Fluidwell E115-P, Руководство пользователя

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E115-P User Manual
FW_E115-P_M_v0301-01_EN Page 11
The Key lock symbol appears at the top of the display to indicate that the keys are locked or
disabled:
Fig. 5:
Key lock symbol
To unlock the optical keys, an unlock sequence needs to be performed. Start the unlock sequence
by activating any of the optical keys. The display will now prompt the operator to activate each
optical key in sequence: PROG > SELECT > CLEAR.
When successful, the Key lock symbol
disappears and the optical keys can be used to control
the unit. To lock the optical keys again, wait for 30 seconds or push the PROG and CLEAR keys
simultaneously for 3 seconds.
(Temporarily) Disabled optical keys
To save battery lifetime and to prevent unwanted access or operation, the optical keys can be
disabled completely. Additionally, after using the mechanical pushbuttons, the optical keys are
automatically disabled for 30 seconds.
When the optical keys are disabled, the Key lock symbol
is shown continuously and the display
does not prompt for the unlock sequence. See
Section 5.2: Operating the Main Electronics Module
(MEM) [»15]
for more information.
4.2.3 BACKLIGHT
The E115 is equipped with a backlight to illuminate the display for improved readability. Depending
on the type of supply the backlight functions as follows:
● When the unit is powered by an external power supply, the backlight is on continuously and its
intensity can be adjusted in the configuration settings.
● When the unit is battery powered, the backlight remains off until a key is pressed or the unlock
sequence is finished. To safe battery life, the backlight operates at a fixed minimum intensity
and turns off again after 3 seconds of inactivity.
● When the unit is used in a loop powered application, the backlight will not come on because only
limited power is available.
4.3 OPERATOR FUNCTIONS
Before operating the unit, check that the symbol is not shown on the display.
Otherwise, unlock the optical keys as described in
Section 4.2.2: Optical keys [»10]
.
Functions of the keys in operator mode
The following functions are available:
PROG -key
This key is used to program and save new values or settings.
The PROG-key is also used to gain access to SETUP mode, see
Section 5:
Configuration [»15]
.
SELECT -key
This key is used to select the displayed information, like accumulated total and
flowrate.