Ronan X11SN - Manual (Page 5)

6.0 POWER UP AND TEST
PROCEDURE
It is important to review all external equipment,
including the alarm system, before turning on
power and proceeding with testing. Before
installing, verify that each component meets the
area and environment standard required by the
National Electrical Code. Particular attention must
be paid to reviewing push buttons, horn relays,
horns and bells, to see that they meet the right
classification of the electrical code.
6.1 Wiring Inspection
6.1.1 Alarm Inputs. Each active alarm input
must be wired to customer’s sensing device
that provides an opening or closing on alarm
condition. The terminals on the alarm system
for each alarm input are marked 1 and are
supplied via a pull-up resistor on each alarm
module point. This resistor is used in the V+
source to each field contact to reduce the
effect of large transients entering the alarm
chassis. Each alarm input module is provided
with a separate terminal 1. However, it is
common practice to run one common wire
from terminal 1 to many field contacts to
reduce the number of field wires required.
When using common wiring, it is important to
jumper together terminal 1 of the respective
alarm cabinet modules to provide the correct
amount of current source to the field contact.
The return wire from the field contact is wired
to terminal 2 for each respective alarm mod-
ule. Since the alarm system provides the
power to the field contacts, it is important to
verify that no other voltage source appears
on either terminal 1 or terminal 2.
Note: On alarm systems where the alarm
inputs are supplied from transistor switch out-
puts, the V- of both systems has to be com-
mon. If the system under test has this fea-
ture, it must be verified by reviewing the elec-
trical drawing, particularly the alarm module
schematic.
In general, the solid state alarm system is a
floating system. The V+ and V- should be
verified as ungrounded.
6.1.2 Push-button Wiring. Verify that the
push-button wires are correctly wired to all of
the push buttons, including the push-button
contacts. Refer to pages 13 through 20 for
outlined dimensions and rear terminal
4
arrangements. Insure that normally open con-
tacts are used. For example, if the wrong con-
tacts (normally closed) are used, this is the
same as having the operator pushing the push
button continuously, which obviously will dras-
tically affect the operation of the alarm system.
Alarm systems using multiple alarm cabinets
may use a common set of push buttons to con-
trol the total system. A detailed check for prop-
er installation is recommended, including diode
type isolation, if specified on the electrical
drawings.
6.1.3 Horn and Bell Wiring. Terminals H1, H2,
and CA use short circuit protected drivers to
drive associated relays and horns. The sug-
gested minimum turn-on current of con-
nected elements should be greater than 10
mA. The maximum horn current should not
exceed 500 mA. If electronic horns are used,
the horns can be directly connected to the
audible output terminals (H1, H2). Systems
using the conventional AC or DC horns and
bells, must use a horn relay with suitable con-
tact rating. On multiple alarm cabinet systems
where individual power input is preferred, a
horn relay must be used with each cabinet to
maintain electrical isolation.
6.1.4 Power Supply. Verify the correct polarity
of connection to the alarm systems. In the larg-
er system, it is important to verify the wire
sizes of the power leads to the alarm cabinets.
To protect the larger alarm chassis, it is com-
mon to provide more than one input to the cab-
inet in which each section is provided with a
separate filter, fuse and supply input terminals.
In systems with multiple supply input, it is nec-
essary for the customer to make V- connec-
tions common.
6.1.5 Normally Open/Normally Closed Field
Contacts. All alarm modules are equipped for
operation with normally open or normally
closed field contacts. This is accomplished by
using a jumper switch on each alarm module,
identified as NO and NC for the normally open
and normally closed position respectively.
When the complete system is in operation, the
field contact that opens with an alarm condition
is termed a “normally closed” alarm input; con-
versely, the field contact that closes with an
alarm condition is termed a “normally open”
alarm input.
6.1.6 Power Up. Carefully inspect the hookup
wiring to insure conformity with the furnished
schematic. Pay particular attention to power
source polarity and verify that terminal 3 is
CAUTION