DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126 Issue 4
June 1999
Maintenance Object Repair Procedures
9-1312POWER
9
POWER

Battery and Charger for AC-Powered Systems

DEFINITY Systems support two d ifferent cabinet types: multic arrier and single
carrier. Single carrier cab inets are used only for EPNs. Both cabinet typ es may
be powered by either AC or DC external power source. Environmental
maintenance differs acc ording to cab inet type and external p ower supply.
AC-powered Multi-Carrier Cabinets c an be equip ped with recharg eable batteries
that provide backup power during short power outages. Battery backup is
optional on cabinets p owered by an Uninterrup tible Power Supply (UPS), and is
required on those that are not. DC-powered c abinets and single- carrier cabinets
do not have battery b ackup, and this MO is not val id for those cabinets.
The battery backup for the J58890CH unit consists of one batter y assembly and
charger. The battery b ackup for the J58890CE unit consists of three 48V
batteries and a battery charger. Each cab inet so equipped has its own
independent b attery backup unit. When p ower to the cabinet is interrupted , a
warning alarm is logg ed against AC-POWER and the system draws power from
the backup b atteries. This is known as Nominal Power Holdover (NPH). If power
is restored before the NPH time expires, the alarm is resolved . If power does not
return, error logs are saved to the Mass Storag e System. The nominal power
holdover provided is as follows:
When AC power is restored after an outage, the batter y charger fully recharg es
the batteries within 30 hours.
In a multi-carrier cabinet system, the B attery & Battery Charger maintenance
object represents the b attery charger and the battery which are located in the
MO Name (in
Alarm Log) Alarm
Level Initial Command to
Run1
1.
UU
is the cabinet number indicated in the PORT field from the Alarm or Error Log.
Full Name of MO
POWER MINOR test environment
UU
Battery and Battery Charger
PPN Cabinet:
All carriers 10 seconds
Simplex control carrier 10 minutes
Duplicated c ontrol carriers 5 minutes
EPN cabinet:
All carriers 15 seconds
Expansion control carrier 10 minutes