Troubleshooting - Omron S8T-DCBU-01 Manual

Troubleshooting

This page lists the errors that may occur when the S8T-DCBU-01 is used, along with their probable causes and remedies.
Check the relevant item.
When Probable cause
Installation S8T-DCBU-01 cannot be
connected.
When checking The S8T-DCBU-01 output
the performances indicator does not light in
Refer to operation check procedure,
Operation Check step 2.
on page 7 for
details.
The connected S8TS-
06024@ does not operate in
operation check procedure,
step 2.
The battery status indicator
is lit even 10 seconds or
more after the power is
turned ON in operation
check procedure, step 3.
The backup operation is not
performed in operation
check procedure, step 5.
Description
The Bus Line Connector is provided with a
selector for preventing misconnection of 12 V
and 5 V specification S8TS units. For this
reason, connection is not successful if different
specification units are installed.
The S8T-DCBU-01 operates by the output of
the S8TS-06024@. A probable cause is that the
Bus Line Connector is not connected as the
input voltage is connected by the Bus Line
Connector (provided).
A probable cause is that the S8T-DCBU-01 is
connected between S8TS-06024@ Basic
Blocks.
A probable cause is that the battery was
connected with the + and − polarities reversed.
A probable cause is that the battery voltage falls
below about 22.5 V. (A probable cause is
battery discharge during long-term storage.)
A probable cause is that the backup ON/OFF
input is open.
A probable cause is that the overcurrent
protection function of the connected S8TS-
06024@ is active.
A probable cause is that the overcurrent
protection function selector switch on the S8T-
DCBU-01 is set low.
A probable cause is that the output voltage
adjustment trimmer of the connected S8TS-
06024@ is set lower than the factory set
voltage.
A probable cause is that inrush current during
backup operation caused the fuse on the
battery to blow.
DC Backup Block for S8TS
Remedies
Set the selector on the Bus Line Connector
(provided) to 24 V.
Refer to S8T-BUS03 on page 6 for details.
Connect the S8T-DCBU-01 to S8TS-06024@
using the Bus Line Connector (provided).
Refer to Basic Configuration on page 2 for
details.
The S8T-BUS03 Bus Line Connector for
connecting the S8T-DCBU-01 is not connected
to the AC power line. Connect the S8T-DCBU-
01 to the left or right end of S8TS-06024@ Basic
Blocks.
Connect the battery correctly.
Refer to Protection Against Erroneous Battery
Connection on page 8 for details.
Charge the battery before use.
Refer to Battery Status Indication and Battery
Status Output on page 8 for details.
Short the backup ON/OFF input. (Before
shipment, the backup ON/OFF input is
shorted.)
Refer to Backup ON/OFF Input Function on
page 8 for details.
As energy is consumed by S8T-DCBU-01, the
total output capacity of the number of
connected S8TS-06024@s cannot be obtained.
Connect one more S8TS-06024@ Basic Block.
Refer to the Derating Curve on page 9 for
details.
When three or more S8TS-06024@ Basic
Blocks are connected, set the overcurrent
protection function selector switch to 11.7 A
(typical). (The default setting is 5.7 A (typical).)
Refer to Overcurrent Protection Operating Point
Selector on page 7 for details.
The S8T-DCBU-01 detects drops in the output
voltage of the S8TS-06024@ and switches over
to backup operation. Adjust the output voltage
adjustment trimmer on the S8TS-06024@ so
that the output in a no-load state is 24.5 V or
more.
Refer to Output Voltage Adjustment for S8TS-
06024@ on page 5 for details.
Select a fuse taking the inrush current when
backup operation is switched to into
consideration. The recommended S82Y-TS01
Battery Holder is selected taking this inrush
current into consideration.
Refer to Battery Holder S82Y-TS01 on page 6
for details.
S8T-DCBU-01
15