Honeywell Notifier ID50 Installation, Commissioning & Configuration Manual page 33

ID50 Series Panel - Installation, Commissioning & Configuration Manual
EN54-13 : 5.3.4.1,
5.3.4.2
Enablement of partial
short- and open-circuit
monitoring on sounder
outputs.
Setting sounder fault monitoring type:
•
If the sounder cicuit will draw less than
350mA leave the sounder monitoring
type as 'SDR'.
•
If the sounder circuit will draw up to
700mA change the sounder monitoring
type to 'SDH'.
4.4.4.2 Using Diode EOL Devices
The procedure described below is based on the following
assumptions:
a. All sounder circuit cables are in situ with all sounders
connected but not yet connected to the panel.
b. The sounders are of the electronic type, polarized and
suppressed using IN4002 (or similar) diodes. For
correct operation these sounder devices require a
minimum of 15V.
c. The supplied EOL diode is fitted to each sounder
circuit - not the usual 6k8 resistor required with
previous equipment.
Note: Before the sounder circuits are connected it is
recommended that all detection circuits have been
checked and that there is no possibility of spurious
alarm conditions being generated.
Procedure:
1 Link out the end-of-line diode. Use a low-voltage
multimeter, connected in reverse polarity (+ve to -ve
and -ve to +ve), to measure the resistance of each
sounder circuit cable. Note the resistance reading in
the table provided below:
Note: The cable resistance must be measured to
check that all sounders receive sufficient
voltage (15V min) for correct operation. The
cable resistance not only determines its
maximum length but also the maximum
number of sounder devices that can be
connected to ensure correct sounder operation.
2 Set the sounder type - SDR or SDH. The sounder
cannot be of type SDR if more than 350mA is being
drawn. The sounder cannot be of type SDR if the
resistance is more than 16.1Ω. If the sounder circuit
is of type SDH and the resistance is more than 8.1Ω,
a 'OUTPUT B0 n OPEN CCT' fault will be displayed.
Current (mA) Type Cable length (m)
0-700mA SDH
0-350mA SDR
1
Cable lengths based on a conductor CSA of 1.5mm
Refer to Section 5.6.3.1 Output Type Setting for
details on changing the sounder type.
If the panel detects a resistance of less than 390Ω
(approx) between the sounder circuits conductors, a
partial short-circuit fault will be generated.
29
Resistance (Ω)
1
< 350 < 8.1
< 700 < 16.1
2
997-263-000-11, Issue 11
January 2010