Simplex 4007ES Hybrid - Idnet Section; Idnet Section Overview; Specifications; Device Addressing (Class a and Class B)

5-2
Chapter 5 4007ES Power Supplies
IDNet Section
IDNet Section
Overview
The power supply provides an isolated IDNet
channel. This section is compatible with IDNet
communicating initiating devices and allows the
system CPU to communicate with up to 250
peripheral devices, such as smoke detectors and
pull stations.
Figure 5-1. IDNet on the Power Supply
Device
Addressing
(Class A and
Class B)
The IDNet section can be wired as a Class A circuit or a Class B circuit.
Class A wiring provides an alternate communication path that allows communication to all
devices to be maintained when a single open circuit fault occurs. Class A wiring requires two
wires to be routed from the IDNet Primary Terminals (B+, B-) to each device, and then back to
the IDNet Secondary Terminals (A+, A-). Wiring is in/out, “T” tapping is not allowed.
Class B wiring allows “T” tapping. IDNet wiring is inherently supervised due to individual
device level communications. EOL resistors are not required.
IDNet
B+ B- A+ A-
Specifications
Table 5-1. IDNet Specifications
Supports:
Up to 250 addressable IDNet devices and up to 43 coded piezo
sounders may be coded by the IDNet channel. Base panel
supports 100 points, with 75 additional points per additional
IDNet+ Loop Expansion Module (refer to manual 579-1106).
Electrical Specifications:
Channel Voltage
to Remote Devices
30 VDC (normal); 35 VDC Alarm.
Data rate is 3333 bps.
Output circuits are supervised and power-limited.
Earth Detection
Threshold:
10k ohms minimum from either positive or negative terminals.
Circuit Requirements:
Refer to Table 3-2 for the IDNet current on a NAC power supply.
Refer to Table 4-2 for the IDNet current on a IDNAC power supply.
LEDS:
For detailed information on LEDs troubleshooting, refer to Table 5-7 and Table 5-8 in the
Troubleshooting section.