Basler Electric DECS-400 - Manual (Page 164)

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DECS-400 Reboots Frequently
If a single input power source is used and the input power is less than the minimum as specified or
fluctuates below the minimum, the DECS-400 will reboot. Increase input power to meet or exceed the
specified requirements.
Backup Battery Replacement
An internal battery maintains real-time clock information when DECS-400 operating power is removed or
lost. The 3.6 volt, lithium, backup battery is secured in a holder located behind the front panel. The
backup battery should be replaced every five years by using the following procedure. In applications
where the battery is not desired, refer to the following instructions to remove the battery.
1. Obtain a replacement battery (Tadiran TL-2150/S, Basler Electric 37819, or equivalent).
2. Remove the DECS-400 from service by observing all applicable safety and shutdown procedures.
3. Loosen the captive Phillips screw in both latches, release each latch, and withdraw the draw-out
assembly from the case.
Caution
Observe all applicable electrostatic discharge (ESD) precautions when
handling the draw-out assembly.
4. Locate the battery holder and cover on the circuit board attached to the front panel. When facing the
back side of the front panel, the battery holder and cover are located near the upper, left-hand corner
of the circuit board.
5. Unclip and remove the cover from the battery holder.
6. Remove the battery from the battery holder. Note the orientation (polarity) of the battery. The new
battery must be installed with the same orientation.
Warning!
Do not short-circuit the battery, reverse the battery polarity, or attempt
to recharge the battery.
Note
The battery should be disposed of properly. Consult your local health,
solid waste disposal, or recycling agency for battery disposal
guidelines.
7. Install the new battery in the holder. Ensure that the polarity of the installed battery is correct (+ to +
and – to –).
8. Place the battery cover over the battery holder and snap it into place.
9. Insert the draw-out assembly into the case and secure it with the latches.
10. Place the DECS-400 back in service by observing all applicable safety and startup procedures.
Upgrading DECS-400 Firmware
Future enhancements to DECS-400 functionality may make a firmware upgrade desirable. Before
upgrading DECS-400 firmware, read the entire procedure and ensure that you have all files required to
Maintenance DECS-400