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S8T-DCBU-01

S8T-DCBU-01

Specifications

Ratings/Characteristics/Functions

Note:

1.

Refer to 

Backup Time (Reference Value)

 on page 7 for details.

2.

Refer to 

Functions

 on page 8 for details.

3.

The output is specified at power output terminals.

4.

Specified by performance of S8TS-06024

†

 Basic Block.

5.

Specified by S8TS-06024

†

 connection.

6.

Specified by battery performance.

7.

Set the detection current to 20 mA 

×

 N when S8TS-06024

†

 Basic Block N Blocks are

connected.

8.

Be sure to mount End Plates (PFP-M) on both ends of the Power Supply.

9.

To meet UL508 requirements, insert a UL List and a 4.2 A fuse or equivalent circuit
breaker according to the conditions in the table below.

Item

Model

S8T-DCBU-01

Input

Voltage

24 to 28 VDC

Output 
(See 
note 3.)

Normal 
operation

Voltage

24 VDC (See note 4.)

Load variation 
influence (See note 5.)

6% max.

Backup 
operation

Voltage

21.0 to 27.4 VDC (See note 6.)

Min. output 
current

LC-P122R2J

0.11 A

LC-P123R4J

0.17 A

Backup time 
(reference 
value) 
(See note 1.)

LC-P122R2J

8 min/3.7 A (at 25ºC, battery fully charged, start of battery service life)

LC-P123R4J

4 min/8.0 A (at 25ºC, battery fully charged, start of battery service life)

Charging Method

Stable voltage/current charging method

Charge voltage (See note 2.)

27.4 V / 26.2 V (typical)

Max. charge current

0.35 A (typical)

Overvoltage protection (See note 2.)

Yes (30 V typical)

Additional 
functions

Protection 
functions

Overdischarge protection 
(See note 2.)

Yes (18.5 V typical)

Overcurrent protection 
(See note 2.)

Yes (5.7 A / 11.7 A typical)

Battery misconnection 
protection (See note 2.)

Yes

Input function

Backup ON/OFF input (See note 2.)

Yes

Output 
functions

Output indicator

Yes (color: green)

Battery status indicator (See note 2.)

Yes (color: red)

Battery status output (See note 2.)

Yes (relay: 24 VDC, 0.1 A)

Backup status indicator

Yes (color: red)

Operation mode output

Yes (relay: 24 VDC, 0.1 A)

Other

Ambient operating temperature 
(See note 5.)

Operating: Refer to the derating curve in 

Engineering Data

. (with no condensation or icing)

Storage: 

25 to 65ºC

Ambient humidity

Operating: 25% to 85%; Storage: 25% to 90%

Dielectric strength 
(See note 5. and 7.)

3.0 kVAC for 1 minute (between all S8TS-06024

†

 AC inputs, and between all 

S8T-DCBU-01 terminals and all S8TS-06024

†

 outputs; detection current: 20 mA)

2.0 kVAC for 1 minute (between all S8TS-06024

†

 AC inputs and GR terminals; 

detection current: 20 mA)
1.0 kVAC for 1 minute (between all S8T-DCBU-01 terminals and all S8TS-06024

†

 

outputs, and between GR terminals; detection current: 20 mA)

Insulation resistance (See note 5.)

100M

 min. (between all S8T-DCBU-01 terminals and all S8TS-06024

†

 outputs, 

and between all S8TS-06024

†

 AC inputs and GR terminals) at 500 VDC

Vibration resistance (See note 5. and 8.)

10 to 55 Hz, 0.375-mm single amplitude for 2 h each in X, Y, and Z directions

Shock resistance (See note 5. and 8.)

150 m/s

2

, 3 times each in ±X, ±Y, and ±Z directions

Electromagnetic interference (See note 5.)

Conforms to FCC Class A, EN50081-2/1993

EMI (See note 5.)

Conforms to EN50081-2/1993

Approved standards

UL: UL508 (Listing, Class 2: Per UL1310) (See note 9.), UL60950, UL1604 (Class I /Division 2)
cUL: CSA C22.2 No.14, No.60950, No.213 (Class I /Division 2)
EN/VDE: EN50178 (=VDE0160), EN60950 (=VDE0806)

Size

120 

×

 120 

×

 43 mm

Weight

350 g

Series connection with battery

Series connection with load

When one S8TS-06024

†

 Basic 

Block is used (Fig. 1)

No

Yes

When two or more S8TS-06024

†

 

Basic Blocks are used (Fig. 2)

Yes

Yes

S8T-
DCBU-
01

S8TS-
06024

†

L N

+V

-V

+V

-V

S8TS-
06024

†

L N

+V

-V

+V

-V

S8T-
DCBU-
01

S8TS-
06024

†

L N

+V

-V

(Fig. 1)

(Fig. 2)

Summary of Contents for S8T-DCBU-01

Page 1: ...n DC Backup Block See note 1 Note 1 One S8T BUS03 Connector is included as accessory 2 The output current can be selected by a switch Bus Line Connector Note One package contains 10 S8T BUS03 Connecto...

Page 2: ...on function selector switch Maximum number of S8TS 06024 Basic Blocks that can be linked Specified battery LC P122R2J LC P123R4J 5 7 A typical 2 Blocks 3 Blocks if N 1 redundant system is used Yes Yes...

Page 3: ...cause smoke or fire To prevent this place the battery on a resin battery tray 2 The inrush current shown below flows when backup operation is switched to The peak value and time of this inrush curren...

Page 4: ...Turn ON the power of battery holder 2 Turn ON the S8TS 06024 AC power line 3 Check the operating status described below after 10 seconds or more 4 Turn OFF the S8TS 06024 AC power line 5 Check that ba...

Page 5: ...s color green Battery status indicator See note 2 Yes color red Battery status output See note 2 Yes relay 24 VDC 0 1 A Backup status indicator Yes color red Operation mode output Yes relay 24 VDC 0 1...

Page 6: ...the number of connected S8TS 06024 s cannot be calculated Number of S8TS 06024 s S8TS 06024 rated input Derating curve Rated output power 1 200 to 240 VAC 1 36 W 100 to 120 VAC 2 1 1 100 to 120 VAC 2...

Page 7: ...backup time changes depending on the capacity of connected equipment ambient temperature and battery service life AC input Output voltage of the S8TS 06024 Output voltage of the S8T DCBU 01 Battery v...

Page 8: ...11 7 A typical The default setting is 5 7 A typical Overcurrent Protection Function Normal operation The overcurrent status is notified as follows LED lit Battery status indicator BAT LOW Red Relay Ba...

Page 9: ...ow When the battery is new first measure the initial backup time value Replace the battery if backup operation is not performed for the required backup time during periodic maintenance or the backup t...

Page 10: ...2 0 A Charging control circuit BAT BAT Battery Battery ON OFF input Connected to Bus Line Connector Connected to Bus Line Connector DC DC Overcurrent detection V V DC OUTPUT Operation mode output X Ba...

Page 11: ...25 114 185 7 82 Battery Holder S82Y TS01 4 5 15 25 25 10 10 1 000 500 25 25 15 5 35 0 3 7 3 0 15 27 0 15 1 Values in parentheses are for the PFP 50N Mounting Track material aluminum PFP 100N PFP 50N...

Page 12: ...NC 19 DC Output Terminal V 20 Track Stopper 21 Battery Connector Terminal Block 22 Connected to Bus Line Connector 23 DC Output Terminal Block 24 Terminal Block Cover 25 Charge Voltage Selector Switch...

Page 13: ...fire Avoid use in applications where inrush current on the load side frequently occurs Doing so may result in deterioration or damage of internal elements Use Check the battery handling precautions be...

Page 14: ...irect sunlight Do not use in locations where the ambient temperature exceeds the range of the derating curve Do not use in locations where the humidity is outside the range 25 to 85 or locations subje...

Page 15: ...that the battery voltage falls below about 22 5 V A probable cause is battery discharge during long term storage Charge the battery before use Refer to Battery Status Indicator Battery Status Output o...

Page 16: ...n Provide sufficient margin for the load capacity when using the S8T DCBU 01 Wheninspecting batteries Backup time is too short A probable cause is that the battery has reached the end of its service l...

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