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S8BA

Uninterruptible Power Supply (UPS)

S8BA

DC-DC type small UPS mounts on a DIN rail to provide an ideal countermeasure for momentary power losses and power failures in industrial computers (IPC) and controllers.

S8BA-LF Integrated battery type

Ratings, Characteristics, and Functions

Capacity 120 W 240 W 360 W 480 W *4
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/C22.2 No.107.1-01 / EAC
EMI Radiated
disturbance
electromagnetic
field strength
EN61000-6-4/FCC/ICES/RCM/KC
Ship standard LR/ABS/EN60945 *8/DNV GL
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

*1. An estimated value for standard mounting. Not a guaranteed value.
*2. Conditions: With rated loads connected, at a rated input voltage, and with the battery fully charged.
*3. Conditions: With rated loads connected, at a rated input voltage, and at the maximum battery charging current.
*4. 400 W for use as a UL compliant device.
*5. 20 A for use as a UL compliant device.
*6. 16.7 A for use as a UL compliant device.
*7. When using in an environment at a high temperature, charging may be paused by charging temperature protection,
     then the charging time will be longer than specified time.
     "CS" will be displayed when charging temperature protection is operated.
*8. For the S8BA-24D24D120LF, install all of the RSMN-2030, RSHN-2030, and RSEN-2030 EMC filters manufactured by
     TDK. For the S8BA-24D24D240LF, S8BA-24D24D360LF, or S8BA-24D24D480LF, install both the RSMN-2030 and
     RSHN-2030 or their equivalents. Install these filters in series to the cable connected to the DC input terminal block.
     When you do, do not connect anything to the GR terminal.
     The effectiveness of the noise filters may be affected by the installation environment. Be sure to check effectiveness
     before starting operation.

S8BA-SBF Separated battery type

Ratings, Characteristics, and Functions

Capacity 480 W 960 W
DC input Rated input voltage 24 VDC
Input voltage range 23 to 28 VDC
Input
maximum
current
for rated input voltage
for rated loads connected
21.5 A 43.5 A
Input terminal Push-in terminal block
Input protection Fuse (cannot be replaced by the customer)
Input protection capacity 30 A 60 A
DC output Rated
current
for rated output voltage 20 A 40 A
Switching time Uninterrupted
Output
voltage
Normal operation Input voltage through output
Backup operation 21 to 28 V (the voltage cannot be adjusted)
Output terminal Push-in terminal block
Overload
protection
Warning display
• UPS output will
continue through bypass
[during normal operation]
• UPS output will continue
through battery [during
backup operation]
101% or more
Output stopped by
overload protection
• Stop output [during
normal operation]
• The internal power
supply to the UPS will
stop after 10 sec. [during
backup operation]
111% or more
Warning display
cancellation (During
normal operation, during
backup operation)
93% or more
Battery unit Type Lithium-ion battery
Rated voltage 25.2 VDC
Rated capacity 3900 mAh 7800 mAh
Battery life expectancy *1 10 years (25°C), 6.7 years (35°C), 3.7 years (45°C),
1.9 years (55°C)
Replacement by user Yes (Hot swapping)
Battery Life Counter Function Yes
Charging time 8 hours (90%) *3
Backup time (25°C, initial
characteristics)
6 min. (constant power rated load)
The backup time can be set from the mode selection/
backup operation time selection switch, or the shutdown
software.
Environment Operating environment temperature/
humidity
0 to +55°C / 10 to 90%RH with no condensation
Storage environment temperature/
humidity
-20 to +55°C / 10 to 90%RH 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: 100 min.
(Sweep time: 10 min.×Sweep count 10 times=Total: 100
min.)
Shock resistance JIS C 60068-2-27 compliant: 147 m/s2 X, Y, and Z
directions three times
Structure Dimensions (W×H×D mm) *2 44 × 124 × 111.4 (UPS
control unit 20 A)
80 × 124 × 111.4 (battery
unit 20 A)
52 × 124 × 111.4 (UPS
control unit 40 A)
150 × 124 × 111.4 (battery
unit 40 A)
Weight Weight of control unit Approx. 0.6 kg Approx. 0.7 kg
Weight of battery unit Approx. 1.5 kg Approx. 2.5 kg
Cooling method Natural cooling
Dielectric
breakdown
voltage
Withstand voltage DC external terminals to casing: 510 V AC, 1 minute,
leakage current 5 mA max.
Insulation resistance DC external terminals to casing: 20 MΩ or more. (500 V
DC)
Standard
compliance
Safety standard UL508 / CE / C22.2 No. 107.1-01
EMI Radiation disturbance
field strength
EN61000-6-4 / FCC / ICES / RCM
Internal power consumption
(normal *4/maximum *5)
7 W / 29 W 15 W / 58 W
Serial com-
munication
RS-232C (Interface terminal) Yes (RJ45)
USB (Interface terminal)
I/O signal (Interface terminal) Yes (RJ45)
Accessories USB cable (2.2 m) (included with control unit)
Battery connection cable (included with battery unit)
Accessory functions Remote ON/OFF signal logic setting; Battery life counter
setting; Maximum backup time setting; Startup battery level
setting; Backup stop (BS) signal delay time setting; and
Backup (BU) signal delay time setting

*1. Guideline for a standard installation. Not a guaranteed value.
*2. Unit dimensions excluding the DIN rail stopper.
*3. When using in an environment at a high temperature, charging may be paused by charging temperature protection,
      then the charging time will be longer than specified time.
*4. Conditions: With rated loads connected, at a rated input voltage, and at a full battery charge.
*5. Conditions: With rated loads connected, at a rated input voltage and at maximum battery charging current.