OMRON S8BA Uninterruptible Power Supply (UPS)

DC input

Rated input voltage

24 VDC

Input
voltage
range

When standard
voltage sensitivity
is set

24 VDC±10%

When low voltage
sensitivity is set

24 VDC±12.5%

When high voltage
sensitivity is set

24 VDC±5%

Input
maximum
current

for rated input
voltage for rated
loads connected

5.9 A

11.7 A

17.5 A

23.3 A *5

Input terminal

Push-in terminal block

Input protection

Fuse (cannot be replaced by the customer)

Input protection capacity

10 A

15 A

30 A

DC output

Rated
current

(for rated output
voltage)

5 A

10 A

15 A

20 A *6

Switching time

Uninterrupted

Output
voltage

Normal operation

Output of input voltage as-is

Backup operation

24 V±5%

Output terminal

Push-in terminal block

Overload protection

Alarm display at a load level of 110% or over (normal operation)

Alarm display at a load level of 110% or over and output voltage drop
(backup operation)

Alarm display cancellation at a load equal to or below the rated
capacity (normal operation, backup operation)

Battery

Type

Lithium-ion battery

Rated voltage

14.4 VDC

Rated capacity

1600 mAh ×
1 parallel

1600 mAh ×
2 parallel

1600 mAh ×
3 parallel

1600 mAh ×
4 parallel

Expected battery life *1

2.5 years (50°C), 5 years (40°C), 10 years (25°C)

Replacement by user

Yes (Hot swapping)

Auto battery check function

Yes

Battery life counter function

Yes

Charging time

4 hours *7

Backup time (25°C, initial characteristics)

6 min. (120 W)

6 min. (240 W)

6 min. (360 W)

6 min. (480 W)

Environment

Operating ambient
temperature/humidity

0 to +55°C/10 to 90% (with no condensation)

Storage ambient
temperature/humidity

-20°to +55°C/10 to 90% (with no condensation)

Vibration resistance

JIS C 60068-2-6 compliant. 5 to 8.4 Hz amplitude: 3.5 mm, 8.4 to 150
Hz acceleration rate: 9.8 m/s² X, Y, and Z directions for 100 minutes
(Time coefficient: 10 minutes × coefficient factor 10 = total time 100
min.)

Shock resistance

JIS C 60068-2-27 compliant. 147 m/s², 3 times in X, Y, and Z
directions.

Structure

Dimensions (W × D × H mm)

94 × 100 ×
100

148 × 100 ×
100

270 × 100 × 100

Weight of unit

Approx. 0.8 kg

Approx. 1.3 kg

Approx. 2.0 kg

Approx. 2.3 kg

Cooling method

Natural cooling

Insulation
and
withstand
voltage

Withstand voltage

1,000 V 50/60 Hz AC between the DC external terminals and the GR
terminal for 1 minute at a leakage current of 10 mA max.

Insulation resistance

20 MΩ min. between the DC external terminals and the GR terminal
(at 500 VDC)

Compliance
to standard

Safety standard

UL508/CE/UKCA/C22.2 No.107.1-01

EMI

Radiated
disturbance
electromagnetic
field strength

EN61000-6-4/FCC/ICES/RCM/KC

Ship standard

LR/ABS/DNV/EN60945 *8

Internal power consumption (normal *2/
maximum *3)

7 W/22 W

11 W/41 W

14 W/60 W

18 W/80 W

Serial com-
munication

RS-232C (Interface terminal)

Yes (RJ45)

USB (interface terminal)

Yes (B connector)

I/O signal (Interface terminal)

Yes (RJ45)

Accessories

USB cable (1.5 m)

Accessory functions

Beeper setting; Auto restart setting; Auto test setting; Auto restart
mode setting; Input sensitivity setting; Remote ON/OFF signal logic
setting; Cold start setting; Battery life counter setting; Power switch
function setting; Maximum backup time setting; Startup battery level
setting; Backup stop (BS) signal delay time setting; Backup (BU)
signal delay time setting; and Contact signal I/O test