Battery Backup Version
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6. BATTERY BACKUP
VERSION
The battery backup version of the Model 214Di is designed to provide
power backup for the instrument if the supply has been interrupted. The
two lithium battery packs provide sufficient capacity to power the
instruments for up to 5 years and the operator is warned of a low power
condition by a message on the LCD display.
Note: No low battery warning will be displayed whilst there is external DC
power connected.
New batteries can be purchased via Contrec or our distributors and replaced
in the field without compromising the IS approvals.
There are two battery
packs in each instrument and care must be taken to replace only one pack at a
time so that there is always power connected to the memory.
Failure to do this
may result in loss of totals and preset value.
Note that only Contrec supplied batteries can be used for replacement in
Intrinsically Safe installations.
6.1 POWER INTERRUPTION
With the battery backup the Model 214Di has the ability to resume a batch if
the DC power is interrupted during a delivery. The 214Di will also totalise any
incoming pulses while power is unavailable.
If a batch is in progress and the external DC power is lost, both relay outputs
will be deactivated and the batch will be paused. The paused batch can only
be restarted when the DC power returns. However, the paused batch will be
terminated if the STOP key is pressed or if any totalising of pulses causes
the Batch Total to exceed the Preset Value.