Printronix PrintCart - Manual (Page 25)

PrintCart Operating Duration
25
Figure 13. Discharged Battery, Operating on Inverter
NOTE: When the battery is discharged, the alarm timer activates (flashing
red gas gauge) and the battery operates on inverter.
An illuminated Fault mode LED indicates that either the charger or the inverter
are not operating correctly. A fault will not prevent the cart from operating in
Line Power mode but the cart will not operate correctly on battery power. Stop
operation and report the problem to supervisors and maintenance personnel
for corrective action.
Implement the following restrictions to protect the batteries:
• Battery discharge is limited to 70% (as low as 30% state of charge).
When the SoC reaches the discharge trigger at 40% (2 red) a
warning timer starts and the state of charge indicator flashes slowly.
The warning timer default is 60 minutes during which the cart will
operate.
When the warning timer expires, the shutdown timer starts. The state
of charge indicator begins flashing more rapidly and an audible beep
sounds. The shutdown timer default is 10 minutes during which the
cart should no longer be used and should be plugged in as soon as
possible. Failure to begin charging prior to expiration of the shutdown
timer will result in a cutoff of all power to the cart equipment.
• A minimum amount of battery recharge must occur prior to permitting the
cart to return to cordless operation.
If the battery discharge trigger is activated, that is an indicator that the
discharge was significant. The recharge that follows must restore
approximately half the charge before the cart can be used in cordless
mode again.
Power shutdown control is achieved through the warning and
shutdown timers. Once activated, the timers can only be stopped by
plugging in the cart. A stopped timer will restart any time the cart is
unplugged provided that the charge level has not been raised enough
to be reset. The reset level for the 120V cart is 60% (2 red and 1
yellow). The reset level for the 230V cart is 75% (2 red and 2 yellow).
The SoC indicator continues to flash during charging to indicate that
the discharge floor was reached and the timers have yet to be reset.
Line Powered
Mode
Battery Indicator
(discharged battery,
flashing red gas gauge)
Fault Mode