Visonic MAESTRO-1600 - Page 17

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Terminals Wiring Information
12 VDC
A pair of
12 VDC (+)
and
(–)
supply terminals. The
maximum current that can be obtained for external
devices depends on the amount of current already
drawn from the main control module by external
devices. The total current should not exceed 700
mA.
BUS
Terminals 1 through 4 serve for connecting the
expander to the system via a 4-wire keypad bus.
Each terminal should be wired to its identically
numbered counterpart in the MAESTRO-1600
control module or in one of the keypads. Refer to
Sec. 8 - Bus Length Considerations.
Z9
Zone 9 terminal. A normally closed (N.C.) zone
loop will be formed if the alarm contacts of all
detectors in this zone are connected in series
between this terminal and the nearest (–) terminal.
An 10 k
Ω
End-of-Line (EOL) resistor must
complete the series connected loop at the point
most distant from the zone terminals.
(–)
A negative common terminal. Each zone loop is
connected between the respective zone terminal
and a
(–)
terminal.
Z10
The wiring instructions are the same as for zone 9,
with which zone 10 shares the
(–)
terminal.
Z11 to Z16
Three pairs of zones, with a
(–)
terminal between
each pair. Wiring instructions are the same as for
the first pair of zones (Z9 and Z10).
Note: The module is shown here as viewed when installed within
the metal cabinet
IMPORTANT! If the remote expander is disconnected from the
keypad bus while the alarm system is in the disarmed state, a
buzzer alarm will be initiated, and the communicator will send a
"Expander Bus Error" event code to the central station.
Figure 6.4 EXP-1600 Wiring
If the remote expander is disconnected from the keypad bus while
the alarm system is in the armed state, a siren alarm will be
initiated, and the communicator will send a "
Expander Bus Error
"
event code to the central station.
Expander bus error will be reported provided that you program the
required event code in Location 34 - refer to the Installer's
Programming Manual.
Upon reconnection of the keypad, an
"Expander restore"
message will be sent to the central station (provided that you
program the required event code in Location 34). The alarm will
continue until it times out or until you stop it by keying
[User Code]
[∗]
(see Sec. 3 in the User's Guide).