Securitron BACS-24-10 - Manual (Page 2)

PN# 500-17100
Page 2 Rev. D, 06/11
The “DC” fuse protects the full low voltage AC output of the supply prior to it being divided
through the Polyswitches to the individual “P” outputs. This fuse is “mis-labeled” because the
same circuit board is used in Securitron’s DC battery charging supplies. The Polyswitch is a
special type of automatic circuit breaker. 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 can cut power to its respective output and 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. Always replace any
blown fuse with the same rated fuse.
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 occur if the F1-H terminal block
somehow contacts the AC return (R terminals). 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.
When an individual Polyswitch trips, there is a reset procedure. First, correct the overload
condition. Next, all current must be removed from the Polyswitch for a period of 10
seconds. You do this by simply moving the associated slide switch to the “off” position. Then,
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.
FIG. 1: POWER SUPPLY WIRING WITH CCS-8 BOARD
R2
R1
F1
FA
R8
R7
R6
R5
COMMON LOW
VOLTAGE AC RETURN
HO
T
N
E
U
T
G
R
N
D
1
1
5 VAC
IN
P
U
T
H
N
G
TERMINALS R1-R8
TERMINALS P1-P8
SUPPLY ONE LEG OF
LOW VOLTAGE AC OUTPUT
WHICH IS APPROPRIATE
FOR INSTALLATIONS
WITH MULTIPLE LOADS
N.C. CONTACTS
CAN PROVIDE
CENTRAL RELEASE
ON SEPARATE POLYSWITCHES F2
AC
FUSE
H
DC
FUSE
R4
R3
ON
OF
F
SLIDE SWITCHES POWER AND DE-POWER EACH
"P" OUTPUT. LED'S SHOW OUTPUT STATUS
P2
P1
P8
P7
P6
P5
P4
P3
H TERMINAL IS FOR SINGLE
HIGH CURRENT OUTPUT
UPSTREAM OF POLYSWITCHES
OPERATION OF AC AND "DC"
FUSES IS DESCRIBED IN
SECTION 3.4
4. SLAVE BOARD
Your power supply may include more than one CCS-8 board. If so, the other boards will be CCB
type "slave" boards whose only purpose is to provide eight additional "P" and "R" terminals. The
boards will not be fully populated as the functions of AC input, emergency release and “DC” and
AC fusing are only needed on the "master" board. The eight additional “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  LIFETIME REPLACEMENT WARRANTY
For warranty information visit: www.securitron.com/en/site/securitron/About/MagnaCare-Warranty/