Riello Sentinel Dual SDH 1500 User Manual

•  Sentinel Dual can be installed as a tower 

or in 19” rack cabinets, by simply removing 
and rotating the display panel

•  Low noise (<40 dBA): can be installed 

in any environment thanks to its high 
frequency switching inverter and PWM 
load-dependent digitally controlled fan.

•  Operation guaranteed up to 40°C (the 

components are designed for high 
temperatures and are thus subject to less 
stress at normal temperatures)

•  On Sentinel Dual models, the output 

sockets can be programmed to disconnect 
less critical loads during blackouts 
(EnergyShare function).

Sentinel Dual can be used in a tower or rack 
format, by simply turning the display and 
adding the supplied handles or optional 
runners.

The UPS is highly flexible and easy to 
configure. Programmable functions can 
be set via software or manually via the 
front display panel. Sentinel Dual can 
be configured in the following operating 
modes:
•  On Line, maximum load protection and 

output voltage waveform quality

•  ECO Mode, to increase efficiency (up 

to to 98%); allows you to select Line 
Interactive technology

•  Smart Active, the UPs automatically 

decides the operating mode based on the 
mains power quality

•  Emergency, the UPs can be selected to 

function only when the mains power 
supply fails (emergency only mode)

•  Frequency converter operation (50 or 60 

Hz).

Sentinel Dual offers maximum flexibility for 
integration with all types of communication 
systems.

•  Multi-platform communication for 

all operating systems and network 
environments: PowerShield

3

 supervision 

and shutdown software for Windows 
operating systems 8, 7, 2008, Vista, 2003, 
XP, Linux, Mac OS X, Sun Solaris, VMware 
ESX and other Unix operating systems.

•  UPS Tools configuration and customisation 

software supplied as standard

•  RS232 serial port and opto-isolated 

contacts

•  USB port
•  Slot for communications boards such as 

Modbus/Jbus, TCP/IP-SNMP and relay 
contacts.

This configuration ensures the operation of 
emergency systems that must be supplied 
in the event of a mains power failure, such 
as emergency lighting, fire detection/
extinguishing systems and alarms.
When the mains power supply fails, the 
inverter begins powering the loads with a 
progressive start-up (Soft Start) in order to 
prevent overload.
Sentinel Dual is compliant for installation 
in medium-voltage transformer rooms in 
accordance with applicable legislation, for 
the power supply with reserve charge of 
medium-voltage coils.

•  Even with non-linear loads (IT loads with a 

crest factor of up to 3:1)

•  High short circuit current on bypass
•  High overload capacity: 150% by inverter 

(even with mains failure)

•  Filtered, stabilised and reliable voltage 

(On-line double conversion technology 
(VFI compliant with EN62040-2 class 
C2) with filters for the suppression of 
atmospheric disturbances

•  Power factor correction: UPS input power 

factor close to 1 and sinusoidal current 
uptake.

•  Automatic and manual battery test
•  Batteries are user replaceable without 

switching off equipment and without 
interruption to the load (Hot Swap)

•  Unlimited extendible runtime using 

matching battery boxes.

Thanks to the use of high frequency 
components and load-based fan speed 
control,
the noise produced by the UPS is less than 
40 dB.

•  Output voltage can be selected via 

software (220-230-240 V)

•  Auto-restart when mains power is restored 

(programmable via software)

•  Stand-by on bypass: when the machine 

is switched off, it automatically goes into 
bypass and battery charge mode

•  Minimum load switch-off
•  Battery discharge warning
•  Start-up delay
•  Total microprocessor control
•  Automatic bypass without interruption
•  Status, measurements and alarms 

available on standard backlit display

•  UPS firmware updating via PC
•  Input protection via resettable thermal 

switch (versions up to

 1500VA)
•  Back-feed protection standard: to prevent 

energy from being fed back to the network

•  Manual switching to bypass.