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Buffer Block
Prevents Equipment Stoppage, Data Loss,and Other Problems Resulting from Momentary Power Failures
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Ratings and Specifications
| Model | S8T-DCBU-02 | ||
| Input | Voltage | 24 to 28 VDC | |
| Current | Charging | 0.4 A | |
| Standby | 0.18 A | ||
| Output (See note 1.) | Backup operation | Output voltage | For 24 V: 22.5 V typ., 22.0 V min. |
| For 28 V: 26.4 V typ., 25.8 V min. | |||
| Output current | 2.5 A | ||
| Backup time (See note 2.) | Time required until the voltage drops from the fully charged level down to 21.6 VDC 1,000 ms min. (for an output current of 1.2 A) 500 ms min. (for an output current of 2.5 A) | ||
| Additional functions | Output functions (See note 3.) | READY indicator | Yes (color: green) |
| READY output | Yes (relay: 24 VDC, 0.1 A max.) | ||
| Backup indictor | Yes (color: red) | ||
| Backup output | Yes (relay: 24 VDC, 0.1 A max.) | ||
| Overcurrent protection | Reverse-L dropping, automatic reset, overcurrent detection point: 5.8 to 6.8 A | ||
| Overvoltage protection | Yes | ||
| Parallel operation | Yes (Up to 4 Blocks) | ||
| Series operation | No | ||
| Other | Ambient operating temperature | Refer to the derating curve on Datasheet | |
| Storage temperature | -25 to 65°C | ||
| Ambient humidity | Operating: 25% to 85%; Storage: 25% to 90% | ||
| Dielectric strength (See note 4.) | 1.0 kVAC for 1 minute (between all DC connection terminals and PE terminals; Detection current: 20 mA) 500 VAC for 1 minute (between all DC connection terminals/PE terminals and all signal output terminals; detection current: 20 mA) | ||
| Insulation resistance | 100 MΩ min. (between all DC connection terminals and PE terminals) at 500 VDC | ||
| Vibration resistance (See notes 5 and 6.) | 10 to 55 Hz, 0.375-mm single amplitude for 2 h each in X, Y, and Z directions | ||
| Shock resistance (See notes 5 and 6.) | 150 m/s2, 3 times each in ±X, ±Y, and ±Z directions | ||
| EMI | Conducted Emission (See note 5.) | Conforms to EN61204-3 EN55011 Class B and based on FCC Class A | |
| Radiated Emission | Conforms to EN61204-3 EN55011 Class B | ||
| EMS | Conforms to EN61204-3 High severity levels | ||
| Approved standards | UL: cUL: cUR: EN/VDE: | UL508 (Listing; Class 2: Per UL1310) (See note 7.), UL60950-1, UL1604 (Listing; Class I/Division 2, Group A, B, C, D Hazardous Locations) CSA C22.2 No.14 (Class 2: Per No. 223) (See note 7.), No. 213 (Class I/Division 2, Group A, B, C, D Hazardous Locations) CSA No. 60950-1 EN50178 (= VDE0160), EN60950-1 (= VDE0805 Teil 1) | |
| SEMI | SEMI F47-0200 | ||
| Weight | 450 g max. | ||
Note:
1. The output characteristics are specified at the power output terminals.
2. Refer to Backup Time on datasheet for details.
3. Refer to Functions on datasheet for details.
4. If the number of S8T-DCBU-02 Buffer Blocks to be connected is "N", set the detection current to 20 mA × N.
5. Specified by S8TS-06024[] connection.
6. Be sure to mount an End Plate (PFP-M: Optional) on each end of the Buffer Block
7. To comply with Class 2, connect one S8TS-06024[] to one S8T-DCBU-02 Buffer Block.
Caution: In the interenst of product improvement, specifications are subject to change without notice.