Manual BATTERY DISCONNECT switch : C/B(Circuit Breker) type located at the
rear side of the front panel. When the C/B is in ON position, it connects the battery to
the rectifier and the system. (Rectifier is normal and output voltage is 46V or higher.)
Normal operation state.
When it is in OFF position, it separates the battery from the rectifier and the system.
(When battery is repaired or replaced.)
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Figure 7. Battery Disconnect(Front panel Open View)
7 Rectifier System Operation & Stop Operation
7.1 Rectifier System Operation
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① Turn on the AC power switches at the rectifier unit top.
② Yellow LED on each rectifier unit will be turned on.
③ Turn on the switch of each rectifier unit.
④ Turn on the power switch of the control unit.
⑤ Check if the rectifier system name displayed at the LCD of the control unit
matches the actual rectifier Shelf installed.
⑥ Check if the STATUS LED indicates normal.
7.2 Rectifier System Stopping (LOCAL)
① Turn off the switch of each rectifier unit.
② Yellow LED on each rectifier unit is turned on.
③ Turn off the main breaker at the distribution panel.
④ Turn off the power switch of the control unit.
7.3 Battery Temperature Compensation (BTC mode in TEMP ON)
As shown in the Rectifier Installation Manual, install the Battery Temperature
Compensating Probe near the battery Shelf.
Once the temperature probe is connected, and set to BTC mode, the system will
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operate in temperature compensation mode. If the Temp saner probe is taken out,
TEMP OUT is displayed and temperature compensation will not operate. Then, the
system will return to the operator defined mode (FL/EQ).
* FL Charge Mode
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Vout
56.4V
52.8V
-10℃
0℃ 5℃
* EQ Charge Mode
Vout
56.4V
Ac tual Tem perature Corrected Voltage
32℃(90F) or above
25℃(77F)
15℃(59F)
5℃(40F) or below
32℃
Figure 8. BTC-FL MODE
Ac tu al Tem perature C o rrec te d Vo ltag e
52℃(126F) or above
45℃(113F)
35℃(95F)
25℃(77F) or below
2.20V/Cell
2.24V/Cell
2.30V/Cell
2.35V/Cell
Tem p
2.20V/Cell
2.24V/Cell
2.30V/Cell
2.35V/Cell
52.8V
-10℃
0℃
7.4 Output Voltage FL Chage Mode Select (TEMP OFF)
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25℃52℃
Figure 9. BTC-EQ MODE
Tem p
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☞ Default is AUTO FLOAT MODE.
1) Manual – FL
Output voltage is maintained constantly at –54.5V.
2) Auto - FL
Auto-FL mode is maintained while the Auto-EQ Mode condition is not met.
7.5 Output Voltage EQ Charge Mode Select (TEMP OFF)
☞ Do not charge the battery too much in EQ mode. Due to high charge voltage,
battery cell may be over-charged shortening the life of the battery.
1) Manual - EQ
Output voltage is maintained at –56.0V.
2) Auto - EQ (Time, Cycle, etc)
• When the rectifier is initialized, it will operate up to 32 hours at AUTO-EQ
mode automatically. That is because the battery may have been discharged in
the storage process.
• If AUTO-EQ is selected, EQ charge is started, and auto-EQ mode is
maintained until 10 minutes pass after current falls below battery end current
limit.
• EQ state is maintained for up to 32 hours after EQ charge gets started.
• If EQ charge period exceeds 90 days, the mode will automatically be changed
to Auto-EQ mode.
* In TEMP ON mode, the system will operate at BTC-EQ and BTC-FL mode.
Output voltage will change depending on the temperature in the battery
Shelf. (For output voltage depending on temperature change, see 7.4 or
Control Panel Operation Manual.)
7.6 Rectifier Module Restart
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7.6.1 When Module is Shut Down by Over Voltage
If output voltage is suspended due to OV, and then fully shut down due to
regeneration in 5 minutes, manually set off the switch on the front panel to
standby location, and then set on the switch to ON location.
7.6.2 Rectifier Unit Thermal Shut Down
If internal temperature of the unit hikes, the unit will be shut down by its
protection circuit. To restore the module, push the switch at the rectifier unit front
to OFF and then push the switch again to ON manually.
7.7Battery Charge Current Limitation
This function enables user to set ON or OFF. Default is OFF. In that case, the
maximum value of charge current equals the output current limit of rectifier, which
means max current limit of the installed rectifier modules. (See Table 5.)
7.8 Control Panel Power Drop
If power of the rectifier system falls below 42.0V due to commercial power failure,
all of the control panel functions will be suspended. However, all of set values will
be maintained.
8 Control Panel Setup & Measurement
8.1 Control Panel Setup & Functions
User may edit the alarm and operating voltage of the control panel using the
FUNCTION keys. If any further information is provided, every value should be set
with default value.
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8.1.1 Float voltage setting
8.1.2 Equalize voltage setting
8.1.3 Output OV alarm setting
8.1.4 Output UV alarm setting
8.1.5 New password setting
8.1.6 Battery charge current limitation setting
8.1.7 Battery charge end current setting
8.1.8 Battery charge start current setting
8.1.9 Temp ON/OFF setting
8.1.10 Battery charge mode setting
8.1.11 Battery emergency voltage setting
8.1.12 Alarm History Clerar
8.1.13 Alarm Sound Setting
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⇒ See Control Panel Operation Manual.
8.2 Control Panel Measurement
Control panel displays various measurements related with the operation of the
rectifier system at the front LCD window and the meter window, and displays alarm
and operation status indications.
8.2.1 Input voltage measurement
8.2.2 Output voltage/current measurement
8.2.3 Battery charge/discharge current measurement
8.2.4 Current measurement per unit
8.2.5 Rectifier system alarm monitoring
⇒
See Control Panel Operation Manual.
9 Rectifier Test & Maintenance
9.1 Overview
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The purpose of this document is to provide guidelines to test the system, setup
measures to restore the system within a shortest possible time when any fault
occurs to the system. In addition, this manual enables to restore any problem in
the system in a short time to normal state. Enough amounts of spare parts must
be prepared to repair fault units. Even though the fault location and reason are
detected under the guidelines of this Manual, if field repair work is not possible, or
long period of time is needed for repair, the fault units should be replaced with
spare ones reserved. Then, the fault units can be repaired with enough amount of
time.
Note : As this rectifier uses AC voltage, it may cause electric shock. As battery
voltage is fed to the system, safety measures should be taken to repair and
maintain the system. As the battery generate a large amount of DC current,
worker should take off watch, ring or other metallic accessories.
9.2 Periodic Inspection
To guarantee effective operation of the system, periodic inspection is required.
Periodic inspection should be carried out one time per 6 months.
1) Take care not to block the air ventilation holes with dusts or other alien
materials.
2) Check the connection and tightening state of cables.
3) Check if internal temperature of the site is maintained in rated level.
4) Check rectifier operation state and alarm state with naked eye.
5) Check fixing on the floor and water leakage on the installation site for the
rectifier system.
9.3 Adding Rectifier Module
To expand the system capacity, rectifier modules may be inserted to vacant slots.
1) Check if the Standby/Operate switch of the module is set to ‘Standby’.
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2) Insert a rectifier module to a corresponding slot, and tighten the captive screw
on it.
3) Set Standby/Operate switch of the module to ‘Operate’.
4) Control panel will automatically set current limit of rectifier.
As current limit is set to 50% or 110%, current limitation is made considering
the number of rectifier modules within this range.
5) Verify the voltage and current set on the LCD screen.
* Check load share of each rectifier unit. For details, see Control Panel Operation
Manual.
6) If total current does not increase after a new module is inserted, check if the
module has any problem on it, and check the ID setting of the rectifier module.
7) Check if the rectififer generates any alarm or has any errors on it.
Figure 10. Rectifier Module Insert
10 Problem Solving & Fault Fixing
Repairing or problem fixing of the rectifier should be necessarily carried
out by experienced workers observing safety directions.
* Jobs should be carried out in due order.
* Workers should not wear rings, watches or metallic accessories.
* If non-insulated conductors are used, check using DVM if voltage is fed to
them.
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- Battery capacity may not be enough to complete the maintenance work of
the system.
- Circuits and boards should be protected from EMI.
10.1 Problem Solving
This rectifier has been designed for users to solve problems easily. The LCD
window of the control panel displays details of faults.
10.2 Replacing Parts
If a fault is suspected on a particular point, circuit board of that point should be
replaced. Replacing or replacement of individual circuits should not be made in
fields. Field replaceable units are limited to fan on a rectifier module, distribution
panel fuse and NFB.
10.3 Order of Replacement
10.3.1 Replacement of Rectifier Module (VPRM5415)
1) When a rectifier module is replaced, alarm will be driven. Turn off the rectifier
module from the control panel, or notify this fact to the person in charge.
2) Set the switch of the rectifier module to ‘STB’.
3) Turn the captive screw of the module counter clockwise. Then, take out the
module from the shelf seizing the handle on it.
4) Check if the switch of the new module is set to ‘STB’. Then, push it to the
end of the shelf along the slide.
5) Turn the captive screw of the module clockwise. Then, fix it to the shelf.
6) Set the switch of the rectifier to ON position.
7) Check if the module operates normally, and if any alarm is driven on it.
10.3.2 FAN Replacement of Rectifier Module
FAN should be replaced in the following order:
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1) When a rectifier module is replaced, alarm will be driven. Turn off the
rectifier module from the control panel, or notify this fact to the person
in charge.
2) Set the switch of the rectifier module to ‘STB’.
3) Turn the captive screw of the module counter clockwise. Then, take out
the module fromt the shelf seizing the handle on it.
4) Loosen the 4 screws at the both sides of the rectifier module, and
separate them from the module.
5) Take apart the FAN connector of the separated front panel and power
switch connector from the rectifier module.
6) Loosen the 4 nuts fixing the front panel to the fan.
7) Separate the fan, front panel and fan grill.
8) Replace the fan, and then take the opposite direction from 7) to 4). For
fan assembly, make the arrow mark on the fan facing inner side of the
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module. Fan connector cable should face downward, and then
assemble it.
9)Check if the switch of the module to be replace is set to “o” position
(STB state), and then push it to the shelf along the slide until it reaches
the end.
10) Turn the captive screw of the module clockwise to fix it.
11) Operate the module pushing down the switch.
12) Check if the module operates normally, and if there are any alarms on
it.
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Figure 11. Rectifier Module FAN Replacement
10.3.3 Replacement of Surge Protector
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① Get rid of the rear cover from the rectifier system rear.
② Pull out with a hand the part to be replaced from the SURGE PROTECTOR
at the rear.
③ Insert the new part in the opposite order.
Caution : As power is directly applied to the surge protector while input
power is fed, particular care must be paid.
11 Acronyms
GSM : Global Standard [System] for Mobile
NFB : No Fuse Breaker
C/B : Circuit Breaker
S/W : Switch
RMS : Root Mean Square
LVD : LOW VOLTAGE DISCONNECT