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S8T-DCBU-01

DC Backup Block for S8TS

S8T-DCBU-01

DC Backup Block for S8TS Prevents 24-VDC Outages Due to Power Interruptions or Failures

Model S8T-DCBU-01
Input Voltage *1 24 to 28 VDC
Output
*2
Normal
operation
Voltage 24 VDC *3
Load variation influence *4 6% max.
Backup
operation
Voltage 21.0 to 27.4 VDC *5
Min. output
current *6
S82Y-BAT01 0.11 A
S82Y-BAT02 0.17 A
Backup time
(reference
value) *7
S82Y-BAT01 8 min/3.7 A (at 25°C, battery fully charged, start of battery
service life)
S82Y-BAT02 4 min/8.0 A (at 25°C, battery fully charged, start of battery
service life)
Charg-
ing
Method Stable voltage/current charging method
Charging voltage *8 27.4 V/26.2 V (typical)
Max. charging current 0.35 A (typical)
Overvoltage protection *8 Yes (30 V typical)
Addi-
tional
func-
tions
Protection
functions
Overdischarge protection *8 Yes (18.5 V typical)
Overload protection *8 Yes (5.7 A/11.7 A typical)
Battery misconnection
protection *8
Yes
Input
function
Backup ON/OFF input *8 Yes
Output
functions
Output indicator Yes (color: green)
Battery status indicator *8 Yes (color: red)
Battery status output *8 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 *4 Operating: Refer to the derating curve in Engineering Data.
(with no condensation or icing)
Storage: - 25 to 65°C
Ambient humidity Operating: 25% to 85%; Storage: 25% to 90%
Dielectric strength *4 *9 3.0 kVAC for 1 minute (between all S8TS-06024[] AC inputs,
and all S8T-DCBU-01 terminals/all S8TS-06024[] outputs;
detection current: 20 mA)
2.0 kVAC for 1 minute (between all S8TS-06024[] AC inputs
and PE terminal; detection current: 20 mA)
1.0 kVAC for 1 minute (between all S8T-DCBU-01 terminals/
all S8TS-06024[] outputs, and PE terminal; detection current:
20 mA)
Insulation resistance *4 100 MΩ min. (between all S8T-DCBU-01 terminals and all
S8TS-06024[] outputs, and between all S8TS-06024[] AC
inputs and PE terminal) at 500 VDC
Vibration resistance *4 *10 10 to 55 Hz, 0.375-mm single amplitude for 2 h each in X, Y,
and Z directions
Shock resistance *4 *10 150 m/s2 , 3 times each in ±X, ±Y, and ±Z directions
EMI *4 Conducted Emission Conforms to EN61204-3 EN55011 Class A and based on FCC
Class A
Radiated Emission Conforms to EN61204-3 EN55011 Class A
EMS *4 Conforms to EN61204-3 High severity levels
Approved
standards
UL: UL508 (Listing: Class 2: Per UL1310) *11, UL60950-1
cUL: CSA C22.2 No. 14 (Class 2: Per No.223) *11
cUR: No. 60950-1
EN/VDE EN50178 (=VDE0160), EN60950-1 (=VDE0805 Teil 1)
Size 120 × 120 × 43 mm
Weight 350 g

*1. Refer to Output Voltage Adjustment for S8TS-06024[] on Catalog.
*2. The output specifications are defined at power output terminals.
*3. Specified by performance of S8TS-06024[] Basic Block.
*4. Specified by S8TS-06024[] connection.
*5. The output voltage will be 21.0 V (min.) when switching to backup operation.
*6. The life of the battery will greatly reduced when operating below the minimum output. Design the loadcircuit so that
       at least the minimum output is maintained.
*7. Refer to Backup Time (Reference Value) on Catalog.
*8. Refer to Functions on Catalog for details.
*9. Set the detection current to 20 mA × N, where N is the number of S8TS-06024[] Basic Blocks connected.
*10. Be sure to mount End Plates (PFP-M) on both ends of the Power Supply.
*11. To ensure Class 2, take one of following measures.
         Note that the number of S8TS-06024[] to be connected to the S8T-DCBU-01 shall be one.
       • Connect S8T-DCBU-01 to S82Y-TS01 having its fuse replaced with an UL-Listed and DC rated 32 VDC min./3 A
           max. one.
       • Connect an UL-Listed and DC rated 32 VDC min./2.5 A max. fuse at the location shown in Fig.1.

S8T-DCBU-01 Specifications 2