Buhler TC-MIDI + X2 Mode D'emploi page 15

TC-MIDI (+) X2
Description of signal outputs
Function / Description
contact type
Regard- internal the following
ing S2) changeover device statuses
contact: can be indic-
max. ated via two
250 V AC / switching out-
150 V DC, 2 A, puts:
50 VA
Regard- 4-20 mA Signalling of
ing S3) analogue actual temper-
output ature (please
(R <500 Ω) use shielded
Load
cables)
5 Operation and control
NOTICE
The device must not be operated beyond its specifications.
After switching on the cooler the block temperature will be
displayed. The display will flash until the block temperature
has reached the preset target value (± adjustable alarm
range). The status contact is in the Alarm position.
Once the target temperature range has been reached, the
temperature will continuously be displayed and the status
contact switches over.
If the display flashes during operation or an error message ap-
pears, please refer to bullet "Troubleshooting".
Please refer to the data sheet for performance data and max-
imum ratings.
BX440024 ◦ 12/2020
Contact between 3 and
2 closed (alarm)
• No mains voltage
and/or actual tem-
perature outside
the alarm
thresholds
Contact between 3 and
1 closed (ok)
• Mains voltage at-
tached + actual
temperature
within the alarm
thresholds
With moisture detector
option
Contact between 3 and
2 closed (alarm)
• The moisture de-
tector registers re-
sidual humidity in
the sample gas or
cable break: Error
message
Contact between 1 and
3 closed (ok)
• no residual mois-
ture in measuring
gas / no cable
break
With temperature sig-
nal option
T = -20 °C ≙ (-4 °F) ->
Cooler
4 mA/ 2 V
T = 5 °C ≙ (41 °F) ->
Cooler
9 mA/ 4,5 V
T = 60 °C ≙ (140 °F) -
Cooler
> 20 mA/ 10 V
5.1 Use of menu functions
Brief description of the operating principle:
The unit is operated using 5 keys. Their functions are:
Button Section
Display • Switches from the measurement dis-
play to the main menu
or
Menu • Selects the menu item displayed
OK
Enter • Applies an edited value or a selection
Display • temporarily switches to the alternative
measurement display (if option in-
stalled)
Menu • Back
Enter • Increase value or browse selection
• Note:
▪ Press button 1 x = changes para-
meter / value by one;
▪ Hold button = fast mode (numerical
values only)
▪ Display flashes: modified para-
meter/value
▪ Steady display: original display/
value
Display • temporarily switches to the alternative
measurement display (if option in-
stalled)
Menu • Next
Enter • Reduce value or browse selection
Menu • Move one level up
ESC
Enter • Return to menu
Changes will not be saved!
• Sets a menu to favourite.
F
(Note: The favourite menu will also be
or
activated with the menu locked!)
Func
5.1.1 Lock Menu
Some menus can be locked to prevent inadvertently changing
the settings of the unit. This requires setting a code. For in-
formation on setting up or disabling the menu lock please
refer to "Global Settings" (toP) under menu item toP > Loc.
The menu lock is not enabled at the time of delivery, all menu
items can be accessed.
With the menu locked, only the following menu items will be
visible without entering the correct code:
Menu item Explanation
toP > unit Temperature unit selection (°C or °F).
F or Func. Accessing the Favourites menu
NOTICE! This menu may be one that is nor-
mally locked.
Functions
Bühler Technologies GmbH 15