S8T-BUS03 Omron, S8T-BUS03 Datasheet - Page 9

• Manufacturer Part Number: S8T-BUS03
• Description: CONNECTOR DC LINE BUS
• Manufacturer: Omron
• Series: S8TSr

Specifications of S8T-BUS03

• Accessory Type: Bus Line Connectors
• For Use With/related Products: S8TS Power Supplies
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: S8TBUS03

■ Battery Replacement
Sealed lead-acid batteries have a limited service life.
Fire may be caused in the worst case if the batteries are used
beyond their time for replacement. Replace batteries periodically to
avoid the worst case by referring to the following replacement proce-
dure.
Note: 1. Battery deterioration accelerates when its service life limit draws near.
1. Replacement Guideline
Replace the battery using the following table as a guideline:
Note: The conditions in the table above is estimated as: charged at
2. Measuring Backup Time
The backup time can be measured by the procedure below. If 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
time has fallen below the half or less of initial value.
Note: 1. Make sure that at least 48 hours have elapsed since the previous backup
(1) Turn the AC power OFF and back up the S8T-DCBU-01.
(2) Measure the time that the battery status output relay turns to
(3) When the battery status output relay turns LOW ((4)-(5): ON),
Operation
mode output
Battery
status output
LC-R122R2@@
LC-R123R4@@
LC-P122R2@@
LC-P123R4@@
Output voltage of the
S8TS-06024@
Output voltage of the
S8T-DCBU-01
Battery connection
terminal voltage
LOW ((4)-(5): ON) after the operation mode output relay is
backed up ((1)-(2): ON). (This is the backup time.)
turn the AC power ON.
Battery
2. The battery replacement timing assumes the battery has reached half its
3. The life varies according to the storage and operating environment, output
4. Follow procedures specified by voluntary or regulatory regulations when
5. Do not replace the battery while power is being supplied. If the battery is
27.4 V, discharged with 8 A (for LC-@123R4@@), 3.7 A (LC-
@122R2@@), backup operation once a month bases.
2. Measure the backup time after making sure that no problems will occur as
AC input
original capacity.
wattage, and the frequency of backup operation.
disposing of or recycling batteries.
replaced while power is being supplied, the incorrect battery connection
protection will not operate even if the battery is connected with the polarity
reversed. The S8T-DCBU-01 will be damaged and the Battery Holder fuse
will blow.
operation, and that the battery is correctly connected, and then measure
the backup time.
a result of stopping the power supply.
Backup
((1)-(2))
Normal
((3)-(2))
LOW
((4)-(5))
OK
((6)-(5))
20 °C
30 °C
40 °C
20 °C
30 °C
40 °C
temperature
Ambient
Backup time
2 to 3 years
1 to 1.5 years
0.5 to 0.75 years 0.5 year
4 to 6 years
2 to 3 years
1 to 2 years
Life of battery
22.5 V (typical)
2 years
1 years
4 years
2 years
1 year
Approximate
replacement
interval
Periodic Inspection of the Battery
We recommend periodically inspecting the battery as follows:
• Check the battery voltage. (In a 27.4 V series connection, make
• Check battery wiring and connections. (Check the batteries and
• Make sure that backup operation is performed normally in a
Note: Check the backup operation after making sure that no
sure that each battery is charged to 13.7 V.)
S8T-DCBU-01 connections for loose screws.)
simulated power failure state.
problems will occur as a result of stopping the power supply.
S8T-DCBU-01
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