24
Electrical connection
The instruments are provided with screw terminal block to connect cables with a cross section up to 2,5
mm2 for the digital and analogue inputs. Relays and power supply have a Fast on connection (6,3mm).
Heat resistant cables have to be used. Before connecting cables make sure the power supply complies
with the instrument’s requirements. Separate the probe cables from the power supply cables, from the
outputs and the power connections. Do not exceed the maximum current allowed on each relay, in case
of heavier loads use a suitable external relay.
N.B.
Maximum current allowed for all the loads is 20A.
Probe connection
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place the thermostat probe away from air streams to correctly
measure the average room temperature.
TTL Serial line
The TTL connector allows, by means of the external module TTL/RS485, to connect the unit to a
network line
ModBUS-RTU
compatible as the DIXEL monitoring system XJ500 (Version 3.0).
The same TTL connector is used to upload and download the parameter list of
the “
HOT BUTTON
”.
Use of the programming “HOT BUTTON”
The Wing units can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to
the
“Hot Button”
and vice-versa.
Download (from the “HOT BUTTON” to the instrument)
1. Turn OFF the instrument by means of the ON/OFF button, remove the TTL serial cable if
present, insert the
“Hot Button”
and then turn the Wing ON.
2. Automatically the parameter list of the
“Hot Button”
is downloaded into the Wing memory,
the “
DoL
” message is blinking. After 10 seconds the instrument will restart working with the
new parameters.
3. Turn OFF the instrument remove the
“Hot Button”,
plug in the TTL serial cable, then turn it
ON again. At the end of the data transfer phase the instrument displays the following
messages: “
end
“ for right programming. The instrument starts regularly with the new
programming. “
err
” for failed programming. In this case turn the unit off and then on if you
want to restart the download again or remove the “
Hot button
” to abort the operation.
Upload (from the “HOT BUTTON” to the instrument)
1. Turn OFF the instrument by means of the ON/OFF button and remove the TTL serial cable
if present; then turn it ON again.
2. When the Wing
unit is ON, insert the “
Hot button
” and push o button; the
"uPL"
message
appears.
3.
Push “
SET”
button to start the UPLOAD; the “
uPL
” message is blinking.
4. Turn OFF the instrument remove the
“Hot Button”,
plug in the TTL serial cable, then turn it
