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8.4 Relay control card
Controls automatic change over operations:
•
by controlling in various ways (±12V DC, ±24V DC, free switch) up to four coaxial
relays and supervising their movements (3 digital inputs for each relay: limit switch
position 1, limit switch position 2 and relay in movement);
•
by switching the audio signal through five BNC connectors, connected as 4-
position switches and one common connector.
This type of card is not present in the devices for telemetry only (TLC300 and
TLC2000).
8.5 Power supply
Alternating current with mains voltage 100-120-220-240V which can be selected
externally, or 24V direct current.
The power supply unit which powers the various cards in the device is of the switching
type.
Models SCM1+1 and SCMN+1 also have a terminal board for selection of the coaxial
relay control voltage (12V or 24V).
User Manual
Rev. 1.0 - 05/05/03
TLC2000
31 / 50
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