Specifications

Hardware Installation
151117 4-11
4.9 SK-2880 Installation
The SK-2880 is an Input/Output module. The SK-2880 has 34 pre-defined open collector
outputs (see Table 4-7) that can be used to drive LEDs, interface with other controls or
systems, or control one of the three built-in Form C relays. See Figure 4-10, Figure 4-12 and
Figure 4-13.
The SK-2880 also has two supervised inputs used for Reset and Silence. See Figure 4-13.
Figure 4-10 Components of the SK-2880 I/O Module
4.9.1 SK-2880 Specifications
Table 4-5: Specifications
Circuit Rating
Max. Loop Resistance: Data 25
Ω
-25
Ω
+25
Ω
Max. Current: Alarm: 35 mA
Standby: 35 mA
Open Collector: 20 mA each or 680 mA total.
Operating Voltage: 24 VDC
Operating Temperature: 32° - 120° F (0° - 49° C)
Form C Relays 2.5 A @ 30 VDC Resistive
Reset/Silence
Switch Inputs
Form C
Relay 1
Form C
Relay 2
Form C
Relay 3
Serial Communication
Terminals
Status
LED
Open Collector
Outputs
Terminal
Strip 1
Terminal
Strip 2
Device ID
Dip Switches