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THERMOSALD UPSCR_M_V3
08/2000
ANNEX B - INSTALLING THE TEMPERATURE CONTROLLER
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POWER CONNECTIONS: use adequately-sized cables to connect the transformer's secondary winding to terminals
CN1/L1-L2, from terminals CN1/+ - to the sealing band and from terminal CN1/EARTH to the earth electrode
(for cables shorter than 5m: 30 Amp. temperature controller - 2 x 4 sq.mm (minimum cross-section)
60 Amp. temperature controller – 2 x 6 sq.mm (minimum cross-section)
for cables longer than 5m: contact our Engineering Department.
It is advisable to twist the power cables together or use a twisted screened two-core cable in order to limit the electro-
magnetic emissions. Contact our Engineering Department for further information.
The power cables should not be placed next to sensitive pieces of equipment (PC, PLC, Analog interfaces)
•
SIGNAL LEAD: only use a two-core twisted screened cable with the screen connected on the equipment side only to
CN3/8 (we recommend using a TWINAX 7362211 cable). This cable should run directly from the temperature
controller to a terminal block next to the band installed on the machine. The wiring of the signal lead should be
completed from this terminal block with 2 cables connected directly to the ends of the band. Avoid interrupting the
circuit at any other points unless absolutely necessary. If a further interruption is necessary, electrical continuity of the
screen should be maintained without making earth connections at the intermediate points.
The signal lead should not be placed near parts and cables of other pieces of equipment which produce considerable
electro-magnetic interference (Drives, Motors, Transformers).
•
PHASE-LINE CONNECTIONS: the power transformer supply and the 220Vac control circuit supply should be
phased:
1 – supply/neutral wire connection (220Vac): use the same phaseline
2 – supply wire-to-supply wire connection (380Vac): for the control circuit, use a 380/220 V transformer
shunted to the same phaselines as the power transformer or, as an alternative, use a 220 Vac tap on the
power transformer's primary winding (in this case, however, the temperature controller will shut off if a fault
arises).
•
VENTILATION: The equipment should be installed inside the electrical cabinet in such a way that adequate natural or
artificial ventilation is provided in the heat sink. It is a good idea to position the temperature controller at the bottom of
the electrical cabinet at least 3 cm away from the conduits above and below it.
