAN function is selected (by pressing the "F" button
three times), the corresponding function symbol – a stylized
fan ( ) – will appear in the LCD, accompanied by either
•
the "AUTO" symbol, meaning that the user does not wish
to override the fan setting automatically established by the
controller, or
•
the "MANU" symbol, meaning that the user wishes to
override the fan setting automatically established by the
controller, together with the numeral "0", "1", "2", or "3"
(representing the fanspeeds).
Cycling with the UP button results in the following sequence
of displays: "AUTO", then "MANU 0", then "MANU 1", then
"MANU 2", then "MANU 3". Cycling with the DOWN button
reverses the sequence.
After the selection has been completed, the "AUTO" / "MANU"
symbol will become part of the default display.
NOTE: The FAN function can be configured so as to be
disabled whenever the user has manually forced the
controller into the "unoccupied" state and parameter
P8 (see page 6) has been set to 3 or 4. When
cycling with the "F" button, the FAN function and the
corresponding display in the LCD sequence will then
be unavailable to the user. If the FAN function is not
available, check parameter P8 to see if it has been
disabled and/or change the occupancy state.
NOTE: The FAN function can be configured for "no fan",
"ON/OFF fan", "2-speed fan" or "3-speed fan" via
parameter P3 (see section "P3: Fan" on page 5). If
the fan does not work as expected, check the
settings of parameter P3.
Default Display and Default Function
If there is no user action for more than 4 sec, the
T7270B2009 will automatically revert to the default display
and the default function.
Default Display
In the default display (see for example Fig. 2), the current
room temperature (in °C or °F, as desired) with a resolution of
one-tenth of a degree is shown in the LCD. Further, the
temperature symbol – a stylized thermometer (" ") – is also
shown.
EN1B-0389GE51 R1207A
Default Function
The LIGHT function is the default function. Thus, the user can
adjust the setting (i.e. dim, brighten, or turn a light group
ON/OFF) simply by using the UP and DOWN buttons, and
without having to cycle through the other function symbols.
Power-Up / Teach Commands
After power-up, an LCD test will be carried out (i.e. all LCD
segments will be activated for approx. 1 sec).
Fig. 3. LCD test after power-up
After that, two teach commands will be triggered. Please
refer to W7070A2000 Receiver – System Engineering
(Product Literature No.: EN0B-0286GE51) on how to perform
a teach-in. A special LCD sequence "t 1", then "t 2" will be
shown while the given teach command is being transmitted.
Checking the Software Version and
Transmitting Teach Commands
To check the version of the software currently loaded in the
T7270B2009, the user must press the "F" button and the
DOWN button simultaneously for approx. 5 sec.
After the LCD test is then automatically performed, the name
of the current software version in the T7270B2009 (e.g.
"1.03") will appear in the LCD and a special LCD sequence
"t 1", then "t 2" will be shown while the given teach command
is being transmitted.
4
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