AC-2000
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4.2.1 AC-2000 Plus Board Layout
4.2.2 AC-2000 Plus Relays
1.
Relays 1 to 19
: Each pair of terminals goes to one relay. These relays are fused with a
5-ampere, 250-volt slow blow fuses. The relays are normally open when not powered.
2.
Relay 20
: Three terminal blocks: This relay normally serves as an alarm relay. It is also
fused with a 5 ampere, 250 volt slow blow fuse, and can serve as an ordinary relay:
o
NC
: Normally closed contact
o
Com
: Common contact
o
NO
: Normally open contact
3.
Power
: Three terminal blocks:
o
Neutral (N)
: Connect to the Neutral Power line.
o
Phase (~)
: Connect to the Phase Power line.
o
Ground (GND)
: Connect to a solid earth safety ground, normally with the bare safety
ground wire, or a green wire.
4.
Ground
: Connect the ground wire to the electrical system.
