Manual

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Alpha Technologies Ltd. 034-136-C0 Rev B WC

3.9 Low Voltage Disconnect Operation

Whenever the system parameters require that the LVD be activated, a 60-second countdown and audible warning

will commence. When the countdown reaches zero, the LVD will be activated. During this countdown, an icon on

the GUI may be pressed to evoke a prompt to inhibit LVD controls – activated by entering the Supervisor

password. There is a 10-minute time-out for this. See also LVD Inhibit 6.7.2.

3.10 Signals Management

The CXC enables the Supervisor to view and edit a signal equation of the selected signal. The Supervisor may

also configure custom signals; properties may be modified or disabled as required. All signals in the system can

be selected for a signal equation builder making it possible to combine logic conditions and analog values to

generate an alarm.

The Supervisor can select which Temperature Sensor (including any smart peripheral temperature sensors) is

enabled for Battery Temp Sensor Signal.

3.11 Statistics and Historical Data

The CXC is capable of tracking several statistical parameters on a daily basis; e.g., analog statistics or triggered

items (listed below), such as, battery log and event log, see Data Logging (web interface only), Section 6.6.3.

Data is stored in local memory and may be accessed via a web interface. The logged data is comma-delimited

such that it can be automatically viewable in rows and columns in MS Excel. The data is stored on a first-in-first-

out basis.

3.11.1 Analog Statistics

All statistics, to a maximum of 90 records (one per day) contain a time stamp and date. Daily analog statistics

include the minimum, maximum and average of:

Load Voltage Load Current

Battery Voltage Battery Current

AC Mains Battery Temperature

Total Rectifier Current Average DC Voltage

Average AC Voltage Number of Acquired Rectifiers

Number of Sourcing Rectifiers Ten Custom Signals

3.11.2 Battery Log

A maximum of 40 records can be logged for battery statistics and events. The Battery Log contains the following:

Event Type Capacity Rating

Battery Test Start Time Depth of Discharge

Discharge Duration Time Capacity

Amp Hours Delivered Recharge Duration

Amp Hours Recharge Return Peukert Number

1-5 Max. Midpoint Deviation Discharge Data1

1-5 Max. Midpoint Deviation Recharge Data2

Battery Current/Average Battery Current Battery Temperature/Average Battery Temperature

Battery Voltage/Battery Test End Voltage Open Circuit Voltage

Battery Test Result

During a battery discharge, active battery log information is displayed in a row above the Battery Log. This

information is then no longer available after the battery has finished recharging.

The Battery Log also provides support for very slow discharges. This is accomplished by saving intermediate

battery log information in the event of controller power loss before battery recharge completes.

When a battery test (BT) is started by the remote BT feature, the battery log will show “Remote BT” in the Event

Type column.