Loading ...
Loading ...
Loading ...
User Instructions Low Temperature Freezers Model UNI/LT
10
DIGITAL INPUTS POLARITY
The digital input polarity depends on the
“i1P” parameter.
i1P=CL: the input is activated by closing the
contact.
i1P=OP: the input is activated by opening
the contact
INSTALLATION AND MOUNTING
Instrument XR30C shall be mounted on
vertical panel, in a 29x71 mm hole, and fixed
using the special bracket supplied.
To obtain an IP65 protection grade use the
front panel rubber gasket (mod. RG-C) as
shown in figure.
The temperature range allowed for correct
operation is 0÷60 °C. Avoid places subject to
strong vibrations, corrosive gases, excessive
dirt or humidity. The same recommenda-
tions apply to probes. Let air circulate by the
cooling holes.
ELECTRICAL CONNECTIONS
The instrument is provided with screw
terminal block to connect cables with a
cross section up to 2,5 mm2. Before con-
necting 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.
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. Place the defrost termination
probe among the evaporator fins in the
coldest place, where most ice is formed,
far from heaters or from the warmest place
during defrost, to prevent premature defrost
termination.
HOW TO USE THE HOT KEY
HOW TO PROGRAM A HOT KEY FROM THE
INSTRUMENT (UPLOAD)
1. Program one controller with the front
keypad.
2. When the controller is ON, insert the “Hot
key” and push o key; the “uPL” message
appears followed a by flashing “End”
3. Push “SET” key and the End will stop flash
ing.
4. Turn OFF the instrument remove the “Hot
Key”, then turn it ON again.
NOTE: the “Err” message is displayed for
failed programming. In this case push again
key if you want to restart the upload again
or remove the “Hot key” to abort the opera-
tion.
HOW TO PROGRAM AN INSTRUMENT USING
A HOT KEY (DOWNLOAD)
1. Turn OFF the instrument.
2. Insert a programmed “Hot Key” into the
5 PIN receptacle and then turn the Con
troller ON.
3. Automatically the parameter list of the
“Hot Key” is downloaded into the
Controller memory, the “doL” message is
blinking followed a by flashing “End”.
4. After 10 seconds the instrument will restart
working with the new parameters.
5. Remove the “Hot Key”..
BRACKET
(PUSH TO RELEASE)
PANEL
Loading ...
Loading ...
Loading ...