6.4 Replacing the Battery
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions 167
Periodic Inspection &
Maintenance
6
6.4 Replacing the Battery
A battery for memory backup is provided in the controller.
When the battery voltage drops below 2.1 V, BAT (meaning low battery voltage) will be displayed on the digital operator,
and the LED indicator BAT on the control board will light up. When this happens, replace the battery.
We recommend replacing the battery every 5 years even if no alarm is detected. The battery replacement interval is
indicated on a dedicated nameplate on the controller.
Use battery model CR6L-CN014S.
Note: Do not turn off the control power with an alarm detected.
Failure to comply may result in loss of the data and the calendar settings stored in the backup memory.
If the control power is turned on when the battery voltage is less than 2.1 V, the backup data will be automatically cleared.
◆ Battery Replacement Procedure
WARNING! Electrical Shock Hazard. Do not allow unqualified personnel to perform work on the drive. Failure to comply could result
in death or serious injury. The drive should be installed, wired, repaired, inspected, and have its parts replaced, by
someone with a thorough knowledge of drive installation, adjustment and repair.
NOTICE: Equipment Hazard. Observe proper electrostatic discharge procedures (ESD) when replacing electrical components.
Incorrect handling could result in ESD damage to the drive circuitry.
NOTICE: Be careful not to short-circuit the battery connector when removing or mounting the battery or cleaning the connector.
If the connector is short-circuited, backup data may be lost.
Note: Replace the battery while the control power is being supplied.
If the control power has been shut off, replace the battery within one hour. The data is backed up by the built-in capacitor for this
time even if there is no battery.
If the control power is off for more than an hour, the backup data may be corrupted. In this case, turn on the control power with
the battery removed to clear the backup data and then set the battery.
Replace the battery by using the following procedure.
1.
Shut off the main circuit power and wait at least 15 minutes.
2. Remove the cover from the controller.
3. Remove the battery connector (CN24).
Note: Clean the battery connector with alcohol or equivalent if there is dust or oil on the connector.
4. Remove the battery from the battery holder.
5. Mount a new battery in the battery holder. Take care to ensure that the cable is not trapped.
6. Confirm the polarities and connect the battery to the connector (CN24).
7. Check that the battery alarm LED indicator has gone off.
8. Add the date for when the battery should be replaced next to the battery label.
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