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Once the parameter has been selected and the SET is on, it means
that the parameter can be programmed even on the first level
("visible”).
If the LED is off it means that the parameter can only be
programmed on this level (i.e. “hidden”).
To change the visibility of the parameter, press the key U: the led
SET will change status, indicating the accessibility level of the
parameter (on = parameter “visible”; off = parameter “hidden”).
The access procedure for “hidden” parameters allows the “PASS”
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 2 different regulation Set points to be pre-
set (

“SP 1”

and

“SP 2”

) and then to choose which one to make active.

This function can be used if it is necessary to switch two different
function temperatures (e.g. day and night or positive and negative etc).
The active set point can be selected:
- Using the parameter “SPAt”
- using the key U if the parameter "USrb" = 3.
- Using the key DOWN/AUX if the parameter "Fbd" = 3.
- Using the digital input if the parameter. “diF” = 8 (see par. 4.10, 4.12)
The Set points "SP1" and "SP2" can be set with a value between
the programmed value in parameter.

“SPLL”

and the programmed

value in parameter

“SPHL”.

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

Once powered the instrument 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 green SET 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 "USrb" = 4.
- Using the key DOWN/AUX if the parameter "Fbd" = 4.
- Using the digital input if the parameter “diF” = 10 (see par. 4.10, 4.12)

2.7 - TIME SETTING

When the instrument has an internal clock it is necessary to
programme it on the current time by using the parameter

“StCL”

contained in the group “

]

CLO

“.

The instrument has an internal quartz for the clock, however, should
the clock become inaccurate (especially over a long period) it can
be adjusted daily using the parameter

“CLOF”

contained in the

same group.
The working of the clock is guaranteed by an internal condenser for
a period of about 4 hours without any power to the instrument.
If the instrument should remain without power for a long period,
remember to check and if necessary re-programme the exact time.

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 EN61010-1 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, in case 33 x 75 mm, is designed for flush-in panel
mounting. Make a hole 29 x 71 mm and insert the instrument, fixing
it with the provided special bracket.
We recommend that the gasket is mounted in order to obtain the
front protection degree as declared.
Avoid placing the instrument 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 instrument 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 instrument 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
(e.g. 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.
To supply the instrument it is necessary to use the transformer
TCTR (or with equivalent features) or a filtered DC power supply
mounting inside the plant with connection cables longer no more
than 30 m.
It’s racommended to use only one transformer for each instrument
because there is no insulation between supply and input.
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.