OSAKA
- USER MANUAL - B4U - v2 - PAG. 4
2.5 -
RESET THE FACTORY SETTINGS OF THE PARAMETERS
The B4U allows you to reset the parameters to the factory default
values.
To return to the factory values or default values of the parameters, it
is enough to activate the password protection and once activated
when the display reads "rP" enter the password -48
.
Once the password has been confirmed with the LIGHT key, the
display will show "---" for 2 seconds when the equipment resets the
parameters, does a little test and sets all the parameters to default
values.
2.6 - KEYBOARD LOCK FUNCTION
The B4U can fully lock the keyboard.
Such a function is useful when the controller is exposed to the public
and you want to prevent tampering
.
The key lock function can be activated by programming the “Lo”
parameter to any value other than oF.
The value configured in the "Lo" parameter is t
ime that if the keyboard
remains untouched, the keyboard is fully locked automatically
.
Therefore if we do not press any key during the time
"It"
the B4U will
automatically lock out normal keyboard operation.
When you press any key when the keypad is locked, the display will
show "Ln" to indicate that the lock is active.
To unlock the keyboard, we must press the LIGHT key for 8 seconds,
after that time the display will show "LF" and all the key functions will
be operational again.
2.7 - DISPLAY OF THE VARIABLES
The display normally shows the variable configured in the "dS"
parameter, but it is possible to show all the measurement and
operating variables by simultaneously pressing the ON / OFF +
DOWN keys for 5 seconds. The screen will alternately show the
initials that identify the first variable and its value.
With the UP or DOWN keys, we can see all the variables:
"P1" - Pr1 probe measurement
"P2" - Pr2 probe measurement
"P3" - Pr3 probe measurement
"Lt" - Minimum stored temperature Pr1
"Ht" - Maximum stored Pr1 temperature.
If the function related to the power supply voltage alarms is enabled
(parameter "LU" or "HU" different from oF), the variable P5 will also
appear.
The maximum values Lt and Ht will not be saved when the power
supply fails and can be reset by pressing the ON / OFF key for 3
seconds during the maximum display. After 3 seconds, the display
will show "---" for an instant to indicate that the cancellation has
occurred and will assume the maximum temperature measured at
that instant.
To exit the variables display mode, we will not press any of the 4 keys
for approximately 10 seconds.
3 - WARNINGS FOR USE
3.1 - PERMITTED USE
The B4U has been designed as a measuring and regulating device
in accordance with EN 60730-1 for operation at altitudes up to
2000m.
The use of the B4U in applications not expressly provided for in the
aforementioned standard must include all appropriate protection
measures.
The B4U must be adequately protected and out of the reach of
liquids, dust, grease and dirt. It must be accessible only with the use
of a secure tool or system (except the front one).
The B4U CANNOT be used in environments with a dangerous
atmosphere (flammable or explosive) without adequate
protection.
If used with the NTC probe that is supplied together with
the B4U, it will comply with the EN 13485 standard
("Thermometers to measure the temperature of air and products for
the transport, storage and distribution of refrigerated, frozen and
frozen food products") with the following designation: [air, S, A, 2, -
50 ° C .. + 90 ° C].
Remember that the B4U, when in operation, must be periodically
checked by the end user in accordance with the EN 13486 standard.
It is recalled that the installer must ensure that the standard regarding
electromagnetic compatibility is respected after the implementation
in the installation of the equipment, possibly using suitable filters.
.
In case of failure or malfunction of the B4U that could create
dangerous situations or damage to people, things, animals or product
(defrosting of food or changes in its ideal state), it is recalled that the
installation should be equipped with additional electronic or
electromechanical devices to guarantee the security.
4 - INSTALLATION WARNINGS
4.1 - MECHANICAL ASSEMBLY
The POWER UNIT B4U module is designed for installation with fixing
by 2 screws.
The DISPLAY B4U panel, with dimensions of 96 x 50 mm, is
designed to be paneled.
A 90 x 44 mm hole must be made and the DISPLAY B4U must be
inserted, fixing it with the special supports provided.
Avoid placing the B4U module in places exposed to high humidity or
dirt that may cause condensation or the introduction of conductive
parts or substances.
Make sure the B4U has adequate ventilation and avoid installation in
containers where other devices are installed that can cause the
devices to operate outside of the set temperature limits.
Install the devices as far as possible from sources that can generate
electromagnetic disturbances such as motors, contactors, relays,
solenoid valves, etc.
