30 H-S81-HS Installation & Operation Manual — P/N LS10114-000HI-E:A 2/24/2015
Parts of the H-S81-HS System Power Supply Set
Technical Features
Internal Connections
2.1.4 S81-PU002 Power Supply Set
This power supply set is able to supply a maximum current of 32 amperes, duplicated to the load,
and to control and charge two 12 Volt batteries with maximum capacity of 120Ah. Battery maxi-
mum charge current is 6 amperes. Under normal operating conditions, a simplified test is carried
out every 30 seconds in order to check the proper presence of the batteries. A full test, instead, is
carried out every hour in order to check electrical connections and battery efficiency. During bat-
tery trickle charge, battery voltage is compensated automatically according to the temperature. In
case of mains voltage failure, batteries are automatically switched to the load without any interrup-
tions. Should the full charge stage exceed 24 hours, the power supply unit will signal a battery fault.
In case of primary power supply failure, the system will shut batteries down when the on-load volt-
age is lower than 18VDC in order to avoid damaging the batteries. The set features seven open col-
lector outputs for replicating the various types of faults to the alarm control panel, along with a
RS232 port for the connection to the configuration program Test-PUA009. Ho-swapping is possi-
ble for both the 4 AC/DC converters and the battery charger (Hot Plug).
• Input voltage 22-28 VDC
• Free-air operating temperature -5 °C - 50 °C
• Relative humidity 93% non-condensing
• Efficiency > 83%
• Protection class IP20
• Dimensions 200mm x 110mm x 60mm
• Flammability UL94V2
• Battery voltage 26.2 to 28.7 VDC, compensated automatically
• Battery current (1/2/4A) Adjustable through dip switch
• VBAT Ripple < 100mV pK-pK at maximum current
• Resistance to main voltage dips >=20mS at maximum current (with PU-A0005)
• Maximum battery circuit resistance 1.5 ohm
• Maximum battery capacity 65 Ah
• Maximum current to batteries Limited automatically
• Current to the load protected by 20A internal fuse
CONNECTION OF STATUS OPEN COLLECTOR OUTPUTS
Terminal block Terminal
Name Function
TB1
M1 PSU1 Fault Open collector output - power supply unit section fault
M2 PSU2 Fault Open collector output - battery charger section fault
M3 Charge Status Battery charge status output (energized during the full charge stage).
CONNECTION OF POWER SUPPLY UNIT STATUS INDICATION
Terminal block Terminal Name Function
TB2
M1 AND-Failure Input of voltage failure to all power supply sets
M2 OR-Failure Input of voltage failure to one power supply set
M3 -V Out M1 and M2 input common
CONNECTIONS TO THE BATTERIES AND TO THE LOAD
Terminal block Terminal Name Function
TB3
M1 - V. Bat Battery negative
M2 +V. Bat Battery positive
M3 - V. Load Negative of power supply to the Load
M4 +V. Load Positive of power supply to the Load