Table of Contents
Advertisement
Section 3: Modes of Operation
The 411/411UD digital communicator has five operational modes:
•
Normal Mode
•
Real Time Clock Mode (requires valid password)
•
Program Mode (requires valid password)
•
Troubleshoot Mode
•
Default Mode
The operational mode for the digital communicator is Normal Mode. The operator is able to switch
between any modes of operation provided no alarm events are active in the system. It should be
noted that the digital communicator will not respond to input activations while in any mode except
Normal Mode.
Some modes require a valid password. Refer to Section 3.2 on page 24.
Access to any other Mode requires connection of the PRO-411 DACT Programmer which consists
of a keypad and display. Refer to Figure 3.1.
3.1 Normal Mode
Normal Mode is the standard (default) mode of operation for the 411/411UD digital communicator.
The communicator continuously monitors and reports to a central station, the status of the input
channels as well as the status of the digital communicator itself. If no activity is detected on the
input channels (no shorts or opens) and the communicator is operating free of internal troubles, the
digital communicator will display the following conditions:
•
All LED are off
•
Onboard piezo sounder is off
•
The relay is in its normal deactivated state
•
Communicator is not transmitting to the Central Station
The 411/411UD digital communicator transmits system status reports to a central station via the
public switched telephone network. Two supervised telephone line connections are made to inter-
face the digital communicator to the telephone lines. Both telephone lines are supervised by the
411/411UD for proper voltage.
The 411/411UD is capable of line seizure on both the primary and secondary telephone line inter-
faces. Any time the digital communicator detects the necessity to call the Central Station, line sei-
zure will disconnect any local premises phones sharing the same telephone line. Sharing of phone
lines, for fire systems, must be approved by the Local Authority Having Jurisdiction. All transmis-
sions to the Central Station will be sent over the Primary phone line. In the event of a noisy or
faulty phone line, transmissions will be sent over the backup Secondary phone line.
Transmission options exist to:
•
send reports to the secondary phone number as backup only
•
send reports to both the primary and secondary phone numbers
•
send reports to the first available central station phone number
If 10 total attempts to communicate are unsuccessful, the digital communicator will turn on the
Communication Fail LED.
The 411/411UD meets NFPA 72 requirements for Remote Station Protective Signaling Service and
Central Station Signaling Service reporting requirements for: (a) the type of signal, (b) condition
and (c) location of the reporting premises. See Section 4, "Central Station Communications", for
additional information.
22
411 & 411UD Manual — P/N LS10105-000GE-E:A 1/29/2014
Hide quick links:
Advertisement
Table of Contents
