Honeywell International Inc. 7720PLUS Manuale Utente
7720PLUS Installation and Setup Guide
1-4
Upon detecting an alarm or restoral, the 7720PLUS transmits the messages to the master
station network. The transmissions repeat for approximately 6 minutes (total of 60
messages) to ensure that the alarm or other report is received by the central monitoring
station.
station network. The transmissions repeat for approximately 6 minutes (total of 60
messages) to ensure that the alarm or other report is received by the central monitoring
station.
The 7720PLUS periodically transmits supervisory status messages to the AlarmNet
network. The supervision period (window) is a programmable feature. If no messages are
received during the supervisory window, the network will generate a communication failure
signal to the central station.
network. The supervision period (window) is a programmable feature. If no messages are
received during the supervisory window, the network will generate a communication failure
signal to the central station.
Radio faults that may prevent communication are indicated locally via the Radio Fault LED
(refer to Table 2) and they are reported to the control panel via the fault relay in zone mode
or via the ECP Status message in ECP mode. The fault relay, which is only available in zone
mode, is a contact closure that can be either normally open or normally closed. In addition it
can be selected to be “fail-safe” by programming the fault relay to be “on” (i.e., the relay is
powered unless there is a fault). The fault output is between TB1-11 and TB1-12, which float
with reference to the rest of the circuit.
(refer to Table 2) and they are reported to the control panel via the fault relay in zone mode
or via the ECP Status message in ECP mode. The fault relay, which is only available in zone
mode, is a contact closure that can be either normally open or normally closed. In addition it
can be selected to be “fail-safe” by programming the fault relay to be “on” (i.e., the relay is
powered unless there is a fault). The fault output is between TB1-11 and TB1-12, which float
with reference to the rest of the circuit.
When using ADEMCO's low-end control panels (VISTA-10SE, VISTA-20SE, VIA-30P), the
ECP Status code is displayed on the control panel's keypad as “Long Rnge Fail” followed by a
4-digit code. When using ADEMCO's high-end control panels, a description of the fault is
displayed in conjunction with a “CHECK 8xx” message where “xx” is the ECP address of the
7720PLUS.
ECP Status code is displayed on the control panel's keypad as “Long Rnge Fail” followed by a
4-digit code. When using ADEMCO's high-end control panels, a description of the fault is
displayed in conjunction with a “CHECK 8xx” message where “xx” is the ECP address of the
7720PLUS.
Also available only in zone mode is the ability for the 7720PLUS to provide status
information via its serial port, thus allowing radio status to be displayed on command, using
either a 7720P Programming Tool or a computer terminal. Refer to Section 5: Testing the
7720PLUS for information regarding the “S” command and status messages.
information via its serial port, thus allowing radio status to be displayed on command, using
either a 7720P Programming Tool or a computer terminal. Refer to Section 5: Testing the
7720PLUS for information regarding the “S” command and status messages.
Low Battery Detection and Restoral
Low Battery Detection
The radio tests the condition of the battery periodically. If the radio finds that the battery is
low, a low battery warning message is transmitted. When the battery voltage restores, the
radio transmits a battery restore message.
low, a low battery warning message is transmitted. When the battery voltage restores, the
radio transmits a battery restore message.
The battery is under continuous float charge whenever the AC power is connected and
sufficient.
sufficient.