Ascon tecnologic TLB 55 Operating Instruction Download

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P.A.: The access procedure for “hidden” parameters allows the
“PP” parameter to be checked and changed, and is useful therefore
if the password set has been forgotten.

2.5 - ACTIVE SET POINT SELECTION

The instrument allows up to 4 different regulation Set points to be
pre-set (

“SP”

“S2”

“S3”

“S4”

) and then to choose which one to

make active.
This function can be used if it is necessary to switch different
function temperatures (e.g. day and night or positive and negative
etc).
The active set point can be selected:
- Using the parameter “SA”
- using the key U if the parameter "UF" = 3.
- Using the key DOWN/AUX if the parameter "Fb" = 3.
- Using the digital input 1 if the parameter. “FI” = 8 or 14 or the
digital input 2 if the parameter “FI” = 12 or 13 (between “SP” and
“S2”).
- Using the digital inputs 1and 2 if the parameter. “FI” = 11
(between “SP”, “S2”, “S3” and “S4”).
The Set points can be set with a value between the programmed
value in parameter.

“LS”

and the programmed value in parameter

“HS”.

Note:

in the examples that follow, the Set point is generally

indicated as "SP", how when operating the instrument will work
according to the Set point selected as active.

2.6 - ON / STAND-BY

FUNCTION

The instrument, once powered up, can assume 2 different
conditions:
- ON : means that the controller uses the control functions.
- STAND-BY : means that the controller does not use any control
function and the display is turned off except for the  Stand-by led.
If there is no power, and then power returns, the system always
sets itself in the condition it was in before the  black-out.
The ON/Stand-by function can be selected:
- Using the key U if the parameter "UF" = 4.
- Using the key DOWN/AUX if the parameter "Fb" = 4.
- using the digital input if the parameter  “FI” = 10

2.7 - KEYBOARD LOCK FUNCTION

On the instrument it’s possibile to lock completely the keyboard.
This function is particularly useful when the regulator is reachable
by the users and it’s desired to avoid any modification.
To activate the keyboard lock it’s enough program the par.

“Lo”

a different value to oF.
The value program to this parameter it is the time of inactivity of the
keys afterwhich the keyboard will be locked.
Insofar not pressing any key for the time "Lo" the instrument
automatically disable the normal functions of the keys.
When the keyboard is lock, if any of the key is pushed, on the
display will appear

“Ln”

to indicate the active lock.

To unlock the keyboard it’s enough to contemporarily push key P
and UP and keep them pushed for 5 sec., afterwhich the label

“LF”

will appear on the display and all the keys functions will be availab-
le again .

3 - INFORMATION ON INSTALLATION AND USE

3.1 - PERMITTED USE

The instrument has been projected and
manufactured as a measuring and control device to
be used according to EN60730-1 for the altitudes
operation until 2000 ms.

The use of the instrument

for applications not expressly permitted by the

above mentioned rule must adopt all the necessary protective
measures. The instrument CANNOT be used in dangerous
environments (flammable or explosive) without adequate
protection. The installer must ensure that EMC rules are respected,
also after the instrument installation, if necessary using proper
filters. Whenever a failure or a malfunction of the device may cause
dangerous situations for persons, thing or animals, please

remember that the plant has to be equipped with additional devices
which will guarantee safety.

3.2 - MECHANICAL MOUNTING

The instrument TLB55, in case 135 x 97 mm, is designed for
flush-in panel mounting. Make a hole 124 x 85 mm and insert the
instrument, fixing it with the provided special brackets.
We recommend that the gasket is mounted in order to obtain the
front protection degree as declared. The BSL unit is designed for
mounting inside enclosure by 2 screws. Avoid placing the BSL unit
and internal side of TLB55 in environments with very high humidity
levels or dirt that may create condensation or introduction of
conductive substances into the instrument. Ensure adequate
ventilation to the instruments and avoid installation in containers
that house devices which may overheat or which may cause the
instrument to function at a higher temperature than the one
permitted and declared. Connect the instruments as far away as
possible from sources of electromagnetic disturbances such as
motors, power relays, relays, solenoid valves, etc.

3.3 - ELECTRICAL CONNECTION

Carry out the electrical wiring by connecting only one wire to each
terminal, according to the following diagram, checking that the
power supply is the same as that indicated on the instrument and
that the load current absorption is no higher than the maximum
electricity current permitted. As the instrument is built-in equipment
with permanent connection inside housing, it is not equipped with
either switches or internal devices to protect against overload of
current: the installation will include an overload protection and a
two-phase circuit-breaker, placed as near as possible to the
instrument, and located in a position that can easily be reached by
the user and marked as instrument disconnecting device which
interrupts the power supply to the equipment. It is also
recommended that the supply of all the electrical circuits connected
to the instrument must be protect properly, using devices (ex.
fuses) proportionate to the circulating currents. It is strongly
recommended that cables with proper insulation, according to the
working voltages and temperatures, be used. Furthermore, the
input cable of the probe has to be kept separate from line voltage
wiring. If the input cable of the probe is screened, it has to be
connected to the ground with only one side. We recommend that a
check should be made that the parameters are those desired and
that the application functions correctly before connecting the
outputs to the actuators so as to avoid malfunctioning that may
cause irregularities in the plant that could cause damage to people,
things or animals.