Macurco GBC-2-120, Installation & Operation Manual

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Macurco GBC Manual
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3.2.2.3 Horn/Strobe Connection
The horn/strobe output provides 24 VDC power to a remote horn/strobe (250 mA Max). The horn/strobe will
engage during the same time the onboard relays are set to engage based on the detector set point. See Figure 3-6
and Figure 3-7
3.2.2.4 Relay Connections
There are four expansion slots that accept the Macurco Expansion Relay boards. Each Expansion Relay board
contains two SPDT, 120/240 VAC, 10 A Max (resistive) relays.
Each relay can be wired to be either normally open (NO) or normally closed (NC) depending on the application.
There is no polarity for these connections. Each terminal can accommodate a wire size from 12 to 24 AWG.
Each relay PCBS are labels NO1, COM1, and NC1 for Relay 1 and NO2, COM2, and NC2 for relay 2. See Figure 3-8.
To use relay 1: connect one control wire to the COM1 terminal. For normally open (NO) configuration, connect the
other control wire to NO1 terminal. For normally closed (NC) configuration, connect the other control wire to the
NC1 terminal.
To use relay 2: connect one control wire to the COM2 terminal. For normally open (NO) configuration, connect the
other control wire to NO2 terminal. For normally closed (NC) configuration, connect the other control wire to the
NC2 terminal.
Note: All relays in normal mode are energized and illuminated LEDs on the boards indicate the relays are
energized
Figure 3-8 – Relay PCBA
To connect wires to the relay terminals (See section 3.2.1)