Mitsubishi Electric 9700 Series User manual

9700 100-225 Revision 3.3１: Feb. 4, 04
ALN-H0153
MITSUBISHI ELECTRIC AUTOMATION, INC.
UNINTERRUPTIBLE POWER SUPPLY SYSTEM
9700 SERIES
OWNERS / TECHNICAL MANUAL
( 100 - 225kVA )
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC
9700 SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
i
MITSUBISHI ELECTRIC 9700SERIES UPS
TABLE OF CONTENTS
LIST OF TABLES .............................................................................................. ii
LIST OF FIGURES ............................................................................................ iii
INTRODUCTION ............................................................................................... iv
1.0 GENERAL ................................................................................................ 1-1
1.1 DEFINITIONS ........................................................................................... 1-2
1.2 OVERVIEW .............................................................................................. 1-3
1.3 SPECIFICATIONS .................................................................................... 1-9
2.0 OPERATION CONTROLS AND INDICATORS ...................... 2-1
2.1 LED DISPLAY ........................................................................................... 2-2
2.2 KEYPAD ................................................................................................... 2-2
2.3 LIQUID CRYSTAL DISPLAY .................................................................... 2-3
2.4 EXTERNAL SIGNAL TERMINAL BLOCK ................................................. 2-9
3.0 INSTALLATION AND OPERATION ............................... 3-1
3.1 TRANSPORTATION AND INSTALLATION .............................................. 3-1
3.2 INSTALLATION PROCEDURE ................................................................ 3-1
3.3 PROCEDURE FOR CABLE CONNECTIONS .......................................... 3-2
3.4 OPERATING PROCEDURES .................................................................. 3-12
4.0 RESPONSE TO UPS FAILURE ................................... 4-1
5.0 PARTS REPLACEMENT ......................................... 5-1
6.0 FAULT CODES ................................................. 6-1
7.0 WARRANTY & OUT OF WARRANTY SERVICE .................... 7-1
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC
9700 SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
ii
MITSUBISHI ELECTRIC 9700SERIES UPS
List of Tables
Table 1.1 Power Specifications................................................................... 1-9
Table 1.2 UPS Module Information............................................................. 1-9
Table 1.3 Input Cabinet Information............................................................ 1-9
Table 1.4 Detail of Specifications................................................................ 1-10
Table 1.5 Rating of Circuit Breakers (MCCB) ............................................. 1-11
and Fuses
Table 3.1 How to Transport and Install the System .................................... 3-1
Table 3.2 List of Weights (lb.) ..................................................................... 3-1
Table 3.3 Maximum Permitted Fault Current .............................................. 3-2
Table 3.4 Recommended Cable Size and .................................................. 3-5
Torque Requirements
Table 3.5 Crimp Type Compression Lug .................................................... 3-6
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC
9700 SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
iii
MITSUBISHI ELECTRIC 9700SERIES UPS
List of Figures
Figure 1.1 Single Line Diagram-Normal Operation ...................................... 1-3
Figure 1.2 Single Line Diagram-Bypass Operation ...................................... 1-4
Figure 1.3 Single Line Diagram-Battery Operation....................................... 1-4
Figure 1.4 UPS Parts Location..................................................................... 1-6
Figure 2.1 Operation/Display Panel ............................................................. 2-1
Figure 2.2 Main Screen................................................................................ 2-3
Figure 2.3 Bypass Screen............................................................................ 2-3
Figure 2.4 Input Screen................................................................................ 2-4
Figure 2.5 Output Voltage Screen................................................................ 2-4
Figure 2.6 Output Current Screen................................................................ 2-4
Figure 2.7 Trend Graph Screen ................................................................... 2-5
Figure 2.8 Battery Screen ............................................................................ 2-5
Figure 2.9 Remote / Local Selection Screen................................................ 2-5
Figure 2.10 Operation Menu Screen .............................................................. 2-6
Figure 2.11 Battery Operation Screen............................................................ 2-7
Figure 2.12 Battery Low Voltage Screen........................................................ 2-7
Figure 2.13 Discharge Termination Screen.................................................... 2-7
Figure 2.14 Fault Indication Screen ............................................................... 2-8
Figure 2.15 External Signal Terminal Block ................................................... 2-9
Figure 2.16 Control Wiring for External Contacts........................................... 2-10
Figure 2.17 Remote "Start" Contact Connections .......................................... 2-11
Figure 2.18 External communication connector ............................................. 2-12
Figure 3.1 UPS Terminal Name ................................................................... 3-7
Figure 3.2 Diagram of input/output Terminals .............................................. 3-8
Figure 3.3 Start-up Menu ............................................................................. 3-24
Figure 3.4 Inverter Start / Stop..................................................................... 3-24
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC
9700 SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
iv
MITSUBISHI ELECTRIC 9700SERIES UPS
INTRODUCTION
Your Mitsubishi Uninterruptible Power System (UPS) is designed to provide many years of
reliable protection from power failure, brown-outs, line noise, and voltage transients. To
ensure optimum performance of the equipment, follow the manufacturer's instructions. This
manual contains descriptions required to operate the UPS. Please read this manual carefully
and retain it for future reference.
IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS
This manual contains important instructions for the 9700 Series Uninterruptible Power Supply
Systems that should be followed during installation and maintenance of the UPS and batteries.
WARNING 1
Lethal voltages exist within the equipment during operation. Observe
all warning and cautions in this manual. Failure to comply may result in
serious injury or death. Obtain qualified service for this equipment as
instructed.
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC
9700 SERIES UPS
OWNERS / TECHNICAL MANUAL
Page Number:
v
MITSUBISHI ELECTRIC 9700SERIES UPS
WARNING 2
This UPS does not include a Bypass Input circuit breaker (MCCB). The
Bypass Input contactor (CB3) does not protect against load induced
short circuits. The bypass input circuit breaker (MCCB) is field supplied
and installed. Breaker(MCCB)'s Specifications are as follows:
Capacity (kVA) Bypass Voltage (VAC) Maximum Bypass
Rating (AAC)
Recommended
Breaker (A)
100 208 278 350
100 480 120 150
100 600 96 100
150 208 416 500
150 480 180 225
150 600 144 150
225 208 625 700
225 480 271 300
225 600 217 225
300 480 361 400
300 600 289 300
375 480 451 500
375 600 361 400
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
v
MITSUBISHI ELECTRIC 9700SERIES UPS
WARNING 2
This UPS does not include a Bypass Input circuit breaker (MCCB). The
Bypass Input contactor (CB3) does not protect against load induced
short circuits. The bypass input circuit breaker (MCCB) is field supplied
and installed. Breaker(MCCB)'s Specifications are as follows:
Capacity (kVA) Bypass Voltage (VAC) Maximum Bypass
Rating (AAC) Recommended Breaker (A)
100 208 278 350
100 480 120 150
100 600 96 100
150 208 416 500
150 480 180 225
150 600 144 150
225 208 625 700
225 480 271 300
225 600 217 225
300 480 361 400
300 600 289 300
375 480 451 500
375 600 361 400
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-1
MITSUBISHI ELECTRIC 9700 SERIES UPS
1.0 GENERAL
The Mitsubishi 9700 Series UPS is designed to provide continuous, clean electrical power
to your critical load and to monitor power conditions affecting that load. In the event of an
input power failure, the UPS will supply power to the critical load for the specified battery
time.
If the input power is not restored promptly, back up power from the UPS battery permits
the orderly shutdown of equipment supported by the UPS. The UPS is simple to start-up,
operate and maintain.
The 9700 Series UPS is available in five kVA sizes-100, 150, 225, 300, 375kVA.
Specifications for each kVA model appear in Section 1.3. The principles of operation
described herein are applicable to all models.
This manual provides an overview of the 9700 Series components and their functions. It
describes the appearance and purpose of operator controls and indicators. It contains
procedures for operation, start-up, shutdown, and basic maintenance.
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-2
MITSUBISHI ELECTRIC 9700 SERIES UPS
1.1 Definitions
UNINTERRUPTIBLE POWER SUPPLY SYSTEM (UPS) - All components within the UPS
Module Cabinet includes the batteries which function as a system to provide continuous,
conditioned AC power to a load. This is sometimes referred to as the "System".
UPS MODULE CABINET - The metal enclosure which contains the Converter / Charger,
the Inverter, the Static Transfer Switch, the Internal Bypass line, the operator controls, and
the internal control system required to provide specified AC
power to a load.
UPS MODULE - The Converter / Charger and Inverter assemblies which, under the
direction of the internal control system and operator controls, provide specified AC power
to a load.
CONVERTER / CHARGER - The UPS components which contain the equipment and
controls necessary to convert input AC power to regulated DC power required for battery
charging and for supplying power to the Inverter.
INVERTER - The UPS components which contain the equipment and controls necessary
to convert DC power from the Converter / Charger, or the battery, to AC power required by
the critical load.
STATIC TRANSFER SWITCH - The device which connects the critical load to the bypass
line when the UPS module cannot supply continuous power.
BYPASS LINE - The line which conducts electricity directly from the input power source to the
critical load during Maintenance or whenever the UPS is not completely operational.
INPUT POWER - Power provided by the electrical utility company, or auxiliary generator,
which is connected to the UPS for supplying the critical load.
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-3
MITSUBISHI ELECTRIC 9700 SERIES UPS
1.2 Overview
The UPS provides two power paths between the utility source and the critical load as
shown in figures 1.1 and 1.2.
A) Through the UPS Module (FIGURE 1.1)
FIGURE 1.1 Single Line Diagram - Normal Operation
When the load is on the Inverter, the internal control system determines which of the two
paths supplies power to the load. During normal operation, the path through the UPS
module is used.
Input AC power flows through the UPS where it is converted to DC by the Converter /
Charger. This DC power is utilized to charge the UPS battery and to provide power to the
Inverter. The Inverter converts the DC power to clean AC power to supply the critical load.
The conversion - inversion process eliminates any voltage transients or fluctuations
existing in the input power before it reaches the critical load.
* The Bypass Input circuit breaker (MCCB) for protection of the UPS and cables is field
supplied and field installed. (See WARNING 2 on page iv)
Static Transfer
Switch
AC Bypass
In
p
ut
Output
AC input
CB
CB3
52S
52C
Use supplied
MCCB
UPS ModuleBattery cabinet
CB1
CB2 Power Flow
N
ot in Use
CONVERTER INVERTER
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-4
MITSUBISHI ELECTRIC 9700 SERIES UPS
B) Internal Static Bypass Line (FIGURE 1.2)
The Internal Static Bypass line is a Hard wired line through CB3, contactor 52S which
supplies the critical load with unconditioned input power. The purpose of this line is to
route power to the critical load while the UPS module is de-energized during Start-up
before the system is fully operational.
FIGURE 1.2 Single Line Diagram- Bypass Operation
C) Inverter supply at battery operation (FIGURE 1.3)
FIGURE 1.3 Single Line Diagram - Battery Operation
If the input power is interrupted, the battery will immediately supply the DC power required
by the Inverter to maintain continuous AC power to the load. A fully charged battery will
provide power for the specified time at the rated load, or longer, at a reduced load.
Static Transfe
r
Switch
AC Bypass
In
p
ut
Output
AC input
CB
CB3
52S
52C
Use supplied
MCCB
UPS ModuleBattery cabinet
CB1
CB2 Power Flow
N
ot in Use
CONVERTER INVERTER
Static Transfer
Switch
AC Bypass
In
p
ut
Output
AC input
CB
CB3
52S
52C
Use supplied
MCCB
UPS ModuleBattery cabinet
CB1
CB2 Power Flow
N
ot in Use
CONVERTER INVERTER
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-5
MITSUBISHI ELECTRIC 9700 SERIES UPS
When power is restored after a low battery shutdown, the Converter automatically restarts
operation, recharges the batteries, and the Inverter is automatically restarted without
operator intervention. The load is assumed by the inverter automatically without operator
intervention.
In the event of a power failure, the rectifier will de-energize and the batteries will discharge
into the inverter and maintain power to the critical until a) the battery capacity expires and
the inverter turns off, or b) input power is restored after which the converter will power the
critical load and simultaneously recharge the batteries. Figure 1.3 illustrates the flow
diagram during battery operation.
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-6
MITSUBISHI ELECTRIC 9700 SERIES UPS
FIGURE 1.4-a UPS Parts Location (100kVA)
52S
3. External
contact
signal
terminal
block
AC capacitor
UPS module
FRONT VIEW
1. CB1
CB3
52C
Converter &
Inverter Unit
Static
Transfer
Switch
4. Grounding Bar
DC capacitor
2. CB101
AC input capacitor
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-7
MITSUBISHI ELECTRIC 9700 SERIES UPS
FIGURE 1.4-b UPS Parts Location (Continued)
UPS module
BACKSIDE OF FRONT DOOR
10.SW7
Maintenance
9.SW4
Load on Bypass switch
7. Error RESET
Buzzer Stop
11.SW8
TEST switch
DPAU-55
8. CN45
RS232C
Connector
6. Switch PCB
DPAU-55
Main PCB
UPER
LCD panel
5. Emergency
bypass
switch
Relay PCB
RYDR
CNV SW BUZ ON
OF
MAINT TEST O
OF
INV
START
STOP
BYP INV
SYN
Inverter
Start/Stop switch
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-8
MITSUBISHI ELECTRIC 9700 SERIES UPS
Description of Figure 1.4:
1. AC Input circuit breaker (CB1) Circuit breaker for converter input power .
2. Control Power circuit breaker(CB101)
3. External contact signal terminal block Terminal block to connect contact signal input/output
lines to and from the external devices. Refer to FIGURE 2.4 for details.
4. Grounding bar (E)
5. Emergency bypass switch. This switch activates bypass power supply for emergency
reasons if the UPS is turned off. Normal position is “TRANSFER is PERFORMED”
6. Switches on the DPAU-54(PCB) (FOR SERVICE PERSONNEL ONLY)
Normally the customers do not have to operate those switches.
- SW4 (Load on Bypass switch) (9)
- SW3 (Maintenance Set button) (10)
- SW5 (TEST Switch): Normal = “Off”side. ()
- SW6 (Error RESET) (11)
7. "Error reset" switch This switch resets errors resulting from alarm conditions.
(Do not operate this switch while inverter and converter are in operation.)
8. RS232C connector (CN45)
9. Bypass manual change-over button (FOR SERVICE PERSONNEL ONLY)
This switch is used to transfer the UPS from inverter to static bypass for maintenance
purposes. Do not operate it under normal operation. Transfers will be lock-out if the bypass
voltage is more than +10%,-10% of nominal.
1) Uninterrupted switching is made at the time of synchronous operation. Switching is
impossible at the time of asynchronous operation.
2) Return to “Normal”after use.
10. Maintenance (Set) button This switch sets the UPS menu parameters.
11. "Test mode" switch This switch should be operated by Authorized Service Personnel only.
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-9
MITSUBISHI ELECTRIC 9700 SERIES UPS
1.3 Specifications
The UPS name plate displays the rated kVA as well as nominal voltages and
currents. The name plate is located on the interior side of the UPS front door.
TABLE 1.1 Power Specifications
Rated output
Power Input voltage
3 Φ/ 3 wire
Output voltage
3 Φ/3 or 4 wire
100kVA / 80kW
150kVA / 120kW
225kVA / 180kW
300kVA / 270kW
375kVA / 338kW
208V, 480V or 600V
208V, 480V or 600V
208V, 480V or 600V
208V, 480V or 600V
208V, 480V or 600V
208V, 480V or 600V
208V, 480V or 600V
208V, 480V or 600V
480V or 600V
480V or 600V
TABLE 1.2 UPS Module Information
UPS
[kVA] CABLE ENTRY WIDTH [in / mm] DEPTH [in / mm] HEIGHT [in / mm] WEIGHT [lb./ kg] HEATING [kBTU/h]
100 BOTTOM 35.4 / 900 29.9 / 759 79.7 / 2025 1900 / 860 31.0
150 BOTTOM 47.2 / 1200 29.9 / 759 79.7 / 2025 2350 / 1065 45.3
225 BOTTOM 55.1 / 1400 29.9 / 759 79.7 / 2025 3300 / 1495 63.0
300 TOP 94.5 / 2400 38.3 / 974 79.7 / 2025 4950 / 2240 113.8
375 TOP 94.5 / 2400 38.3 / 974 79.7 / 2025 5550 / 2515 149.4
TABLE 1.3 Input Cabinet Information
UPS
[kVA] INPUT VOLTAGE[V] CABLE ENTRY WIDTH [in / mm] DEPTH [in / mm] HEIGHT [in / mm] WEIGHT [lb./ kg]
100 480 TOP 36.0 / 910 29.9 / 759 79.7 / 2025 1275 / 580
150 480 TOP 44.0 / 1118 29.9 / 759 79.7 / 2025 1325 / 600
225 480 TOP 44.0 / 1118 29.9 / 759 79.7 / 2025 2000 / 910
300 480 TOP 44.0 / 1176 38.3 / 973 79.7 / 2025 2600 / 1180
375 480 TOP 54.0 / 1320 38.3 / 973 79.7 / 2025 3000 / 1360
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
1-10
MITSUBISHI ELECTRIC 9700 SERIES UPS
TABLE 1.4 Detail of Specifications
Rated Output kVA 100 150 225 300 375
Rated Output kW 80 120 180 270 338
AC INPUT CHARACTERISTICS
Configuration 3 phase, 3 wire
Voltage 208 V, 480 V, 600 V +10% ~ -15%
Input Power Factor 0.98 Typical
Frequency 60 Hz ±5%
Reflected Current THD 3% max. at 100% load; 5% max. at 50% load
STATIC BYPASS INPUT
Configuration 3 phase, 3 or 4 wire
Voltage 120/208 V, 277/480 V, 346/ 600 V ±10%
Frequency 60 Hz (±3% Tracking window)
BATTERY
Type VRLA, Flooded Lead Acid, Nickel Cadmium
Ride Through Application Specific
Nominal Voltage 360 VDC
Minimum Voltage 290 VDC
Number of Cells 176 ~ 185
AC OUTPUT
Configuration 3 phase, 3 or 4 wire
Voltage 120/208 V, 277/480 V, 346/ 600 V
Voltage Stability ±1%
Frequency 60 Hz
Frequency Stability ±0.01% in free running mode
Power Factor 0.8 nominal 0.9 nominal
Power Factor range 0.8 ~ 1.0 lagging (within output kW rating)
Voltage THD 2% maximum THD at 100% Linear Load
5% maximum THD at 100% non-linear load
Transient Response ±2% maximum at 100% load step
±1% maximum at loss or return of AC power
±5% maximum at load transfer to/from static bypass
Transient Recovery Less than 1 line cycle
Voltage Unbalance 1% maximum at 100% unbalanced load
Phase Displacement 1% maximum at 100% unbalanced load
Inverter Overload 125% for 10 minutes; 150% for 1 sec
System Overload 500% for 2 cycle (with bypass available)
Bypass Overload 125% for 10 minutes
Withstand Rating 65kA* *:with optional fuses
ENVIRONMENTAL
Cooling Forced Air
Operating Temperature 2°F ~ 104°F (0°C ~ 40°C). Recommended 68°F ~ 86°F
(20°C ~ 30°C)
Relative Humidity 5% ~ 95% Non Condensing
Altitude 3300 Feet (1000 meters); 5000 feet @ 0.99 derating
Location Indoor (free from corrosive gases and dust)
Paint Color Munsell 5Y7/1 (Beige)
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS OWNERS / TECHNICAL MANUAL Page Number:
1-11
MITSUBISHI ELECTRIC 9700 SERIES UPS
TABLE 1.5 Rating of Circuit Breakers (MCCB) and Fuses
NUMBER APPLICATION OUTPUT CAPACITY OF EQUIPMENT
100kVA 150kVA 225kVA 300kVA 375kVA
208V 480V 600V 208V 480V 600V 208V 480V 600V 480V 600V 480V 600V
M CB1 AC input circuit breaker - --------600A400A800A600A
C52RC AC input contactor 350A 420A 660A - -
CCB2
Battery disconnect circuit
breaker 400A 600A 800A 1200A 1600A
BCB101 Control circuit breaker 15A 30A
F
FCU, FCV, FCW,
FCX, FCY, FCZ Converter main circuit fuse 450A 630A 900A 900A 800A
UFIU, FIV, FIW,
FIX, FIY, FIZ Inverter main circuit fuse 450A 630A 900A 900A 800A
(OPTION)
FSU, FSV, FSW Bypass main circuit fuse 450A - 630A - 900A - - -
SFUD1, 2 Control power fuse DC500V 3A DC500V 3A DC500V 3A DC500V 3A DC500V 3A
EFUS1, 2, 3 Bypass input ZNR fuse AC600V 10A AC600V 10A AC600V 10A AC600V 10A AC600V 10A
SFZS1, 2, 3 Bypass input ZNR fuse AC600V 30A AC600V 30A AC600V 30A AC600V 30A AC600V 30A
FBS1, 2 CB3 control circuit fuse AC600V 5A AC600V 5A AC600V 5A AC600V 5A AC600V 5A
FZC1, 2, 3 AC input ZNR fuse AC600V 30A AC600V 30A AC600V 30A AC600V 30A AC600V 30A
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
2-1
MITSUBISHI ELECTRIC 9700 SERIES UPS
2.0 OPERATOR CONTROLS AND INDICATORS
The 9700 Series operator controls and indicators are located as follows:
Circuit breakers and contactors : Inside the module
UPS status indicators : Outside of door
FIGURE 2.1 Operation/Display Panel (Front panel)
EMRG.STOP
LOAD ON
INVERTER BATTERY OP. LOAD ON BYPASS LCD FAILURE UPS
FAILURE
7
3
4
5
6
2
1
LOAD ON
BYPASS
Get user manuals: See SafeManuals.com

MITSUBISHI
ELECTRIC 9700 SERIES UPS
OWNERS / TECHNICAL MANUAL Page Number:
2-2
MITSUBISHI ELECTRIC 9700 SERIES UPS
2.1 LED Display
1) Load on inverter (green)
Turned on when power is supplied from inverter to the critical load.
(Indicates the state of transfer switch "52C" of inverter.)
2)Battery operation (yellow)
Turned on when the battery is operating following an AC power failure..
3)Load on bypass (yellow)
Turned on when power is supplied through bypass to load devices.
(Indicates the state of transfer switch "52S" of bypass.)
4)Overload(yellow)
Turned on when an overload has occurred to the system.
5)LCD failure [ LCD FAIL ](red)
Turned on when an error occurs on the LCD.
6)UPS failure [ UPS FAIL ](red) [Annunciator: intermittent or constant tones]
Turned on when an error occurs on the system. In this case, the details of error are
indicated on the display panel.
Get user manuals: See SafeManuals.com