Honeywell XLS-278 Manuale Utente

EN0C-0741 0599R2-MA

2

- Number of recorded troubles, alarms, and time and

date of last alarm.

- Up to 24 possible trouble codes which can be used to

specifically diagnose faults.

The loop controller learns where each device's serial number
address is installed relative to other devices on the circuit.
The loop controller keeps a "map" of the Signature Series
devices connected to it.

Signature Series Data Entry Program also uses the mapping
feature. With interactive menus and graphic support, the
wired circuits between each device can be determined.
Layout or "as-built" drawing information showing the
branches (T-taps), device types and their address are stored
on disk for printing hard copy. This takes the mystery" out of
the installation. The preparation of "as-built" drawings is fast
and efficient.

Device mapping allows the Signature loop controller to
discover:
- Unexpected additional device addresses.
- Missing device addresses.
- Changes to the wiring in the circuit.

A decentralized alarm decision by the station is guaranteed.
On-board intelligence permits the station to operate in stand-
alone mode. If loop controller CPU communications fail for
more than 4 seconds, all devices on that circuit go into stand-
alone mode. The circuit acts like a conventional alarm
receiving circuit. Each station on the loop will still transmit an
alarm if its operating lever is pulled.

Built-in intelligence means less information needs to be sent
between the station and the loop controller. Other than
regular supervisory polling response, the station only needs
to communicate with the loop controller when it has
something new to report. This provides very fast control
panel response time and allows a lower baud rate (speed) to
be used for communication on the loop.

The lower baud rate offers several advantages including:
- Less sensitivity to circuit wire characteristics.
- Less sensitivity to noise glitches on the cable.
- Less emitted noise from the analog wiring.
- Twisted or shielded wiring is not required.

Twin LEDs provide visual indication of normal and
alarm/active conditions. They are visible only when the
station is removed from the mounting box. A flashing GREEN
LED shows normal system polling from the loop controller. A
flashing RED LED means the station is in alarm/active state.
Both LEDs on steady shows alarm state in stand-alone
mode.

The Signature Series fire alarm manual pull stations mount to
North American 2-1/2in (64 mm) deep 1-gang boxes and 1-
1/2in (38 mm) deep 4insquare boxes with 1-gang covers. The
terminals are suited for #14 to #18 AWG (1.5 mm

2

 to 0.75

mm

2

) wire size.

Honeywell recommends that these stations be installed
according to local codes.

NOTE: This module will not operate without electrical power.

As fires frequently cause power interruption, we
suggest you discuss further safeguards with your
fire protection specialist.

The loop controller electronically addresses each station,
saving valuable time during system commissioning. Setting
complicated switches or dials is not required. Each station
has its own serial number stored in its "on-board memory".
The loop controller identifies each device on the loop and
assigns a "soft" address to each serial number. If desired, the
stations can be addressed using the SIGA-PRO Signature
Program/ Service Tool.

The operating characteristics of the fire alarm stations are
determined by their sub-type code or "Personality Code".
NORMALLY-OPEN, ALARM-LATCHING (Personality code 1)
is assigned by the factory; no user configuration is required.
The device is configured for Class B IDC operation. The
ALARM signal is sent to the loop controller when the station's
pull lever is operated. The alarm condition is latched the
station.

To test (or reset) the station, simply open the station using a
special tool and operate the exposed switch.
The station's automatic self-diagnosis identifies when it is
defective and causes a trouble message. The user-friendly
maintenance program shows the current state of each
Signature series device and other pertinent messages.
Single devices may be deactivated temporarily, from the
control panel. Availability of maintenance features is
dependent on the fire alarm system used.
Scheduled maintenance should be planned according to
local codes.