Precision Digital PD562 - Manual (Page 35)

External AC
Power
(2) AC External Relay
CR Filter (snubber)
(Connect directly to the relay coil terminals)
Meter
R
!
CAUTION
!
CAUTION
Relay
(Verify relay coil ratings are less than the voltage and current ratings of the relay
contacts of the controller)
To prevent electric shock, be sure to turn off power to the Nova Controller and the source circuit
breaker before wiring.
7.12 Communication Wiring (RS-485)
!
CAUTION
„ Up to 31 slave controllers (Nova series controllers equipped with the RS-485 serial communication
option) can be connected.
„ Be sure to connect terminating resistors (220
Ω, 1/4 W) 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
Terminating Resistor
NOVA Controller
PD560 Series Nova Digital Process and Temperature Meter Instruction Manual
35