If inductance load is over as per the controller specifications, it is needed to set frequent
On/Off relay operations.
To prevent electric shock, be sure to turn off the Nova controller and the source circuit
breaker before wiring
To protect electric shock, be sure to turn off the Nova controller and the source circuit
breaker before wiring
7.10 External Contact Input Connection(DI)
■ Use a no-voltage contact such as relay contact.
■ It has an ample switching capacity for the terminal’s OFF voltage (approx. 5V)
and On current (approx. 1mA)
■ When using Open Collector(TR), use one with 2V or lower voltage when the contact is ON and
100㎂ or less leakage current when it is OFF.
7.11 Use an Auxiliary Relay.
■ When using an auxiliary relay or inductance load (L) such as solenoid, be sure to insert a CR filter
(for AC) or diode (for DC) in parallel as a surge-suppressor circuit to reject sparks, preventing
malfunction or damage.
Recommended CR filters are as follows.
■ Recommended CR FILTER
▶ Seong Hoo Electronics : BSE104R120 25V (0.1μ+120Ω)
▶ HANA PARTS CO. : HN2EAC
▶ Songmi Eolectic co.,Ltd : CR UNIT 953, 955 etc
▶ Jiwol Electric Co.,Ltd : SKV, SKVB etc
▶ Shinyoug Communications Co.,Ltd : CR-CFS, CR-U etc
DI_2
NOVA
DI_COM
DI_1
▲ RELAY Contact Connection
DI_2
NOVA
DI_COM
DI_1
+5V
▲ TRANSISTOR Contact Connection
7.9 External Contact Output Connection(RELAY)
COM
NOVA
RLY_NC
RLY_NO
