Operating instructions | Chevrolet 2001 Offroad Vehicle User Manual

AT10.1 SERIES
Operating and Service Instructions
MICROPROCESSOR-CONTROLLED
FLOAT BATTERY CHARGER
SINGLE PHASE INPUT
GROUP I
(6 - 25 Adc)
HOW TO READ THE AT10.1 MODEL NUMBER
GROUP I RATINGS (6-25 Adc)
Your AT10.1 model number is coded to describe the options that are included. Please find the model
number on the data nameplate and write it in the spaces provided below. Then follow the chart to
determine the configuration of your battery charger.
AT10
A
A
B
C
DESCRIPTION
CODE
FEATURE
SERIES
AT10
AT10.1 CHARGER
NOMINAL
DC OUTPUT
VOLTAGE
B
NOMINAL
DC OUTPUT
CURRENT
C
D
FILTERING
AC INPUT
VOLTAGE
E
D
DESCRIPTION
012
12 Vdc
024
24 Vdc
048
48 Vdc
130
130 Vdc
006
6 Adc
012
12 Adc
016
16 Adc
020
20 Adc
025
25 Adc
U
UNFILTERED
F
FILTERED
E
ELIMINATOR
E
F
K
L
M
Q
CODE
K
AUX ALARM
RELAY BOARD
L
GROUND PAD
M
LIGHTNING
ARRESTOR
N
FUNGUS
PROOFING
F
INCLUDED
X
NOT INCLUDED
P
STATIC
PROOFING
S
INCLUDED
X
NOT INCLUDED
F
STANDARD
M
MEDIUM AIC
H
HIGH AIC
AUX
SUPPLIED
XXX
NOT SUPPLIED
G
SUPPLIED
X
NOT SUPPLIED
L
SUPPLIED
X
NOT SUPPLIED
208
208 Vac 60 Hz 1
240
240 Vac 60 Hz 1
480
480 Vac 60 Hz 2
220
220 Vac 50/60 Hz 3
380
380 Vac 50/60 Hz 3
Q
NOT USED
X
416
416 Vac 50/60 Hz 3
R
CANADIAN
C
DESCRIPTION
CODE
R
FEATURE
S
120 Vac 60 Hz 1
FEATURE
P
DESCRIPTION
CIRCUIT
BREAKER
RATING
(SEE TABLE)
120
CODE
N
BILINGUAL LABELING
FEATURE
1 - 120/208/240 Vac multi-tap input - Unit is wired and shipped from factory at specified voltage.
2 - 480 Vac input requires addition of medium or high ampere interrupting capacity circuit breakers.
3 - Special order - Please consult factory for availability.
INPUT AND OUTPUT CIRCUIT BREAKER INTERRUPTING RATINGS
CODE
TYPE
AC RATINGS
(ALL INPUT VOLTAGES)
DC RATINGS
(125 Vdc)
S
STANDARD
240 Vac: 10,000 AIC
10,000 AIC 4
5,000 AIC 5
M
MEDIUM AIC
240 Vac: 25,000 AIC
480 Vac: 18,000 AIC
10,000 AIC
H
HIGH AIC
240 Vac: 65,000 AIC
480 Vac: 25,000 AIC
25,000 AIC
4 - Rating applies to 130Vdc 16-25 Adc units.
5 - Approximate rating applies to all other units.
NOTE:
The model number listed on the charger data nameplate does not include any field-installed
options. Also, certain accessories are not included in the model number, even if they are shipped with the
charger. Check off below any accessories that were included, or that you install yourself.
Enclosure drip shield assembly
Floor mounting brackets
Rack mounting brackets
Cabinet heater assembly
Please find the serial number on the
data nameplate and record it here:
NEMA-4/12/13 type enclosure
Pad lock for front panel door
External temperature compensation probe
DNP3 Level 2 / Modbus communications module
IMPORTANT SAFETY INSTRUCTIONS
1.
Before using this equipment, read all instructions and cautionary
markings on: A) this equipment, B) battery, and C) any other equipment
to be used in conjunction with this equipment.
2.
This manual contains important safety and operating instructions, and
therefore should be filed for easy access.
3.
Remove all jewelry, watches, rings, etc. before proceeding with
installation or service.
4.
Do not touch any uninsulated parts of this equipment, especially the
input and output connections, as there is the possibility of electrical
shock.
5.
During normal operation, batteries may produce explosive gas. Never
smoke, use an open flame, or create arcs in the vicinity of this equipment
or the battery.
6.
Maintain at least 6in / 152mm clearance from all obstructions on the top,
bottom and sides of this equipment. Allow sufficient clearance to open
the front panel for servicing.
7.
Turn this equipment off before connecting or disconnecting the battery
to avoid a shock hazard and/or equipment damage.
8.
Connect or disconnect the battery only when the battery charger is off to
prevent arcing or burning.
9.
De-energize all ac and dc inputs to the battery charger before servicing.
10. Do not operate battery charger if it has been damaged in any way. Refer
to qualified service personnel.
11. Do not disassemble battery charger. Only qualified service personnel
should attempt repairs. Incorrect reassembly may result in explosion,
electrical shock, or fire.
12. Do not install the battery charger outdoors, or in wet or damp locations
unless specifically ordered for that environment.
PLEASE READ AND FOLLOW
ALL SAFETY INSTRUCTIONS
i
TABLE OF CONTENTS
QUICK OPERATION .................................................................................................. Back Cover
HOW TO READ THE AT10.1 MODEL NUMBER ..........................................Inside Front Cover
IMPORTANT SAFETY INSTRUCTIONS ......................................................................................i
1
Receiving and Installing the AT10.1 Battery Charger
1.1 Storing the AT10.1 .................................................................................................2
1.2 Reporting shipping damage ...................................................................................2
1.3 Unpacking and inspecting the AT10.1 ...................................................................2
Inspection checklist ................................................................................................2
1.4 Moving the AT10.1 .................................................................................................3
Enclosure type and weight table ............................................................................3
1.5 Mounting the AT10.1 ..............................................................................................3
1.5.1 Wall-Mounting the AT10.1 ...............................................................................4
1.5.2 Floor-Mounting the AT10.1 ..............................................................................6
1.5.3 Rack-Mounting the AT10.1 ..............................................................................8
1.6 Changing transformer taps...................................................................................10
1.7 Making the ac input connections ..........................................................................12
1.8 Making the dc output connections........................................................................14
1.9 Wiring the AT10.1 for remote sensing..................................................................16
1.10 Wiring to the remote alarm contacts ....................................................................18
Auxiliary Relay Board (optional) ...........................................................................19
1.11 Installing the temperature compensation assembly (optional).............................20
Using temperature compensation ........................................................................22
2
Operating the AT10.1 Battery Charger
2.1 Starting the AT10.1
2.1.1 Understanding the start-up sequence............................................................24
2.1.2 Checking the installation ................................................................................24
2.1.3 Starting the AT10.1 ........................................................................................24
Using the digital meter ...................................................................................24
Factory settings table.....................................................................................25
2.2 Using the AT10.1 front panel features
2.2.1 If the meter displays an error message .........................................................26
2.2.2 Selecting the meter mode..............................................................................26
2.2.3 Selecting the Float or Equalize mode ............................................................27
2.2.4 Choosing the Equalize method......................................................................27
Manual Timer method....................................................................................27
Manual Equalize method ...............................................................................28
Auto-Equalize Timer method .........................................................................28
2.2.5 Testing the front panel indicators & Summary Alarm Relays ........................29
2.2.6 Testing the Auxiliary Relay Board..................................................................29
2.2.7 Interpreting the alarm indicators ....................................................................29
ii
TABLE OF CONTENTS
2.3
Setting the AT10.1 parameters
2.3.1 Understanding parameter settings .................................................................30
2.3.2 Setting the Float and Equalize voltages.........................................................31
2.3.3 Setting the Equalize timer ..............................................................................32
2.3.4 Setting the Alarms..........................................................................................32
Setting the high and low dc voltage alarms ...................................................33
Adjusting ground detection sensitivity............................................................34
Disabling the ground detection alarm ............................................................35
2.3.5 Setting the current limit value.........................................................................35
2.3.6 Enabling the high dc voltage shutdown feature .............................................36
2.3.7 Adjusting the Voltmeter accuracy ..................................................................37
2.3.8 Using the Low Level Detector (LLD) ..............................................................38
2.3.9 Using the front panel security feature ............................................................39
2.4 Performing routine maintenance ..........................................................................40
Sample preventive maintenance procedure ..................................................42
3
Servicing the AT10.1 Battery Charger
3.1 A step-by-step troubleshooting procedure ...........................................................44
3.2 Interpreting front panel error messages ...............................................................45
3.3 Using the troubleshooting chart............................................................................48
3.4 Troubleshooting chart begins on ..........................................................................49
3.5 Replacing defective components..........................................................................58
3.6 Ordering replacement parts ..................................................................................64
Replacement parts tables (begin on)....................................................................64
APPENDIX A: AT10.1 Performance Specifications................................................................70
APPENDIX B: Field Installable Accessories ...........................................................................71
APPENDIX C: Standard Drawings
Standard NEMA-1 Enclosure Outline (Style-586) ..........................................................72
Standard NEMA-1 Enclosure Outline (Style-594) ..........................................................73
Optional Enclosure Outline Drawings (with penthouse and/or drip shield) ....................74
Internal Component Layout Detail w/Common Options .................................................76
Instrument Panel Detail w/Optional Auxiliary Relay PC Board ......................................78
Schematic - AT10.1 Group I Battery Charger - Standard w/o Options ..........................80
Schematic - AT10.1 Group I Battery Charger - with Common Options .........................82
Connection Diagram - AT10.1 Group I Battery Charger - Standard w/o Options ..........84
Connection Diagram - AT10.1 Group I Battery Charger - with Common Options .........86
APPENDIX D: Recommended Float / Equalize Voltages .......................................................88
APPENDIX E: DNP3 Level 2 / Modbus Communications Module.........................................89
APPENDIX F: UL Data ...............................................................................................................89
CUSTOMER NOTES (manual specifications).............................................................................90
iii
TABLE OF CONTENTS
1. RECEIVING THE AT10.1
1.1. STORING THE AT10.1
If you store the AT10.1 for more than a few days before installation, you
should store it in its original shipping container, and in a temperature
controlled, dry climate. Ambient temperatures of 32 to 122° F / 0 to 50° C
are acceptable. Storage should not exceed 2 years due to the limited shelf
life of the dc filter capacitors when they are not in service.
1.2. REPORTING SHIPPING DAMAGE
If, on delivery of the AT10.1 or related goods, you discover any damage
or shortage, make notation on all copies of delivering carrier's delivery
receipt before signing, and notify the delivery person of your findings. If
loss or damage is discovered after delivery, notify delivering carrier
immediately and request an inspection. The manufacturer does not assume
any liability for damage during transportation or handling.
Should the goods require an inspection by or return to the manufacturer,
please contact your sales representative for further instructions. Any
returned material must be properly packed in compliance with shipping
regulations. It is preferable to use the original shipping materials if
possible. Mark the outside of the shipping container with the Return
Material Authorization (RMA) number issued by the manufacturer.
1.3. UNPACKING AND INSPECTING THE AT10.1
Carefully remove all shipping materials from the AT10.1. Remove the
AT10.1 from the shipping pallet for inspection. Save all shipping
materials until you are sure that there is no shipping damage.
Once the AT10.1 is unpacked, inspect the unit for possible shipping
damage, using the checklist below. If shipping damage has occurred,
please refer to section 1.2 on this page for proper reporting.
INSPECTION CHECKLIST
o Enclosure exterior and interior are not marred or dented.
o There is no visible damage to exterior or interior components.
o All internal components are secure.
o Printed circuit boards are firmly seated on their standoffs.
o All hardware is tight.
o All wire terminations are secure.
o The User's Manual is included.
o You received all items on the packing list.
2
RECEIVING THE AT10.1
1.4. MOVING THE AT10.1
Once you have established that the AT10.1 is undamaged, identify the
enclosure style and weight of your unit. Refer to the table below.
AT10.1 Enclosure Type And Shipping Weight Table
Group I Cabinet Styles (586 / 594)
Output
Voltage
6 Adc
Ampere Rating
126 Adc
16 Adc
20 Adc
25 Adc
Style-586
12 Vdc
44 lbs
20 kg
Style-586
24 Vdc
44 lbs
20 kg
Style-586
44 lbs
20 kg
Style-586
58 lbs
26 kg
Style-586
67 lbs
30 kg
Style-586
75 lbs
34 kg
Style-586
67 lbs
30 kg
Style-586
75 lbs
34 kg
Style-586
67 lbs
30 kg
Style-586
75 lbs
34 kg
Style-586
58 lbs
26 kg
Style-586
75 lbs
34 kg
Style-594
110 lbs
50 kg
Style-594
110 lbs
50 kg
Style-594
110 lbs
50 kg
Style-586
130 Vdc
80 lbs
36 kg
Style-594
147 lbs
67 kg
Style-594
193 lbs
88 kg
Style-594
193 lbs
88 kg
Style-594
193 lbs
88 kg
48 Vdc
NOTE: Actual unit is approximately 20 lbs / 9kg below listed shipping weight in table.
The Style-586 & 594 enclosures do not feature lifting eyes for moving.
Instead, whenever possible move the unit with a forklift truck using the
supplied shipping pallet. To hoist the unit into a wall-mount or rackmount location, use a heavy-duty sling applicable to the enclosure size
and unit weight. To relocate the Style-586 & 594 enclosures, use the
aforementioned sling on a hoist or forklift truck.
1.5. MOUNTING THE AT10.1
Chose the mounting method for the unit enclosure from the table below.
ENCLOSURE
MANUAL
SECTION
MOUNTING METHOD
1.5.1
Wall-Mounting
STANDARD STANDARD
1.5.2
Floor-Mounting
OPTIONAL
OPTIONAL
OPTIONAL
OPTIONAL
1.5.3
19in / 483mm Rack-Mounting
23-24in / 584-610mm
Rack-Mounting
OPTIONAL
OPTIONAL
Style-586
Style-594
3
INSTALLING THE AT10.1
1.5.1. Wall-Mounting the AT10.1
Wall-mounting the AT10.1 battery charger is the standard way to install
the Group I enclosures (Style-586/594). In planning for wall mounting of
the AT10.1 consider the following:
1. The wall must be strong enough to properly support the weight of the
AT10.1. See the Weight Table located in section 1.4 on page 3. The weight
of your AT10.1 may be different from the table value, depending on options
or accessories you ordered.
2. Select conduit entrances carefully. Use of the pref-fab knockouts on the
sides or bottom of the enclosure will allow removal of the cabinet shroud
(and internal access for servicing) without removal of unit from the wall.
3. The location:
• Should be free of drips and splatter. If dripping liquids are a problem,
install a drip shield kit (part number EI0191-00). For kit availability, see
ordering information in Appendix B on page 71.
• Should be between 32 and 122 °F / 0 and 50 °C, with relative humidity
between 5 and 95% non-condensing.
• Must be free of explosive materials.
4. Maintain at least 6in / 152mm of free air on top, bottom and both sides for
cooling air.
5. Allow 36in / 914mm front clearance for operation and maintenance.
PROCEDURE
To wall-mount the
AT10.1, install four (4)
.25in / 6.4mm bolts on
the wall rated to support
the AT10.1 weight plus a
safety factor of at least 2
times. Place the AT10.1
on the bolts, add
appropriate mounting
hardware and tighten.
Reference the graphics on
the next page. For more
information, see Outline
Drawings in Appendix C
on page 72.
4
INSTALLING THE AT10.1
WALL-MOUNTING THE AT10.1 - GRAPHICS
5
INSTALLING THE AT10.1
1.5.2. Floor-Mounting the AT10.1
To floor mount the AT10.1, you must use the floor mounting accessory kit
(part number EI0192-00). For kit availability, see ordering information in
Appendix B on page 71. The kit contains brackets that elevate the top of
the AT10.1 approximately 47in / 1194mm above floor level, with
provision for floor anchoring. The kit includes an instruction sheet
(JA0083) showing assembly dimensions and mounting details.
You must locate the anchor-bolt holes at least 4.25in / 108mm from any
wall, to allow clearance for the charger enclosure behind the mounting
brackets. In addition, you must consider the following:
1. Placement of conduit entrances (use the knockouts on the sides or bottom of
the charger to allow access for servicing without removing the unit from the
mounting brackets).
2. The location:
• Should be free of drips and splatter. If dripping liquids are a problem,
install a drip shield kit (part number EI0191-00). For kit availability, see
ordering information in Appendix B on page 71.
• Should be between 32 and 122 °F / 0 and 50 °C, with relative humidity
between 5 and 95% non-condensing.
• Must be free of explosive materials.
3. Maintain at least 6in / 152mm of free air on top, bottom and both sides for
cooling air.
4. Allow 36in / 914mm front clearance for operation and maintenance.
PROCEDURE
To floor-mount the AT10.1,
follow the directions featured in
instruction sheet (JA0083),
included with your floormounting kit (part number
EI0192-00). These instructions
showing assembly dimensions
and mounting details.
Place the AT10.1 assembly on
the mounting bolts, add
appropriate mounting hardware
and tighten.
Reference the graphics on the
next page.
6
INSTALLING THE AT10.1
FLOOR-MOUNTING THE AT10.1 - GRAPHICS
ENCLOSURE
Style-586
Style-594
A
DIMENSION (in / mm)
B
C
D
16.50 / 419
46.63 / 1184
11.75 / 298
15.00 / 381
19.75 / 502
47.75 / 1213
14.25 / 361
18.25 / 463
7
INSTALLING THE AT10.1
1.5.3. Rack-Mounting the AT10.1
The AT10.1 can be installed in most relay racks with standard EIA hole
spacing (see the table below for the allowable combinations). The rack
mounting kit (part number EI0193-00), includes mounting brackets and
the necessary hardware to install one AT10.1 battery charger. The kit
includes an instruction sheet (JA0091) showing installation details. For kit
availability see ordering information in Appendix B on page 71.
When rack mounting the AT10.1, you must consider the following:
1. The rack must be strong enough to properly support the weight of the
AT10.1. See the Weight Table located in section 1.4 on page 3.
2. Placement of conduit entrances (be sure the knockouts on the sides or
bottom of the charger are accessible after the charger is rack-mounted).
3. The location:
• Should be free of drips and splatter. If dripping liquids are a problem,
install a drip shield kit (part number EI0191-00). For kit availability, see
ordering information in Appendix B on page 71.
• Should be between 32 and 122 °F / 0 and 50 °C, with relative humidity
between 5 and 95% non-condensing.
• Must be free of explosive materials.
4. Maintain at least 6in / 152mm of free air on top, bottom and both sides for
cooling air.
5. Allow 36in / 914mm front clearance for operation and maintenance.
PROCEDURE
To rack mount the AT10.1, first install the brackets onto the rack. Second,
mount the AT10.1 onto the rack-mounting brackets using the hardware
supplied. Provide at least 6in / 152mm of air space above and below the
AT10.1 in the rack for cooling. You do not need to modify the AT10.1
enclosure. Rack-mount outline dimensions are shown on the next page.
CHARGER RATING
Vdc
Adc
12 Vdc
all
24 Vdc
all
48 Vdc
6-12 Adc
48 Vdc
16-25 Adc
130 Vdc
6 Adc
130 Vdc
12-25 Adc
8
19in / 483mm
Yes
Yes
Yes
No
Yes
No
RACK WIDTH
23in / 584mm
Yes
Yes
Yes
Yes
Yes
Yes
24in / 610mm
Yes
Yes
Yes
Yes
Yes
Yes
INSTALLING THE AT10.1
RACK-MOUNTING THE AT10.1 - GRAPHICS
Style-586 Enclosure
Style-594 Enclosure
NOTES:
1. Units are installed from the front.
2. Units shown above without penthouse enclosure. If penthouse is used, add
7in / 178mm to top of enclosure.
3. Refer to the outline drawings in Appedix C for enclosure dimensions.
9
INSTALLING THE AT10.1
1.6. CHANGING TRANSFORMER TAPS
Before you wire ac power to the AT10.1, check the wiring of the main
transformer T1, to be sure it is connected for your ac input voltage. The
AT10.1 accepts standard input voltages of 120, 208 or 240 Vac by
changing jumpers on T1. No other changes are required. The AT10.1 is
wired at the factory for 240 Vac, except on special order. Models for 220,
380 or 416 Vac at 50/60 Hz are available on special order.
EXCEPTION: An AT10.1 battery charger rated for 480 Vac input uses a
special transformer that has no taps or jumpers. The 480 Vac
transformer cannot be used for any other input voltage.
Before changing the T1 taps, be sure that ac and dc supplies to the AT10.1
are turned off and locked out. Verify that no voltage is present by using a
voltmeter at terminals TB1-L1 and TB1-L2 (ac), TB1(+) and TB1(-) (dc)
and remote sense terminals (dc). Note that turning off the ac and dc circuit
breakers on the AT10.1 does not eliminate live voltages inside the
enclosure. Also de-energize any external wiring to the alarm relay
contacts.
Verify that all voltages within the enclosure are de-energized and locked
out. See section 3.5 for necessary steps to follow when accessing internal
components within the AT10.1. Change the jumpers on T1 as shown in
the table on the next page. All transformers have (2) jumpers; always use
both as specified in the table. The transformers used in the small enclosure
(586) use piggyback quick-connect terminals. The transformers in the
larger enclosure (594) use 10-32 stud terminals.
Models designed for 220 Vac, 50/60 Hz have no jumpers, and can be used
only for that voltage. Models designed for 380 or 416 Vac also have no
jumpers, and can be operated on either voltage.
NOTE: This procedure refers only to Group I AT10.1 battery chargers
(rated 6-25 Adc). A different procedure exists for Group II AT10.1
battery chargers (rated 30-100 Adc). Please refer to the Operating and
Service Instructions specific to the Group II AT10.1 battery charger for
changing the transformer taps on these larger units. Otherwise, damage
to your charger and equipment may occur.
10
INSTALLING THE AT10.1
CHANGING TRANSFORMER TAPS - GRAPHICS
480 V
PRIMARY
T1 CONNECTION TABLE
INPUT VAC
JUMPERS
120/208/240 V
PRIMARY
H4
H5
SECONDARY
X1
H5
120
H1-H3, H2-H5
H2
208
H2-H4 (2) JUMPERS
H3
240
H2-H3 (2) JUMPERS
480
NONE
X4
H1
Y2
H1
Y1
TRANSFORMER SCHEMATIC
PROCEDURE:
1) BE SURE ALL VOLTAGES ARE DE-ENERGIZED AND LOCKED OUT.
2) BE SURE TERMINALS ARE FULLY SEATED (586 ENCL).
.
3) BE SURE STUD TERMINALS ARE TIGHT (594 ENCL).
4) CHECK YOUR WORK AFTER COMPLETION.
5) FOR ADDITIONAL INFORMATION, SEE WIRING DIAGRAM
IN APPENDIX.
TYPICAL FOR TRANSFORMER
IN 586 ENCLOSURE
TYPICAL FOR TRANSFORMER
IN 594 ENCLOSURE
H1
H1 H3
H2
H5
H4
H3
H2
H5
H4
JUMPERS (2)
F1-5R2
11
INSTALLING THE AT10.1
1.7. MAKING THE AC INPUT CONNECTIONS
Follow these steps to connect ac power to the AT10.1:
1. Use a branch circuit breaker or fused disconnect switch, properly sized for
the maximum input current of the AT10.1, as shown in the table below. This
device should have lockout capability so that the ac input can be deenergized and locked out for maintenance. A time delay circuit breaker or
slow-blow fuse is recommended.
2. Size the ac input wiring per the National Electric Code (NEC) and local
codes for the rating of the branch circuit breaker or fused disconnect switch.
3. All specific requirements of your facility take precedence over these
instructions.
4. Be sure the AT10.1 main transformer, T1, is properly connected for your ac
input voltage. See section 1.6 for details.
5. Remove the safety cover.
6. Run the ac wiring to terminals TB1-L1, TB1-L2 and TB1-GND on the I/O
panel in the enclosure. Compression lugs accepting wire sizes #14-6 AWG.
wire are supplied for your convenience. To make these connections, strip the
insulation .50in / 13mm on the incoming wires and connect the wires to the
appropriate lugs as shown on the next page.
7. Using a flat-head screwdriver, securely tighten the compression screws on
the lugs to 35-45 in-lb / 4.0-5.1 Nm.
8. Reinstall the safety cover after you have made and checked all connections.
MAXIMUM INPUT CURRENT AT 120 Vac
OUTPUT VOLTAGE
OUTPUT
CURRENT
6
12
16
20
25
1
1
12
24
48
130
2
4
8
14
3
7
14
30
4
9
18
32
5
11
23
39
6
14
29
49
Example (shaded):
A 130 Vdc/12 Adc
battery charger
draws 30 Aac at
120 Vac.
All currents shown
are ±10%.
To determine the input current, Iac, for other input voltages, use the formula:
I
ac
= IT ×
120
V ac
where Vac is the new input voltage, and IT is the input current from the table above.
12
INSTALLING THE AT10.1
MAKING THE AC INPUT CONNECTIONS - GRAPHICS
NOTES:
1. The drawing above does not show other components mounted to the I/O
panel. Be careful not to disconect any other component leads.
2. Always use a proper ground.
3. On 120 Vac input, connect the neutral leg to the terminal L2.
4. Wire insulation must be rated for 194° F / 90° C or better.
5. Use copper or aluminum conductors only.
13
INSTALLING THE AT10.1
1.8. MAKING THE DC OUTPUT CONNECTIONS
Follow these steps to connect the battery to the AT10.1:
1. Size the dc wiring to minimize voltage drop. The acceptable wire size
depends on your installation. As a guideline, the voltage drop should not
exceed 1% of nominal output voltage at full current. Refer to the table below
to determine the voltage drops for various wire sizes, currents and distances.
WIRE SIZING CHART
VOLTAGE DROP PER 100ft / 30.5m OF WIRE (FOR COPPER AT 68° F / 20° C)
DC CURRENT (AMPERES)
WIRE SIZE
(AWG.)
6
12
16
20
25
16
2.5V
5.0V
6.7V
8.2V
10.5V
14
1.6V
3.2V
4.2V
5.3V
6.6V
12
1.0V
2.0V
2.6V
3.3V
4.2V
10
0.63V
1.3V
1.7V
2.1V
2.6V
8
0.40V
0.80V
1.1V
1.3V
1.7V
6
0.25V
0.50V
0.66V
0.83V
1.1V
4
0.16V
0.32V
0.42V
0.52V
0.65V
EXAMPLE: 100ft / 30.5m of #8 AWG. wire at 16A has a 1.1V drop.
2. All specific requirements of your facility take precedence over these
instructions.
3. The AT10.1 is factory wired to regulate output voltage at the output
terminals. If the total voltage drop is greater than 1% (e.g., 1.3V for a 130
Vdc system), remote sense wiring is recommended, see section 1.9.
PROCEDURE
1. Use a dc disconnect switch or circuit breaker between the AT10.1 and dc
bus. This device should have lockout capability to allow the AT10.1 to be
disconnected from the dc bus for maintenance.
2. Remove the safety cover.
3. Run the dc wiring to terminals TB1(+) and TB1(-) on the I/O panel in the
enclosure. Compression lugs, accepting wire sizes #14-6 AWG., are
supplied for your convenience. To make these connections, strip the
insulation .50in / 12.7mm on the incoming wires. Connect the wires to the
appropriate lugs as shown on the next page.
4. Using a flat-head screwdriver, securely tighten the compression screws on
the lugs to 35-45 in-lb / 4.0-5.1 Nm.
5. Reinstall the safety cover after you have made and checked all connections.
14
INSTALLING THE AT10.1
MAKING THE DC OUTPUT CONNECTIONS - GRAPHICS
NOTES:
1. The drawing above does not show other components mounted to the I/O
panel. Be careful not to disconect any other component leads.
2. Always use a proper ground.
3. Wire insulation must be rated for 194° F / 90° C or better.
4. Use copper or aluminum conductors only.
15
INSTALLING THE AT10.1
1.9. WIRING THE AT10.1 FOR REMOTE SENSING
You can wire the AT10.1 to regulate the output voltage at the battery
terminals, instead of at the charger output terminals. Remote sensing does
the following:
1. Compensates for voltage drop in the dc wiring between the AT10.1 and the
battery.
2. Directly monitors the battery or dc bus voltage. The front panel meter
displays the actual voltage on the dc bus.
You wire the AT10.1 for remote sensing by installing a two-wire cable
from the AT10.1 remote sense terminals to the battery terminals. The
AT10.1 control circuitry then measures the dc voltage at the battery
terminals, and controls the output of the charger to maintain the battery
voltage at the desired float or equalize voltage.
NOTE: If the remote sense wiring fails, the AT10.1 detects the fault,
and displays E 06 on the front panel meter. See section 3.2 for details.
CAUTION: The AT10.1 cannot protect against short circuits in the
remote sense wiring. You should install a 1.0A fuse at the battery or dc
bus end of the remote sense cable.
To wire the AT10.1 for remote sensing, follow the procedure and diagram
on the next page.
If you ever need to disable remote sense, follow the steps below:
•
•
De-energize and lock out all ac and dc voltages to the AT10.1. Check
with a voltmeter.
Disconnect the remote sense wires from the battery or dc bus terminals
first.
CAUTION: You must do the steps above first.
• Remove the remote sense leads from the remote sense (+) and (-)
terminals on the I/O panel. Insulate each lead separately. Coil up the
wires and leave them in the bottom of the charger, in case you want to
wire for remote sense again in the future.
• Reconnect wire # 74 to the dc output (+) terminal.
• Reconnect wire # 72 to the dc output (-) terminal.
• Restart the AT10.1 according to the instructions in section 2.1.
16
INSTALLING THE AT10.1
PROCEDURE
1. De-energize and lock out all ac and dc voltages within the AT10.1 enclosure.
Check with a voltmeter.
2. Remove safety shield.
3. Wire the AT10.1 remote sense to the dc bus as shown in the figure below.
4. Move wires # 72 and # 74 from the TB1 (-) and (+) dc output terminals to
the corresponding remote sense terminals as shown in the lower left figure.
5. Connect the external remote sense leads from the battery or dc bus to the
remote sense terminals on the I/O panel as shown in the lower right figure.
6. Check your work thoroughly. Replace the safety shield before reeneregizing
the charger.
7. Restart the AT10.1 according to the instructions in section 2.1.
NOTES:
1. Use #16 AWG. twisted pair.
2. Maximum current is 150 mA.
3. Run leads in their own conduit.
4. Fuse the wiring at the battery or dc bus.
17
INSTALLING THE AT10.1
1.10. WIRING TO THE REMOTE ALARM CONTACTS
Built-in common alarm relay
The Primary Alarm
functions are
included as standard
equipment with the
AT10.1. The
Common Alarm
relay, located on the
main control circuit
board on the back of
the door, provides
one form C
summary alarm
(common alarm)
contact that
transfers for any
alarm. Follow the
procedure below to
wire a remote
annunciator to this
contact. See section
2.2.7 for a
description of the
alarm functions.
PROCEDURE
1. Allow 30in / 762mm of wire inside the enclosure (excess will be trimmed).
2. Route wires to front door by following the existing harness through the door
hinge as shown. Use (2) wire ties and allow a 4-6in / 102-153mm loop for
the hinge.
3. Trim wires to the proper length for connecting to TB3. Strip .25in / 6.4mm
of insulation from the wires. Make the connections at TB3, and securely
tighten the screws.
NOTES:
1. Alarm contacts are rated at 0.5A / 125 Vac or Vdc.
2. Terminal block is a compression type, accepting wire sizes #22-14 AWG.
3. Terminals are labeled in non-alarm condition.
18
INSTALLING THE AT10.1
Auxiliary Relay Board (optional)
The Auxiliary Alarm Relay PC Board (A5), mounted inside the separate
top enclosure (penthouse), provides two form C contacts (TB4-1 through
TB4-36) for each of the following individual alarms:
•
•
•
•
•
•
High DC Voltage
Low DC Voltage
DC Output Failure
AC Failure
Ground Fault Detection (positive or negative)
Summary Alarm
HVDC
C, NC, NO
HVDC
C, NC, NO
LVDC
C, NC, NO
LVDC
C, NC, NO
DC OUT
FAILURE
C, NC, NO
DC OUT
FAILURE
C, NC, NO
AC FAIL
C, NC, NO
AC FAIL
C, NC, NO
GROUND
DETECT
C, NC, NO
GROUND
DETECT
C, NC, NO
SUMMARY
C, NC, NO
SUMMARY
C, NC, NO
1 2 3
4 5 6
7 8 9
10 11 12
13 14 15
16 17 18
19 20 21
22 23 24
25 26 27
28 29 30
31 32 33
34 35 36
Follow the procedure below to wire annunciators to one or more of these
alarm contacts.
PROCEDURE
1. Remove the top panel from the penthouse enclosure (on top of the main
charger enclosure).
2. Route your remote annunciator wiring into the penthouse enclosure through
one of the unused knockouts in the side of the enclosure.
3. Connect the wiring (use #22-14 AWG.) to the appropriate terminals of TB4
on the back wall of the penthouse enclosure (as shown in the drawing at the
right). Strip each wire .25in / 6.4mm, and securely tighten the terminal
screws. The terminals are labeled in the non-alarm condition.
4. Replace the top panel on the penthouse enclosure.
NOTES:
1. Alarm contacts are rated at 0.5A / 125 Vac or Vdc.
2. Terminal block is a compression type, accepting wire sizes #22-14 AWG.
3. Terminals are labeled in non-alarm condition.
19
INSTALLING THE AT10.1
1.11. INSTALLING TEMP. COMPENSATION ASSEMBLY (OPTIONAL)
The temperature compensation assembly consists of a probe containing a
temperature-dependent resistor in an epoxy module that you install near
your battery. There are three steps in installing the assembly:
1. Mounting the probe assembly near the battery.
2. Installing an interconnection cable from the probe assembly to the AT10.1.
3. Wiring the charger end of the cable to a terminal block on the main control
circuit board.
The actual tempco probe is the same for all battery types and all output
voltages of the AT10.1. The kit part numbers differ depending on cable
length ordered. See the tables in Appendix B on page 71 for ordering
information. Each kit contains detailed installation instructions (JA501500). The main elements of the installation are outlined below.
WARNING:
High voltages appear at several points inside the battery charger. Use
extreme caution when working inside the charger. Do not attempt to
work inside the charger unless you are a qualified technician or
electrician.
Disconnect and lock out all power to the battery charger before starting
to remove or replace any components. Turn the ac power off at the
distribution panel upstream from the battery charger. Disconnect the
battery from the charger output terminals.
1. De-energize and lock out all ac and dc voltage sources to the AT10.1. Check
with a voltmeter before proceeding.
2. Mount the probe on a clean, dry surface as close to the battery as possible,
such as the battery rack. Do not mount the probe:
• on the battery itself
• on unpainted wood or bare galvanized metal.
• on plastic surfaces
3. To apply the probe, clean the mounting surface with isopropyl alcohol, and
allow to dry thoroughly. Remove the protective backing from the doublefaced adhesive tape on the probe, and securely press it onto the surface.
4. Install the cable supplied with the temperature compensation probe kit:
• Start at the AT10.1. The end of the cable with two stripped wires and one
lead with a quick-connect terminal will be connected inside the
enclosure. Leave 30in / 762mm of cable inside the enclosure, and route
the other end to the probe at the battery.
20
INSTALLING THE AT10.1
•
•
Run the cable though a conduit if possible, but not through a conduit
containing any power wiring.
Route the other end to the probe at the battery and coil up excess cable.
NOTE: If the standard (25ft / 7.6m) cable isn't long enough, longer
cable assemblies are available in lengths of 50, 100 & 200ft / 15.2,
30.5 & 61.0m. See Appendix B on page 71 for ordering information.
• Be sure your wiring conforms to the NEC and your facility requirements.
5. Attach the interconnection cable to the AT10.1 as shown in the figure below:
• Route the
cable within
the AT10.1
enclosure so
that it runs
with the wire
harness to the
back of the
front panel,
and easily
reaches the
main control
circuit board.
• At the main
control circuit
board, insert
one of the bare
wires from the
cable into each
terminal of
TB8. Polarity
is not
important.
• Unplug the harness ground wire # 30 from terminal J6 on the left edge of
the main control circuit board. Plug the connector at the end of the
nylon-shielded wire of the cable assembly onto J6. Reconnect the ground
wire # 30 from the system harness onto the piggy-back connector
featured at the end of the nylon-shielded wire.
• Using plastic wire ties, tie the interconnection cable loosely to the
existing wire harness. Be especially sure that the cable conforms to the
service loop at the hinge end of the door.
6. At the battery, connect the quick-connect terminals to the temperature
compensation probe. Polarity is not important. Coil up any excess wire and
tape or tie it together to prevent damage.
21
INSTALLING THE AT10.1
7. Check your work. Be sure that:
• All connections are secure.
• The shield is connected to ground at the charger end only (on the main
circuit board).
• The cable is connected to TB8 on the circuit board. Other terminal
blocks may look similar.
8. Restart the AT10.1 using the startup procedure in section 2.1. During
startup, the AT10.1 displays LEAD on the front panel, indicating that the
temperature compensation is set up for lead-acid batteries. While this is
being displayed, you can press any front panel key to change the display to
read NICD, to change the temperature compensation setup for nickel
cadmium batteries. The choice you make is saved internally, and will be
used again by the AT10.1 the next time it starts.
9. Adjust the output float and equalize voltages to the battery manufacturer's
recommended values, using the AT10.1's front panel meter, as described in
section 2.3.2.
NOTE: If the temperature compensation probe, or the wiring
from the probe to the AT10.1, is damaged and becomes an
open circuit, the AT10.1 detects the damage and displays
E 08 on the display. The charger then reverts to normal nontemperature-compensated operation until the probe or wiring
is repaired. Once the probe is repaired, you must restart the
AT10.1 to activate the probe, as described in section 2.1.
Using temperature compensation
Whenever an electric storage battery is being charged, the terminal
voltage of the battery changes a small amount whenever the battery
temperature changes. As the battery temperature increases, its terminal
voltage decreases. When the battery is being charged with a float type
charger, with a constant output voltage, the float current increases when
the temperature increases. This results in overcharging the battery, which
can result in damage to the materials, or at least the need for more
frequent maintenance.
When the AT10.1 is equipped with a temperature compensation probe, it
is able to adjust the output voltage applied to the battery to keep the float
current constant, thereby avoiding overcharging. The probe senses the
ambient temperature at the battery, and adjusts the output float/equalize
voltages to compensate for variations in temperature. If the ambient
temperature increases, the AT10.1 output voltage decreases.
22
INSTALLING THE AT10.1
Please note the following:
•
•
•
•
•
You should set the Float and Equalize voltages to the values
recommended by your battery manufacturer for 77° F (25° C).
When you enter the Edit mode to adjust the Float or Equalize voltage
(see section 2.3.2), the front panel meter shows the 77° F (25° C) value
for the Float or Equalize voltage, even if the battery is warmer or cooler
than 77° F (25° C).
The actual output voltage of the AT10.1 may be different from the value
shown on the front panel meter, if the battery is warmer or cooler than
77° F (25° C).
Use a digital meter to measure the actual output voltage of the AT10.1. If
you know the temperature at the temperature compensation probe, you
can use the graph below to determine that the output voltage is correct.
If the battery temperature goes below 32° F (0° C), there will be no
further increase in charger output voltage. Likewise, if the battery
temperature goes above 122° F (50° C), there is no further decrease in
output voltage.
OUTPUT VOLTAGE VS BATTERY TEMPERATURE
108
Lead-Acid
106
Percent Output Voltage
104
102
N ickel-Cadm ium
E x a m p le:
100
100 Deg. F
97% Output
V o ltage
98
96
94
20
40
60
80
100
120
Temperature, Degrees Fahrenheit
EXAMPLE: Suppose you have a lead-acid battery whose temperature
is 100° F / 37.8° C. As shown on the graph, the output voltage should
be approximately 97% of the 77° F voltage. If the float voltage is set
on the front panel to 132 Vdc, the actual output voltage will be:
132 x 0.97 = 128 Vdc
23
OPERATING THE AT10.1
2. OPERATING THE AT10.1 BATTERY CHARGER
2.1. STARTING THE AT10.1
2.1.1. Understanding the startup sequence
The AT10.1 is set up at the factory to work with most common batteries
and loads without further adjustment. When you start the AT10.1 for the
first time, the factory settings (float voltage, equalize voltage, etc.) control
the operation of the charger. You can change the settings after you start
the charger. The FACTORY SETTINGS are shown in table on page 25.
The AT10.1 startup routine takes about five seconds. The microprocessor
that controls the AT10.1 initializes the charger by reading the settings that
are stored internally. The control circuit then "soft starts" the charger, and
the dc output voltage and current increase gradually to the rated value.
2.1.2. Checking the installation
Be sure that you have followed the installation
instructions carefully. Check the ac input
supply voltage and the battery voltage, and be
sure that they match the information on the
AT10.1 nameplate. Verify that the jumpers on
the main transformer T1 are correct for your
ac supply voltage. Open the front panel, and
check the battery polarity at the TB1 (+) and (-)
terminals.
2.1.3. Starting the AT10.1
When you are sure that all connections to the
AT10.1 are properly made, follow these steps
to start up the AT10.1:
•
Using the Digital Meter
When you first start the
AT10.1, the meter display
alternates between dc output
voltage and dc output current.
Each reading is held for two
seconds; lights to the left of
the display indicate whether
the meter is displaying
voltage or current.
If you want to “freeze” the
meter to display only voltage,
press the METER MODE
key on the front panel. To
freeze the meter to display
only current, press the key
again. Press the key twice
more to revert to the
alternating display.
Turn on the front panel dc circuit breaker. The digital meter indicates the
battery voltage only. If the meter display doesn't light, do not proceed.
Turn off the dc breaker, and check all connections and the battery
polarity again. Also check the battery voltage. It must be above 50% of
nominal voltage to turn on the display. If you can't find the problem,
refer to the Troubleshooting Procedure in section 3.1 on page 44.
CAUTION: If you try to turn on the dc circuit breaker with the battery
connected in reverse polarity, the circuit breaker will immediately
trip. Do not try to close the dc breaker again, since this may damage
the battery charger. Correct the battery polarity before proceeding.
24
OPERATING THE AT10.1
•
•
•
If you have an optional temperature compensation probe installed, the
front panel displays LEAD during startup, indicating that the
temperature compensation is set up for lead-acid batteries. While this is
being displayed, you can press any front panel key to change the display
to read NICD, to change the temperature compensation setup for nickel
cadmium batteries. The choice you make is saved internally, and will be
used again by the AT10.1 then next time it starts.
Turn on the front panel ac circuit breaker. The digital meter displays the
output voltage and current. See Using the Digital Meter on page 24. You
should hear a soft hum from the AT10.1 as the output current increases.
NOTE: If you turn on the ac breaker before the dc breaker,
and you have a filtered model of the AT10.1, there is a
possibility that the dc breaker will trip when you try to turn it
on. This is caused by the filter capacitors discharging into the
battery. To get around this problem, turn off the ac breaker.
Restart the AT10.1 by turning on the dc breaker first.
The green FLOAT indicator lights. Press the CHRG MODE key on the
front panel. The FLOAT indicator goes off, and the yellow EQLZ
indicator lights. Press the CHRG MODE key again to return the charger to
the float mode.
The table below shows the normal factory settings for float and equalize
voltages, equalize time, current limit setting, and alarm settings. If your
purchase order specified other float or equalize voltage settings, a tag
attached to the front panel of the AT10.1 lists the actual voltage settings.
FACTORY SETTINGS FOR ALL PARAMETERS
Parameter
Float Voltage
Equalize Voltage
HVDC Alarm
LVDC Alarm
Equalize Time
Equalize Method
Current Limit
HVDC Shutdown
12
Nominal Vdc
24
48
130
13
26
52
131
14
28
56
139
14.4
28.8
57.6
144
12
24
48
120
24 Hours
Manual Timer
110% of nominal output current
Disabled
25
OPERATING THE AT10.1
2.2.
USING THE AT10.1 FRONT PANEL FEATURES
2.2.1. If the meter displays an error message
When you apply power to the AT10.1 for the first time, the microprocessor control circuit performs a diagnostic check of the system. If it
finds anything wrong, it writes an error code to the display, such as E 01.
Below is a list of the error codes. See section 3.2 for a full explanation of
each error code.
Error Code
Explanation
E 01
Resistor R2 is open or defective.
E 02
Short circuit on output
E 03
HVDC Shutdown has occurred
E 04
Internal memory failure
E 05
Not used
E 06
Failure in Remote Sense wiring
E 07
DC breaker is open, or internal or external
output wiring is defective.
E 08
Defective temperature compensation probe
E 09
Misadjusted current limit
E 10
Open internal feedback loop
A 02
Equalize mode is inhibited
2.2.2. Selecting the meter mode
• Press the METER MODE key to change the meter display mode. The digital
meter has four operating modes:
1. Alternating between output voltage and output current. When the
charger is in a timed equalize mode, the meter alternates between
output voltage, output current, and equalize hours remaining.
2. Displaying output voltage only. The DC Volts indicator lights.
3. Displaying output current only. The DC Amps indicator lights.
4. Displaying equalize hours remaining only. The EQLZ HRS
REMAINING indicator lights. If the AT10.1 is not in a timed
equalize mode, the meter displays the full programmed equalize
time.
• When the charger starts initially, the meter alternates, showing output
voltage and output current. The DC Volts and DC Amps indicators light
alternately to indicate what is being displayed.
26
OPERATING THE AT10.1
2.2.3. Selecting the Float or Equalize mode
The AT10.1 has 2 output voltage settings, Float and Equalize. Use the
Float mode for all normal battery charging and to operate your dc system.
Use the Equalize mode if it is necessary to balance the level of charge
among the cells of the battery. Consult your battery data sheets for
information on equalize-charging your battery.
•
Press the CHRG MODE key to change to the equalize mode.
If the equalize method is set to manual timer or auto-equalize timer, the
charger will revert to the float mode at the end of the selected equalize
time.
•
You can press the CHRG MODE key at any time to change back to the float
mode.
2.2.4. Choosing the Equalize method
Press the EQLZ MTHD key to choose the desired equalize method. The
indicator next to the desired equalize method will light. Three equalize
methods are available in the AT10.1:
•
•
•
Manual Timer
Manual Equalize
Auto-Equalize Timer
These equalize methods are described below.
Manual Timer Method
Choose the manual timer method if you perform regularly scheduled
equalize charging, or if you base your equalize charging on regular
readings of the specific gravity of each cell of your battery (for lead-acid
batteries). When your battery requires equalize charging, adjust the
manual timer to 1-2 hours for each 100 AH of battery capacity (see
section 2.3.3 to learn how to adjust the equalize time). The battery
manufacturer can help you determine the best equalizing schedule for
your battery.
After you select the manual timer method, press the CHRG MODE key to put
the charger into the equalize mode. The EQLZ indicator will light. When
the equalize timer is finished, the charger reverts automatically to the float
mode, and the FLOAT indicator lights.
At any time during the equalize charge, you can switch the charger back
to float mode by pressing the CHRG MODE key. The FLOAT indicator will
light.
If there is an ac power failure during a timed equalize charge, the AT10.1
remembers the remaining equalize time. When ac power is restored, it
resumes the equalize charge where it left off.
27
OPERATING THE AT10.1
Manual Equalize Method
Choose the manual equalize method when you want to equalize charge the
battery, but only when you are able to monitor the battery voltage and
gassing rate. After you select the manual equalize method, press the
CHRG MODE key to put the charger into the equalize mode. The EQLZ
indicator will light.
Press the CHRG MODE key again to return the charger to the float mode. The
FLOAT indicator will light.
NOTE: Never leave the AT10.1 unattended in the equalize mode with the
manual equalize method selected, because a sustained overcharge may
cause permanent damage to the battery.
Auto-Equalize Timer Method
Choose the auto-equalize timer method if you have a flooded (non-sealed)
battery that is subject to infrequent discharges, or when the battery will be
discharged by at least half of its rated capacity during an ac power failure.
When ac power is restored to the charger, it turns on in the equalize mode
automatically, and the EQLZ indicator lights. At the end of the equalize
charging-time that you select, the charger reverts automatically to the float
mode, and the FLOAT indicator lights. At any time during the equalize
charge, you can switch the charger back to float mode by pressing the
CHRG MODE key. The FLOAT indicator will light.
Consult your battery manufacturer's instructions before using the autoequalize timer method with sealed (valve-regulated) lead-acid batteries.
Whenever the ac supply fails for 12 seconds or longer, the auto-equalize
timer is enabled. For shorter periods, the timer behaves as shown below:
Mode before
ac failure
AC falure
duration
Mode after
ac failure
FLOAT
less than
12 seconds
FLOAT
EQUALIZE
less than
12 seconds
Resume EQUALIZE
with time remaining
FLOAT or
EQUALIZE
12 seconds
or greater
EQUALIZE
with full time
Switching to Equalize Mode with Auto-Equalize Timer Method Selected
You can start an equalize charge at any time.
• Press the CHRG MODE key. The EQLZ indicator lights.
When the equalize timer is finished, the charger reverts automatically to
the float mode, and the FLOAT indicator lights.
28
OPERATING THE AT10.1
2.2.5. Testing the front panel indicators
• Press the DOWN key. This is also the LAMP TEST key.
The meter will display 8888, and all status & alarm indicators will light.
The LAMP TEST key does not test the AC ON indicator. The AC ON
indicator lights whenever ac power is present, and the ac circuit breaker is
turned on. The LAMP TEST key does not operate when ac power is off.
To test the action of the summary alarm relay, press and hold the
LAMP TEST key for four seconds. The relay transfers. If you are monitoring
the relay with a remote annunciator, it detects the alarm condition.
2.2.6. Testing the Auxiliary Relay Board (optional)
If you have the optional Auxiliary Relay Board installed, you can test the
action of the alarm relays. Press and hold the LAMP TEST key for four
seconds. The six auxiliary alarm relays on the Auxiliary Relay Board
transfer. Remote annunciators connected to these relays will indicate this.
2.2.7. Interpreting the alarm indicators
There are six alarm indicators at the right side of the front panel. An
indicator lights for each of the following alarm conditions:
•
•
•
•
•
•
HIGH DC VOLTAGE: lights whenever the dc output voltage exceeds
the specified alarm voltage setting. See section 2.3.4 to learn how to
adjust the HVDC alarm setting.
LOW DC VOLTAGE: lights whenever the dc output voltage is below
the specified alarm voltage setting. See section 2.3.4 to learn how to
adjust the LVDC alarm setting.
DC OUTPUT FAILURE: lights whenever the charger cannot provide
its full rated output voltage or its full rated output current. You cannot
adjust this alarm setting.
AC INPUT FAILURE: lights whenever the ac power supply to the
charger is interrupted.
POS GND: lights whenever leakage current from the battery positive
terminal to ground exceeds a specified threshold (see note).
NEG GND: lights whenever leakage current from the battery negative
terminal to ground exceeds a specified threshold (see note).
NOTE: You can adjust the sensitivity of the ground fault detection
from 5K to 50k ohms. Adjusting the ground fault sensitivity affects
the positive and negative ground fault sensitivities equally.
The indicators light immediately when an alarm occurs. The AT10.1 also
has a summary alarm relay with one form C contact, rated 0.5A @ 125
Vac/Vdc. If an alarm condition lasts for 30 seconds or longer, the
summary alarm relay contact transfers. When the alarm condition is
corrected, the relay and all indicators reset automatically.
29
OPERATING THE AT10.1
2.3.
SETTING PARAMETERS IN THE AT10.1
2.3.1. Understanding Parameter Settings
You can change the settings of the AT10.1 while the charger is operating,
using the front panel controls. The changes you make take effect
immediately, and are saved internally. If the charger is taken out of
service, and then later returned to service, it restarts using the last values
you set. You can adjust the following parameters:
•
•
•
•
•
•
•
Float voltage
Equalize voltage
Equalize timer (in hours)
High dc voltage alarm setting
Low dc voltage alarm setting
Current limit value (in Amperes)
High dc voltage shutdown feature (on or off)
Your choice of equalize method is also saved internally.
When you want to change any parameter, press the EDIT/ENTER key to put
the AT10.1 into EDIT mode. The meter display flashes about once per
second, and the status indicators prompt you to adjust the respective
parameter. You adjust each parameter by pressing the UP or DOWN key
until the reading you want shows on the meter display. You can make the
display scroll up or down continuously by pressing and holding the UP or
DOWN key.
You cannot exceed certain upper and lower limits for the operating
parameters. To see what the limits are for your charger, refer to the
AT10.1 Specifications in Appendix A on page 70.
When you first press the EDIT/ENTER key, the AT10.1 prompts you to
adjust the first parameter in the list above (float voltage). When you obtain
the value you want on the display, press the EDIT/ENTER key again. The
AT10.1 saves the new setting internally, and then prompts you to adjust
the second parameter. You continue this way to adjust the first six
parameters in the list above. If you want to skip adjusting any parameter,
just press the EDIT/ENTER key again. The AT10.1 moves to the next
parameter.
When you are finished adjusting the sixth parameter (current limit), press
the EDIT/ENTER key again. The AT10.1 saves all adjustments you made
internally, and reverts to normal operation. The new settings take effect
immediately.
Edit mode ends automatically if you don't press any front panel key within
25 seconds, and any change you made to the last setting is not saved.
30
OPERATING THE AT10.1
2.3.2. Setting the Float and Equalize voltages
• Press the EDIT/ENTER key.
The FLOAT and DC VOLTS indicators light, and the display flashes the
present value of the float voltage. Press and release the UP or DOWN key to
increase or decrease the value in the display by one count, or press and
hold the UP or DOWN key to scroll the value in the display upward or
downward. When the display shows the float voltage you want to set,
release the UP or DOWN key. If you go past the voltage you want, press the
UP or DOWN key again to reach the voltage you want to set.
•
Press the EDIT/ENTER key. The new float voltage setting is saved
internally.
The EQLZ and DC VOLTS indicators light, and the display flashes the
present value of the equalize voltage. Press and release the UP or DOWN
key to increase or decrease the value in the display by one count, or press
and hold the UP or DOWN key to scroll the value in the display upward or
downward. When the display shows the equalize voltage you want to set,
release the UP or DOWN key. If you go past the voltage you want, press the
UP or DOWN key again to reach the voltage you want to set.
•
Press the EDIT/ENTER key. The new equalize voltage setting is saved
internally.
If you want to adjust the equalize timer duration, skip to section 2.3.3.
OR
If you want to exit the Edit mode now, press the EDIT/ENTER key four more
times until the charger returns to normal operation.
Edit mode ends automatically if you don't press any front panel key within
25 seconds, and any change you made to the last setting is not saved.
31
OPERATING THE AT10.1
2.3.3. Setting the Equalize Timer
• Press the EDIT/ENTER key until the EQLZ HRS REMAINING,
MANUAL TIMER and AUTO EQLZ TIMER indicators light, and the
display flashes the present value of the equalize timer duration in hours.
Press and release the UP or DOWN key to increase or decrease the value in
the display by one count, or press and hold the UP or DOWN key to scroll
the value in the display upward or downward. When the display shows the
equalize time, in hours, that you want to set, release the UP or DOWN key.
If you go past the number of hours you want, press the UP or DOWN key
again to reach the number you want to set.
If you set the equalize time to zero hours, the equalize mode is disabled.
•
Press the EDIT/ENTER key. The new equalize timer duration is saved
internally. The timer setting works for both the manual timer and the
auto-equalize timer.
If you want to adjust the alarm settings, skip to section 2.3.4.
OR
If you want to exit the Edit mode now, press the EDIT/ENTER key three
more times until the charger returns to normal operation.
2.3.4. Setting the Alarms
After you save the equalize timer setting, the Edit mode automatically
prompts you to adjust the high dc voltage and low dc voltage alarms.
There is a red indicator on the front panel of the AT10.1 for each of the
following alarm conditions:
•
•
•
•
•
•
High DC Voltage
Low DC Voltage
DC Output Failure
AC Input Failure
Ground Fault Detection (+)
Ground Fault Detection (-)
The indicators light immediately when an alarm occurs. The AT10.1 also
has a summary alarm relay with one form C contact rated 0.5A / 125
Vac/Vdc. If an alarm condition lasts for 30 seconds or longer, the
summary alarm relay contact transfers. When the alarm condition is
corrected, the relay and all indicators reset automatically. The relay
contact also transfers if the AT10.1 detects certain errors, and displays
E 03, E 06, E 07 or E 10 on the front panel meter.
32
OPERATING THE AT10.1
Setting the High DC Voltage Alarm
• Press the EDIT/ENTER key until the HIGH DC VOLTAGE indicator
flashes, and the display flashes the present value of the high dc voltage
alarm.
Press and release the UP or DOWN key to increase or decrease the value in
the display by one count, or press and hold the UP or DOWN key to scroll
the value in the display upward or downward. When the display shows the
high dc voltage alarm point that you want to set, release the UP or DOWN
key. If you go past the voltage you want, press the UP or DOWN key again
to reach the voltage you want to set.
•
Press the EDIT/ENTER key. The new high dc voltage alarm setting is
entered into permanent memory.
Setting the low DC Voltage Alarm
• Press the EDIT/ENTER key until the LOW DC VOLTAGE indicator
flashes, and the display flashes the present value of the low dc voltage
alarm.
Press and release the UP or DOWN key to increase or decrease the value in
the display by one count, or press and hold the UP or DOWN key to scroll
the value in the display upward or downward. When the display shows the
low dc voltage alarm point that you want to set, release the UP or DOWN
key. If you go past the voltage you want, press the UP or DOWN key again
to reach the voltage you want to set.
•
Press the EDIT/ENTER key. The new low dc voltage alarm setting is
entered into permanent memory.
If you want to adjust the current limit setting, skip to section 2.3.5.
OR
If you want to exit the Edit mode now, press the EDIT/ENTER key again to
return the charger to normal operation.
33
OPERATING THE AT10.1
Adjusting Ground Detection Sensitivity
You can adjust the sensitivity of
the ground detection alarm circuit.
You must have a test resistor
whose value is the sensitivity you
want. You can adjust the
sensitivity from 5 to 50 kΩ.
The potentiometer for adjusting
ground detection circuit
sensitivity is located on the main
control circuit board. It is the
lower of the two potentiometers
labeled RA3 SENS, as shown in
the figure at the right.
NOTE: Do not try to adjust the upper potentiometer labeled RA2
BALANCE. This adjustment is made at the factory for proper
circuit operation.
CAUTION: Before connecting or disconnecting a test resistor,
de-energize and lock out all ac and dc voltage sources to the
AT10.1. Check with a voltmeter before proceeding. Restart the
AT10.1 only when necessary to make the sensitivity adjustment.
If your battery is grounded, do not attempt this procedure.
Remove the safety cover. Connect
the test resistor between TB1(+)
and chassis ground, as shown to
the right. Adjust RA3
counterclockwise until the front
panel indicator goes out, then
adjust slowly clockwise until the
POS GND indicator just lights.
Make this adjustment slowly; the
indicator is updated once in every
four seconds. De-energize and
lock out power to the AT10.1,
then remove the test resistor and
verify that the indicator goes out.
Now connect the test resistor between TB1(-) and chassis ground. Verify
that the NEG GND indicator lights. If not, adjust RA3 clockwise until it
does. Remove the test resistor.
34
OPERATING THE AT10.1
Disabling the Ground Detection Alarm
You can disable the ground detection alarm circuit, and isolate the circuit
from chassis ground. If your battery is normally grounded, or you want to
defeat the alarm for any other reason, follow these steps:
•
•
De-energize and lock out all ac and dc voltage sources to the AT10.1.
Check with a voltmeter before proceeding. This includes remote sense
wires if they were installed.
Open the AT10.1 front panel, and locate jumper J5 at the top left of the
Control Circuit Board (shown on the previous page). Move the jumper to
the DISABLE position. The POS GND and NEG GND indicators and
the summary alarm relay will not respond to a ground fault.
Restart the AT10.1, following the instructions in section 2.1.
2.3.5. Setting the current limit value
The AT10.1 automatically limits its dc output current in case of overload
or battery discharge. You can adjust the value of the current limit from
50% to 110% of rated current. The factory setting is 110%.
The current limit adjustment is the last step in the normal Edit sequence. If
the AT10.1 is not in the Edit mode, press the EDIT/ENTER key five times,
until the meter display flashes the value of current limit, in Amperes. Press
and release the UP or DOWN key to increase or decrease the value in the
display by one count, or press and hold the UP or DOWN key to scroll the
value in the display upward or downward. When the display shows the
current limit value that you want to set, release the UP or DOWN key. If you
go past the number you want, press the UP or DOWN key again to reach the
number you want to set.
•
Press the EDIT/ENTER key. The new current limit setting is saved
internally.
Edit mode ends automatically if you don't press any front panel key within
25 seconds, and any change you made to the last setting is not saved.
35
OPERATING THE AT10.1
2.3.6. Enabling the High DC Voltage shutdown feature
The AT10.1 has a built-in high dc voltage shutdown feature. In case of
any maladjustment or internal failure that results in a continuous output
voltage that is too high, the AT10.1 shuts down after 30 seconds to protect
the battery. The digital display reads E 03, and the summary alarm relay
contact transfers.
The AT10.1 is shipped with the high dc voltage shutdown feature disabled.
You can adjust the high dc voltage shutdown
(the setting is the same as the high dc voltage
alarm setting). Refer to section 2.3.4.
The charger must be in normal operation (not
the Edit mode) to enable the high dc voltage
shutdown.
To enable the shutdown feature:
•
•
Press and hold the UP key, then
Press the CHRG MODE key.
Parallel Operation
If two (or more) AT10.1
chargers are connected in
parallel, both sense the
output voltage. If one
charger runs away, it will
supply all the output
current; the other has zero
output current. The high dc
voltage shutdown does not
operate in a charger with
zero output current, so that
only the defective charger
(of two or more in parallel)
shuts down. The other
charger continues to supply
the load normally.
The HIGH DC VOLTAGE indicator lights, and
the display flashes ON. You can toggle the
shutdown feature OFF and ON by pressing the
CHRG MODE key repeatedly.
If you don't press any key within 4 seconds, the last state indicated (ON or
OFF) is saved internally. Note that you don't use the EDIT/ENTER key for
this feature.
If the AT10.1 shuts down because of a high dc voltage, the meter display
shows error code E 03. Reset the charger by turning the ac breaker off,
then on again.
36
OPERATING THE AT10.1
2.3.7. Adjusting the Voltmeter Accuracy
The AT10.1 voltmeter is adjusted at the factory to display the actual
output voltage within ±1%. If you replace any component that affects
meter accuracy, such as the main control PC board or R4, you should
readjust the meter. This adjustment procedure is different from all others,
because the meter reading remains constant, while the output voltage of
the charger changes. Do this adjustment with a fully charged battery and
with no load connected.
First, use the Edit procedure to adjust the float voltage to the desired
value. See section 2.3.2 for instructions on setting the float voltage.
Second, press and hold the UP key, then press the EQLZ MTHD key.
The DC VOLTS METER MODE indicator will light, and the meter display
flashes the output voltage reading. Measure the output voltage of the
AT10.1 using a dc meter accurate to ±0.25% or better.
While watching the meter connected to the AT10.1 output (not the front
panel meter), press the UP or DOWN key until the actual output voltage
matches the float setting on the front panel meter.
Each time you press UP or DOWN , you change the AT10.1 output voltage
by a small amount. Continue to press UP or DOWN until the actual output
voltage agrees with the front panel reading within ±1%
NOTE: Allow one or two seconds for the output voltage to stabilize
each time you press the UP or DOWN key.
When you are finished adjusting the output voltage, the AT10.1 waits 5
seconds, then the display returns to normal operation.
37
OPERATING THE AT10.1
2.3.8. Using the Low Level Detector (LLD)
The AT10.1 charger is equipped with a summary alarm safety override
circuit. This safety feature forces the summary alarm (common alarm)
relay contact to transfer, sending an alarm, even if there is a catastrophic
failure of the control circuitry. A low battery voltage triggers the safety
circuit.
If you have a dc power supply, you can adjust the battery voltage that
triggers the alarm. On the back of the main control circuit board, find the
potentiometer RA1, as shown in the figure below.
Disconnect all ac and dc power sources from the AT10.1, and connect
your dc power supply to the output terminals (positive of the supply to the
positive output of the charger). Adjust the power supply to the voltage that
you want to activate the alarm.
NOTE: You need at least 50% of the nominal output voltage to power the
circuit board.
Adjust RA1 until the alarm just activates. There is a red LED indicator
next to RA1 that indicates when the alarm is active.
38
OPERATING THE AT10.1
2.3.9. Using the front panel security feature
The AT10.1 charger is shipped with all the front panel keys enabled. You
can disable these front panel functions:
• Selecting Equalize method
• Changing settings using the EDIT/ENTER key
• Toggling the high dc voltage shutdown feature
Open the front panel, and locate the small plastic jumper J9 on the right
side of the main control board. See the figure below.
Move the jumper to the DISABLE position. Now, only the front panel
METER MODE and CHRG MODE keys work. All indicators still work normally.
39
OPERATING THE AT10.1
2.4.
Performing routine maintenance
WARNING:
High voltages appear at several points inside the battery charger. Use
extreme caution when working inside the charger. Do not attempt to
work inside the charger unless you are a qualified technician or
electrician.
Disconnect and lock out all power to the battery charger before starting
any maintenance procedures. Turn the ac power off at the distribution
panel upstream from the battery charger. Disconnect the battery from
the charger output terminals.
2.4.1. Keep it clean
The AT10.1 charger is cooled by natural convection. At least once a year,
vacuum the vents at the top and bottom of the enclosure to ensure that
there is an adequate supply of cooling air. If you have an extremely dusty
environment (especially if airborne dust is conductive), carefully vacuum
out the interior. Be sure to clean surfaces of circuit boards, and around
electrical terminals.
The AT10.1 is rated for operation up to 122° F / 50° C. If your charger is
in a warmer environment, or at an elevation over 3000ft / 914m, contact
your sales representative for operating information.
2.4.2. Check power and signal connections
Check the tightness of all field connections inside the charger, and
connections to the battery. A loose or corroded connection at the battery
terminals can be a fire or explosion hazard, and may cause erroneous
operation of the AT10.1 charger.
2.4.3. Check remote sense wiring (optional)
If you wired the AT10.1 charger for remote sense, check the signal
connections to the battery or load, and check the wiring to be sure the
insulation is in good condition. If there is a failure of the remote sense
signal wiring, the AT10.1 charger displays the error code E 06, and goes
back to local control, sensing the output voltage at the charger output
terminals.
40
OPERATING THE AT10.1
2.4.4. Check temperature compensation probe (optional)
If you are using the optional temperature compensation probe, be sure that
the probe is securely installed. Be sure the connectors and the wiring from
the probe to the AT10.1 charger are in good condition.
If there is a failure of the temperature compensation probe, or the wiring,
the AT10.1 charger displays the error code E 08.
2.4.5. Measuring the output ripple voltage (filtered models only)
If your AT10.1 charger is a filtered model, at least once a year measure
the ac ripple voltage at the battery terminals. Use an rms responding ac
voltmeter.1 The ripple voltage should be no higher than shown in the
specifications in Appendix A on page 70, if the battery ampere-hour
capacity is at least 4 times the output current rating of the charger.
If you suspect that the output ripple voltage is too high, see "Output ripple
voltage too high" of the Troubleshooting Chart in section 3.4, page 53.
2.4.6. Viewing the voltage and alarm settings
You can review the parameter settings in the AT10.1 charger by pressing
the EDIT/ENTER key on the front panel. Each time you press the key, a
different parameter displays, in the following order:
•
•
•
•
•
•
1
Float voltage
Equalize voltage
Equalize time (in hours)
High dc voltage alarm setting
Low dc voltage alarm setting
Current limit, in Amperes
Don't use a dc voltmeter. The ripple voltage on a battery is a very small ac voltage.
41
OPERATING THE AT10.1
SAMPLE PREVENTIVE MAINTENANCE PROCEDURE
AT10.1 BATTERY CHARGER
Suggested frequency: every 6 months
Maintenance date
Step
Instructions
(standard features)
Clean battery
charger
•
•
Check all
electrical
connections
and wiring
•
•
•
Check ac input
voltage
•
Check dc
output voltage
•
Check ripple
voltage
Test font panel
indicators
Test common
alarm relay
42
Performed by
•
•
•
All vents clean and open.
Remove dust and debris from inside of
unit.
TB1 connections all tight.
Internal wiring connections tight, slip-on
connectors fully seated. Wire and lug
insulation in good condition.
Terminations at battery or bus are tight
and corrosion free.
Measure at TB1-L1 and TB1-L2 using ac
voltmeter. Must be within +10%, -12% of
nominal.
Measure at TB1(+) and TB1(-) using dc
voltmeter. Should agree with front panel
voltmeter within 1%, and must be correct
values for your battery. If the AT10.1 is
using a temperature compensation probe,
see the graph on page 23 to determine the
correct battery voltage. You need to know
the battery temperature for this step.
Measure at battery terminals using ac
voltmeter set to millivolts scale. Check
against specification in Appendix A on
page 70.
Press LAMP TEST key on front panel.
Press LAMP TEST key and hold for 4
seconds. Common alarm relay will
transfer.
Results
o OK
o OK
o OK
o OK
o OK
Input
Vac
Float
Vdc
Equal.
Vdc
Ripple
mVac
o OK
o OK
OPERATING THE AT10.1
Exercise front
panel controls
•
•
•
•
•
Check voltage
and alarm
settings
•
Final checks
•
•
•
Step
Instructions
(optional features)
Test auxiliary
alarm relays
Check
integrity of
remote sense
or temperature
compensation
wiring
Switch from float to equalize, then back to o OK
float.
Turn off the dc circuit breaker. E 07
o OK
should appear on display (requires at least
5% of rated output current). Reset
breaker.
Cycle through meter modes.
o VOLTS OK
o AMPS OK
o HOURS OK
Cycle through equalize methods.
o MANUAL TIMER OK
o MANUAL EQLZ OK
o AUTO EQLZ TIMER OK
Turn off ac circuit breaker. The AC INPUT o Alarm OK
FAILURE indicator should light. Reset
breaker.
Use EDIT/ENTER key to scroll through
o FLOAT OK
settings.
o EQUALIZE OK
o HVDC alarm OK
o LVDC alarm OK
Adc
Current limit
Be sure safety cover is in place.
o OK
Restore charger to normal operation.
o OK
Close latch on front panel; close padlock
o OK
if installed.
•
•
•
•
Press LAMP TEST key and hold for 4
seconds. Alarm relays will transfer.
Remote sense wiring.
Temperature compensation wiring.
Temperature compensation probe.
Results
o OK
o OK
o OK
o OK
A full-size reprint of this Preventive Maintenance Procedure is available.
Ask your sales representative for form JD0064.
43
SERVICING THE AT10.1
3. SERVICING THE AT10.1
3.1. A STEP-BY-STEP TROUBLESHOOTING PROCEDURE
The AT10.1 battery charger is fully tested and calibrated at the factory and
should work for years with a minimum of attention. If you do encounter
trouble, there are three steps you should take to find the problem and
return the charger to service.
1. Check the front panel meter for an error code. The AT10.1 is able to
diagnose common problems with the battery charger, or with the application
or installation. If the front panel displays an error code, see section 3.2,
Interpreting Front Panel Error Messages, for help in interpreting the code
and solving the problem.
2. If the charger does not work properly, but there is no front panel error code,
turn off the front panel circuit breakers (or disconnect ac and dc power
externally). Then turn the dc and ac power back on. This will return the
charger to normal operation as long as there is no internal component failure.
Note: Do this only once. If the charger does not resume
normal operation, go to the next step.
3. If the charger still does not work properly, make a list of the symptoms that
you observe, then turn to Using the troubleshooting chart in section 3.3. The
troubleshooting chart relates common trouble symptoms to their causes, and
gives the proper procedures for correcting the problem.
4. If the symptom doesn't appear on the troubleshooting chart, or if the
recommended repair doesn't work, consult your sales or service
representative to arrange for on-site or factory service.
44
SERVICING THE AT10.1
3.2. INTERPRETING FRONT PANEL ERROR MESSAGES
If the AT10.1 control circuit detects a hardware or wiring problem, it may
display an error code on the front panel. To solve the problem, use the
table starting below, which lists the error codes and the procedures to use.
WARNING:
High voltages appear at several points inside the battery charger. Use
extreme caution when working inside the charger. Do not attempt to
work inside the charger unless you are a qualified technician or
electrician.
Disconnect and lock out all power from the battery charger before
starting to remove or replace any components. Turn the ac power off at
the distribution panel upstream from the battery charger. Disconnect the
battery from the charger output terminals.
Error
Code
E 01
Meaning
Repair Procedure
Resistor R2
open or
defective
Resistor R2 is installed at the back of the front panel, in the control
circuit board input connector. R2 is measured by the control circuit on
startup, and is used to determine some of the AT10.1 charger's
parameters, such as the float voltage.
If the AT10.1 finds that R2 is defective, it must be replaced. See
section 3.6 for parts ordering information. When you have completed
the repair, restart the charger according to section 2.1.
E 02
Short circuit on
output
You may get this error code if the battery is discharged to less than 6
volts. When the battery charges to greater than 6 volts, the error code
disappears. If you have a seriously discharged battery, allow the
charger to run for 24 hours and check the battery voltage again. If it
has not increased to the normal voltage rating, consult the battery
manufacturer for help.
If the battery voltage is normal, then check the wiring at the dc output
terminals for a short circuit.
If the battery voltage is normal and all external wiring is OK, check the
dc breaker on the charger. If it is tripped, try once to reset it. If it trips
again immediately, there may be an internal short circuit in the
charger. Check the internal wiring. If the charger is filtered, check the
dc filter capacitors and the polarity diode.
The AT10.1 normally recovers automatically from an E 02 condition. If
you have shut down the charger for service, restart it according to
section 2.1.
E 03
High DC
Voltage
Shutdown
To restart the charger, turn the ac breaker off, then on. Check the
Equalize voltage and High DC Voltage alarm settings. The alarm
setting must be higher than the Equalize voltage setting.
If you get another High DC Voltage shutdown after a few minutes of
operation, there may be an internal component failure. See Charger
output not controllable of the troubleshooting chart in section 3.4.
45
SERVICING THE AT10.1
Error
Code
E 04
Meaning
Repair Procedure
Internal memory Any parameters that you set, such as Float or Equalize voltage, are
failure
saved internally. The internal memory is tested on startup. If the
memory test fails, E 04 appears on the front panel display. The error
may also appear if the controller was trying to write to the memory
while a power failure occured.
If an E 04 appears, try restarting the AT10.1 by turning the ac and dc
breakers off, then on. If the charger restarts normally, you must
reenter any changes you made to the factory settings (float voltage,
etc.).
If E 04 appears repeatedly, the internal memory has been damaged.
You must replace the control circuit board. See section 3.6 for parts
ordering information.
E 05
Not used
This error code was formerly used to indicate a reverse battery
connection. It is not available in the AT10.1.
E 06
R4 or R14 is
defective, or
remote sense
wiring failed
Locate R4 mounted on TB5, on the back of the front panel. Remove
the resistor and measure its value with an Ohmmeter (see table 3-1
for the correct value). If the resistor is not within 1% of the specified
value, it must be replaced.
Locate R14 inside the enclosure, connected to TB1(-). Remove the
lugged end and measure the resistor's value with an Ohmmeter (see
table 3-1 for the correct value). If the resistor is not within 1% of the
specified value, it must be replaced.
If you are using remote sense wiring from the battery to the AT10.1,
the wiring may have failed. The usual failure is an open circuit; a short
circuit will usually be indicated by smoke or fire in the wiring.
The AT10.1 charger displays the error code if it detects this wiring
failure. You should respond to this problem quickly to be sure that the
AT10.1 regulates the output voltage properly. Wire an annunciator
(buzzer, e.g.) to the summary alarm relay TB3 to get a remote
indication of any charger problem, or monitor the charger operation
using the optional DNP-3/MODBUS communications board.
If you have a failure in remote sense wiring, the AT10.1 regulates its
output voltage locally until you correct the problem, see section 1.9.
The locally controlled voltage may not reflect the true requirements of
the battery.
When you complete the repair, restart the charger as described in
section 2.1.
E 07
DC breaker
If the dc breaker is open, open the ac breaker, then reclose the dc
open, or internal and ac breakers. If the dc breaker trips again, see the troubleshooting
failure
chart in section 3.4.
If the dc breaker is closed, but you have an E 07 display, check your
battery. If the battery is disconnected, and you then disconnect the
load, the charger may display an E 07 code. Restart the charger
according to section 2.1.
If the battery and load are OK, see the troubleshooting chart in
section 3.4 for help in locating the problem.
46
SERVICING THE AT10.1
Error
Code
E 08
Meaning
Repair Procedure
Defective
temperature
compensation
probe
If a temperature compensation probe is connected to the AT10.1, the
control circuit detects the probe on startup, and uses the temperature
measured by the probe to control the output voltage of the charger.
To understand temperature compensation, see section 1.11.
If the temperature compensation probe, or the wiring that connects it
to the AT10.1, fails during normal operation, the AT10.1 detects the
failure, and shows E 08 on the front panel meter.
Disconnect the wiring from the probe, and measure the resistance of
the probe with an Ohmmeter. The resistance should be approximately
10,000 Ohms at normal room temperature (77° F / 25° C). If the
probe reads open or shorted, it needs to be replaced.
If the probe checks good, examine the wiring between the probe and
the AT10.1. Also check the connection of the cable to the control
circuit board on the back of the front panel. If the wiring is OK, then
the probe needs to be replaced. Once you have replaced the probe,
you must restart the AT10.1 to activate temperature compensation.
E 09
Misadjusted
current limit
The output current limit is set at the factory to 110% of the rated
output current (e.g., for a 20 Adc charger, the current limit is set to 22
Adc). You can adjust the current limit downward to as low as 50% of
the output current, if you have special requirements such as limited
ac power available. You should do this only if the normal dc load on
the system is smaller than the current limit.
If the load current becomes larger than the current limit setting, the
battery will not charge properly. The charger displays E 09. You
should increase the current limit setting to supply the current required
by the load.
NOTE: The common alarm relay is not set for this condition.
E 10
Open internal
feedback loop
A redundant internal feedback loop (control loop) is provided as
redundancy, to increase reliability when remote sensing is used. If
there should be a problem with the internal loop wiring, the charger
displays E 10. Check the internal wiring in the signal harness,
especially wire # 33. Also check the harness connector on the main
control circuit board.
A 02
Equalize mode
inhibited
If you set the equalize timer to zero hours, the equalize mode is
inhibited. When you try to put the charger into equalize mode with a
front panel control, the display shows the message A 02. If you want
to enable the equalize mode, set the equalize timer to 1 or more
hours.
47
SERVICING THE AT10.1
3.3. USING THE TROUBLESHOOTING CHART
WARNING:
High voltages appear at several points inside the battery charger. Use
extreme caution when working inside the charger. Do not attempt to
work inside the charger unless you are a qualified technician or
electrician.
Disconnect and lock out all power from the battery charger before
starting to remove or replace any components. Turn the ac power off at
the distribution panel upstream from the battery charger. Disconnect the
battery from the charger output terminals.
Before you try to use the troubleshooting chart, be sure that you have
followed the steps in section 3.1.
The troubleshooting chart that begins on the next page is divided into
three columns. To use the chart:
1. Make a list of the charger's condition, including the trouble symptoms.
2. Find the symptom(s) in the first column of the chart.
3. The middle column contains common causes for the problem you observe, in
order of probability.
4. Follow the action described in the right-hand column to correct the problem
and return the charger to normal service.
Determining the condition of the charger:
•
•
•
•
•
•
•
•
•
Is the front panel AC ON indicator lit?
What is the ac voltage at the input terminals (measured with an ac
voltmeter)?
What is the dc voltage at the output terminals (measured with a dc
voltmeter)?
Does the meter on the front panel display any voltage or current?
Are any alarm indicators lit?
Do the front panel status indicators work (Charge Mode, for example)?
Can you change the charger to the Equalize mode and back to Float?
Is the charger making any noise? Is it unusually loud?
Is there any sign or smell of smoking or burning?
Refer to the wiring diagrams and parts layout drawings in Appendix C
while using the chart. For instructions on replacing components, see
section 3.5.
48
SERVICING THE AT10.1
3.4. TROUBLESHOOTING CHART
SYMPTOM
PROBABLE
CAUSE
AC breaker
trips
immediately
1. Shorted
rectifier diode
or SCR
RECOMMENDED ACTION
1. Test by disconnecting wire # 12 from the rectifier assembly.
Measure resistance between the two top rectifier terminals
(labeled "AC" on the wiring diagram); it should be at least
100,000 Ohms (check both polarities). Replace rectifier
assembly if resistance is low in either direction.
2. Check spacing of terminals; check wiring for signs of
insulation damage, burns, etc. Repair as necessary.
2. Defective
wiring to T1 or
to the rectifier
heat sink
assembly
3. Test by disconnecting wires from X1, X4, Y1 and Y2. If ac
3. Defective
transformer T1 breaker still trips, replace T1.
AC breaker
trips after a
few minutes
1. Loose
connection to
breaker
2. Wrong ac
voltage, or T1
taps miswired
3. Open SCR
4. SCR not
controllable
DC breaker
trips
immediately
1. Battery
connected with
reverse polarity
2. Defective
rectifier bridge
(if unfiltered
charger)
3. Defective
free-wheeling
diode in SCR
module A16
4. Defective
polarity diode
(if filter
assembly is
installed)
5. Defective
wiring
1. Check and tighten connections as required.
2. Be sure the T1 primary taps are wired correctly for your
input voltage. See section 1.6 for details.
3. Use a clamp-on ammeter to measure the current in wire #
11 or # 12. If it less than 70% of the dc output current, one of
the SCRs or diodes is defective. Replace the rectifier module.
4. Disconnect wire # 24 from terminal E3 of the rectifier
assembly (near the left front of the enclosure). Restart the
charger. If You are able to measure output current, one of the
SCRs is defective. Replace the rectifier assembly.
1. Check and correct battery wiring if necessary.
2. Test by disconnecting wire # 12 from the rectifier assembly.
Measure resistance between the two top rectifier terminals
(labeled "AC" on the wiring diagram); it should be at least
100,000 Ohms (check both polarities). Replace rectifier
assembly if resistance is low in either direction.
3. Remove wire # 13 from the rectifier control pc board A3.
Test the SCR module's internal free-wheeling diode by
measuring the resistance from E2 to E10 on A3 with an
Ohmmeter. The reading should be at least 100,000 Ohms in
one polarity, and less than 1,000 Ohms in the other polarity.
Replace the entire A16 SCR module if it is defective.
4. Remove wire # 15 from terminal E14 on the CR1 heat sink.
Measure the resistance from the heat sink to E8 on the
rectifier control pc board at the left front of the charger (check
both polarities). If the resistance is less than 1,000 Ohms in
both directions, replace the filter assembly.
5. Check spacing of terminals; check wiring for signs of
insulation damage, burns, etc. Repair as necessary.
49
SERVICING THE AT10.1
SYMPTOM
DC breaker
trips after a
few minutes
No output
current, but
ac and dc
breakers are
on; AC ON
lamp is out
PROBABLE
CAUSE
1. Loose
connection to
breaker
2. Open SCR
RECOMMENDED ACTION
1. Check and tighten connections as required.
2. Use a clamp-on ammeter to measure the current in wire #
12 or # 11. If it less than 70% of the dc output current, then
one of the SCRs or diodes is defective. Replace the rectifier
module.
3. Disconnect wire # 24 from terminal E3 of the rectifier
3. SCR not
assembly (near the left front of the enclosure). Restart the
controllable
charger. If You are able to measure output current, one of the
SCRs is defective. Replace the rectifier assembly.
4. If the front panel meter shows more than 110% of rated dc
4. Defective
current, the control board may be defective. Disconnect wire #
control circuit
24 as above. If the output current goes to zero, replace the
board A1
control board.
1. If AC ON indicator is out, check feeder circuit breaker or
1. AC supply
failure
fuse.
2. Input fuse F1 2. Remove F1 from its fuseholder (located on the bottom of the
is blown (480
enclosure) and check with an Ohmmeter or fuse tester.
Vac input only) Replace if required.
NOTE: If the new fuse blows, see the sections titled "AC
breaker trips immediately" and "AC breaker trips after a few
minutes" for further troubleshooting hints.
3. Defective
3. Check terminals and wiring between T1 and the rectifier
wiring
assembly, inductor L1, dc filter (if present), the dc breaker, and
the output terminals. Check wire # 29 from T1-Y1 and wire #
28 from T1-Y2 to the control circuit board connector J1. Repair
as necessary.
4. Defective
4. Use an ac voltmeter to measure the ac voltage from T1-X1
transformer T1 to X4. It is normally 50% to 80% higher than the rated dc
output voltage. If it is too low, check the wiring of the primary
taps. See section 1.6 for details. If it is zero, replace T1.
50
SERVICING THE AT10.1
SYMPTOM
No output
current, but
ac and dc
breakers are
on; AC ON
lamp is on
PROBABLE
CAUSE
1. Battery is
fully charged
2. Float or
Equalize
voltage set too
low
3. Wrong ac
input voltage,
or T1 taps miswired
4. Defective
wiring
RECOMMENDED ACTION
1. This is normal operation in a system with little or no dc load.
As long as the charger maintains Float voltage, it is operating
normally.
2. Check the Float and Equalize voltages and adjust them if
necessary. Consult your battery manufacturer for the proper
voltage settings.
3. Be sure the T1 primary taps are wired correctly for your
input voltage. See section 1.6 for details.
4. Check terminals and wiring between T1 and the rectifier
assembly, inductor L1, dc filter (if present), the dc breaker, and
the output terminals. Repair as necessary.
5. Defective
5. Use an ac voltmeter to measure the voltage between
rectifier bridge terminals E3 and E4 of the rectifier circuit board nearest the
front of the charger. If you measure about 1.0 Vrms, but there
is no output current, replace the rectifier assembly.
6. Defective
6. If you do not measure any ac voltage in step 5 above, and
control circuit
the battery voltage is less than the Float voltage setting,
board A1
replace the control circuit board.
7. Defective
7. Use an ac voltmeter to measure the ac voltage from T1-X1
transformer T1 to X4. It is normally 50% to 80% higher than the rated dc
output voltage. If it is too low, check the wiring of the primary
taps. See section 1.6 for details. If it is zero, replace T1.
8. Disconnect the wiring from L1 and measure the resistance
8. Defective
inductor L1 or between the terminals. If it is an open circuit, replace L1.
Repeat for L2 if the optional dc filter is installed.
L2
9. Disconnect wire # 52 from L1 to CR2, then check CR2 with
9. Defective
an Ohmmeter (check both polarities). If CR2 is open, replace
CR2
the filter assembly. This is a very rare occurrence.
10. Disconnect the battery, and connect a light dc load to the
10. Defective
charger. Measure the dc voltage from the input terminal to the
dc breaker
output terminal of the circuit breaker, with the breaker on. It is
normally no more than 50 millivolts. If it is near the rated
output voltage, replace the breaker.
Front panel is
dead; ac and
dc voltages
are present at
TB1
1. Control
circuit board A1
is not
connected
2. Defective
control circuit
board A1
3. Defective
wiring
1. Make sure the connector at the top edge of the control
circuit board is firmly seated.
2. If the AC ON indicator is lit, but the rest of the front panel is
dead, replace the control circuit board.
3. Check the harness wiring to the control circuit board
connector for signs of insulation damage, burns, etc. Be sure
all wires are securely crimped in the connector.
51
SERVICING THE AT10.1
SYMPTOM
PROBABLE
CAUSE
RECOMMENDED ACTION
1. Use a dc voltmeter to measure the dc voltage from E17 on
the I/O panel to TB1(-). It is normally 12 Vdc when the rated
output voltage is at TB1(+) and TB1(-). Remove all power from
the charger, and measure the resistance from TB1(+) and
E17. See the table in section 3.6 for the proper resistance
values. If the resistance is not within 10% of the table value,
replace R3.
2. Remove the enclosure shroud, and check the wiring to and
2. Defective
from TB1 and the control circuit board for signs of insulation
wiring
damage or burns. Repair any damaged wiring.
1. Disconnect wire # 24 from terminal E3 of the rectifier
1. Defective
SCR
assembly (near the left front of the enclosure). Restart the
charger. If You are able to measure output current, one of the
SCRs is defective. Replace the rectifier assembly.
2. R4 or R14 is 2. Remove one end of R4 from TB5 (on the back of the front
defective, or
panel). Repeat for R14 connected to TB1(-). Measure their
wrong value
values with an Ohmmeter. See the table in section 3.6 for
resistance values. If either resistor is not within 1% of the
specified value, it must be replaced.
3. Defective
3. Remove the leads from the probe and measure its
temperature
resistance. At 77° F / 25° C the resistance should be about
compensation 10,000 Ohms. If it is not, replace the probe assembly.
probe (optional)
4. If the front panel meter shows more than 110% of rated dc
4. Defective
current, the control board may be defective. Disconnect wire #
control circuit
24 from terminal E3 of the rectifier assembly (near the left front
board A1
of the enclosure). Restart the charger. If the output current
goes to zero, replace the control board.
Front panel
1. Defective
dies during ac power resistor
power failure; R3
dc voltage is
present at
TB1
Charger
output
voltage too
high, not
controllable
Output
voltage does
not agree
with front
panel meter
52
1. Temperature
compensation
probe is
installed
1. If the optional temperature compensation probe is installed,
the output voltage may be different from the selected float or
equalize voltage. The difference in the voltages depends on
the probe temperature. The front panel meter always displays
the proper voltage for 77° F / 25° C.
2. Circuit board 2. Recalibrate meter as described in section 2.3.7.
or another
component may
have been
replaced
3. R4 or R14 is 3. Remove one end of R4 from TB5 (on the back of the front
panel). Repeat for R14 connected to TB1(-). Measure their
defective, or
wrong value
values with an Ohmmeter. See the table in section 3.6 for
resistance values. If either resistor is not within 1% of the
specified value, it must be replaced.
4. Turn off both front panel circuit breakers. Then turn on the
4. Defective
control circuit
dc breaker, followed by the ac breaker. If the charger still has
the wrong output voltage, replace the control circuit board.
board A1
SERVICING THE AT10.1
SYMPTOM
PROBABLE
CAUSE
1. Current limit
Charger
set too low
never
reaches float
(or equalize)
voltage
(within 1%)
2. Defective
battery or dc
load, or load is
too great
3. Wrong ac
input voltage, or
voltage too low,
or T1 wired
incorrectly
4. Defecive
rectifier bridge
5. Defective
control circuit
board A1
Input current
too high
1. Wrong ac
input voltage, or
transformer T1
wired
incorrectly
2. Defective
rectifier bridge
RECOMMENDED ACTION
1. If the AT10.1 is not in the Edit mode, press the EDIT/ENTER
key five times, until the meter display flashes the current limit
value (in Amperes). If the current limit is less than 110%,
adjust it to 110% as described. See Setting the Current Limit
Value, section 2.3.5 for details.
2. Check each cell of the battery. If one or more cells are
shorted, the charger may not be able to reach the Float
voltage. You may have the same problem if the normal load
current is more than the rated output current of the charger.
3. Make sure the T1 primary taps are wired correctly for your
input voltage. See Changing Transformer Taps, section 1.6 for
details. The actual ac input voltage must be at least 88% of the
rated value for the charger to produce full output power.
4. Use a clamp-on ammeter to measure the current in wire #
12 or # 11. If it less than 70% of the dc output current, one of
the SCRs or diodes is defective. Replace the rectifier module.
5. Turn off both front panel circuit breakers. Then turn on the
dc breaker, followed by the ac breaker. If the charger output
current is below the current limit value, but it still has the wrong
output voltage, replace the control circuit board.
1. Be sure the T1 primary taps are wired correctly for your
input voltage. See Changing Transformer Taps, section 1.6 for
details. The actual ac input voltage must be at least 88% of the
rated value for the charger to produce full output power.
2. Disconnect wire # 24 from terminal E3 of the rectifier
assembly (near the left front of the enclosure). Restart the
charger. If You are able to measure output current, one of the
SCRs is defective. Replace the rectifier assembly.
3. Defective T1 3. Test by disconnecting wires from X1, X4, Y1 and Y2. If ac
input current is still too high, replace T1.
Output ripple
voltage too
high
1. Charger is
unfiltered
1. Verify by checking nameplate against the ordering code on
the inside front cover. Order and install filter option if
necessary.
2. Battery is
2. Be sure battery is connected. Inspect battery according to
disconnected or the manufacturer's instructions.
defective
3. Battery too
3. Check the measured ripple against the specification for your
small for
AT10.1 model on page 70. The ripple rating is for a battery
charger rating whose Ampere-hours are four (4) times the charger ampere
rating. For a smaller battery, ripple voltage may be higher.
4. One or more 4. Test with capacitance meter; replace as necessary.
defective filter
capacitors, C1
or C2
53
SERVICING THE AT10.1
SYMPTOM
PROBABLE
CAUSE
Charger very 1. Loose
noisy
hardware or
enclosure panel
2. Defective
rectifier bridge
RECOMMENDED ACTION
1. Remove the enclosure shroud. Check and tighten all
component mounting hardware. Replace the shroud, being
sure all assembly hardware is secure.
2. Use a clamp-on ammeter to measure the ac current in wire
# 11 or # 12 (connected between T1 and the rectifier
assembly). If it less than 70% of the dc output current, one of
the SCRs or diodes is defective. Replace the rectifier module.
1. Turn off the charger. With a light dc load connected to the
battery, be sure each cell reads the nominal cell voltage (2.0V
for lead-acid; 1.25V for Ni-Cd). Restart the charger. Each cell
should now read the nominal Float voltage (2.2V for lead-acid;
1.35V for Ni-Cd).
2. Remove one end of R4 from TB5 (on the back of the front
2. Defective
scaling resistor panel). Repeat for R14 connected to TB1(-). Measure their
values with an Ohmmeter. See the table in section 3.6 for
R4 or R14
resistance values. If either resistor is not within 1% of the
specified value, it must be replaced.
3. If the output voltage is constant, replace the control circuit
3. Defective
board.
control circuit
board A1
Meter
readings are
erratic
1. Defective or
disconnected
battery
Lamp test key
doesn't work,
or some
lamps don't
light
1. No Vac
2. Control
circuit board A1
is not secured
to front panel
3. Defective
control circuit
board A1
1. The lamp test key doesn’t work during an ac power failure.
2. Open the front panel, and be sure that the control circuit
board is securely mounted on the standoffs on the back of the
panel. All indicators should extend about .125in / 3.2mm
through the front of the panel.
3. When you press the LAMP TEST key, if some but not all of
the indicators light, or the digital meter does not display all 8's,
replace the control circuit board.
One or more
front panel
keys don't
work
1. Front panel
is locked
2. Control
circuit board A1
is not secured
to front panel
3. Defective
control circuit
board A1
1. Open the front panel, and be sure that jumper J9 on the
main control board is in the ENABLE position.
2. Open the front panel, and be sure that the control circuit
board is firmly seated on the standoffs on the back of the
panel. Front panel keys must operate freely.
1. Check for
normal
operation of
both chargers
1. The AT10.1 is not designed to share the load current when
two or more chargers are connected in parallel, so it is normal
for one of a pair to have no output current. You can check the
operation of the "off" charger by increasing its Float voltage
until it starts to deliver output current. When you have finished
the test, be sure both chargers are set to the same Float and
Equalize voltages.
Two chargers
are
connected in
parallel, but
only one has
output current
54
3. Turn off both front panel circuit breakers. Then turn on the
dc breaker, followed by the ac breaker. If some of the front
panel keys still do not work, replace the control circuit board.
SERVICING THE AT10.1
SYMPTOM
PROBABLE
CAUSE
HIGH DC
1. High DC
VOLTAGE
Voltage alarm
indicator is on and Equalize
voltage settings
are mismatched
2. Defective
rectifier bridge
3. Defective
control circuit
board A1
RECOMMENDED ACTION
1. Be sure that the High DC Voltage alarm setting is higher
than the Equalize voltage setting. See sections 2.3.2 and
2.3.4.
2. Disconnect wire # 24 from terminal E3 of the rectifier
assembly (near the left front of the enclosure). Restart the
charger. If You are able to measure output current, one of the
SCRs is defective. Replace the rectifier assembly.
3. Turn off both front panel circuit breakers. Then turn on the
dc breaker, followed by the ac breaker. If the charger output
voltage is normal, but the HIGH DC VOLTAGE indicator is still
on, replace the control circuit board.
No alarm, but
output
voltage is
above High
DC Voltage
setting
1. Output
current is below
2%
2. Defective
control circuit
board A1
1. Output current must be greater than 2% of rated current to
produce a High DC Voltage alarm. See Parallel Operation in
section 2.3.6.
2. Turn off both front panel circuit breakers. Then turn on the
dc breaker, followed by the ac breaker. If the charger output
voltage is above the alarm setting, but the
HIGH DC VOLTAGE indicator still doesn't light, replace the
control circuit board.
LOW DC
VOLTAGE
1. Battery is
discharged
1. After an ac power failure, or a battery discharge for any
other reason, it may take several hours to recharge the
battery. It is normal for the LOW DC VOLTAGE indicator to be
on until the battery voltage is above the Low DC Alarm
voltage.
2. Be sure that the Low DC Voltage alarm setting is lower than
the Float voltage setting. See sections 2.3.2 and 2.3.4.
indicator is
on, but ac
and dc
breakers are
closed; ac
input voltage
is normal;
there is
output current
2. Low DC
Voltage alarm
and Float
voltage settings
are mismatched
3. Use a clamp-on ammeter to measure the current in wire #
3. Defective
rectifier bridge 11 or # 12. If it less than 70% of the dc output current, one of
the SCRs or diodes is defective. Replace the rectifier
assembly.
4. Turn off both front panel circuit breakers. Then turn on the
4. Defective
dc breaker, followed by the ac breaker. If the charger output
control circuit
voltage is normal, but the LOW DC VOLTAGE indicator is still
board A1
on, replace the control circuit board.
5. Defective dc 5. Disconnect the battery, and connect a light dc load to the
charger. Measure the dc voltage from the input terminal to the
breaker
output terminal of the circuit breaker, with the breaker on. It is
normally no more than 50 millivolts. If it is near the rated
output voltage, replace the breaker.
55
SERVICING THE AT10.1
SYMPTOM
PROBABLE
CAUSE
DC OUTPUT
FAILURE
1. Defective
rectifier bridge
RECOMMENDED ACTION
1. Use a clamp-on ammeter to measure the current in wire #
12 or # 11. If it is less than 70% of the dc output current, one
indicator is
of the SCRs or diodes is defective. Replace the rectifier
on, but ac
module.
and dc
2. Defective
2. Turn off both front panel circuit breakers. Then turn on the
breakers are
control circuit
dc breaker, followed by the ac breaker. If the charger output
closed; ac
voltage and current are normal, but the DC OUTPUT
board A1
input voltage
FAILURE indicator is still on, replace the control circuit board.
is normal
3. Defective
3. Use an ac voltmeter to measure the ac voltage from T1-X1
transformer T1 to X4. It is normally 50% to 80% higher than the rated dc
output voltage. If it is too low, check the wiring of the primary
taps. See section 1.6 for details. If it is zero, replace T1.
4. Defective dc 4. Disconnect the battery, and connect a light dc load to the
charger. Measure the dc voltage from the input terminal to the
breaker
output terminal of the circuit breaker, with the breaker on. It is
normally no more than 50 millivolts. If it is near the rated
output voltage, replace the breaker.
AC INPUT
1. If the ac input power fails, the front panel AC ON indicator
1. AC power
FAILURE
goes out, and the AC INPUT FAILURE indicator goes on.
failure
indicator is on
2. Be sure the front panel ac circuit breaker is closed. Measure
2. Upstream
the ac voltage at TB1-L1 and L2. If it is zero, check upstream
feed
breaker/fuse is distribution breakers and fuses.
tripped
3. Measure ac voltage at T1-H1 and T1-H5. It should be the
3. Defective
same as the ac supply voltage.
wiring
4. Turn off both front panel circuit breakers. Then turn on the
4. Defective
dc breaker, followed by the ac breaker. If the AC ON indicator
control circuit
is on, but the AC INPUT FAILURE indicator is still on, replace
board A1
the control circuit board.
56
SERVICING THE AT10.1
SYMPTOM
PROBABLE
CAUSE
POS GND or
NEG GND
1. Ground fault
on external dc
indicator is on bus
2. Ground
detection circuit
needs
calibration
3. Defective
wiring
4. Defective
control circuit
board A1
Summary
1. Defective
alarm relay is control circuit
in alarm
board A1
mode, but no
front panel
alarm
indicator is on
RECOMMENDED ACTION
1. Disconnect the charger from the battery and dc bus, and
check the battery and dc bus for a ground fault.
2. Calibrate the ground detection sensitivity. See section 2.3.4.
3. Disconnect the charger from the battery and dc bus. Turn
the charger on, and measure the voltage from TB1(+) to
chassis, and from TB1(-) to chassis. The voltage readings
should be equal, each approximately half of the total output
voltage. If there is more than a 10% imbalance, turn off the
charger, and inspect all wiring from TB1 to CB2, the optional
dc filter, L1, and the rectifier bridge. Look for evidence of
insulation damage, insufficient spacing between terminals and
chassis, or wires run too close to metal edges.
4. Turn off both front panel circuit breakers. Then turn on the
dc breaker, followed by the ac breaker. If you are sure there is
no ground fault on the external bus or within the charger, but
the POS GND or NEG GND indicator is still on, replace the
control circuit board.
1. Turn off both front panel circuit breakers (or turn off ac and
dc power externally if the charger doesn’t have breakers).
Then turn on the dc breaker, followed by the ac breaker. If the
relay remains in alarm mode, check the Low Level Detect
indicator on main control board. See section 2.3.8. If no other
alarm is on, replace the control circuit board.
57
SERVICING THE AT10.1
3.5. REPLACING DEFECTIVE COMPONENTS
WARNING:
High voltages appear at several points inside the battery charger. Use
extreme caution when working inside the charger. Do not attempt to
work inside the charger unless you are a qualified technician or
electrician.
Disconnect and lock out all power from the battery charger before
starting to remove or replace any components. Turn the ac power off at
the distribution panel upstream from the battery charger. Disconnect the
battery from the charger output terminals.
NOTE: Refer to the drawings in Appendix C while performing the
following procedures.
Removing the safety shield
Some of the repair procedures described below require you to remove the
clear plastic safety shield over the I/O (input/output) panel inside the front
panel. You remove the shield by taking off the wing nuts on the front.
Don't lay the shield on the top of the charger; the top vents are needed for
cooling.
CAUTION: Hazardous ac and dc voltages are present on the I/O
panel terminals and several internal components.
Removing the enclosure shroud
You may need to remove the enclosure shroud in order to make some
internal measurements, and to replace or repair some components.
Remove all power from the charger. Remove the eleven screws that hold
the shroud on the rear and bottom of the enclosure, then the two screws on
the left side that hold the rectifier heat sink assembly. Support the front
panel and lift the shroud straight up to remove it. Be sure to save the
plastic washers from the door hinge.
The heat sink assembly is supported from the rear panel. Avoid putting
any mechanical stress on the heat sink.
Replacing the enclosure shroud
Lower the shroud onto the enclosure base. Install and tighten the eleven
screws that hold the shroud on the rear and bottom of the base before you
install the two screws that support the heat sink assembly on the left side
wall. Remember to reinstall the plastic washers on the door hinge.
58
SERVICING THE AT10.1
Replacing the control circuit board (A1)
CAUTION: A1 is sensitive to damage from static discharges. Leave
the circuit board in its anti-static bag until you are ready to install it.
Ground yourself before handling the board by touching the ground
stud on the back of the door. Handle the board only by the edges.
Turn off all power to the charger. Disconnect the battery from the output
terminals. If the optional temperature compensation probe is installed,
disconnect the leads from TB8. Remove the harness plug from the upper
left edge of the control circuit board, and unplug wire # 30 from the quickconnect terminal near the upper left corner of the board.
The board is mounted on six plastic standoffs. Compress the tab on each
standoff, and pull the board toward you until it clears all the standoffs. Put
the replacement board in place with the same orientation, and push it onto
the standoffs. Be sure that the board is fully seated on the standoffs.
Replace wire # 30 on the quick-connect terminal, and connect the harness
plug to the board at the top edge. Replace any optional wiring, such as the
temperature compensation probe. See section 2.1 for the steps to restart
the charger.
If your charger parameters (float voltage, etc.) are different from the
factory preset values, you should program in the new values now. See
section 2.3. You should also recalibrate the dc voltmeter according to
section 2.3.7.
Replacing the rectifier heat sink assembly (A6)
Refer to the customer instruction supplement JA0086-01 supplied with
your replacement rectifier heat sink assembly EJ1243-00.
Deenergize and lock out all ac and dc voltage sources to the AT10.1. This
includes remote sense wires if they were installed. Check with a voltmeter
before proceeding. Remove the enclosure shroud as described in the
previous section. Make sure the rectifier heat sink has cooled and remove
the entire assembly by the front edge. Remove all wires attached to the
rectifier control pc board as you pull the assembly out of the enclosure.
Hold the replacement rectifier assembly in front of the AT10.1 (in the
same orientation as the old), and reconnect all wires removed from the old
assembly as you insert it into the enclosure. To ensure correct
replacement, see the wiring diagrams in Appendix C of this manual or the
customer instruction supplement JA0086-01, supplied with the
replacement heat sink assembly. When you are done, check to ensure all
wires are connected to the proper terminals, and all lugs are fully seated. If
any lug does not fit snugly, disconnect it, carefully tighten the ears of the
lug using long-nosed pliers, and reconnect.
59
SERVICING THE AT10.1
Rotate the rectifier assembly into position in the enclosure. Line up the
metal tab with the mounting hole on the back wall of the charger and slide
the assembly into position. Replace the shroud as described in the
previous section. Tighten all screws and restart the AT10.1.
Replacing the optional dc filter assembly (A7)
The dc filter assembly consists of a diode heat sink, inductor L2, and one
or two capacitors installed on a single bracket.
Turn off all power to the charger. Disconnect the battery from the output
terminals. Remove the safety shield.
Find the flying lead from the inductor L2 (wire # 50) and disconnect the
other end from the center terminal of inductor L1 (at the upper right
corner of the rear panel). Disconnect wire # 15 from the quick-connect
terminal at the top center of the diode heat sink, and remove wire # 54
from terminal E7 on the front circuit board on the rectifier assembly.
Carefully note which terminal the wire is connected to. Remove the four
screws at the top of the dc filter bracket. The bracket and the inductor will
both fall forward, away from the rear panel.
Lift the filter bracket up about .25in / 6.4mm to release it from the clips at
the bottom of the bracket. Swing the filter assembly outward to the left,
rotating it so that the heat sink comes out first and the capacitor(s) last.
Install the replacement filter assembly by inserting the capacitor end first,
and rotating the assembly inward so that the heat sink is last to go in. Push
the bottom edge of the bracket into the clips in the rear panel, and install
the four screws at the top of the bracket.
Connect wire # 15 to the quick-connect terminal at the top center of the
diode heat sink. Route the flying lead from the inductor L2 (wire # 50)
and connect it to the center terminal ("2") of the inductor L1. Reconnect
wire # 54 to terminal E7 of the front circuit board on the rectifier
assembly. Replace the shroud and the safety shield.
Replacing the ac input or dc output circuit breaker (CB1, CB2)
Deenergize and lock out all ac and dc voltage sources to the AT10.1.
Check with a voltmeter before proceeding. This includes remote sense
wires if they were installed. Remove the two circuit breaker mounting
screws on the front panel, and carefully rotate the circuit breaker upward
and pull it out of the charger. Remove the wires from the terminals, one at
a time, and transfer the wires to the terminals of the replacement breaker.
Be sure the terminal screws are tight. Install the replacement breaker into
the front panel, rotating it downward into place. Install the two mounting
screws.
60
SERVICING THE AT10.1
Replacing the main transformer (T1)
Deenergize and lock out all ac and dc voltage sources to the AT10.1.
Check with a voltmeter before proceeding. This includes remote sense
wires if they were installed. Remove the enclosure shroud and the safety
shield. Disconnect the harness wires # 28 and # 29 from the upper row of
transformer terminals. Disconnect wires # 11 and # 12 from the top of the
rectifier heat sink. Disconnect harness wires # 3 and # 4 from the lower
row of terminals; leave both jumpers in place on the lower row.
Remove the four screws or nuts that secure the transformer to the rear
panel. Support the transformer by the top of the core and lift it up to get
the bottom bracket off the rear panel. Remove the transformer from the
charger.
Check the jumpers on the bottom row of terminals of the replacement
transformer. Make sure they are connected to the same terminals as the
jumpers on the transformer you just removed from the charger. For details
see section 1.6, Changing the Transformer Taps.
Hold the replacement transformer with the terminals labeled H1 through
H5 at the bottom, facing you. Place the transformer against the rear panel,
and slide the bottom of the transformer bracket into the slots on the rear
panel. Install the four screws or nuts onto the mounting bracket of the
transformer. Rewire the transformer, following the steps above in reverse.
Refer to section 1.6, and verify that the transformer is properly connected
for your input voltage.
Replacing the ac surge suppressors (VR2, VR4 or VR5)
Turn off all power to the charger. Disconnect the battery from the output
terminals. Remove the safety shield.
For VR2, remove the hardware from the input terminal L1, and remove
the lead of the ac surge suppressor. Install one lead of the replacement
surge suppressor onto the L1 terminal. Replace the other wires and the
hardware. Repeat procedure for the L2 terminal. Tighten all hardware.
For VR4, remove the hardware from the input terminal L1, and remove
the lead of the ac surge suppressor. Install one lead of the replacement
surge suppressor onto the L1 terminal. Replace the other wires and the
hardware. Repeat procedure for the left ground stud. Tighten all hardware.
For VR5, repeat procedure for the ac surge suppressor connected to the L2
terminal and the right ground terminal. Tighten all hardware.
NOTE: The surge suppressors are not polarized.
61
SERVICING THE AT10.1
Replacing the dc surge suppressor (VR1)
Turn off all power to the charger. Disconnect the battery from the output
terminals. Remove the safety shield.
Remove the hardware from the output terminal TB1(+), and remove the
lead of the dc surge suppressor. Install one lead of the replacement surge
suppressor. Replace the other wires and the hardware. Repeat for the
output terminal TB1(-). Tighten all hardware.
NOTE: The surge suppressor is not polarized.
Replacing the dc surge suppressor networks (VR6/C4, VR7/C5)
Replace these networks as assemblies; do not replace individual parts.
Turn off all power to the charger. Disconnect the battery from the output
terminals. Remove the safety shield.
To replace the network VR6/C4, remove the hardware from the output
terminal TB1(-), and remove the lead of the network. Cut the plastic wire
ties holding the assembly tight against the I/O panel. Install one lead of
the replacement network. Replace the other wires and the hardware.
Repeat for the other lead of the network on the ground terminal. For the
VR7/C5 network, use the above procedure, but start with the lead on
TB1(+). Tighten all hardware. Replace cut wire ties if possible.
NOTE: The surge suppressor networks are not polarized.
Replacing the power (ballast) resistor (R3)
Turn off all power to the charger. Disconnect the battery from the output
terminals. Remove the safety shield.
Locate the power resistor R3. On 130 Vdc chargers, it is mounted on the
bracket behind the I/O panel. On all other chargers, it is installed just to
the right of the I/O panel. Disconnect the lead of R3 wired to TB1(+), and
replace it with the corresponding lead of the replacement power resistor.
Remove the other lead of R3 from terminal E17 on the I/O panel and
replace it with the remaining lead of the replacement power resistor.
Tighten all hardware.
In 12 Vdc through 48 Vdc chargers, align the new R3 next to the I/O
panel so that the leads are properly spaced. In 130 Vdc chargers, remove
the two screws that mount the old resistor, and put the new resistor in its
place. Tighten all hardware.
62
SERVICING THE AT10.1
Replacing the scaling resistor (R4)
Locate the scaling resistor R4 on TB5 on the back of the front panel, just
above the control circuit board. The resistor (R4 is the one on the left) is
mounted on two quick-connect terminals. Remove the resistor by grasping
the terminals by the plastic insulation, and pulling out and downward.
Install the replacement resistor by pushing the terminals firmly onto the
quick-connect blades on the terminal block.
Replacing the voltage crowbar resistor (R6)
Locate the resistor R6 on TB5 on the back of the front panel, just above
the control circuit board. The resistor (R6 is the one on the right) is
mounted on two quick-connect terminals. Remove the resistor by grasping
the terminals by the plastic insulation, and pulling out and downward.
Install the replacement resistor by pushing the terminals firmly onto the
quick-connect blades on the terminal block.
Replacing the scaling resistor (R14)
Turn off all power to the charger. Disconnect the battery from the output
terminals. Remove the safety shield.
The scaling resistor R14 is connected to TB(-) with a ring lug. The other
lead of the resistor is soldered to wire # 20.
Remove the insulating sleeving from the soldered joint to wire # 20 (you
may have to remove a harness tie) and cut the resistor lead near the solder
joint. Disconnect the lugged-end of R14 from TB1(-) and discard the old
resistor.
Using a soldering iron no larger than 35 Watts, solder the bare lead of the
new R14 to wire # 20. Insulate the joint with plastic electrical tape. Crimp
a similar ring lug to the other lead of the new resistor. Connect the lugged
end of the new scaling resistor R14 to TB1(-).
63
SERVICING THE AT10.1
3.6. ORDERING REPLACEMENT PARTS
To order replacement parts, please provide the following information for
each component:
•
•
•
•
Circuit symbol from the schematic diagram (see Appendix)
Factory part number and description, from the table below
Model number and serial number of your battery charger
Quantity required
Call your sales representative to place an order for spare parts or
replacement parts.
Table 3-1: REPLACEMENT PARTS
Factory Part Number
Description
Symbol
12 Vdc
24 Vdc
48 Vdc
Rec.
130 Vdc
Spares
A1
Main Control circuit board assembly
EJ1243-10
Y
A5
Auxiliary Relay circuit board assembly
EJ1243-03
Y
A3
Rectifier control circuit board
EJ5093-00
A6
Rectifier (A3 + A16) / Heat Sink assembly
EJ1243-00
A7
DC Filter assembly
A8
Battery Eliminator Filter assembly
(requires filtered charger)
A10
Temperature Compensation Probe assembly
A16
Rectifier SCR module
C1
DC Output Filter capacitor
RP0019-09
RP0019-08
Y
C2
Battery Eliminator Filter capacitor
RP0019-09
RP0019-08
Y
C4
EMI filter capacitor
See VR6/C4
C5
EMI filter capacitor
See VR7/C5
See Table 3-2
EJ1155-00
EJ1155-01
See Appendix B, Table 2
EJ5094-00
CB1
AC breaker (standard) 120/208/240 Vac
See Table 3-3
CB1
AC breaker (med. AIC) 120/208/240 Vac
See Table 3-4
CB1
AC breaker (high AIC) 120/208/240 Vac
See Table 3-5
CB1
AC circuit breaker (med. AIC) 480 Vac
RE0171-00
CB1
AC circuit breaker (high AIC) 480 Vac
RE0043-00
CB2
DC circuit breaker (standard)
See Table 3-6
CB2
DC circuit breaker (medium AIC)
See Table 3-7
CB2
DC circuit breaker (high AIC)
See Table 3-8
CR1
Polarity diode
EJ1243-04
CR2
Blocking diode
EJ1243-05
64
Y
Y
SERVICING THE AT10.1
Factory Part Number
Symbol
Description
12 Vdc
24 Vdc
48 Vdc
Rec.
130 Vdc
F1
480 Vac AC Input Fuse
See Table 3-14
L1
Main Inductor
See Table 3-9
L2
DC Filter Inductor
See Table 3-13
P5
Jumper for disabling Ground Detection circuit
RC0100-00
P7
Jumper for voltage selection on
Auxiliary Relay circuit board
RC0100-00
P9
Jumper for front panel lockout feature on A1
RC0100-00
R2
Rating resistor
See Table 3-10
R3
Power resistor
EJ1127-00 EJ1127-01 EJ1127-02 EJ1127-03
18Ω
100Ω
250Ω
750Ω
R4
Scaling resistor (positive side)
R6
Crowbar resistor
EJ1135-00 EJ1135-01 EJ1135-02 EJ1135-03
R9
Bleed resistor
EJ1137-00 EJ1137-00 EJ1137-01 EJ1137-02
R14
Scaling resistor (negative side)
Spares
Y
Y
EJ1134-00 EJ1134-01 EJ1134-02 EJ1134-03
3160Ω
6980Ω
14.0KΩ
38.3KΩ
EJ1222-00 EJ1222-01 EJ1222-02 EJ1222-03
3160Ω
6980Ω
14.0KΩ
T1
Main transformer (120/208/240 Vac)
See Table 3-11
T1
Main transformer (480 Vac)
See Table 3-12
TB1-X I/O terminal box lug for #14-6 AWG.
RC0056-04
38.3KΩ
terminal section RC0014-00 (8 req'd)
TB6
Terminal block for Medium and
High AIC circuit breakers
VR1
Output Surge Suppressor
EJ1132-01
Y
VR2
Input Surge Suppressor (120/208/240 Vac)
EJ1132-01
Y
VR2
Input Surge Suppressor (480 Vac)
EJ1132-02
Y
end section RC0014-01 (1 req'd)
VR3
Input Lightning Arrestor
EJ1074-00
VR4,
VR5
Input Surge Suppressor (120/208/240 Vac)
EJ1132-01
Y
VR4,
VR5
Input Surge Suppressor (480 Vac)
EJ1132-02
Y
VR6/C4 EMI Filter Network
EJ5021-01
VR7/C5 EMI Filter Network
EJ5021-01
65
SERVICING THE AT10.1
Table 3-2: DC FILTER ASSEMBLIES (L2/C1/R9/CR1/CR2)
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
EJ1072-00
EJ1072-00
EJ1072-02
EJ1072-03
EJ1072-00
EJ1072-00
EJ1072-02
EJ1072-06
EJ1072-01
EJ1072-01
EJ1072-07
EJ1072-04
EJ1072-01
EJ1072-01
EJ1072-07
EJ1072-04
EJ1072-01
EJ1072-01
EJ1072-07
EJ1072-05
Table 3-3: STANDARD AC CIRCUIT BREAKERS (CB1) - 240 Vac
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
RE0159-11
RE0159-11
RE0159-11
RE0159-13
RE0159-11
RE0159-11
RE0159-13
RE0159-16
RE0159-11
RE0159-12
RE0159-13
RE0159-19
RE0159-11
RE0159-12
RE0159-14
RE0159-20
RE0159-11
RE0159-12
RE0159-15
RE0159-20
Table 3-4: MEDIUM AMPERE INTERRUPTING CAPACITY AC BREAKERS (CB1) - 240 Vac
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
RE0171-00
RE0171-00
RE0171-00
RE0171-01
RE0171-00
RE0171-00
RE0171-01
RE0171-04
RE0171-00
RE0171-00
RE0171-01
RE0171-07
RE0171-00
RE0171-00
RE0171-02
RE0171-08
RE0171-00
RE0171-00
RE0171-03
RE0171-08
Table 3-5: HIGH AMPERE INTERRUPTING CAPACITY AC BREAKERS (CB1) - 240 Vac
Current Rating
6A
12A
16A
20A
25A
66
12 Vdc
24 Vdc
48 Vdc
130 Vdc
RE0043-00
RE0043-00
RE0043-00
RE0043-01
RE0043-00
RE0043-00
RE0043-01
RE0043-04
RE0043-00
RE0043-00
RE0043-01
RE0043-07
RE0043-00
RE0043-00
RE0043-02
RE0043-08
RE0043-00
RE0043-00
RE0043-03
RE0043-08
SERVICING THE AT10.1
Table 3-6: STANDARD DC CIRCUIT BREAKERS (CB2)
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
RE0159-01
RE0159-01
RE0159-01
RE0159-12
RE0159-02
RE0159-02
RE0159-02
RE0159-13
RE0159-03
RE0159-03
RE0159-03
RE0159-14
RE0159-04
RE0159-04
RE0159-04
RE0159-15
RE0159-06
RE0159-06
RE0159-06
RE0159-17
Table 3-7: MEDIUM AMPERE INTERRUPTING CAPACITY DC CIRCUIT BREAKERS (CB2)
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
RE0171-00
RE0171-00
RE0171-00
RE0171-00
RE0171-01
RE0171-01
RE0171-01
RE0171-01
RE0171-02
RE0171-02
RE0171-02
RE0171-02
RE0171-03
RE0171-03
RE0171-03
RE0171-03
RE0171-04
RE0171-04
RE0171-04
RE0171-04
Table 3-8: HIGH AMPERE INTERRUPTING CAPACITY DC CIRCUIT BREAKERS (CB2)
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
RE0043-00
RE0043-00
RE0043-00
RE0043-00
RE0043-01
RE0043-01
RE0043-01
RE0043-01
RE0043-02
RE0043-02
RE0043-02
RE0043-02
RE0043-03
RE0043-03
RE0043-03
RE0043-03
RE0043-04
RE0043-04
RE0043-04
RE0043-04
12 Vdc
24 Vdc
48 Vdc
130 Vdc
AP0928-00
AP0928-00
AP0928-00
AP1122-00
AP0928-00
AP0928-00
AP0928-00
AP0930-00
AP0929-00
AP0929-00
AP0929-00
AP0931-00
AP0929-00
AP0929-00
AP0929-00
AP0931-00
AP0929-00
AP0929-00
AP0929-00
AP0931-00
Table 3-9: MAIN INDUCTOR (L1)
Current Rating
6A
12A
16A
20A
25A
67
SERVICING THE AT10.1
Table 3-10: RATING RESISTOR (R2)
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
EJ1133-00
34.8 KΩ
EJ1133-01
40.2 KΩ
EJ1133-02
53.6 KΩ
EJ1133-03
78.7 KΩ
EJ1133-04
118 KΩ
EJ1133-05
13.0 KΩ
EJ1133-06
15.4 KΩ
EJ1133-07
19.6 KΩ
EJ1133-08
23.7 KΩ
EJ1133-09
29.4 KΩ
EJ1133-10
5.11 KΩ
EJ1133-11
6.19 KΩ
EJ1133-12
7.50 KΩ
EJ1133-13
9.09 KΩ
EJ1133-14
11.0 KΩ
EJ1133-15
1.50 KΩ
EJ1133-16
2.21 KΩ
EJ1133-17
2.74 KΩ
EJ1133-18
3.57 KΩ
EJ1133-19
4.32 KΩ
Connector terminal
extraction tool
Molex Part No. 11-03-0044
Table 3-11: MAIN TRANSFORMER (T1) - 120/208/240 Vac
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
AA0718-00
AA0719-00
AB2023-00
AB1868-00
AA0718-00
AA0719-00
AB2023-00
AB1857-00
AA0720-00
AB1855-00
AB1856-00
AB1858-00
AA0720-00
AB1855-00
AB1856-00
AB1858-00
AA0720-00
AB1855-00
AB1856-00
AB1858-00
Table 3-12: MAIN TRANSFORMER (T1) - 480 Vac
Current Rating
6A
12A
16A
20A
25A
68
12 Vdc
24 Vdc
48 Vdc
130 Vdc
AA0733-00
AA0734-00
AB2038-00
AB2039-00
AA0733-00
AA0734-00
AB2038-00
AB2032-00
AA0735-00
AB2035-00
AB2036-00
AB2037-00
AA0735-00
AB2035-00
AB2036-00
AB2037-00
AA0735-00
AB2035-00
AB2036-00
AB2037-00
SERVICING THE AT10.1
Table 3-13: FILTER INDUCTOR (L2)
Current Rating
6A
12A
16A
20A
25A
12 Vdc
24 Vdc
48 Vdc
130 Vdc
AP0928-00
AP0928-00
AP0928-00
AP1081-00
AP0928-00
AP0928-00
AP0928-00
AP0928-00
AP0927-00
AP0927-00
AP0926-00
AP0926-00
AP0927-00
AP0927-00
AP0926-00
AP0926-00
AP0927-00
AP0927-00
AP0926-00
AP0926-00
12 Vdc
24 Vdc
48 Vdc
130 Vdc
RE0008-00
RE0008-00
RE0008-02
RE0008-06
RE0008-00
RE0008-02
RE0008-06
RE0008-08
RE0008-02
RE0008-06
RE0008-08
RE0008-09
RE0008-02
RE0008-06
RE0008-08
RE0008-11
RE0008-02
RE0008-06
RE0008-08
RE0008-11
Table 3-14: 480 Vac INPUT FUSE (F1)
Current Rating
6A
12A
16A
20A
25A
69
APPENDIX A
SPECIFICATIONS
All specifications apply at 77° F / 25 °C, 120 Vac, nominal Float voltage except as noted
Specification
Output voltage regulation
Conditions
12 Vdc
Vac +10%, -12%
0 to 100% load
24 Vdc
48 Vdc
130 Vdc
± 0.25%
Temp. 32-122° F / 0-50° C
Freq. 60 ± 3 Hz
Transient response
Efficiency
20-100% load change, with
battery connected
Output voltage change ± 4% maximum
Recovery to ± 2.0% in 200 ms
Recovery to ± 0.5% in 500 ms
12 Adc rating, full load, %
67.00
72.00
78.00
85.00
25 Adc rating, full load, %
73.00
77.00
85.00
91.00
Unfiltered, with battery
Filtered, with battery
Output ripple voltage
(per NEMA PE5-1996)
2% (typ) at battery terminals
30 mV rms (max) at battery terminals
Filtered, without battery
1% rms (typ)
With battery eliminator
option (without battery)
Current limit
Adjustable
Soft start
0 to 100% load
Float
Voltage adjustment ranges
Equalize
100 mV
50-110 % of rated output current
4 seconds
11.5-14.5 23.0-29.5
46-58
115-140
12-15.5
24-31
48-61
124-143
High DC Voltage alarm
12-19
24-38
48-76
120-175
Low DC Voltage alarm
7-12
15-24
30-48
80-120
0 - 21
0 - 42
0 - 75
0 - 195
Voltmeter range (Vdc)
Ammeter range (Adc)
30 mV
All ratings
0 - 30
Surge withstand capability
Test per
ANSI C37.90.1-1989
Reverse current from
battery
AC input power failure
90 mA maximum
Audible noise
Average for 4 sides,
5ft / 1.5m from charger
Less than 62 dB(A)
Cooling
Ambient temperature
Natural convection
Operating
Elevation
70
32-122° F / 0-50° C
3000ft / 1000m without derating
Relative humidity
Alarm relay contact rating
No erroneous outputs
0 to 95% non-condensing
120 Vac / 125 Vdc
0.5 A resistive
APPENDIX B
FIELD INSTALLABLE ACCESSORIES AND OPTIONS
All accessories/options listed below are available in kits for field installation.
Kits contain all parts and hardware with detailed installation instructions. To
order accessories/options, please provide the following information for each kit:
•
Factory part number and description, from the table below
•
Model number and serial number of your battery charger
•
Quantity required
Contact your sales representative to place an order for accessories/options.
Description
Auxiliary Relay PC Board (A5) for standard circuit breakers
Auxiliary Relay PC Board (A5) for med/high AIC circuit breakers
Standard DC Output Filtering (30 mV RMS with battery)
Battery Eliminator Filtering
Remote Temperature Compensation Probe Assembly (A10)
AC Input Lightning Arrestor (VR3)
Copper Ground Buss with one (1) box lug for #14-6 AWG.
Floor Mounting Kit for Style-586/594 Cabinet
Relay Rack Mounting Kit for Style-586/594 Cabinet
Drip Shield Assembly for Style-586/594 Cabinet
Cabinet Heater Strip Assembly for Style-586/594 Cabinet
NEMA-4/12/13 Type Enclosure for Style-586/594 Cabinet
Padlock for Front Door
DNP3 Level 2 / Modbus Communications Module
Kit Part Number
EI0213-00
EI0213-01
See table 3-2
See table 3-1
See below
EJ1074-00
EI0195-00
EI0192-00
EI0193-00
EI0191-00
EJ1223-00
EI0214-00
EI0215-00
See Appendix E
Temperature Compensation Assembly
The temperature compensation assembly consists of two (2) components:
1. To order a replacement probe (or puck), request part number EJ5032-00. This
probe is good for all charger output voltages and all battery types.
2. The standard temperature compensation assembly is supplied with a 25ft / 7.6m
interconnection cable. If you need a longer cable, order it from the table below,
which also shows the ordering part number for a complete probe kit.
Temperature Compensation Probe Kits
Cable Length
Kit Part Number
Replacement Cable
Part Number
(feet / m)
(includes probe)
25 / 7.6
EJ5033-00
EJ5011-00
50 / 15.2
EJ5033-01
EJ5011-01
100 / 30.5
EJ5033-02
EJ5011-02
200 / 61.0
EJ5033-03
EJ5011-03
Use a single cable assembly. Do not try to splice cables together to increase the length.
71
APPENDIX C (Standard Drawings)
Outline - AT10.1 Group I Battery Charger:
NEMA-1 Style-586 (JE5023-03)
Note: Online standard drawings, saved in Adobe Acrobat Portable Document Format (PDF), for the AT10.1
Series Battery Charger are available for downloading and printing. Please contact your sales representative for
document availability or see the manufacturer's web site listed on the back cover of this manual.
72
APPENDIX C (Standard Drawings)
Outline - AT10.1 Group I Battery Charger:
NEMA-1 Style-594 (JE5024-03)
Note: Online standard drawings, saved in Adobe Acrobat Portable Document Format (PDF), for the AT10.1
Series Battery Charger are available for downloading and printing. Please contact your sales representative for
document availability or see the manufacturer's web site listed on the back cover of this manual.
73
APPENDIX C (Standard Drawings)
AT10.1 Optional Enclosure Outline Drawings
Stlye-586 with Penthouse and Drip Shield
DIMENSION
in
mm
WW
DD
H
16.25
12.50
15.63
495
324
457
W
D
16.25
10.75
495
337
WW
DD
H
14.00
10.75
22.63
356
337
572
W
D
16.25
10.00
495
324
WW
DD
H
18.75
12.50
19.50
559
318
552
W
D
16.25
10.75
495
337
WW
DD
H
18.75
12.50
26.50
476
337
729
W
D
16.25
10.00
495
324
Standard
with
Penthouse
with
Drip Shield
with
Penthouse &
Drip Shield
74
APPENDIX C (Standard Drawings)
AT10.1 Optional Enclosure Outline Drawings
Stlye-594 with Penthouse and Drip Shield
DIMENSION
in
mm
WW
DD
H
19.50
12.75
18.00
495
324
457
W
D
19.50
13.25
495
337
WW
DD
H
14.00
13.25
25.00
356
337
635
W
D
19.50
12.75
495
324
WW
DD
H
22.00
12.50
21.75
559
318
552
W
D
19.50
13.25
495
337
WW
DD
H
18.75
13.25
28.75
476
337
729
W
D
19.50
12.75
495
324
Standard
with
Penthouse
with
Drip Shield
with
Penthouse &
Drip Shield
75
APPENDIX C (Standard Drawings)
Internal Component Layout Detail - AT10.1 Group I Battery Charger
w/Common Options (JE5027-99)
Note: Online standard drawings, saved in Adobe Acrobat Portable Document Format (PDF), for the AT10.1
Series Battery Charger are available for downloading and printing. Please contact your sales representative for
document availability or see the manufacturer's web site listed on the back cover of this manual.
76
APPENDIX C (Standard Drawings)
Internal Component Layout Detail - AT10.1 Group I Battery Charger
w/Common Options (JE5027-99)
Note: This particular internal component layout drawing (JE5027-99) depicts an AT10.1 Group I battery charger
with ALL available options. Standard components (A1 through VR7) are featured in all Group I units. Optional
components (A5 through VR3) are featured only on those AT10.1 battery chargers configured with such options.
77
APPENDIX C (Standard Drawings)
Instrument Panel Detail - AT10.1 Group I Battery Charger
w/Optional Auxiliary Relay PC Board (JE5030-19)
Note: Online standard drawings, saved in Adobe Acrobat Portable Document Format (PDF), for the AT10.1
Series Battery Charger are available for downloading and printing. Please contact your sales representative for
document availability or see the manufacturer's web site listed on the back cover of this manual.
78
APPENDIX C (Standard Drawings)
Instrument Panel Detail - AT10.1 Group I Battery Charger
w/Optional Auxiliary Relay PC Board (JE5030-19)
Note: This instrument panel drawing (JE5030-19) depicts the optional Auxiliary Alarm Relay PC Board (A5),
which provides two (2) sets of individual form-c contacts (TB4) for all alarm conditions. Standard AT10.1 battery
chargers feature one (1) set of form-c summary (common) alarm contacts (TB3).
79
APPENDIX C (Standard Drawings)
Schematic - AT10.1 Group I Battery Charger
Standard w/o Options (JE5031-00)
Note: Online standard drawings, saved in Adobe Acrobat Portable Document Format (PDF), for the AT10.1
Series Battery Charger are available for downloading and printing. Please contact your sales representative for
document availability or see the manufacturer's web site listed on the back cover of this manual.
80
APPENDIX C (Standard Drawings)
Schematic - AT10.1 Group I Battery Charger
Standard w/o Options (JE5031-00)
81
APPENDIX C (Standard Drawings)
Schematic - AT10.1 Group I Battery Charger
with Common Options (JE5031-99)
Note: Online standard drawings, saved in Adobe Acrobat Portable Document Format (PDF), for the AT10.1
Series Battery Charger are available for downloading and printing. Please contact your sales representative for
document availability or see the manufacturer's web site listed on the back cover of this manual.
82
APPENDIX C (Standard Drawings)
Schematic - AT10.1 Group I Battery Charger
with Common Options (JE5031-99)
83
APPENDIX C (Standard Drawings)
Connection Diagram - AT10.1 Group I Battery Charger
Standard w/o Options (JE5033-00)
Note: Online standard drawings, saved in Adobe Acrobat Portable Document Format (PDF), for the AT10.1
Series Battery Charger are available for downloading and printing. Please contact your sales representative for
document availability or see the manufacturer's web site listed on the back cover of this manual.
84
APPENDIX C (Standard Drawings)
Connection Diagram - AT10.1 Group I Battery Charger
Standard w/o Options (JE5033-00)
85
APPENDIX C (Standard Drawings)
Connection Diagram - AT10.1 Group I Battery Charger
with Common Options (JE5033-99)
Note: Online standard drawings, saved in Adobe Acrobat Portable Document Format (PDF), for the AT10.1
Series Battery Charger are available for downloading and printing. Please contact your sales representative for
document availability or see the manufacturer's web site listed on the back cover of this manual.
86
APPENDIX C (Standard Drawings)
Connection Diagram - AT10.1 Group I Battery Charger
with Common Options (JE5033-99)
87
APPENDIX D
RECOMMENDED FLOAT AND EQUALIZE VOLTAGES
This table contains suggested values for commonly used batteries. Consult your battery
manufacturer's documentation for specific values and settings for your battery type.
Lead-Acid Types
Battery Cell Type
Antimony 1.215 Sp. Gr.
Antimony 1.250 Sp. Gr.
Calcium 1.215 Sp. Gr.
Calcium 1.250 Sp. Gr.
Absorbed / Gelled Electrolyte *
(sealed Lead-Acid type)
Nickel Cadmium
Recommended
Float Voltage/cell
Recommended
Equalize Voltage/cell
2.17
2.20
2.25
2.29
2.33
2.33
2.33
2.33
2.25
*
1.42
1.47
* Sealed Lead-Acid battery types should not be used in ambient temperatures above
95° F / 35° C, and should not normally be equalized. Please consult your battery
manufacturer's documentation for specific equalizing recommendations.
TEMPERATURE COMPENSATION
If batteries are to see temperature variations during charging, a temperature
compensation option (A10) is recommended. If this option is not part of your charger,
manual adjustments should be made. Please refer to the equation and table below for
temperature-adjusted voltages.
temperature-adjusted voltage = charge voltage x K
88
Temperature
(°F)
Temperature
(°C)
K
(Lead Acid)
K
(Nickel Cadmium)
35
45
55
65
75
77
85
95
105
1.7
7.2
12.8
18.3
23.9
25.0
29.4
35.0
40.6
1.058
1.044
1.031
1.017
1.003
1.000
0.989
0.975
0.961
1.044
1.034
1.023
1.013
1.002
1.000
0.992
0.981
0.970
APPENDIX E / F
COMMUNICATIONS MODULE
Your AT10.1 Battery Charger has provisions for an optional Communications Module
that allows the user to remotely monitor and control the charger over a serial
connection. This PC Board Assembly (A12) supports DNP3 Level 2 and Modbus
protocols over RS-232 or RS-485 half-duplex. The system can be used with a modem
for telephone communications. All features of the AT10.1’s front instrument panel are
accessible remotely, using this option. SCADA (Supervisory Control And Data
Acquisition) systems will be able to control, monitor and log the events of the battery
charger.
The standard Communications Module kit (EJ5037-XX) includes the Communications
PC Board (A12), an external power supply assembly (A14), a separate AT Series
Communications Module Operations Manual (JA5026-00), and field-retrofit
instructions. The Communications Module Operations Manual, along with a sales
catalog cut sheet, is freely available for download from the web site featured on the
back cover of this manual. A compatible industry-standard modem and modem cable
are also available. Contact your sales representative to place an order for the AT Series
Battery Charger Communication Module. Refer to the table below for ordering
information.
Description
Communications Module for 12 Vdc AT10.1
Communications Module for 24 Vdc AT10.1
Communications Module for 48 Vdc AT10.1
Communications Module for 130 Vdc AT10.1
Compatible Modem Option
10ft / 3.05m Modem Cable
25ft / 7.62m Modem Cable
50ft / 15.24m Modem Cable
Part No.
EJ5037-01
EJ5037-02
EJ5037-03
EJ5037-04
PM5005-00
EH5026-00
EH5026-01
EH5026-02
UL DATA
CAUTION
To operate this charger from inputs other than 120 Vac, you must use branch circuit
protection. To reduce the risk of fire, use only on circuits provided with the following
branch circuit protection in accordance with the National Electrical Code, ANSI/NFPA 70.
Current
Rating
12 Adc
16 Adc
20 Adc
25 Adc
Charger Voltage Rating
48 Vdc
130 Vdc
48 Vdc
130 Vdc
--25A
--20A
15A
25A
12A
20A
20A
30A
15A
30A
25A
40A
20A
35A
208 Vac Branch Circuit
240 Vac Branch Circuit
Protection (Amperes)
Protection (Amperes)
NOTE: This table does not apply to AT10.1 chargers with 480 Vac input.
89
CUSTOMER NOTES
MANUAL REVISION:
The text and graphics contained within this manual are controlled by the battery charger
manufacturer's internal part number (JA5023-00). The revision level of this manual's text and
graphics are featured in the electronic filename listed below. The revision dates are also listed
below and supercede all other available dates. The first two and last two pages of this manual
are reserved for company-specific front and back cover artwork. Any revision levels, revision
dates or document numbers featured on the first two and last two pages of this manual refer to
the cover artwork only.
DOCUMENT INFORMATION:
Document Number:
Revision Level:
Document Change Number:
Filename
Last Date Saved
Last Date Printed
JA5023-00
2
E1741
[JA5023-00.Rev.2.AT10.1.Group-1.Manual.doc]
[9/16/2004 10:24 AM]
[9/16/2004 10:24 AM]
DRAWINGS:
Any job-specific custom drawings supplied with this battery charger and/or this manual,
supercede the standard drawings featured in Appendix C. The standard drawings and
corresponding page numbers featured in this section may not be included with custom printed
manuals, when job-specific custom drawings are supplied.
ON-LINE AVAILABILITY:
Electronic versions of this manual and/or any custom or standard drawings for the
AT10.1 Series Battery Charger are available online. Saved in Adobe Acrobat Portable
Document Format (PDF), they are readily available for downloading and printing. Please
contact your sales representative for document availability or see the manufacturer's web site
listed on the back cover of this manual.
90
QUICK OPERATION
For unpacking and
installation instructions,
see section 1 on page 2 in
this manual
To learn how to use the
equalize timers, see
sections 2.2.4 on page 27
and 2.3.3 on page 32
Startup
„ Turn on the dc breaker, labeled “DC OUTPUT”.
„ Turn on the ac breaker, labeled “AC INPUT”.
Changing between Float and Equalize Modes
„ Press the
key to toggle from Float mode to
Equalize mode. Press again to toggle back to
Float. The green or yellow indicator identifies
the current mode.
For details on setting
parameters, see section
2.3 starting on page 30
Setting
If you don’t press any key
for 25 seconds, the AT10.1
resumes normal operation
automatically
„ Press the
Float Voltage
Equalize Voltage
Equalize Timer
High DC Voltage
Low DC Voltage
key. The DC VOLTS and
FLOAT indicators light, and the digital display
flashes the present float voltage setting.
„ Press the
or
key until the digital
display indicates the desired float voltage.
„ Press the
key to save the new setting
internally.
„ The EDIT sequence advances to the equalize
voltage as shown by the front panel indicators.
Repeat the above steps until you have set all
parameters.
JA5011-01 -
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