Specifications

Hardware Installation
151117 4-15
4.9.5 Wiring SK-2880 Open Collector Outputs
Figure 4-12 illustrates examples of how to configure the open collector outputs on the I/O
module for your uses.
Figure 4-12 Output Configurations
4.9.6 SK-2880 Input Switches and Relay Wiring
This section describes the components of terminal strip 2 (see Figure 4-10) on the SK-2880.
Terminal strip 2 provides two input switches (Reset & Silence) and three Form C relay. Figure
4-13 illustrates how to configure the inputs switches and the Form C Relays.
Figure 4-13 Wiring Examples for Input Switches and Form C Relays
Note: Reset and Silence switches must be UL recognized switches. Reset and Silence switches must be in the same
room as the UL Listed Graphic Annunciator.
To P2, Pin 11 or
+ on Terminal Strip 1
LED
Current Limiting
Resistor Must be
Dry Contact Relay
at Least 1 K
Ω
Provided by the UL
Listed Graphic Annunciator
Any Open
Collector Output
UL
Listed
EOL
Model
7628
4.7 K
Ω
4.7 K
Ω
Supervised
Power Limited
Dry Contact outputs
must be connected
to a power limited
source.
Power Limited