Ladis G31 Series User manual

UNINTERRUPTIBLE POWER SYSTEM
SERVICE MANUAL
G31 10K~30KVA Tower Model
REVISION DESCRIPTION Date
Rev. 1.0 Formal Release 2010/4/28
Rev. 2.0 2012/8/9
Rev. 3.0 Add 30KVA unit content 2013/9/4
Rev. 4.0 Add 30KVA safe start section 2013/12/27
Shenzhen LADS Technology Co.,Ltd.

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CONTENT
1. GENERAL INFORMATION ...............................................................................................................................................4
1.1 GETTING START................................................................................................................................................................4
1.2 IMPORTANT SAFETY INSTRUCTIONS ................................................................................................................................4
2. ELECTRIC SPECIFICATIONS..........................................................................................................................................5
3. FUNCTIONAL BLOCK.......................................................................................................................................................7
4. WORKING PRINCIPLE OF THE MAJOR FUNCTIONAL BLOCK.............................................................................9
4.1 SWITCH POWER SUPPLY .................................................................................................................................................9
4.2 PFC/BOOSTER ................................................................................................................................................................9
4.3 INVERTER.........................................................................................................................................................................9
4.4 CHARGER.......................................................................................................................................................................10
4.5 EMI BOARD....................................................................................................................................................................10
5. FUNCTION EXPLANATIONS FOR EACH PCB..........................................................................................................12
5.1 PFC BOARD (POWER FACTOR CORRECT BOARD).......................................................................................................13
5.2 INV BOARD (INVERTER BOARD)....................................................................................................................................13
5.3 CNTLBOARD (CONTROL BOARD).................................................................................................................................13
5.4 COMM BOARD (COMMUNICATION BOARD)...................................................................................................................13
5.5 CHARGER BOARD...........................................................................................................................................................13
5.6 O/PRELAY BOARD.........................................................................................................................................................13
5.7 POWER RELAY BOARD...................................................................................................................................................13
5.8 COMMUNICATION BOARD ...............................................................................................................................................13
5.9 PARALLEL BOARD...........................................................................................................................................................13
5.10 PANEL BOARD...............................................................................................................................................................13
5.11 EMI BOARD ..................................................................................................................................................................13
5.12 MOV BOARD................................................................................................................................................................14
6. INTERFACE.......................................................................................................................................................................15
6.1 LED DISPLAY.................................................................................................................................................................15
6.2 LCD DISPLAY.................................................................................................................................................................15
6.3 LCD DISPLAY ICON........................................................................................................................................................15
7. TROUBLE SHOOTING....................................................................................................................................................17
7.1 LCD PANEL DISPLAY PATTERN DEFINITION ..................................................................................................................17
7.1.1 Trouble shooting for warning icon in LCD display.................................................................................................17
7.1.2 Trouble shooting for fault codes in LCD display.....................................................................................................19
7.1.3 Trouble shooting......................................................................................................................................................23
7.2 REPAIR ...........................................................................................................................................................................23
7.2.1 Basic Instruments and tools.....................................................................................................................................25
7.2.2 Configuration of the Model pin and Battery number on the Control Board............................................................25
7.2.3 Configuration of the charger current on the charger Board ...................................................................................25
7.2.4 Regulation of the system..........................................................................................................................................26
7.2.5 Quick Start...............................................................................................................................................................27

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8.HOW TO START UPS SAFELY AFTER REPAIRING OR REPLACING PSDR BOARD.......................................36
8.1 START 10K(L)AND 20K(L) UNIT SAFELY.......................................................................................................................36
8.2 START 30K(L) UNIT SAFELY...........................................................................................................................................50
8.2.1 T est Charger s to make sure they could work fine. .................................................................................................50
8.2.2 Turn on the UPS with DC source ( the charger work as a current limitation DC source) .......54
8.2.3 Turn on the UPS with utility power ..........................................................................................................55
9. APPENDIX .........................................................................................................................................................................56
9.1 REFERENCE WAVEFORM ...............................................................................................................................................56
9.2 BASIC COMMUNICATION COMMAND................................................................................................................................58
9.2.1 QGS.........................................................................................................................................................................58
9.2.2 V<n>.......................................................................................................................................................................59
9.2.3 V±<n>.....................................................................................................................................................................59
9.2.4 BUSP±<n>..............................................................................................................................................................59
9. 2.5 BUSN±<n> ............................................................................................................................................................60
9. 2.6 VB±<n> .................................................................................................................................................................60
9.2.7 QVFW......................................................................................................................................................................60
9.2.8 QWS.........................................................................................................................................................................60
9.2.9 QFS..........................................................................................................................................................................61

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1. General Information
1.1 Getting start
This manual is for Galleon 10K(L)~30K(L) tower UPS. It can help service person perform the basic
maintenance and repair service.
This manual only focuses on the service section, so you should get the basic operation of the UPS from the
user manual, and make sure you had read and understood the user manual before reading the manual.
The manual includes 9 sections:
●General Information, this section shows you the general information of the service manual.
●Electric Specifications, this section shows you the basic electric specification of the UPS.
●Functional block, this section shows you the major functional block of the UPS.
●Working Principle of the Major Functional Block, this section shows you the working principle of the
major functional block.
● Function explanations for each PCB, this section explains you all the PCBs of the UPS system.
●Interface, this section shows you the LCD interface, including display and setting.
● Trouble Shooting, this section gives you the way to find the problems.
● Test Step, this section tells you how to test the UPS after you repair the unit.
● Appendix, this section shows you the basic waveforms for reference and the basic communication
commands.
1.2 Important Safety Instructions
For qualified service person only.
DO NOT perform any internal service or adjustment of this product unless the technical person is well
trained and experienced. .
Dangerous voltage exists at several points in this product. To avoid personal injury, don't touch any
exposed connections or components while UPS is on.
Turn off the UPS and switch off the input breaker before removing protective case.
AC voltage is always present if the input AC power is still available.
High voltage may exist at DC capacitors. Before removing the protective case, wait for at least five
minutes after turning off the UPS.
Verify input source (voltage and frequency) is within the maximum range before service.

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2. Electric Specifications
CAPACITY*
10000VA / 8000W
15000VA / 12000W
20000VA / 16000W
30000VA / 24000W
INPUT
Voltage
Range
Low Line Loss
110 VAC(L-N) ± 3 % at 50% Load
176 VAC(L-N) ± 3 % at 100% Load
Low Line Comeback
Low Line Loss Voltage + 10V
High Line Loss
300 VAC(L-N) ± 3 %t 50% Load
276 VAC(L-N) ± 3 % at 100% Load
High Line Comeback
High Line Loss Voltage - 10V
Frequency Range
46Hz ~ 54 Hz @ 50Hz system
56Hz ~ 64 Hz @ 60Hz system
Phase
Three phase with ground
Power Factor
≧0.99 at 100% Load
OUTPUT
Output voltage
208/220/230/240VAC
AC Voltage Regulation
± 1%
Frequency Range
(Synchronized Range)
46Hz ~ 54 Hz @ 50Hz system
56Hz ~ 64 Hz @ 60Hz system
Frequency Range (Batt. Mode)
50 Hz ± 0.1 Hz or 60Hz ± 0.1 Hz
Overload
AC mode
100%~110%: 10min
110%~130%: 1min
>130% : 1sec
Battery mode
100%~110%: 30sec
110%~130%: 10sec
>130% : 1sec
Current Crest Ratio
3:1 max
Harmonic Distortion
≦2 % @ 100% Linear Load; ≦5 % @ 100% Non-linear Load
Transfer
Time
Line Battery
0 ms
Inverter Bypass
0 ms
Inverter ECO
<10 ms
EFFICIENCY
AC mode
> 89%
>89%
>89%
>90%
Battery Mode
> 86%
>88%
>87%
>88%
BATTERY
Standard
Model
Type & Numbers
12 V /9 Ah x 20
12 V / 9 Ah x 40
12 V / 9 Ah x 40
12 V / 9 Ah x 60
Recharge Time
9 hours recover to 90% capacity
Charging Current
1.0 A ± 10% (max.)
2.0 A ± 10% (max.)
2.0 A ± 10% (max.)
4.0 A ± 10% (max.)
Charging Voltage
13.65V ± 1%
Long-run
Model
Type
Depending on applications
Numbers
18 - 20
Charging Current
4.0 A ± 10% (max.)
8.0 A ± 10% (max.)
8.0 A ± 10% (max.)
12.0 A ± 10% (max.)
Charging Voltage
13.65± 1%
PHYSICAL
Model
10K
10KL
15K
15KL
20K
20KL
30K
30 L
Outline
Dimension, D X W X H
592X250X576
815X250X
826
592X250X
576
815X250X
826
592X250X
576
815 X300 X
1000
815X250X
826
Net Weight (kgs)
83
28
164
37
164
37
233.5
64
Packaging
Dimension, D X W X H
700X385X
815
690X370X
670
920X380X
1025
700X385X
815
920X380X
1025
700X385X
815
920 X430 X
1205
920X380X
1025
Net Weight (kgs)
90
31
182
44
182
44
250.5
90
ENVIRONMENT
Operation Temperature
0 ~ 40°C (the battery life will down when > 25°C)
Operation Humidity
<95 % and non-condensing
Operation Altitude**
<1000m
Acoustic Noise Level
Less than 58dB @ 1 Meter
Less than 60dB @ 1
Meter
Less than 65dB @ 1
Meter
MANAGEMENT
Smart RS-232 or USB
Supports Windows® 2000/2003/XP/Vista/2008, Windows® 7, Linux, Unix, and MAC
Optional SNMP
Power management from SNMP manager and web browser
* Derate capacity to to 90% when the output voltage is adjusted to 208VAC.

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**If the UPS is installed or used in a place where the altitude is above than 1000m, the output power must be derated one percent per 100m.
***Product specifications are subject to change without further notice.

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3. Functional Block
As a true online UPS, the product applies a double conversion topology, comprising functional blocks as
shown in Figure 3.1
I/P EMI Rectifier PFC Inverter OP EMI
Charger
BPS STS
SPSBattery CNTL
INV STS
Bypass
Maintain Bypass
IP Breaker
Battery SCR and Relay
INV Relay
Maintain Switch
P1 Relay
Output Terminal
P1 Output Terminal
Input
Output Receptacle
COMM
a. Function block Diagram for 10K~20K
I/P EMI Rectifier PFC Inverter OP EMI
Charger
BPS STS
SPSBattery CNTL
INV STS
Bypass
Maintain Bypass
IP Breaker
Battery SCR and Relay
INV Relay
Maintain Switch Output Terminal
Input
COMM
b. Function block Diagram for 30K
Figure 3.1 Function block Diagram
The CNTL block controls the action of the UPS system. It detects the voltage and current to control PFC
and inverter, also it supplies the protection for the UPS, When the UPS becomes abnormal, in most case,
the CNTL can provide basic information indicating the status of the UPS.
The COMM block provides the communication interface for receiving and executing command from users
via the panel or other communication protocol, also provides the LCD display task.
The Rectifier and PFC blocks are the input stage of the UPS. The blocks convert AC input power into
two stable DC power stored in the BUS capacitor. In the meantime, PFC (Power Factor Correction) will
be executed and allows input current tracking the input voltage waveform. Therefore, the input power
factor will be corrected to 1 to achieve maximum efficiency and produce lowest power pollution to the
utility.
The PFC block in battery mode, also called Booster, is used to convert the low voltage DC power to
higher voltage with stable DC power, stored in the BUS capacitor.
The Inverter block is the output stage of the UPS and used to convert DC power from the BUS capacitor
to sine waveform output power.
When the utility is within the acceptable range, the UPS will provide power directly from the utility input
and the Rectifier and PFC will be executed at the same time. When the utility is outside of the acceptable
range, no matter it’s because of input voltage or input frequency, the UPS will shut down the Rectifier
and PFC functions and turn on the Battery Booster. In case of sudden interruption from input utility, the
controller can detect the interruption in very short time. During the short interval of detecting the
interruption, the output power will be provided by the power stored in the BUS capacitor. In this way,
there is no any interruption on output power.
The charger charges the battery when the utility is normal. The charger converts AC input power to DC

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power for recharging the battery. Two types of chargers will be available, one is for the standard model,
and the other is for long-run model that connects to external batteries.
The Input and Output EMI section provides EMI filter function. The input and output EMI filters can
prevent the UPS from being interference by external electronic/magnetic noise which is generated by
other electronic system and prevent other systems from the noise generated inside the UPS system.
The SPS generates DC power supply needed by operation of the circuit of the UPS itself. The Bypass
provides a path that utility can power the output directly when the Inverter is not executed. The
Maintenance Bypass provides another path that utility can power the output directly when UPS is in
maintenance status. The BYP.STS and ECO.STS blocks are two static transfer switches to make sure the
UPS has less or no transfer time.

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4. Working Principle of the Major Functional Block
4.1 Switch Power Supply
The Switch Power Supply (SPS) supplies DC power for UPS operation. The input source of the SPS is
the battery, or the output of the charger.
Battery
7812
7815
…………
Cp
C1
C2
C3
RS
D1
D2
D3
Q1
+12V Output
+15V Output
+12V(FAN) Output
TX
Figure 4.1 Basic circuit of power supply
Figure 4.1 is a flyback converter. When Q1 is on, all rectifier diodes (D1/D2/D3) are on open status and
all output capacitors (C1/C2/C3) supply currents to the load. The primary coil of the transformer will
become a pure inductor and the primary current will linearly increase to store energy in the coil. When
Q1 is off, primary current will stop and all rectifier diodes (D1/D2/D3) will turn to “close”status. It will
release the stored energy from the primary coil of the transformer to the secondary coil to supply loads.
At the same time, it will charge output capacitors including 15V, +12V, +5V, +12V(Fan), and HFPW.
The power of 15V, +12V, +5V supplies stable voltage to all kinds of ICs and other devices such as HCT.
The +12V (Fan) is supplied to fans and relays. The HFPWsupplies a high frequency power for the
switch (SCR/IGBT) driver and some other drive boards.
4.2 PFC/Booster
N
Q1
Q2
UBUS+
UBUS-
R/S/T Battery
L1
D2
D1
C1
C2
N
L2
Q3
Q4
Q5
Q6
Figure 4.2 PFC/Booster
As shown in the Figure 4.2, when Q1/Q2 is on and D1/D2 is off, the current will increase to store energy
in choke(L1/L2). When the Q1/Q2 is off and D1/D2 is on, the choke will release energy. Therefore, we
can control the current in chokes (input current) by regulating the time of Q1/Q2 on and off. There are three
independent PFC/Booster for each phase.
4.3 Inverter
The input of the half-bridge inverter topology is two DC voltages, and the output is an AC voltage, as
shown in the Figure 4.3. When Q1 is on and Q2 is off, the voltage of the bridge midpoint is +BUS. When
Q1 is off and Q2 is on, the voltage of the midpoint bridge is –BUS. We can get any voltage waveform
between ±BUS voltage from LC filter output by regulating the duty cycle of Q1/Q2, including sine wave
form.
The half-bridge inverter requires one snubber circuit to absorb the spike for security of the switches.

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The Bypass output power is supplied by R phase, and there is BYP.STS and INV.STS for the transfer
time requires.
CZ
D2
UI
UO
L
D1
N
C1
C2
Q1
Q2
UBUS+
UBUS-
N
R Phase
BYP.STS
INV.STS
INV.RLY
Figure 4.3 Half-bridge inverter
4.4 Charger
The function of charger is to charge and maintain the batteries at fully charged condition. The charger
charges the batteries with a constant current at initial stage. At the same time, the battery voltage keeps
increasing until reaching the constant charge voltage point. Then, the charge current will decrease
accordingly, now it’s in second stage. After one hour of constant voltage charging, the charge voltage will
change to floating charge voltage, in general, the charger will control the output voltage at a constant
level (13.65V±1% per battery) to optimize battery recharge time and prolong the lifetime of batteries
without overcharging.
As shown in the Figure 4.4, the battery charger applies same flyback topology as the SPS.
…………
Cp
C1
RS
D1
Q1
DC Output
TX
R
Phase
REC
+
-
Figure 4.4 Topology of the charger
Note: There are two kinds of chargers for standard model UPS and long-run model UPS. They both
apply the same principle, but there is one difference in charger output capacity. For standard model UPS,
it’s capable of generating 1A current. For long-run model UPS, it has maximum 4A charge current
capacity.
4.5 EMI Board
Input EMI board is connected between utility and the input of rectifier. Output EMI board is connected
between the output of inverter and output terminal block.
CX
CY
CY
CY
CY
CX
Input Output
Common
Choke
Figure 4.5 Topology of the output EMI