Alarms and Events

5.3Alarm Messages

 

 

Table 5: Possible Alarms

 

 

 

 

 

Alarm

Description

Action

 

Message

 

 

 

 

 

 

 

 

Battery MCB is

The battery breaker is open. If

At the battery breaker, set the

 

off

bypass voltage is within tolerance,

precharge/discharge switch to the

 

 

the unit transfers to static bypass

precharge position and hold it in

 

 

operation. If not, the unit transfers

this position until the LED turns

 

 

to stand-by and does not supply

off. Precharge is very important

 

 

output voltage.

to prevent damage to your

 

 

 

equipment. After precharge,

 

 

 

switch the battery breaker on.

 

 

 

 

 

Battery Monitor

The battery monitor test has found

Call APC Global Service to

 

Alarms

that the battery pack is near low

schedule battery maintenance.

 

 

runtime capacity or that the

 

 

 

 

battery pack may have a problem.

 

 

 

 

The unit’s status does not change,

 

 

 

 

but when the unit operates on

 

 

 

 

battery, runtime will be seriously

 

 

 

 

reduced.

 

 

 

 

 

 

 

Battery Monitor

The battery monitor test has found

See the “Parameter Settings”

 

Warning

that battery capacity is reduced

section of this User Guide to

 

 

(typically below 80%). The unit’s

display the parameters. Then,

 

 

status does not change, but the unit

change the “Battery monitor

 

 

will not be able to operate as long

reset” parameter to “ON.” This

 

 

on battery (it will have reduced

will clear the Battery Monitor

 

 

runtime).

Warning. Next, do a battery

 

 

 

monitor test (see the “Battery

 

 

 

Monitor Test” section). If the

 

 

 

alarm starts again, call APC

 

 

 

Global Service to schedule

 

 

 

battery maintenance.

 

 

 

 

 

Bypass freq. is

The bypass frequency is out of

Ask an electrician to make sure

 

out of tolerance

tolerance (too high, low, or

that the correct input frequency is

 

 

unstable). The unit may transfer to

being supplied to the UPS. If so,

 

 

battery or stand-by operation; it

and if this voltage is within the

 

 

cannot operate in static bypass.

range accepted by the UPS, call

 

 

 

APC Global Service.

 

 

 

 

 

Bypass is

The bypass voltage was

Ask an electrician to make sure

 

moment. out of

momentarily out of tolerance. The

that the correct input voltage is

 

tolerance (This

unit may transfer to battery or

being supplied to the UPS. If so,

 

alarm occurs

stand-by operation; it cannot

and if this voltage is within the

 

when there is a

operate in static bypass.

range accepted by the UPS, call

 

power outage)

 

APC Global Service.

 

 

 

 

 

Bypass is out of

The bypass voltage is out of

Ask an electrician to make sure

 

tolerance (This

tolerance (too high or low). The unit

that the correct input voltage is

 

alarm occurs

may transfer to battery or stand-by

being supplied to the UPS. If so,

 

when there is a

operation; it cannot operate in

call APC Global Service.

 

power outage)

static bypass.

 

 

990-1403

 

 

 

 

 

 

 

 

 

 

 

 

14

User Guide APC BC300 Series 40kW 208/450/480V UPS

 

Page 14
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APC BC300 manual Alarm Messages, Possible Alarms, Alarm Description Action Message