OMRON S8T-DCBU-02 dimension

last update: July 01, 2016

Buffer Block and Bus Line Connector

Buffer Block

S8T-DCBU-02

Bus Line Connector

S8T-BUS03

DIN Rails (Order Separately)

Mounting Rails (Material: Aluminum)

PFP-100N
PFP-50N

PFP-100N2

End Plate

PFP-M

last update: July 01, 2016

OMRON S8T-DCBU-02 catalog

• Catalog
• Manual
• CAD

English

Global Edition

For ordering in Singapore, please note some product models not sold in Singapore may be included in the following catalog(s) for our global customers.

*It is recommended to select “Save” from the right-click due to large size of catalog PDF data.

Catalog Name	Catalog Number [size]	Last Update
S8T-DCBU-02 Data Sheet	- [2491KB]	Jul 01, 201620160701	S8T-DCBU-02 Data Sheet

OMRON S8T-DCBU-02 specification

last update: April 04, 2013

Ratings/Characteristics

Model			S8T-DCBU-02
Input	Voltage		24 to 28 VDC
	Current	Charging	0.4 A
		Standby	0.18 A
Output *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 *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 *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 in Engineering Data. (with no condensation or icing)
	Storage temperature		-25 to 65°C
	Ambient humidity		Operating: 25% to 85%; Storage: 25% to 90%
	Dielectric strength *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 *5 *6		10 to 55 Hz, 0.375-mm single amplitude for 2 h each in X, Y, and Z directions
	Shock resistance *5 *6		150 m/s2, 3 times each in ±X, ±Y, and ±Z directions
	EMI	Conducted Emission *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:	UL508 (Listing; Class 2: Per UL1310) *7, UL60950-1
		cUL:	CSA C22.2 No.14 (Class 2: Per No. 223) *7
		cUR:	CSA No. 60950-1
		EN/VDE:	EN50178 (= VDE0160), EN60950-1 (= VDE0805 Teil 1)
	SEMI		SEMI F47-0200
	Weight		450 g max.

*1. The output characteristics are specified at the power output terminals.
*2. Refer to Backup Time on Catalog for details.
*3. Refer to Functions on Catalog 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: Order separately) on each end of the Buffer Block. Refer to DIN Rails on
       Catalog.
*7. To comply with Class 2, connect one S8TS-06024[] to one S8T-DCBU-02 Buffer Block.

Reference Value

Item	Value	Definition
Reliability (MTBF)	135,000 hrs min.	MTBF stands for Mean Time Between Failures, which is calculated according to the probability of accidental device failures, and indicates reliability of devices. Therefore, it does not necessarily represent a life of the product.
Life expectancy	10 yrs. min.	The life expectancy indicates average operating hours under the ambient temperature of 40°C and a load rate of 50%. Normally this is determined by the life expectancy of the built-in aluminum electrolytic capacitor.

last update: April 04, 2013

OMRON S8T-DCBU-02 lineup

last update: November 06, 2012

Buffer Block

Input voltage	Output voltage (during backup operation)	Output current	Model number
24 VDC (24 to 28 VDC)	22.5 V	2.5 A	S8T-DCBU-02

Options (Order Separately)

Bus Line Connector (Connects to Buffer Block)

Type	Number of Connectors	Model number
Connector with DC line connected.	1 Connector	S8T-BUS03
	10 Connectors *	S8T-BUS13

* One package contains 10 S8T-BUS03 Connectors.

last update: November 06, 2012

• NO. S8T-DCBU-02
• TYPE:Power Supplies Related equipment Copyright Statement
• DATE:2021-06-15
• Associated products:
  S8T-DCBU-01 DC Backup Block for S8TS/Features S8M Digital Multicircuit Protector/Features