The diagram above shows how the floating switch and the bilge pump are connected to the Circuit Control. The 16-mm button with integrated LED switches the pump between manual and automatic modes, and indicates the actual state. The pump can be also controlled from your smartphone. TheWeb Gauges page of theNMEA 2000 Wi-Fi Gateway(which is connected to the 2-Way NMEA 2000 connector) is open on the screen. The pump can also be mananged from buttons connected to theSwitch Control(also connected to the 2-Way NMEA 2000 connector).
Device terminals are shownin Appendix C. Electrical characteristics of the Circuit Control:
four channels: two with normally open contacts (ON-OFF) and two with switching contacts;
latching (bi-stable) relays consume electricity only during the process of switching and stay in their last state after the device is powered off;
maximum constant load current per channel is 10A, peak is 20A (4 seconds, duty cycle 10%);
capable of switching the direct current (DC) and alternating current (AC) loads up to 400 V;
high voltage isolation with a load, 5000 VRMS;
average device consumption is only 30 mA.
The Circuit Control unit can work in parallel with other units and can be managed from multipleSwitch Controlunits with a matched bank number (252 unique bank numbers are allowed in NMEA 2000). Multiple independent digital switching systems (with different bank numbers) can co-exists in a single NMEA 2000 network.
The Circuit Control and Switch Control are designed to be compatible withOceanic Systems, Offshore Systems, Chetco Digital,Maretron(see p.27 inthe Manual) and Carling Tech displays and relay modules, and with other NMEA 2000 digital switching devices managed with standard NMEA 2000 PGN 127501 "Binary Status Report" and PGN 127502 "Binary Switch Control".