3
T2612 UNI
TECSYSTEM S.r.l ®
2) MOUNTING
Make a hole with the dimensions of 155 x 280 mm (See cut-out diagram at page 13)
3) POWER SUPPLY
Select the power voltage (120 or 240 VAC) through the “Voltage change” jumper.
REMARK: In case of unit replacement, to grant the correct and safe operating, you
must replace the sensors, relays, and power supply connecting terminals with the
new terminals provided with the unit: this only if the terminal blocks are of different
brand.
4) ALARMS AND FAN CONTROL ELECTRICAL CONNECTIONS
Take the removable terminal board off the unit before wiring.
ALARM and TRIP relays energize only when the prefixed temperature limits are reached.
The FAULT relay always energizes when the apparatus is powered and it resets when the
Pt100’s are damaged or when there is no power voltage.
The FAN relays can be used for fan control or else they can be included in the conditioning
circuit of the transformer box.
5) THERMOMETRIC SENSORS CONNECTION
Each Pt100 sensor has three conductors : one white and two red (CEI 75.8)
Fig.1 shows the disposition in the terminal board of the connection cables to the unit.
Channel 2 must be always referred to the central column of the transformer.
Channel 4 must be always referred to the ambient Pt100 sensor, if you want to monitor the
temperature of the transformer box through the T2612 unit.
6) PT100 EXTENSION CABLE: TECHNICAL SPECIFICATIONS
Cable 20xAWG 20/19 Cu/Sn
Section 0.55 mm²
Flame retardant Insulation PVC105
In accordance with CEI 20.35 IEC 332.1
Max working temperature: 90°C
Conformation : 4 terns of twisted and coloured conductors
Shield Cu/Sn
PVC flame retardant protection covering
External diameter 12.0 mm
Skeins of 100 m
In order to protect the electronic apparatus, we recommend the application of the
insulation transformer 240VAC/240VAC or 120VAC/120VAC.
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