Ronan X11SN - Manual (Page 7)

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7.3 Step-by-step Procedures
A. Check the system voltage and verify polar-
ity of supply input voltage and that the sys-
tem voltage lines are not grounded.
B. Isolate all external devices except the input
power connections.
C. Unseat all alarm/lamp modules except the
No. 1 alarm module. At this point the only
items plugged into the alarm chassis are
one alarm module and flasher horn driver
module. Jumper the push-button input ter-
minals on the master module to simulate
the correct connections for operations of
the alarm system (since only normally open
push-button contacts are used for all push-
button functions, no connections will be
made for normal operation).
D. Connect a simulating set of devices to
replace the field contact as shown on the
electrical schematics on terminals 1 and 2.
E. Using the simulated field contacts and fol-
owing the test procedure instructions, check
the sequence operation of the annunciator.
F. If the first alarm module does not operate
correctly, replace the flasher module to
eliminate the possibility of a faulty flasher
module. Once established that the flasher
is functional, the fault will probably lie in
one of the following areas:
1. A faulty alarm/lamp module.
2. No +24 Vdc at terminal 1.
3. Chassis wiring fault such as a short or
cold solder joint.
G. After checking for proper operation of termi-
nal 1 output, remove the No. 1 alarm mod-
ule and insert the No. 2 alarm module in
the No. 1 chassis position. If the No. 2
alarm module operates correctly, this indi-
cates that the No. 1 alarm module is faulty.
Should the No. 2 alarm module not func-
tion in the No. 1 chassis position, the fault
lies in the chassis wiring.
H.If the failure is isolated in the chassis
wiring, remove each alarm input terminal
plate and inspect for foreign objects which
might cause a short. Review for any dam-
aged wiring or broken connections to the
printed circuit board connector. Finally, if
the above procedure does not produce a
solution to the fault, a thorough review of all
solder joints is recommended.
I. Should No. 1 alarm function correctly, con-
tinue with the same procedure for checking
all alarm/lamps modules by seating each
module and using a simulating field contact
switch at each alarm point. After the testing,
should all the alarm/lamp modules function
correctly, it must be assumed that the entire
alarm system and modules are not faulty.
At this point, the error is now confined to the
external wiring, possible push button or
external equipment miswiring, or a short in
the field contact wiring.
J. To avoid further damage to new alarm mod-
ules, do not place another alarm module
into an alarm position that has produced cir-
cuit board trace failures. A detailed review of
the trace failure will determine the reason
for the failure. In most cases, damage can
be the result of high voltage inputs or short-
ing in the chassis.
8.0 ALARM MODULES
8.1 Integral/Push-button Flasher Modules
The X11SN System can operate with either an
integral flasher or push-button flasher module.
These flasher modules function to provide slow
and fast flashing signals and filter the push-
button signals to a V- active mode for the
alarm cards. The integral flasher is identified
by a red handle. The push-button flasher mod-
ule is identified by the membrane switch and
MAINTENANCE and POWER LED indication.
The flasher module has the following specific
field selectable options:
A. Slave or master flashing module control.
B. ISA options 2 and/or 3.
C.Normally energized/deenergized common
trouble alarm output.
D.Time selectable auto-silence on Horn 1.
E. Normally open/closed contact on mainte-
nance required relay.
F. Normally open/closed contacts on alarm
point auxiliary relays (integral modules
only).
Slave (S) or Master (M) Flashing module is
controlled by slide switch SW1. In the M posi-
tion, the flasher will provide slow and fast
flashing rates for all synchronized chassis.
Chassis flashing is synchronized by connect-
ing similar rear terminals F1, F2, and V-.