Important; Connection; Power On - Carel 2N Manuel D'utilisation

Important:

1. Avoid mounting the instrument in rooms with the following characteristics:
- wide and fast fl uctuations of the ambient temperature;
- relative humidity exceeding 80%;
- exposure to direct water jets under pressure;
- remarkable magnetic and/or radio frequency interferences (e. g., of transmitting antennas).
2. Utilize lugs suited to the terminal block in use. Loosen each screw and insert into them the lugs, afterwards tighten the screws.
Finally, gently pull the cables to check their correct clamping.
3. Separate as much as possible the cables of the probe signals and of the digital inputs from the power and inductive load
cables in order to avoid possible electromagnetic noises. Absolutely do not introduce into the same cable ducts (included
those of the electric cables) power cables and probe cables. Avoid the probe cables being installed close to power devices
(contactors, magnetothermals, or other devices). Reduce as much as possible the course of the probe cables in order to
prevent the occurrence of spiral courses enclosing power devices. To extend the probe cables, utilize cables with a minimum
section of 0.5 mm 2 at least.
4. Do not get near the electronic components mounted on the cards with your fi ngers in order to avoid stray
currents (extremely harmful) from the operator to the components themselves.

Connection

digital inputs
Caution: an improper power supply connection can seriously damage the system.

Power ON

When switched on, the instrument displays an introductive mask reporting the version of the software installed. After a few
seconds, the instrument enters the normal functioning mode, in which the read temperature and date are shown. At the fi rst
switching on, the operation parameters are those of default (see the table on page 15).
Once selected, the desired values of the parameters are stored and recalled at every successive Power ON.
If at the switching on the mask:
probes
230 Vac~
dial