ADEMCO 7720PLUS Manuale utente
N7734V1 10/96
7720PLUS
SYNTHESIZED SUBSCRIBER RADIO
INSTALLATION INSTRUCTIONS
DRAFT
TABLE OF CONTENTS
SYSTEM FEATURES & OPERATION 2 OPEN/CLOSE TELCO & TAMPER ZONE SEL.15
Features 2 Redundant Central Station Reporting 15
General Operation 3 Exiting Program Mode/Setting Defaults 17
LED Indications 4 ECP Mode Unique Programming 18
Radio Fault Led Patterns 4 ANTENNA MOUNTING 20
Low Battery Detection 5 Selecting A Site 20
SETTING THE JUMPER OPTIONS 6 Standard Wire Antenna 21
JUMPER POSITIONS DIAGRAM 7 Optional Antennas 21
WIRING, MOUNTING & POWERING 8 POST INSTALLATION CHECKLIST 23
WIRING CONNECTIONS DIAGRAM 9 TESTING THE 7720PLUS 24
PROGRAMMING THE 7720PLUS 10 Radio Transmission Test 24
Using A 7720P Programming Tool 10 System Test 24
Choosing Mode, ECP or Zone 10 ECP Status Codes 26
Zone Mode Unique Programming 11 Last Detected Fault “E” Command 27
Password Protection 11 Unique Contact ID Messages in ECP Mode 27
Subscriber Information 12 TROUBLESHOOTING 28
PULSE/DELAY ZONE DETECTION 12 NOTES FOR UL INSTALLATIONS 29
INVERTED ZONE SELECTION 13 SPECIFICATIONS 29
RESTORAL REPORTING 14 CONNECTIONS DIAGRAM 30
N7734V1 10/96
Note to the Installer: Please read these Installation Instructions all the way through and become
completely familiar with them before attempting to install a 7720PLUS subscriber radio. Note to pubs:
change p/n and rev date
– 3 –
SYSTEM FEATURES & OPERATION
Introduction
The 7720PLUS self-contained synthesized subscriber radio is the subscriber end of a Long Range
Radio alarm reporting system. As a communications link, by analogy to a telephone-based system,
the 7720PLUS is comparable to a digital communicator connected by telephone line to a central
monitoring station.
Synthesized Frequency Selection
The 7720PLUS can be programmed to operate on any authorized radio frequency. It is not
necessary to stock a separate radio for each frequency the installer supports.
Wireless Reporting
All alarm and status messages are transmitted to the master station network via radio signals, which
means faster and more secure reporting.
Integrated Electronics
The entire radio link equipment, except for the AC power supply unit, including interface,
transmitter, battery and antenna, is housed in a single package, requiring only alarm inputs from a
compatible alarm panel.
Selection of Input Interfaces
The 7720PLUS can monitor alarm inputs from the Ademco ECP interface, discrete 4 zone contact
closures or their electrical equivalent
NOTE: ECP features are compatible only with 685 software revision 4.7 and higher, and
685-5 software revision 8.1 and higher.
Compatibility
The 7720PLUS is compatible with existing installations using ADEMCO equipment or other control
panels. The 7720PLUS can be used in conjunction with digital communicators on the same system,
both acting as backup to one another (use an ADEMCO 659-EN Line Monitor connected to a zone
input to report a line cut to backup a digital dialer), while connecting the radio fault output to a zone
on the dialer.
Built-in LED Indicators
Three LEDs are used to indicate message transmissions, and radio faults. A blinking yellow LED
indicates normal operation. (See LED Table Page 4).
Built-in Tamper Protection
For added protection, built-in cover tamper switches will trigger an alarm whenever the chassis cover
is removed, thus protecting against unauthorized access to the 7720PLUS. The tamper zone number
must be entered during programming to enable tamper reporting. A radio configured for ECP will
automatically report the tamper status to the control panel, as well as to the Central Station
Antenna Included
The 7720PLUS can use either the supplied omni-directional wire antenna, or can use a 7825 outdoor
antenna, 7625 omni-directional antenna, 7625-3DB antenna (if additional gain is required), a 7674, a
7674-13 YAGI antenna (if a directional antenna is required), by using the optional 7720ANT
connector kit. For wall mounting, an optional 7825DP can be used. The supplied antenna mounts
directly to the7720PLUS. The antennas (other than the wire and the dipole) can be mounted
remotely, if desired, using the following pre-assembled coaxial cable, available from ADEMCO: 5ft
– 4 –
coax (P/N 7626-5), 12ft coax (P/N 7626-12), 25ft coax (P/N 7626-25HC), and 50ft coax (P/N 7626-
50HC).
Programmable Features
The 7720PLUS utilizes EEPROM (Electrically Erasable ROM) technology, which allows the
7720PLUS to be programmed with a 7720P Programming Tool. The programming options include
radio frequency channel number (1 to 14), Telco channel assignments for fault input, inverted trigger
inputs, delayed reporting channels (1-127 seconds delay, if selected), open/close/restore reporting
channels, etc.
Self -Diagnosing Transmitter
Malfunctions of the transmitter, including antenna fault, radio transmitter fault, loss of external
power, and low internal DC voltage can be displayed on the 7720P programming tool or reported on
the ECP interface, as well as being transmitted to the master station, if the fault does not prevent
such transmission. Faults can also trigger contact closures on a Form “C” relay to indicate radio
faults.
Power Supply
The 7720PLUS is powered byan AC wall transformer, part number (TBD), whichprovides 12 volts AC
to the radio on pins 1 and 2 of the terminal block. An internal rechargeable battery provides power to
the radio in the event of AC power outage. This battery is charged from the AC power supply during
normal operation of the radio.
Low Battery Monitoring
The 7720PLUS will notify the central station of a low battery condition whenever the battery voltage
drops below 9.93V (+/- 2%). Low battery restore messages are reported “” when the battery voltage
reaches 10.03V (+/-2.5%). A radio configured for ECP will report the battery status to the control
panel as well as to the central station.
Low Battery Shutdown
In the absence of AC power, if battery voltage drops below 9.45 volts, the 7720PLUS will
automatically shutdown and ALL LEDs WILL BE OFF. However, so long as there is AC power, in the
normal range of 102 to 138 VAC at the wall outlet, the radio will operate properly, regardless of the
condition of the battery.
General Operation
The 7720PLUS receives alarm and restore signals from the alarm control panel and converts these
signals to radio messages which are transmitted to the master station network, which in turn relays
the messages to the central station. The 7720PLUS can monitor 4 traditional zone inputs or an ECP
signal line from an appropriate control panel. The first two zones may be configured by the use of a
jumper, to activate on either 0 volts or 4.5-14.2VDC; zones 3 and 4 are hard-wired to activate on 4.5-
14.2VDC. Zones 1-4 can also be programmed to invert the sense of their input signals. (Zones
normally are activated when the signal goes to a positive voltage. Inverting the zone trigger means
that the zone will be activated when the signal goes to ground. The pull-up voltage for zones 1 and 2
can be supplied by changing a jumper, if desired; pull-up voltage for any of the zones can be supplied
from the radio thru external resistors, or from an alarm panel.)
Upon detecting an alarm or restoral, the 7720PLUS will transmit the messages to the master station
network.The transmissions will repeat for approximately 6 minutes (total of 60 messages) to ensure
that the alarm or other report will be received by the central monitoring station.
The 7720PLUS periodically transmits supervisory status messages to the AlarmNet network. Radio
faults that are indicated during transmissions may prevent communication; to prevent this, the fault
output (available in zone mode only) can be programmed to also indicate radio faults (programming
– 5 –
the fault output is explained later in this chapter). If no messages are received during the supervisory
window, the network will generate a communication failure signal to the central station.
Available in zone mode only is a contact closure used to locally indicate a radio fault. This can be
either normally open or normally closed. In addition it can be selected to be “fail-safe” by
programming the fault output to be inverted (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.
Also available in zone mode only 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 the TESTING THE 7720PLUS section for
information regarding the “S” command and status messages.
LED Indications
LED State Meaning
GREEN Flash With YELLOW solid = Message transmission
YELLOW Solid
Rapid Flash
(10 per second)
Slow Flash
(1/second)
Slower Flash
(1 per 3 seconds)
Transmission cycle ON
Test or FAST message
Normal operation
Normal, but low battery condition detected.
RED Solid Pattern Radio Fault detected. See flash patterns table below.
YELLOW
and RED Flashing in unison Loss of communications between the radio and the
control panel. (ECP mode only)
All
illuminated
Consecutive
Slow Unison
(2 per second)
Power On/Reset sequence. Repeated twice before
entering normal mode. Press [ENTER] during cycle to
enter Program Mode.
Radio is not properly programmed. Will continue until
[ENTER] is pressed to enter programming mode. (IF in
ECP mode, radio must be rebooted before entering program
mode)
– 6 –
Radio Fault LED Flash Patterns
# Flash Reason
1S-L-L-L Internal radio fault
5S-L-L-S Low power or high VSWR.
CRC S-S-L-S RAM/EEPROM corruptions
S=Short flash (150mS); L=Long flash (600mS)
#=Fault code number. See “S” command in the TESTING THE
7720PLUS section for additional status information.
Low Battery Detection & Restoral
Low Battery Detection
The radio tests the condition of the batteryperiodically. If the radio finds that the battery is low, a low
battery warning message will be transmitted. When the battery voltage restores, the radio will
transmit a battery restore message.
Battery Charging Mode
The battery is under continuous float charge whenever the AC power is connected and sufficient.
– 7 –
SETTING THE JUMPER OPTIONS (Set Before Installing)
Removing The Cover
Remove the 7720PLUS’s cover by inserting a screwdriver into the 4 removal points at the bottom of
the unit and gently releasing the locking tabs from the cover slots as shown.
.
(J2) Zone Inputs Activate on High or Low
If using zone input connections, set the J2 jumper so that zone 1 & 2 inputs are activated either with
a ground or with a positive voltage, whichever is required.
If the trigger level is set for positive voltage, +4.5 to +14.2 volts must be applied to zones 1 & 2 to
trigger an alarm. If the zone is connected to a normally high voltage trigger (i.e. goes low on alarm),
invert this zone when programming (questions 13 and 14).
If ground is selected, zones 1 & 2 are internally pulled up to 5 volts through a 10k ohm resistor. This
voltage should normally be pulled down (closed contact to ground) and released for alarm (opening the
contact). If a normally open contact is being used, invert this zone when programming (questions 13
and 14).
(J3) Fault Output Select
Refer to the diagram on the following page when setting jumpers.
– 8 –
The radio fault output relay may be programmed for either FAIL-SAFE mode (relay always
energized) or LOW CURRENT mode (relay normally de-energized) by selecting Yes or No to
programming question 27: FLT REL ON (Y/N). In addition, the relay can be set for either N.O. or N.C.
operation (in either fail-safe or low current modes) using the J1 jumper. When fail-safe mode is
selected, the relay will change states (and trigger a dialer, if connected) in the event of power loss.
Note that fail-safe mode increases the standby current by about 10mA, which results in lower battery
backup time (about 15%) in the event of power loss. Set the J1 jumper to position A or position B, as
follows:
Prog. Ques. 26 J1 Jumper Setting (relay N.O. or N.C.)
Fault Relay ON (energized) Pos. B Pos. A
NO N.C. N.O.
YES N.O. N.C.
– 9 –
Trigger voltage outputs: A current-limited source of approximately 12 volts DC is available at pin 3
of the terminal block, for external contacts, etc., that require a pullup voltage.
NOTE: Use color-coded wires for the power connections; it is recommended that the positive connection
be red and the negative connection be black.
Wiring At The Control Panel
’.
Connect the negative wire to the system negative point, which is also the negative line from the
battery.
Run the alarm wires to the transmitter location.
Wiring For ECP Communication with a Control Panel
Only certain panels support ECP data communication at this time. Check the Installation
Instructions of your panel to see if Long Range Radio is supported.
ECP data connections are the Data In and Data Out terminals that the keypads and other peripheral
devices (RF Receiver, VIP module, etc.) use for communication with the panel. To wire the radio for
ECP communication, do the following:
Connect TB1-4 (Ground) of the 7720PLUS to the ground of the panel.
Connect TB1-5 (ECP DATA IN) of the 7720PLUS to “data out to consoles” connection on the panel.
Connect TB1-6 (ECP DATA OUT) of the 7720PLUS to “data in from consoles” connection on the panel.
Note: add ground wire to drawing below. (See page 10a)
– 10 –
Indice
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