Tyco 4100U The IDNet Card, Continued, 1.IDNet Specifications, Electrical Specifications

The IDNet Card, Continued

LEDs

Specifications

The IDNet card has the following LEDs:

LED1. Normally off. Turns on steady if the IDNet card is not communicating with the 4100 CPU.

LED2. Normally off. Illuminates to indicate a problem with the IDNet lines.

•Steady on indicates channel failure.

•One repetitive blink indicates a line short.

•Two repetitive blinks indicate a Class A failure or an open line.

	Table 8-1. IDNet Specifications
Electrical Specifications
Input Voltage	24 VDC nominal from FACP (24V Card Supply from SPS)
Coms/Power	30 VDC (nominal) or 35 VDC @ 250 mA
Voltage to
	36.5V max (See below)
IDNet Slaves
Coms/Power	350mA ave current @ 49° C
Current Limit
Coms/Power	40 Ohms max loop resistance
Wiring
	0.58 ∝F capacitance max (line to line and shield to line)
Distance
Environmental Specifications

Operating

Temperature

0° to 50° C

•Voltage output to IDNet is normally 30 VDC. Output is increased to 35 VDC when LEDs, piezos, or other outputs are activated, as in the alarm state.

•The 30/35V PSU on the IDNet is rated at greater than 350mA. The current limit is provided by a PTC.

•Up to 250 IDNet devices are supported by one IDNet channel.

•The IDNet card keeps track of which LEDs should be on at all times, and displays up to 20 at any given time.

•Up to 43 coded piezo sounders are supported by one IDNet channel.

8-3