To prevent electric shock, be sure to turn off the NOVA controller and source circuit
breaker before wiring.
(1) In case of DC RELAY
(2) In case of AC RELAY
CR FILTER
(Need to connect direct to RELAY COIL Terminal (SOCKET))
External AC
Power
Master
R
7.12 Communication Wiring (RS485)
■ Up to 31 slave controllers(Nova series instruments equipped with communication option)
can be multidrop-connected.
■ Be sure to connect terminating resistors(220Ω, 1/4W) to slave and master controllers at
communication-channel ends as shown above.
Master Station
NOVA Controller
Terminating Resistor
SHIELD
RTX+
RTX+
RTX+
RTX- RTX- RTX-
SG
SG
SG
R
External DC
power
RELAY
(Rating Specification of RELAY COIL should be used lower than the Contact
Rating of Controller)
DIODE
(Need to connect direct to RELAY COIL Terminal (SOCKET))
Master
Terminating
Resistor
NOVA Controller
RELAY
(Rating Specification of RELAY COIL should be used lower than the Contact
Rating of Controller)
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