Securitron BPS-12-15, BPS-12-3, BPS-12-3-M1, BPS-12-45, BPS-12-6 Installation Instructions
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SECURITRON POWER SUPPLIES
MODELS: BPS-12-3, 4.5. 6, 9 AND 15; BPS-24-2, 3, 4, 6 AND 10
OPERATION AND INSTALLATION INSTRUCTIONS
1. DESCRIPTION
These instructions cover 10 different models as shown above. The part number expresses first
the output voltage (12 or 24) and second the maximum output current capacity. For
example, a model BPS-24-6 can supply up to 6 amps at 24 volts. Securitron large power
supplies consist of a power module and CCS control board to which all installer connections are
made. The board accomplishes several functions. It provides terminals for line voltage input
and DC outputs on separate circuits, so that a number of devices can b e powered. Models BPS12-3, BPS-12-4.5, BPS-24-2 and BPS-24-3 are furnished wi th the CCS-4 control board with four
separate output circuits. The other larger units in the range are furnished with the CCS-8
control board with eight separate output circuits. Each control circuit has an individual slide
switch to turn it on and off and an LED to annunciate its status. The CCS control board also
provides LED indication showing that the power supply is on, emergen cy release terminals, line
voltage and DC fuses and sealed lead acid - gel cell battery charging capability. All power
supplies in the BPS series are Class 2 rated when installed following these instructions.
The models which incorporate the suffix “H” in the part number have no t been evaluated by UL.
These power supplies have only been evaluated by UL for use in the EXD-1 and EXD-1F FWAX
systems.
2. SAFETY
Two hazards are present in
the supply. Line voltage
input presents a high voltage
shock hazard and the
DC/battery output, represent
a high energy (current)
hazard. A shorted battery
can swiftly supply levels of
current sufficient to melt
wiring insulation and cause a
fire. To insure safety, note
first that the cover LED is on
at any time that the supply is
dangerous, which is either if
it is receiving line voltage or
if batteries are operating.
The supply enclosure must
only be opened by trained
service personnel when
the cover LED is on. Other
safety features include line voltage and DC fuses and the fact that the line voltage input
terminals are under a warning guard plate.
3. OPERATING CHARACTERISTICS
3.1 LINE VOLTAGE INPUT
110-120 VAC should be input to terminals "H", "N", "G", as shown in the drawing. This is fed to
the input of the power module through factory made connections. The line voltage current
drawn by the power supply module will be approximately half the DC output. For example, for a
4 amp power supply, the line voltage service should be able to supply at least 2 amps. Note: if
the suffix “H” appears in the part number (i.e. BPSH-24-4), the unit requires 220 VAC input.
Apart from this change, all other characteristics are the same.
© Copyright, 2011, all rights reserved PN# 500-10300
Page 1 Rev. D, 04/11
3.2 DC OUTPUT
The maximum DC output of the power supply is expressed by the final figure in the part
number. The BPS-24-3 can supply up to 3 amps; the BPS-12-6, up to 6 amps etc. However,
these power supplies are adjustable and the voltage level set affects the current output capacity.
When used with batteries, the power supplies must be set at 12. 5% over voltage (13.5 V for
12 volt supplies and 27 V for 24 volt supplies). This is the factory setting and if the voltage is
to be changed, use the potentiometer marked "V Adj" on the power supply module. The current
rating takes into account the possibility of the supplies operating at 12.5% over voltage.
Therefore any supply which is operated at its nominal voltage (12 or 24 v) can supply about
20% more than its rated current. Despite this, we strongly recommend that supplies be
operated substantially below their maximum output capability. Operating power supplies at
their maximum greatly increases the possibility of heat induced failu re. "Margin for error " is lost
and this is inappropriate for a security system. Power supplies should be run at no more
than two thirds of their maximum capacity for optimum reliability
3.3 EMERGENCY RELEASE TERMINALS
If the power module is operating or if bat teries are operatin g, the LED will illuminate . +V (12 or
24VDC depending on the model power supply) will then be on terminal F1. Connection must
then be made between terminals F1 and F2 before +V is routed to the " P" termina ls. Terminals
F1 and F2 therefore constitute an emergency release point. If desired, for instance, NC
contacts controlled by the user's fire alarm syst em can be connected across terminals F1 and F2
such that the connection between these terminals will be broken in the event of a fire. UL
listed auxiliary latching normally closed contacts from the fire alarm system should be
used. "Trouble" contacts must not be used. This will au tomat ically release al l the devices be in g
driven by the unit. If the emergency release terminals are not to be used in this way, a jump er
should be placed between them so that the board's output terminals will fun ction. Make sure
that the switching capability of any switch or relay contacts placed across F1 and F2
can handle the full output load of the power supply.
Terminal FA is a free parking terminal used only with Securitron’s Power Supply Monitor.
The PSM interconnects with the power supply and m onitors the continu ed corre ct b ehavior of t he
supply including voltage level and whether the batteries are functioning . The PSM signals any
problem including whenever the battery pack takes over the load. If you are using the PSM,
wiring with the FA terminal is shown in the manual.
3.4 OUTPUT TERMINALS
The CCS board has three types of output terminals. “P” terminals are on individual circuit
breakers and carry +12 or +24 volts on them (when the emergency release terminals are
closed). The “H” terminal carries the full +V output of the supply on a single terminal (when
F1 and F2 are closed). Use the “H” terminal for applications where the device being powered
requires more than 2 Amps of current. The Polyswitch circuit breakers cannot reliably supply
more than 2 Amps of current without tripping and you should never wire multiple “P”
terminals in parallel to supply increased current. This bypasses the safety role of the
Polyswitch breakers and also does not work very well. When two “P” terminals are wired in
parallel, current carrying capacity is not doubled. The current conducted through the two
terminals will not be identical so one switch will break first and then the second will immediately
trip. When “P” terminals are correctly used as isolated outputs, each is inherently current
limited to Class 2 standards. Always use the “H” terminal for applications requiring high
current. Finally, the “R” terminals are all for 0 volt DC negative return and are in common.
3.5 FUSING AND CIRCUIT POLYSWITCHES
An AC fuse, DC fuse and four or eight Polyswitches are present on the board. The AC fuse is
on the hot 120 VAC input and protects against an internal short in the power supply transformer.
A short in the DC load will not blow the AC fuse. The DC fuse protects the full DC output of the
supply prior to it being divided through the Polyswitches to the individual “P” outputs. The
Polyswitch is a special type of automatic circuit b reaker. If one of the Polyswitches receives an
overload, it will rapidly cut the current down to a small leakage current (about 100 mA) which
will allow the rest of the installation to continue to operate. Note that each “P” output
includes a slide switch and LED. The slide switch c an cut DC power to its respective output a nd
the LED monitors when the output is powered. In the event of one of the Polyswitches tripping,
the associated LED will go out. If all the LED’s go out, one of the fuses has tripped or the power
PN# 500-10300
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supply has gone into automatic shut off (discussed later). Always replace any blown fuse
with the same rated fuse.
FIG. 1: POWER SUPPLY WIRING WITH CCS-4 BOARD
BATTERY
PACK
(OPTIONAL)
+
RED
BLACK
B+B-
OPERATION OF AC AND DC
FUSES IS DESCRIBED IN
AC
SECTION 3.5
FUSE
HOT NEUT
115 VAC INPUT
H
TERMINALS R1-R4
COMMON NEGATIV E
DC RETURN (0 VOLT)
R1
R2
R3
R4
DC
FUSE
ON
OFF
N
GRND
G
CLASS 2 TERMINALS:
P1-P4 SUPPLY +V OUT.
EACH TERMINAL IS ON
A SEPARATE POLYSWITCH
WHICH IS APPROPRIATE
FOR INSTALLATIONS
WITH MULTIPLE LOADS
P1
P2
P3
P4
F1
FA
F2
H
FIRE ALARM
N.C. CONTACTS
OPEN WHEN
ALARM ACTIVE
"H" TERM IN AL IS SIN G L E , HIGHCURRENT OUTPUT (UPSTREAM
SLIDE SWITCHES POWER AND DE-POW ER EACH
"P" OUTPUT. LED'S SHOW OUTPUT STATUS
OF POLYSWITCHES)
The DC fuse should only trip if there is a short circuit in the supply itself (downstream short
circuits or overloads will trip individual Polyswitches). This could occu r if the F1-H termina l block
somehow contacts DC negative. Alternately, if you are not using the “P” terminals for
downstream wiring but are using the “H” terminal to operate an individual, high current,
downstream load, a short circuit or overload could trip the DC fuse.
Securitron’s power supply family contains an
additional safety feature which is automatic shut
off in the event of a DC short circuit or overload.
This is often called a “crowbar” circuit. When you
are using the power supply without batteries, a
DC short circuit will usually cause the power supply
to shut itself off rather than tripping any fuse or
Polyswitch. If batteries are implemented, however,
they will attempt to drive into the load as soon as
the short circuit or overload occurs and the fuses
and/or Polyswitches will trip to maintain safety.
If this happens there is a reset procedure. First, correct the overload condition. Next,
remove all current from the Polyswitch for a period of 10 seconds. You do this by
moving the associated slide switch to th e “off” position. Then wait 10 seconds, return the slide
switch to “on” and operation will return to normal. If you haven’t corrected the overload,
naturally the Polyswitch will trip again but you must always de-power and re-power the
Polyswitch to reset it.
The multiple safety features of these power supplies can be confusing so the following chart
provides summary information on operation of the safety features when the power supply is
used with and without batteries.
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AC FUSE DC FUSE POLYSWITCH AUTO SHUTOFF
WITHOUT
BATTERIES
WITH
BATTERIES
Will trip only if
internal
transformer
shorts (all LED’s
will be out)
Will trip only if
internal
transformer
shorts (all LED’s
will be out)
Generally will not
trip. Supply will
go into auto
shut-off in case
of overload (all
LED’s will be out)
Will trip if
terminal F1, F2
or H shorts to
negative or in
case of overload
when terminal H
is used as single
output (all LED’s
will be out)
Generally will not
trip. Supply will
go into auto shutoff in case of
overload* (all
LED’s will be out).
Will trip in the
event of individual
zone short or
overload
(individual zone
LED will be out)
Will generally occur
in the case of any
short or overload
(all LED’s will be
out)
Batteries drive into
short or overload
which trips another
safety feature
unless overload
current is less than
fuse or Polyswitch
rating.
A Polyswitch can individually trip in an overload condition w ithout batteries in the special
case where the overload current is greater than the Polyswitch trip current (2.5 Amps) but
less than the power supply output capacity. This is unusual. A pure short circuit is more
common and this will put the supply into Auto shut-off.
FIG. 2: POWER SUPPLY WIRING WITH CCS-8 BOARD
BATTERY
PACK
(OPTIONAL)
TERMINALS R1-R8
COMMON NEGATIVE
DC RETURN (0 VOLT)
CLASS 2 TERMINALS P1-P8
SUPPLY +V TO TH E TIMER.
EACH TERMINAL IS ON
A SEP ARA TE POLYSWITCH
WHICH IS APPROPRIATE
FOR INSTALLATIONS
WITH MULTIPLE TIMERS
+
RED
BLACK
B-
R1
R2
R3
R4
R5
R6
R7
R8
P1
P2
P3
P4
P5
P6
B+
DC
FUSE
ON
OFF
AC
FUSE
H
N
G
F1
FA
F2
H
HOT NEUT
115 VAC INPUT
GRND
FIRE ALARM
N.C. CONTACTS
OPEN WHE N
ALARM ACTIVE
P7
P8
SLIDE SWITCHES POWER AND DE-POWER EACH
"P" OUTPUT. LED'S SHOW OUTPUT STATUS
3.6 BATTERY CHARGING CAPABILITY
A resistor and diode are present on the CCS board which, together with the power supply,
constitute a battery charging circuit appropriate for standby rated sealed lead acid or gel cell
batteries. Dry cell or NICAD batteries must not be used. Batteries are an option. The
power supply can be used with or without them. The battery pack of th e appropriate voltage is
connected to the red and white flying leads following correct polarity. In the event of a line
voltage power failure, the batteries will automatically drive the load at the same DC voltage. If
PN# 500-10300
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the emergency release terminals are opened, battery power will, however, be blocked just as
normal power from the power supply would be.
The components utilized on the CCS board for battery charging function for battery packs up to
20 amp hours in capacity whether 12 or 24 volts. Larger battery packs can be handled but
Securitron must be informed so that the board may be modified. Consult (Figure 3) to calculate
the correct battery pack based on desired backup time and the current drawn by the loa d. For
proper battery charging, the power supply must be set at 27 volts for a 24 volt system,
and 13.5 volts for a 12 volt system. Securitron power supplies are factory se t to this level
and if it is not maintained, the batteries will not hold their full capacity, and may even be
damaged.
FIG 3: CHART TO DETERMINE SIZE OF BATTERY PACK
BACKUP TIME DESIRED
MIN 1 HR 2 HR
4 HR
UL STD.
8 HR 16 HR 24 HR 48 HR 72 HR
150 MA
300 MA
500 MA
1 A
2 A
3 A
4 A
5 A
7.5 A
4 AH
4 AH
4 AH
4 AH
4 AH
4 AH
4 AH
4 AH
4 AH
4 AH
4 AH
4 AH
4 AH 4 AH
4 AH 4 AH
4 AH
4 AH 4 AH
4 AH
8 AH
8 AH
12 AH
16 AH
8 AH
12 AH
16 AH
16 AH
20 AH
4 AH
4 AH
4 AH 4 AH
8 AH
12 AH
16 AH
20 AH
24 AH
36 AH
12 AH
20 AH
24 AH
32 AH
40 AH
60 AH
4 AH
4 AH
8 AH
12 AH
20 AH
28 AH
36 AH
44 AH
72 AH
4 AH
8 AH
12 AH
20 AH
36 AH
52 AH
72 AH
84 AH
130AH
8 AH 8 AH 12 AH
12 AH 16 AH
16 AH
24 AH
48 AH
72 AH
100AH
120AH
180AH
24 AH
48 AH
100AH
150AH
200AH
240AH
360AH
24 AH
72 AH
150AH
240AH
300AH
360AH
480AH
TOTAL CURRENT DRAWN
10 A
4 AH
20 AH
28 AH
48 AH
"MIN" TIME REFERS TO FACILITY USING A GENERATOR WHERE THE BATTERIES
ARE ONLY REQUIRED TO OPERATE THE SYSTEM FOR A FEW MINUTES
U.L. STANDARD REQUIRES 4 HOURS OF BATTERY OPERATION FOLLOWED BY
A 24 HOUR RECHARGE PERIOD AND THEN A SECOND 4 HOURS OF OPERATION
STANDARD SECURITRON POWER SUPPLI ES CA N ONLY CH ARGE UP TO A 20AH PACK.
IF A LARGER PACK IS CALLED FOR, THE FACTORY MUST BE ALLERTED TO SUPPLY
MODIFIED EQUIP M E NT. LARGE R PACK S ARE SHOW N IN ITALIC S IN THE CHART.
72 AH
100AH
180AH
240AH
480AH
720AH
36 AH
BATTERIES MUST BE SEALED LEAD ACID OR GEL CELL TYPES.
DRY CELLS WILL NOT RECHARGE AND WILL BE DAMAGED.
THIS CHART IS ONLY VALID IF BATTERIES ARE OPERATED
AT ROOM TEMPERATURE. IN A COLD ENVIRONMENT, CAPA CITY IS REDUCED.
BATTERIES SHOULD BE REPLACED AFTER 5 YEARS OF USE.
3.7 CODE APPROVED WIRING METHODS
Note that these units are Class 2 rated. This means that the individual DC outputs of the
supplies (on “P” terminals) are current limited and can pose neither a high voltage nor high
energy hazard outside of the enclosure. Electrical building codes in most jurisdictions permit
Class 2 wiring to be done “in the open” rather than in conduit. To maintain the Class 2
ratings on the “P” terminal outputs, never connect them together to obtain higher capacity.
If you require higher capacity use the “H” terminal but the “H” terminal is high current (not Class
2) and generally must be in conduit. The line voltage wiring coming into the unit also must
generally be in conduit as it poses a high voltage hazard. Be sure to check with your local
building department to make sure you are complying with applicable wiring codes before
installing these units.
4. SLAVE BOARD
Your power controller may include more than one CCS board. If so, the other boards will be
"slave" boards (part # CCB-8) whose only purpose is to provide eight additional "P”, and "R"
PN# 500-10300
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terminals. The boards will not be fully populated as the functions of AC input, battery charging,
emergency release and DC and AC fusing are only needed on the "master" board. The eight
additional Class 2 “P” terminals naturally constitute individual outputs protected by Polyswitches
and including zone LED’s and slide switches.
5. APPROVALS
All Securitron power supplies are tested by various agencies. Consult the label inside the supply
to be advised of current approval status.
6. MAGNACARE
LIMITED LIFETIME WARRANTY
Warranty information visit: www.securitron.com/en/site/securitron/About/MagnaCare-Warranty
PN# 500-10300
Page 6 Rev. D, 04/11
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