12
Sensors/transmitters 4/20 mA with 2 active wires :
C1:
signal (current return to ground)
C2:
not connected
C3:
positive power supply (+24 Volts)
Sensors/transmitters 4/20 mA with 3 active wires :
C1:
signal (current return to ground)
C2:
power supply 0 Volt
C3:
positive power 24 Volts
1.
For each sensor family, the manufacturer will insert a programming support (Explo 340mA
or 4 -20mA) to the circuit: see above figure.
2.
Note: if several OLCT10 toxic sensors are connected (maximum 5), programming of the
electronic circuit is required, which should be performed by an authorized person.
2.3.2.
Alarm relays
The MX 15 central unit has two alarm relays corresponding to two pre-programmed instant alarm
thresholds.
The relays are in positive safety (negative upon request) and potential-free.
REL1 terminals match the relay 1 contacts (alarm 1).
REL2 terminals match the relay 2 contacts (alarm 2).
The relay contacts can be used “normally open or closed” moving the appropriate jumper (next to
relays)
The relay contacts are potential-free.
Refer to the wiring examples at the end of manual.
2.3.3.
Fault relays
The fault relay is in positive safety.
The DEF terminals match the fault relay contacts (fault).
The relay contacts can be used “normally open or closed” moving the appropriate jumper (next to
the relay)
The relay contacts are potential-free.
Refer to the wiring examples at the end of the manual.
2.3.4.
Remote acknowledgment
A pushbutton for “remote acknowledgment” may be connected to the MX15 central unit to the
“acknowledgment” terminals (dry and potential-free contacts) at a maximum 2-meter distance.
Refer to the wiring examples at the end of manual.
Содержание MX15
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