FIRE ALARM
ancillaries
Approved Document No. DFU0056230 Rev 6
WARNING: THIS PSU MUST BE INSTALLED AND MAINTAINED BY A SUITABLY SKILLED AND TECHNICALLY COMPETENT
PERSON. THIS PSU IS A PIECE OF CLASS 1 PERMANENTLY CONNECTED EQUIPMENT AND MUST BE RELIABLY EARTHED.
LED MUST EXTINGUISH
BEFORE SERVICE
BATTERY
FUSE (F2)
CONN3
CONN
7
0V
+V
Output
Red+ Black-
BATTERY
PL1
SW1
CONN4
PL3
PL2
CONN6
1
2
3
4
ON
Supply Output (CONN3)
24 Vd.c. nominal
0V
+V
Red Wire
Black Wire
Battery Connector (CONN7)
2 X 12 V, 17 AH
++
++
--
--
N
CONN1
L
THIS
WAY UP
Mains Input 230 V, 50/60 Hz, 0.8 A
L = Live, N = Neutral, = Earth
Terminate mains cable to CONN1.
PSU Earth Distribution Strap
DO NOT operate the PSU without first connecting
this strap to the base earth distribution post.
Exposed live parts under cable cover. Isolate
first before removing the small cable cover.
No user serviceable parts under cover.
HAZARDOUS VOLTAGES LED (Red Steady)
When lit red, hazardous voltages
are present under the cover.
1
2
3
4
ON
DIP SWITCH
THERM (PL3)
Battery Thermistor Connector.
Optional BF322 PSU Remote Battery Temp.
Sensor available at c-tec.com.
PL3
THER
M
CHARGE INHIBIT (CONN6)
Connect to 0 V to
inhibit battery charger.
CONFIG INP/OUT (CONN6)
Configurable Input/Output.
For OEM use. Do not connect.
General Fault Relay (CONN4)
1 A @ 30 Vd.c.
FAULT
COMM
FAULT
CLOSED
FAULT
OPEN
Fault Relay
Table 1 - PSU Status LED (Amber)
DIP S/W 1 = For OEM use.
OFF (DOWN) = Defaults.
DIP S/W
OFF (DOWN)
ON (UP)
2
3
4
Battery Resistance
Threshold 0.6 Ohm
Battery Resistance
#2
Threshold 1.5 Ohm
Battery Charge Rate
#2
0.4 A (7 Ah)
Battery Charge Rate
1 A (7 Ah to 17 Ah)
Battery Fitted
Battery Not Fitted
#2
Table 2 - DIP Switch Settings
7.5 A MINI
®
automotive
blade fuse
See Table 4 - Technical Specification
overleaf for further details
Incoming Mains Cable
This cable must be segregated from other cables and only
enter the panel through the top knockouts.
(Must be externally fused to ≤ 6 amps)
MAINS FUSE (F1)
T 2 A H 250V, 20 mm ceramic,
T=Time Delay, H=High Breaking Capacity
CONN6
CONN4
DISPL
AY
FLASHES
1
2
3
Mains Failure
Battery Voltage Low (≤ 23 V)
Battery Voltage Critical (≤ 22 V)
Charger Failure
Battery Not Fitted selected (indicates DIP S/W 4 position)
Battery Resistance Fault (level set by DIP S/W 2 position)
Output Over Voltage (> 30 V)
4
5
6
7
8
Not Used (previously used to indicate Charger Healthy)
LED STATUS (LED Off = Normal)
Battery Charger Inhibited (Warning only - Not a fault)
Steady
Scan the QR Code to
download your
documentation or visit
www.c-tec.com/info/psu-
resources.html)
The BF562-3 is a boxed mains input to regulated DC PSU, providing 3 A @ 24 Vd.c. nominal, designed for use with
fire and security systems. Combining the functions of a PSU, battery charging unit and battery monitoring unit, it is
fully compliant with EN 54-4 + A1 + A2 and has been built to comply electrically/environmentally with EN 50131-6
(Type A, up to Grade 4
#1
, Environmental Class II). The PSU is an approved product by BRE and VdS.
All wiring must be installed in accordance with all applicable national, regional or local standards. In the UK this is
BS 7671 (IET Wiring Regulations). Fuses must comply with IEC/EN 60127-2. See Fig.1 for PSU connection details.
1 of 2
BF562-3 (24 V DC, 3 A) Installation Instructions
EN 54-4, EN 50131-6 Boxed Power Supply Unit (PSU)
Fig.1 - PSU Layout & Connections
Over Current / Over Load Protection:
If the output load attempts to pull current in excess of the PSU rating, the PSU
will shut-down and attempt to auto-recover after approx. 10 seconds, and will continue to do so until the overload
is removed. If the PSU is subjected to a short circuit across the output terminals, the PSU may trip and require power
cycling to reset. Reset by switching off mains and disconnecting the batteries, then wait for the red ‘Hazardous Voltage
Present’ LED to extinguish before re-applying mains and batteries. Check the battery fuse (F2) has not operated.
WARNING: There is a risk of explosion if an incorrect battery type or size is used. Always dispose of used
batteries in accordance with the battery manufacturers instructions and local regulations. Batteries are heavy
and can produce dangerously high currents if shorted. Take care when handling and routing battery leads to
avoid damage. The batteries must be safely secured by the cable ties (supplied in the accessories).
Note: On a standard ‘as-supplied’ unit, DIP Switch 4 (‘Battery Not Fitted’) is OFF (DOWN) and a fault will occur on
initial power-up if fully charged batteries are NOT connected. See Table 2 - DIP Switch Settings (Fig.1).
2831
19
VdS
G220016
176p
Read these instructions before installation and operation
