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The following parameters are recorded during the battery test.

• Date and Time

From the above data, the Battery Open Circuit voltage, Battery resistance and Battery health are calculated. The data is then used to alter the battery time remaining algorithm.

Table 13. Battery Setup Data

Name Effects Description

Battery setup Charger ABM

Setup Bitword for the battery

Num cells String Calcs Number of cells in a single battery string Num Strings String Calcs Number of battery Strings

Battery DCOV Alarm Battery DCOV level Battery Equalize Charger

ABM

The level that is used to charge the batteries for the Battery Float Time, typically 48 hours

Battery Charge Charger ABM

The target voltage level at the beginning of an ABM charge cycle. This voltage is higher than Battery Equalize.

Battery is Charged Level Charger ABM Lower than Battery Charge, the level that ends regulation to Battery Charge.

Battery Float Level Charger Float

Level to regulate to, if ABM is disabled.

Battery Not Charged ABM ALARM

If the battery voltage falls below this level within the rest fail time, a “Check Battery” alarm is

annunciated, otherwise an ABM cycle is started.

Battery DCUV ABM

BTR ALARM

OPER.

This is the level that triggers the low Battery shutdown alarm. The system will shutdown in the programmed Battery DCUV Time

BATTERY DCUV Shutdown Time BTR OPER

Time in seconds before shutdown if the Battery voltage falls below Battery DCUV.

Absolute Battery DCUV OPER If the Battery Voltage falls below this level, the system is shutdown within a few seconds.

Battery DCUV for Logic Power Off OPER The power supply is disabled if the battery is sully the power and the battery voltage falls below this

Table 13. Battery Setup Data

Name Effects Description

level.

Battery temperature compensation Nothing Place holder for future applications

Battery Charge Current Limit Charger Level at which the battery charge current is limited.

Battery Charge Current Limit On Generator

Nothing Place holder for future applications

Support Test Time Batt Test Hours, When ABM enters float, the Battery test runs after float charging the Battery for this time.

Battery Charge Time Max ABM Hours, ABM must reach equalize voltage before this time or a “Check Battery” alarm is annunciated Battery Float Time ABM Hours, ABM float charges the battery for this time

during each ABM Charge cycle.

Battery rest fail Time ABM Hours, If the battery voltage falls below a preset level before this time, a “Check Battery” alarm is annunciated.

Max Rest Time ABM Hours, the time before an ABM charge cycle is initiated.

Maximum Battery Discharge Time

before Charge ABM Seconds, if the unit drops on battery for greater than this time an ABM charge cycle is initiated.

Battery Run Time at Battery Watts BTR Tenth minutes, Run Time at Battery Watts, typically full load run time

Battery Watts BTR Watts/cell, Battery watts at Battery run Time Battery open Cell Voltage Batt test

BTR

Volts/cell, used only until commission test occurs

Battery Start charge BTR Volts/cell, Used by BTR to determine the state of charge on the battery while resting or charging.

Battery resistance BTR Q15, milliohms, used by BTR until the commissioning test runs

Battery Test 1 voltage BTR Volts/cell, Used by BTR until the commissioning test runs.

Lin Pred BTR Not used

Lin PUV BTR Not Used

On Battery delay ALARM Delay time before queuing “ON Battery”

Battery Current Meter zero Meter Number of tenth amps below which the battery current meter is zeroed

Battery Discharge Coef. Battery Lifetime

Number of hours to subtract off of battery life when we drop on battery

Expected Battery Lifetime Battery

Lifetime Number of hours before replacement of battery is recommended.

Battery Lifetime left Battery Life

Time Number of hours the battery currently has left before replacement is needed

Battery Test 1 Power Batt Test BTR

Tenth KW, Total KW for Battery Test 1

Table 13. Battery Setup Data

Name Effects Description

Battery test 1 Time Batt test Seconds, Time Battery test 1 runs at Battery Test 1 Power

Battery Test 2 Power Batt Test Tenth KW, Total KW for Battery Test 2

Battery test 2 Time Batt Test Seconds, Time Battery test 2 runs at Battery Test 2 Power

Battery Test Min Voltage Batt Test If the battery voltage falls below this level during battery test, the test is aborted and a “Check Battery” alarm is annunciated.

4.9.4.1 User Interface to Battery Test Information 4.9.4.2 Battery Test Queue Printing

The battery test queue can be viewed in TERMINAL mode by entering “ESC B”

at any serial port.

The commissioning test and the contents of the battery test log are printed. The information provided by the printout is shown below:

• Battery Test Number

• Date and Time of the battery test

• If the test failed, the reason Battery Test Status

• Test 1 results, voltage per cell and power

• Test 2 results, voltage per cell and power

• Calculated open circuit voltage

• Calculated Battery Resistance in Milliohms V/P not V^2/P

• Calculated Battery Health (percentage health)

4.9.4.3 Battery Test Information via XCP

The Battery Test information is transmitted in the XCP Battery Test data block.

4.10 I/O BOARD (PCB)

Reference Documents: PW9355 1024055 I/O Board Schematic, see the Prints chapter at the end of this document. For detailed descriptions of board components, refer the Chapter 8, Removal and Replacement.

Figure 27. PW 9355 I/O Board

4.10.1 Overview

The IO Board has many functions within the Electronics module. It provides input and output filtering (including EMI) for the system. AC and Battery

Voltage sensing is provided in many locations. Current sensing for the inverter, rectifier, and battery converter and load are contained here - along with level shifting for the control board. Fusing is provided for the inverter path only. In this topology the inverter is connected to the output by a contactor - which is contained on the IO Assembly. The IO Board feeds input mains to the Power Board and provides battery start capability. Single or dual feed mains input with a separate Rectifier contactor is contained here. Also, the balancer and battery relays are contained on this board. Battery start circuitry and AC Fan power to 3 of the fans is provided here.

It also contains an Auxiliary Power supply that is derived from mains (or battery) during startup and then runs from the positive rail. This A-aux supply powers the relays, control board, and the X-Slot, and it powers the IGBT gate drives and alarms circuitry. The control board interface is located on this board, a battery circuit breaker trip circuit/sensor, a manual bypass switch position sensor, and an input output circuit breaker trip. Finally it contains the rail cap pre-charge circuitry.