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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
HE-PSU(4.0)
Power Supply &
Battery Charger
Installation,
Commissioning
& Operating Manual
Page 1 of 10 2-3-0-997/IS S 1/OCT07
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
CONTENTS
1. GENERAL........................................................................................................................2
2. POWER REQUIREMENTS .............................................................................................2
2.1 HE-PSU(4.0) Input/Output Electrical Ratings.............................................................2
2.2 Fuse Ratings..............................................................................................................3
2.3 Batteries.....................................................................................................................3
3. INSTALLATION...............................................................................................................3
3.1 Environmental Considerations....................................................................................3
3.2 Mounting ....................................................................................................................3
3.3 Connecting to the Input.............................................................................................. 4
3.4 Connecting to the Outputs..........................................................................................4
3.4.1 Load Connections (Terminal Block).....................................................................4
3.4.2 Load Connections (Ribbon Cable).......................................................................4
3.4.3 Battery Connections ............................................................................................ 5
4. COMMISSIONING...........................................................................................................6
5. MAINTENANCE...............................................................................................................6
6. MOUNTING.....................................................................................................................8
7. WIRING ...........................................................................................................................8
8. CABLE TERMINATION...................................................................................................9
9. OPERATING INSTRUCTIONS......................................................................................10
1. GENERAL
The HE-PSU(4.0) is a combined power supply and battery charger desi gned to be used for fire alarm control
and indicating equipment complying wit h EN54-2 and EN54-4.
2. POWER REQUIREMENTS
The HE-PSU(4.0) r equires a mains power supply of 230V AC. The maximum input curr ent is 2 Amps.
Mains frequency 50Hz.
2.1 HE-PSU(4.0) Input/Output Electrical Ratings
Input – 230V AC
Load output - 19V DC min (battery at minimum), 30 V DC max (mains on) max current 2.5 Amps + 1.5A
for batter y charging.
Maximum rippl e 800 millivolts
Battery charging output - 26.4 VDC (at 40°C) 28.9 V DC (at -5°C) 1. 5 Amps.
Fault signal s - switched negative open collector (with respect to load positive) current limi ted 100mA max.
Mains fail
Battery disconnected (Low battery shut off v oltage - 19 V (+/ - 1 volt) )
Battery low (Low battery warni ng voltage - 21 V (+/- 1 volt))
Earth fault
Charger fault (high output to battery)
Fail safe (any one of t he abov e)
These outputs are protected against short ci r c uits.
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
2.2 Fuse Ratings
Input fuse - T2A L250V. Replace only with a fuse of the same type.
Load fuse - self-resetting polyfuse 4 Amp rated. (Not replaceable).
RPSM fuse- Glass antisurge fuse 4A; BS4265
2.3 Batteries
Rechargeable, seal ed lead acid Yuasa NP or equivalent. Maximum capacity 17 Ah, minimum capacity 7Ah.
Maximum current consumption from battery – 4A.
Quiescent cur r ent in mains failure mode - 30 mA.
3. INSTALL ATION
This product shoul d be installed, commissioned and maintained by trained service personnel in accordanc e
with the following:
(i) IEE regulations for electrical equipm ent in buildings
(ii) Codes of practic e
Statutor y requirements
Any instructions specifically adv ised by the manufacturer
3.1 Environmental Considerations
The operati ng temper ature range should not exceed - 5°C t o +40° C (±2° ) .
Humidity lev els should not ex c eed 96% ( non- c ondensing).
3.2 Mounting
The HE-PSU(4.0) is supplied as an enclosure in portrait orientation with the terminal block to the left. The
requirement s of E N60950 r egar ding creepage, clearance, m ar king and segregation must be tak en into
considerati on and the power supply should remain accessible for fuse replacement and to access screw
terminal c onnec tions.
The equipment i s of Class1 construct ion so must be permanentl y and reliably connected to the fixed earth of
the installation.
The primary earth of the end use application must be perm anently marked with the protective earth symbol
(IEC415 No. 5017). A suitable primary disconnecting dev ice must be provided in the end use application.
Battery and load c onnec tions must be considered for connection to SELV (safety extr a low v oltage) ci r c uits
only.
The maximum leakage c ur r ent of the completed and installed equi pm ent must not exc eed 3.5mA..
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
3.3 Connecting to the Input
Do not connect a mains supply unless the supply voltage m atches that shown on the rating plate.
Pass the incoming liv e and neutral of the mains cable through the ferr ite core at the top of the enclosure
looping it back so that there are two turns through it.
Connect the Live and Neutral t o the cir cuit board as indicated on the PCB on the next page.
Connect earth to the eart h terminal at the top of the enclosure.
Note: A minimum c able size of 0.75mm must be used. Maximum cable size is 2.5mm².
Ensure that all wir es are fi tt ed into the terminals without any ex posed l engths or strands which may giv e rise
to exposure to elec trical shock.
This equipment is designed to be operated from 230V 50Hz m ains supplies and is of class 1 construction.
As such it must be connected to a protective earthing conductor in the fixed wiring of the install ation and a
readily accessible double pole disconnect dev ic e m eeting t he r equirements of EN60950/I E C950 whic h
disconnects live and neutral simultaneously shal l be incorporated in the fix ed wi ri ng as close to the unit as is
practical.
If the earth terminal is the primary earth of the end use application then apply the earth symbol ( IEC415
No.5017) next t o this terminal. Ensure that all screws in the earth terminal block (incl uding those that are not
used) are tightened dur ing installation.
3.4 Connecting to the Outputs
3.4.1 Load Connect ions (Terminal Block)
Four terminals are prov ided for connection of the load. Two + t erminals and two - terminals.
The load should be connec ted using wire rated for at least 4 Amps.
Care must be taken to connect the polarity of the load the correct way around, + on the PSU to + on the load
and - on the PSU to - on the load.
Note: Maximum cable size is 2.5mm
3.4.2 Load Connect ions (Ribbon Cable)
An alternative method of connecting to the power supply is via a 14-way ribbon cable.
A standard latc hing ri bbon c able header is provided on the board, whic h may be used to connect to the load,
and fault signal s, whic h ar e pr ov ided on the terminal block. (S ee below.)
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
3.4.3 Battery Connections
Batteries of even v er y small c apac ity are capable of delivering v er y high c urrents which can cause fire or
injury. Battery c onnec tions must therefore be done using extr em e c aution.
As supplied, the HE- PSU(4.0) has battery leads already wired to the battery terminals on the cir c uit board.
These leads are coloured r ed for + and black for - .
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
As this is a 24-Volt system, there will be two 12 volt batteri es which need t o be c onnec ted in series. This is
done using the jumper link pr ov ided.
To optimise the servi c e life of the batteries, the battery charger output voltage varies with temperature. To
enable optim um t em per ature c om pensation, the flying lead thermistor should be attached to one of t he
batteries.
4. COMMISSIONING
Once all connections have been made and checked for safety, switch on the mains power. The load should
now be supplied with power and the bat teries should be taking a charge.
Check that the load i s bei ng suppl ied by observing the power on lamp on the load (c ontrol and indicating
equipment). Remove the mains power and ensure that the bat teries continue to supply power to the load.
With the mains remov ed, a negat ive signal should appear at the terminal MF (mains failed) and the MF LED
should light af ter about 90 seconds. This can be checked by connect ing a voltmeter between load + and
termina l MF.
Switch the mains back on and disconnect the battery. The load should continue to operate and a negative
signal should appear at the terminal BD (battery disconnected) and the BD LED should light aft er about 30
seconds. Check this with a voltmeter between load + and the terminal BD.
Now connect the load + t erminal to earth using a piece of wire. Wit hin 30 seconds a negative should appear
at the terminal EF (eart h fault) and the EF LED should light.
Disconnect the load + from earth and connect the load - to earth. Within 30 seconds a negative should
appear at the terminal EF and the EF LED should light.
With the batter y di sconnected, measure the output v oltage f r om t he power supply battery terminal s wit h a
calibrated digital voltmeter. The volt age shoul d be within 0.2 Volts of the value indicat ed on the
voltage/tem per ature graph (see opposite page.).
This completes the basi c c ommissioning checks.
5. MA INTENANCE
THIS EQUIPMENT CONTAINS NO USER SERVICABLE PARTS
The power supply requires no maintenance; however, sealed lead acid batteries have a limited lifespan and
should be checked peri odically in accordance with the manufacturer’s recommendations.
It is advisable to check the battery charger output voltage once per year to check that the output has not
drifted.
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
To do this the batteries should be disconnected and the out put voltage measured with a calibrated digital
voltmeter. The volt age shoul d be within 0.2 volts of the indicated voltage on the voltage/temperature graph
below.
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
6. MOUNTING
The power supply should be mounted on a dry, flat surface.
Screws or bolts of a minimum of 5mm diameter must be used to mount the enclosure in all four mounting
positions. T he mounting method must be suitable to support 60Kg ( 3 times the weight of the unit with
maximum sized batter ies fitted).
It should be positi oned in an accessible positi on as agreed with the end user.
The power supply should not be m ounted in another enclosure or near sources of excessive heat.
Cables should be connected using suitable cabl e glands (see sect ion 8) fitted to the knoc k outs provided. If
additional cable entry points are required, all swarf and debris caused by drill ing of additional cable ent ri es
must be cleared bef or e power i s appli ed.
7. WIRING
The HE-PSU(4.0) power supply is capable of housing up to 17Ah sealed lead acid batteries.
To comply with the requir em ents of EN54-4 there must be two transmi ssion pat hs from the power supply to
the control panel i n or der that a short circuit in one transmi ssion pat h will enable the control panel to be
supplied with power from the other.
This is facilitated by the RPSM-1 PCB which is mounted in the enclosure. Individual fault outputs are
provided on the power supply. A common fault open collector output rated at 100 milliamps maxim um i s
provided on the RPSM- 1 boar d.
MAXIMUM CABLE RESIST AN C E
+
Power
Common fault
signal to control
panel
-
+
-
transmission
paths to remote
control panel
TO EARTH BLOCK ON
TOP ED GE OF
ENCLOSURE
FROM EARTH BLOCK ON
TOP EDGE OF
ENCLOSURE
LOOP INCOMING MAINS WIRES SUCH
THAT THEY PASS TWICE T HROUGH
CENTRE OF FERRITE CORE
0.5 OHMS PER CO RE
X2
+
SUPPLY
A
B
R1
-
X3
+
SUPPLY
-
FAULT
-VE
D6
D8
D7
D9
R4
4A
R2
F1 F2
4A
RL1
RL2
R3
FLT
FLT
A
B
LED1 LED2
F3
D5
D4
D3
D2
D1
( for internal use only. Not to be
extended beyond the enclosure
ISS.A
RPSM-1
X1
Individual fault signals
EARTH
FERRITE
LIVE
NEUTRAL
.
O
L
N
A
I
R
E
S
C
C
4
5
C
3
R
2
VDR
1
R
C
1
8
Z5
Z6
OPT
1
R
C26
6
R36
R38
R43
R42
R39
R44
R45
R40
R46
R41
R47
R48
R37
R50
R49
R51
R15
R54
C19
2
C
1
R
9
C15
+
R
7
R
8
REG
C18
2
C12
R57
R34
R52
C34
9
D
R29
R31
C35
R13
TR2
1
R
9
1
R
8
C23
5
R
8
2
R
6
3
C
0
2
C
8
5
6
R
+
R20
TR1
1
C
R16
R22
R25
R55
5
D
2
R
4
2
R
7
2
R
1
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
8. CABLE TERMINATION
All cable entri es to the enclosure must be via Pirelli AXT20SK Cable terminating kits or equivalent.
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Hochiki Europe (UK) Ltd – HE-PSU(4.0) Installation Manual
9. OPERATING INSTRUCTIONS
The HE-PSU(4.0) is i ntended for use only as Power Supply Equipment for 24V DC fir e detection and alarm
systems conforming to EN54-2 and EN54-4.
All mounting, installation, commissioning and maintenance should be carr ied out strictly in acc or danc e with
the instructions contained in the manual.
Under normal operating conditions, none of the LED indic ators should be lit and there should be no out put
on any of the fault out put t erminals.
Fault conditions are identified by the pri nted legends on the black ventilated c ov er of the PS U within the
enclosure and relate to the on-board LED indic ators.
The switched negative fault outputs may be used to operate 24VDC rated relays or indicator s up to the
current limit of 100 milliamps per output. The refer enc e v oltage f or the switc hed negative outputs is the load
positive.
Hochiki Europe (UK) Ltd
Grosvenor Road, Gillingham Business Park,
Gillingham, Kent, ME8 0SA, England
Telephone: +44(0)1634 260133 Facsimile: +44(0)1634 260132
Email: sales@hochikieurope.com
Web: www.ho c hi ki e u rop e .c om
Hochiki Europe (UK) Ltd. reserves the right to alter the specification of its products from time to time without notice. Although every
effort h as b een mad e to ensure the acc u racy of th e inf orm at i on c ont ained wit hin this doc ument it is not war r anted or repr es ented by
Hochiki Europe (UK) Ltd. to be a complete and up-to-date description. Please check our web site for the latest version of this
document.
Page 10 of 10 2-3-0-997/IS S 1/OCT07
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