Douglas Battery LEGACY DL Series User manual

LEGACY and
LEGACY GOLD
DL/DLG SERIES
Ferroresonant
Industrial Battery Charger
Installation and Operating Instructions
DOUGLAS BATTERY MANUFACTURING COMPANY
500 BATTERY DRIVE
WINSTON-SALEM, NORTH CAROLINA 27107
FM1219 REV F, 1/07

1
TABLE OF CONTENTS
PAGE
2 SECTION 1: SAFETY INSTRUCTIONS
3 SECTION 2: RECEIPT AND INSPECTION OF THE CHARGER
3 SECTION 3: DESCRIPTION OF OPERATION
3 SECTION 4: CONTROL FEATURES
6 SECTION 5: INSTALLATION
7 SECTION 6: OPERATING PROCEDURE
11 SECTION 7: CHARGER CABINETS
12 SECTION 8: MAINTENANCE (Input Voltage Changeover)
18 SECTION 9: TROUBLESHOOTING GUIDE
21 SECTION 10: SCHEMATIC DIAGRAMS

2
IMPORTANT SAFETY INSTRUCTIONS
INSTRUCTIONS IMPORTANTES CONCERNANT LA SECURITE
*********************************************************************
1. SAVE THESE INSTRUCTIONS. THIS MANUAL CONTAINS IMPORTANT SAFETY AND
OPERATING INSTRUCTIONS.
CONSERVER CES INSTRUCTIONS. CE MANUEL CONTIENT DES INSTRUCTIONS IMPORTANTES
CONCERNANT LA SECURITE ET LE FONCTIONNEMENT.
*********************************************************************
2. WORKING IN THE VICINITY OF A LEAD-ACID BATTERY IS DANGEROUS. BATTERIES
GENERATE EXPLOSIVE GASSES DURING NORMAL BATTERY OPERATION. FOR THIS REASON
IT IS OF THE UTMOST IMPORTANCE THAT EACH TIME BEFORE USING YOUR CHARGER, YOU
READ AND FOLLOW THE INSTRUCTIONS PROVIDED EXACTLY.
IL EST DANGEREUX DE TRAVAILLER A PROXIMITE D'UNE BATTERIE AU PLOMB. LES
BATTERIES PRODUISENT DES GAS EXPLOSIFS EN SERVICE NORMAL. AUSSI EST-IL
IMPORTANT DE TOUJOURS RELIRE LES INSTRUCTIONS AVANT D'UTILISER LE CHARGEUR
ET DE LES SUIVRE A LA LETTRE.
*********************************************************************
3. TO REDUCE RISK OF BATTERY EXPLOSION, FOLLOW THESE INSTRUCTIONS AND THOSE
ON THE BATTERY.
POUR REDUIRE LE RISQUE D`EXPLOSION, LIRE CES INSTRUCTIONS ET CELLES QUI
FIGURENT SUR LA BATTERIE.
*********************************************************************
4. NEVER SMOKE OR ALLOW AN OPEN SPARK OR FLAME IN THE VICINITY OF THE
BATTERY OR ENGINE.
NE JAMAIS FUMER PRES DE LA BATTERIE OU DU MOTEUR ET EVITER TOUTE ETINCELLE
OU FLAMME NUE A PROXIMITE DE CES DERNIERS.
*********************************************************************
5. USE CHARGER FOR CHARGING A LEAD-ACID BATTERY ONLY. IT IS NOT INTENDED
TO SUPPLY POWER TO AN EXTRA LOW-VOLTAGE ELECTRICAL SYSTEM OR TO CHARGE
DRY-CELL BATTERIES. CHARGING DRY-CELL BATTERIES MAY CAUSE THEM TO BURST AND
CAUSE INJURY TO PERSONS AND DAMAGE TO PROPERTY.
UTILISER LE CHARGEUR POUR CHARGER UNE BATTERIE AU PLOMB UNIQUEMENT. CE
CHARGEUR N`EST PAS CONCU POUR ALIMENTER UN RESEAU ELECTRIQUE TRES BASSE
TENSION NI POUR CHARGER DES PILES SECHES. LE FAIT D`UTILISER LE CHARGEUR
POUR CHARGER DES PILES SECHES POURRAIT ENTRAINER L'ECLATEMENT DES PILES ET
CAUSER DES BLESSURES OU DES COMMAGES.
**********************************************************************
6. NEVER CHARGE A FROZEN BATTERY.
NE JAMAIS CHARGER UNE BATTERIE GELEE.
*********************************************************************
7. DO NOT OPERATE CHARGER IN A CLOSED-IN AREA OR RESTRICT VENTILATION IN
ANY WAY.
NE PAS FAIRE FONCTIONNER LE CHARGEUR DANS UN ESPACE CLOS ET/OU NE PAS GENER
LA VENTILATION.
*********************************************************************
8. DANGER: RISK OF ELECTRICAL SHOCK. DO NOT TOUCH UNINSULATED PORTION OF
OUTPUT CONNECTOR OR UNINSULATED BATTERY TERMINAL.
DANGER: RISQUE DE CHOCS ELECTRIQUES. NE PAS TOUCHER LES PARTIES NON ISOLEES
DU CONNECTEUR DE SORTIE OU LES BORNES NON ISOLEES DE L'ACCUMULATEUR.
*********************************************************************
9. CAUTION: DISCONNECT SUPPLY BEFORE CHANGING FUSE OR SERVICING CHARGER.
ATTENTION: COUPER L'ALIMENTATION AVANT DE REMPLACER LES FUSIBLES.
*********************************************************************

3
SECTION 2
RECEIPT AND INSPECTION
Upon receipt of the Battery Charger the information on the shipping carton
should be checked against your order. Any discrepancies should be reported
to the nearest authorized representative.
Whenever possible, move the charger to the installation site before
uncrating. All chargers can be handled with a lift truck by inserting the
forks under the bottom of the charger.
Remove the carton and inspect the charger for damage. If there is any
damage, save the carton for inspection and notify the carrier immediately.
Check the nameplate & labels against your order & specifications. Any
discrepancies should be reported immediately to the nearest authorized
representative.
SECTION 3
DESCRIPTION OF OPERATION
LEGACY AND LEGACY GOLD Industrial Battery Chargers are full wave, silicon
rectified, ferroresonant chargers.
Charging current is regulated by the ferroresonant transformer(s). The
transformers allow the battery to determine its own charge rate with respect
to its state of discharge.
A solid state, pre-programmed microcomputer provides total control of
charge termination, preventing both undercharging and overcharging. The
microcomputer incorporates built in fault detection to ensure correct
battery connection and smooth operation. The charge is terminated
automatically when the control determines that the battery is fully charged
based on dv/dt – di/dt.
SECTION 4
CONTROL FEATURES
4.1) Automatic five-second delayed start upon connection of a proper sized,
good battery.
4.2) Battery voltage sensing determines if there is a proper sized battery
connected to the charger. This prevents charging if there is a bad battery,
no battery connected, bad battery to charger connection or battery voltage
and charger mismatch.
4.3) Battery voltage and current are continuously monitored and controlled.
4.4) Automatic dv/dt-di/dt charge termination. (Voltage slope detection is
current compensated.)
4.5) Negative battery slope termination to prevent overcharge/thermal
runaway.

4
4.6) Automatic 12-hour "REFRESH" charge adds a top off charge to a fully
charged battery. The charger will start a “refresh” charge 12 hours after a
normal charge complete has been reached, assuming that the battery was not
disconnected during that time. The charger will automatically start
charging the battery and will charge until dv/dt-di/dt is reached. (DLG
only – Automatic REFRESH may be disabled by removing R35 from the control
board assembly)
4.7) Automatic Shutdown Lockout will not allow a charge to start after a
manual or problem shutdown occurs. Automatic Shutdown Lockout is cleared
after the "Shutdown" battery is disconnected. This allows a charge to begin
upon connection of a good, proper sized battery.
4.8) Manual STOP switch - Will stop the charger from charging. The display
will indicate “OFF” until the battery is disconnected. When pressed with no
battery connected, displays the delay start setting. When pressed during
watering mode (LEGACY GOLD only), will terminate watering but allow
refreshes if battery remains connected.
4.9) One to nine hours programmable delayed start thumbwheel switch. This
rotary switch can be set from 0 to 9 hours to delay the start of charge.
4.10) Optional Automatic Equalization cycle every 5th cycle. This option can
be enabled by DIPswitch (DLG) or removal of W1 (DL). For a charge cycle to
be counted, the battery must be on charge at less than 80% for 1 hour or
more from start of charge.
4.11) Equalize switch (LEGACY GOLD ONLY)- The switch when depressed will
turn on and off the three-hour additional manual equalizing charge. When
the equalize function is turned on, an “E” will be displayed in the left
most digit of the display. The “E” will flash during the actual equalize
charge cycle (manual and automatic). If auto-equalize has been selected,
pressing this switch prior to connecting the battery will allow the number
of charge cycles before auto-equalize cycle to be displayed.
4.12) Automatic shutdown occurs for any of five failure conditions. The
SHUTDOWN LED will be flashing.
a) Fault code “Lo U” - Low volts per cell - the battery voltage is less
than 1.7 vpc. The charger will not be “locked off”. The charger will
automatically start charging when the battery voltage is greater than
1.7 vpc.
b) Fault code “HI U”-High volts per cell – the battery voltage is greater
than 2.8 vpc.
c) Fault code “dISC”- Battery disconnected from charger during charge
d) Fault code “dur” - Charge time duration exceeded - backup timer
ri h h rate” chargeexpired du ng “ ig
e) Fault code “Lo I”- Low charging current - charging current less than
approximately 3 amps.

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4.13) LED Indicators
1. “CHARGING” - charger is charging the battery
2. “80%” - the battery voltage is greater than 2.37 vpc.
3. “CHARGE COMPLETE” - the charge cycle has been terminated normally.
-If flashing (1/2 second on every 4 sec.), the charger is set to
equalize at the end of the charge cycle. See section 6.7.
-If flashing on and off each second with the CHARGING and 80% LED’s lit
continuously then the charger is in the refresh mode.
4. “SHUTDOWN” - the unit has shut down for a fault; see section 4.12.
4.14) LED TEST button- All LED’s and display segments will illuminate when
this button is pressed.
4.15) Display mode switch:(LEGACY GOLD ONLY)
1. Press once to display AMP-HRS RETURNED
2. Press twice to display TOTAL CHARGE TIME
3. Press three times to display average BATTERY VOLTAGE/CELL The display
will show the above function for approximately 10 seconds and then
return to display charge current or the sequencing dash.
4.16) DIGITAL DISPLAY Readout will display the following information:
1. Charging current
2. Fault codes
3. Delay start time
4. Equalize mode
5. Amp-Hours returned for this charge cycle. (LEGACY GOLD ONLY)
6. Charging time - the length of time the charger was charging. (LEGACY
GOLD ONLY)
7. Volts per Cell - the average battery cell voltage. (LEGACY GOLD ONLY)
8. Cool-down time – the amount of time since the charger stopped charging.
(LEGACY GOLD ONLY)
9. Watering cycle (LEGACY GOLD ONLY)
4.17) A Watering Signal is provided at connector pin P3-3 (LEGACY GOLD ONLY)
This low current signal is normally logic level ‘lo’ and goes ‘hi’ at End
of every Charge cycle (watering mode). When in the watering mode the
signal pulses on for 15 sec. and off for 15 sec. for a total of 20
repetitions OR on continuously for 5 min (DIP Sw. selectable). To prevent
over-watering, this signal will not occur if the charge reaches 80% in
less than 5 min. from start of charging. This signal is meant to
interface with an external circuit for operating a watering valve. During
watering the display shows ‘H2O’.
Without a battery connected, pressing the Equalize Switch will display the
number of cycles remaining before the next auto-equalize. If Equalize
Charge is selected, watering occurs immediately after the Equalize cycle.

6
SECTION 5
INSTALLATION
5.1) PHYSICAL LOCATION:
Charging areas should be clean and dry. The temperature of the charging
room should be between 32°F (0°C) and 77°F (25°C), with occasional and brief
periods of ambient temperature as high as 104°F (40°C). Combustible
materials, open flames and smoking should not be permitted near or in the
charging area.
********************************* WARNING ********************************
A BATTERY ON CHARGE WILL EMIT EXPLOSIVE GAS. VENTILATE THE CHARGING AREA
TO PREVENT GAS ACCUMULATION.
****************************************************************************
5.2) MOUNTING:
The LEGACY AND LEGACY GOLD charger cabinets must be mounted on a surface
constructed from non-combustible material, such as stone, brick, concrete or
metal. Mounting holes are provided in the frame for securing the charger.
Most chargers can be stacked up to three high. Contact the nearest
authorized representative for specific instructions, if stacking is
necessary.
5.3) INPUT POWER CONNECTION:
THE LEGACY and LEGACY GOLD chargers are shipped from the factory connected
for the input voltage specified on your purchase order. A "STOP" label,
located inside the door, indicates the factory set input voltage.
If the charger is to be used at a different AC voltage than is presently
set for, the charger may be adjusted to operate for the different AC
service. Refer to SECTION 8.2.1 CHANGING THE AC INPUT LINE VOLTAGE.
********************************* WARNING ********************************
VERIFY THE AC ELECTRICAL SERVICE IS DISCONNECTED AT THE SOURCE BEFORE
ATTEMPTING TO CONNECT AC POWER TO THE CHARGER.
****************************************************************************
The AC input terminals are identified by a red on white AC INPUT sticker
located on the base near the fuse block. The AC input cable is to be
connected to the proper AC INPUT terminals within the charger cabinet.
The fuse block’s input terminals are rated for 14 awg to 2 awg wire. The
recommended torque is listed on the fuse block itself. The ground lug is
rated for 14 awg to 6 awg wire with a recommended torque of 12 in lbs.
A bare wire, green or green with yellow stripe grounding wire is to be
connected from the Grounding Terminal within the charger cabinet to the
system ground. The Grounding Terminal is identified by a green on white
Ground Terminal Label on the charger base. If a system ground is not
available, the charger frame must be connected to a driven ground rod in
accordance with National and Local electrical codes. Proper application and
tight terminal connections are important in avoiding future problems.

7
5.4) OUTPUT POWER CONNECTION:
The charger is normally furnished with an output charge plug or receptacle.
Verify that the connectors on both the battery and the charger are correct.
Verify that when connected, the positive polarity (red) of the charger is
connected to the positive terminal of the battery.
5.5) DIP SWITCH Settings (LEGACY GOLD ONLY):
The switch is located on the component side of the control board. The
factory default setting is all switches in the ON position except for
units designed for 50 Hz applications.
SWITCH NUMBER ON OFF
1. Single di/dt compensation Double di/dt compensation
2. Normal dv/dt termination Triple dv/dt termination
3. 60 Hz operation 50 Hz operation
4. Display cool-down time Do not display cool-down time
5. Auto-Equalize Disabled Auto-equalize enabled
6. Normal current display Double current display
7. Water signal is pulsed Water signal is continuous
8. 80% point – 2.37 vpc 80% point – 2.45 vpc
SECTION 6
OPERATING PROCEDURE
6.1) PRELIMINARY SETUP:
With all power removed from the charger set the DIPswitches per the
previous tables before attempting to charge a battery.
Once power has been applied to the charger, a "dash" will sequence across
the display on the front panel. This indicates the charger is in the "IDLE
MODE", awaiting a battery connection.
6.2) IMMEDIATE/DELAY START:
The control may be programmed to delay the start of the charge from one to
nine hours as well as an immediate start (5 second delay) of the charge upon
battery to charger connection. Note: all units are shipped from the factory
set for immediate start (0-hour delay).
If a power failure occurs, no damage will occur to the battery or the
charger. If a battery is still connected when power returns, the LEGACY AND
LEGACY GOLD will override any delayed start setting and initialize an
immediate start of the charge. Once the charge has been terminated, the
delay start will function normally thereafter.
6.2.1) Remove AC power from the charger.
6.2.2) Open the charger cabinet door.

8
6.2.3) Locate the DELAY START thumbwheel switch behind the front panel at
the bottom of the control board. Adjust the DELAY START thumbwheel switch
until the NUMBER INDICATOR on the switch yields the number of delay hours
desired.
6.2.4) Close and secure the cabinet door.
6.2.5) Apply AC power to the LEGACY AND LEGACY GOLD SERIES charger.
6.2.6) Without a battery connected the setting may be checked by pressing
and holding the stop button. When a good, proper sized battery is connected
to the LEGACY AND LEGACY GOLD SERIES charger, the display will indicate the
amount of time before the charge is initiated and the control will begin a
countdown to charge.
6.3) CHARGING THE BATTERY:
Compare the number of cells and amp-hour capacity of the battery to be
charged with the charger rating found on the charger nameplate. The number
of cells in the battery to be charged MUST match the nameplate data. The
amp-hour ratings should also match for timely charging of the battery. Once
the battery to be charged has been determined to match the charger, then
connect the battery to the charger. The control will measure the average
volts/cell of the connected battery.
6.3.1) If the control has verified the connection of a good battery
(between 1.7 and 2.8 volts/cell), the display will show a countdown to
charge initialization and the LED’s will be flashing. When the countdown
reaches zero, the control will start the charging operation.
6.3.2) If the average volts/cell reading is less than 1.7 volts, the
display shows “Lo U”, the charge will not begin and the red SHUTDOWN LED
will be flashing. If the battery voltage “floats” above 1.7 vpc the
charger will automatically begin a normal charge cycle.
6.3.3) If the average volts/cell is greater than 2.8 volts, the display
shows “HI U”, the red SHUTDOWN LED will turn on. Again, the charge will not
begin.
6.3.4) Once the charge begins, the display will count down from 9 to 0 then
show the output charging current in amperes. The green CHARGING LED will be
on.
6.4) TERMINATION OF CHARGE:
There are three ways in which the charge may be terminated. They are:
CHARGE COMPLETED TERMINATION via dv/dt - di/dt slope, MANUAL TERMINATION,
and PROBLEM SHUTDOWN TERMINATION.

9
6.4.1) CHARGE COMPLETED TERMINATION occurs when a battery reaches full
charge. The LEGACY AND LEGACY GOLD control monitors the battery charge
characteristics. The control utilizes di/dt current compensation to obtain
an accurate battery voltage charging slope, dv/dt measurement. Once the
control has verified that the battery charge slope has reached the
predetermined value for full charge, the charge is terminated
automatically. Once the charge is completed and terminated, the CHARGE
COMPLETED LED will turn on, and the display will be in the IDLE MODE. The
controller will display the battery cool-down time on the LEGACY GOLD units
only.
6.4.2) MANUAL TERMINATION, while charging, is accomplished by pressing the
STOP push-button switch located on the front panel.
To remove a charging battery from the charger, it is important to press the
STOP push-button switch first before disconnecting the battery from the
charger. Failure to do this may damage the charger.
When the charge has been terminated due to MANUAL TERMINATION, the red
SHUTDOWN LED will be on continuously (until the battery is removed). The
display will show “OFF”.
6.4.3) PROBLEM SHUTDOWN
Each of the PROBLEM SHUTDOWN terminations are indicated by a flashing red
SHUTDOWN LED and a FAULT code (section 4.12). After the battery is removed,
the red SHUTDOWN LED will remain flashing for one hour. The display
indicator will remain on until the battery is disconnected from the LEGACY
AND LEGACY GOLD SERIES charger.
6.5) REFRESH CHARGE:
When a battery remains connected to the charger for 12 hours after the
charge has been completed, the control will restart another charge cycle.
The charge rate of the battery will be monitored with dv/dt-di/dt
termination occurring typically within 35 minutes. When the charger is in
REFRESH mode, the charge amps will be displayed, the CHARGING LED and 80%
CHARGE LED will be on, and the CHARGE COMPLETE LED will be blinking.
A two-day weekend will have from three to five REFRESH cycles.
Automatic REFRESH may be disabled by removing R35 from the control board
assembly.
6.6) LED TEST: (LEGACY GOLD ONLY)
The LED TEST button may be pushed to illuminate all LED’s and display
segments, to ensure that all are functional.