Tecfluid LU Series - Manual (Page 8)

8
The analog output can be either active (default configuration), that means that the
receptor must be passive, or passive, what means the receptor must supply the power for
the current loop. It is recommended to use a receptor with an input resistance of less than
700
Ω to guarantee correct operation.
To configure the analog output type (active or passive) there are two jumpers situated just
behind the terminal strip. For the passive mode the jumpers must be between pins 2 and
3 and for active mode the jumpers must be between pins 1 and 2.
In the case of using HART communication the output mode should be passive. Normally a
HART master is active (for more details about the communication and installation with
HART, see point 7).
NOTE: The analog output has protection against reversed polarity. Due to another
protection against over voltages, if a loop supply voltage of higher than 32 V is connected
the equipment may be damaged.
Ammeter
Ammeter
Level
transmitter
Level
transmitter
Power
supply
Passive output
Active output