Gamatronic Centric 3x480 Vac User manual

G
AMATRONIC
E
LECTRONIC
I
NDUSTRIES
L
TD
.
17 Hartom St., PO Box 45029, Jerusalem 9777517, Israel
Tel: [phone] Fax: [phone]
Email: [email protected] Website: www.gamatronic.com
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Release 1.7, November 2015
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* 240 kW model
to be launched.

ii CENTRIC 3x480, User Guide, rel. 1.7
GAMATRONIC ELECTRONIC INDUSTRIES LTD.
Har Hotzvim Industrial Park
17 Hartom St., PO Box 45029, Jerusalem 9777517 Israel
Tel: [phone] Fax: [phone]
Email: inf[email protected]o.il Website: www.gamatronic.com
The equipment described in this document is not intended to be used in connection with any
application requiring fail-safe performance, unless the application design includes appropriate
redundancy. This exclusion includes, but is not limited to, the direct operation of any life support
system or any other system whose failure could lead to serious injury, death, environmental
damage or mass destruction.
Copyright 2015 by Gamatronic Electronic Industries Ltd. All rights reserved worldwide.
Any representations in this document concerning the performance of Gamatronic's product(s) are for informational purposes only
and are not warranties of future performance, either express or implied. Gamatronic's standard limited Warranty, which
accompanies its sales contract or order confirmation form, is the only warranty offered by Gamatronic Electronic
Industries Ltd. in relation thereto.
Gamatronic Electronic Industries Ltd. ("Gamatronic") warrants the products it manufactures to be free from defect for a period of
one calendar year from the date of invoice, including the date of invoice. Gamatronic's liability is limited to repairing or replacing
any defective parts in the equipment under warranty. Gamatronic reserves the right to determine whether the repair work shall be
performed at Gamatronic's factory, at the customer's premises, or at an alternate site. The customer must obtain authorization from
Gamatronic before returning any parts or equipment to Gamatronic for repair or replacement. Any items returned to Gamatronic
must be sent freight prepaid.
Gamatronic’s liability and warranty to the product are according and subject to the fulfilment and implementation by the customer of
all the terms and instructions in connection with “preventive maintenance” and “service and repair” as further detailed in the user
guide which is attached to the product and forms an integral part of it.”
Gamatronic is not responsible for any damage to the product due to unauthorized repair work, misuse or abuse of the product, or
force majeure. If the product is delivered without batteries, Gamatronic is not responsible for any damage or malfunction due to
incorrect wiring of the batteries.
Gamatronic is not liable for and the Purchaser waives any right of action it has or may have against Gamatronic for any
consequential or special damages arising out of any breach of warranty, and for any damages that the Purchaser may claim for
damage to any property or injury or death to any person arising out of its purchase or the use, operation or maintenance of the
subject product.
This warranty includes parts and labor; however, Gamatronic shall not be responsible for any labor subcontracted or performed by
the Purchaser to prepare the warranted item for return to Gamatronic or Gamatronic's agent.
The information contained in this document is proprietary and is subject to all relevant copyright, patent and other laws protecting
intellectual property, as well as any specific agreement protecting Gamatronic's rights in the aforesaid information. Neither this
document nor the information contained herein may be published, reproduced or disclosed to third parties, in whole or in part,
without the express, prior, written permission of Gamatronic. In addition, any use of this document or the information contained
herein for any purposes other than those for which it was disclosed is strictly forbidden.
Gamatronic reserves the right, without prior notice or liability, to make changes in equipment design or specifications.
Information supplied by Gamatronic is believed to be accurate and reliable. However, no responsibility is assumed by Gamatronic
for the use thereof nor for the rights of third parties which may be affected in any way by the use thereof.
This document may contain flaws, omissions or typesetting errors; no warranty is granted nor liability assumed in relation thereto
unless specifically undertaken in Gamatronic Electronic Industries Ltd. standard limited Warranty. Information contained herein is
periodically updated and changes will be incorporated into subsequent editions. If you have encountered an error, please notify
Gamatronic Electronic Industries Ltd. All specifications are subject to change without prior notice.
The product described in this document may cause interference with radio communications if not installed
and used according to the user guide and/or installation guide. Be aware that the product is intended for
use in a commercial or industrial setting. Operation of the product in a residential area may cause harmful
interference, in which case the user will be required to correct the interference at his own expense.

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
CENTRIC 3x480, User Guide, rel. 1.7 iii
TABLE OF CONTENTS
1. SAFETY PRECAUTIONS....................................................................................................................1
1.1 Do’s......................................................................................................................................1
1.2 Don’ts...................................................................................................................................2
2. INTRODUCTION TO THE CENTRIC 480...............................................................................................3
2.1 System structure..................................................................................................................3
2.2 LCD Control Panel...............................................................................................................6
2.3 System controller .................................................................................................................7
2.4 UPS module (30 kVA / 30 kW).............................................................................................7
2.5 Static switch module ............................................................................................................7
2.6 Battery..................................................................................................................................7
2.7 Dc-to-dc voltage converter modules....................................................................................8
2.7.1 What the dc-dc converters do.................................................................................8
2.8 Emergency Power Off – EPO (manual)...............................................................................9
2.8.1 EPO indication ........................................................................................................9
2.8.2 Battery trip coil dry contact......................................................................................9
2.8.2.1 Restarting the UPS after EPO.................................................................................................9
3. OPERATING MODES.......................................................................................................................10
3.1 Normal mode......................................................................................................................10
3.2 Battery mode......................................................................................................................10
3.3 Bypass mode .....................................................................................................................10
4. USER INTERFACE ..........................................................................................................................11
4.1 Control panel......................................................................................................................11
4.1.1 Calibrating the touch screen.................................................................................11
4.2 Buttons and LEDs on the system controller.......................................................................12
4.2.1 “UPS off” button ....................................................................................................12
4.2.2 “Alarm” LED ..........................................................................................................12
4.2.3 “CPU active” LED..................................................................................................13
4.2.4 “CPU On/Off” button..............................................................................................13
5. CENTRIC CONTROL SYSTEM...........................................................................................................14
5.1 The main screen (main menu)...........................................................................................14
5.2 Main Menu highlights.........................................................................................................15
5.2.1 Setup.....................................................................................................................15
5.2.1.1 Time.......................................................................................................................................15
5.2.1.2 Dry contacts...........................................................................................................................15
5.2.2 Operation ..............................................................................................................16
5.2.2.1 Turning the UPS on (following normal shutdown) .................................................................16
5.2.2.2 Turning the UPS off...............................................................................................................17
5.2.3 Status....................................................................................................................18
5.2.4 Profile....................................................................................................................19
5.2.5 Log ........................................................................................................................19
5.2.6 Time ......................................................................................................................19
5.2.7 Help.......................................................................................................................19
5.3 Operating the system.........................................................................................................20
5.3.1 Turning the UPS ON.............................................................................................20
5.3.2 Turning the UPS OFF...........................................................................................20
5.3.3 Transferring the load to bypass ............................................................................20
5.3.4 Transferring the load to the inverter......................................................................20
6. CENTRIC START-UP.......................................................................................................................21
6.1 Normal (not first-time) start-up...........................................................................................21
6.2 Centric total shutdown (no ac output)................................................................................22

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
iv CENTRIC 3x480, User Guide, rel. 1.7
7. CENTRIC MENU FUNCTIONS IN DETAIL.............................................................................................23
7.1 Password requirements .....................................................................................................23
7.2 SETUP menu.....................................................................................................................24
7.2.1 Setup > SYSTEM..................................................................................................24
7.2.1.1 Setup > System > NOMINAL SETTINGS..............................................................................25
7.2.1.2 Setup > System > NUMBER OF MODULES.........................................................................25
7.2.1.3 Setup > System > NUMBER OF BATTERIES.......................................................................26
7.2.1.4 Setup > System > SYSTEM TYPE........................................................................................27
7.2.1.5 Setup > System > SHUTDOWN and AUTORESTART.........................................................27
7.2.1.6 Setup > System > CONTROLLER.........................................................................................27
7.2.1.7 Setup > System > MAINTENANCE.......................................................................................29
7.2.2 Setup > MODULES...............................................................................................30
7.2.2.1 AC INPUT VOLTAGE CALIBRATION...................................................................................30
7.2.2.2 AC OUTPUT VOLTAGE CALIBRATION...............................................................................30
7.2.2.3 MODULES INPUT CURRENT CALIBRATION......................................................................30
7.2.2.4 MODULES OUTPUT CURRENT CALIBRATION..................................................................31
7.2.2.5 DC VOLTAGE CALIBRATION...............................................................................................32
7.2.2.6 AC OUTPUT VOLTAGE ADJ................................................................................................33
7.2.2.7 DC BUS VOLTAGE CALIBRATION......................................................................................33
7.2.2.8 SERIAL NUMBER .................................................................................................................34
7.2.2.9 Auto-Correction......................................................................................................................34
7.2.3 Setup > DC-DC.....................................................................................................35
7.2.3.1 Battery voltage calibration .....................................................................................................35
7.2.3.2 Dc voltage calibration ............................................................................................................37
7.2.3.3 Charger current calibration....................................................................................................38
7.2.3.4 Dc-to-dc voltage adjustments................................................................................................39
7.2.3.5 Serial Numbers......................................................................................................................39
7.2.4 Setup > BATTERY................................................................................................40
7.2.4.1 Setup > Battery > BATTERY TEST PARAMETERS.............................................................40
7.2.4.2 Setup > Battery > BATTERY CURRENT...............................................................................41
7.2.4.3 End-of-Backup voltage limit...................................................................................................42
7.2.4.4 Battery floating voltage..........................................................................................................42
7.2.4.5 Batteries per cabinet..............................................................................................................42
7.2.4.6 Setup > Battery > BATTERY CAPACITY IN Ah....................................................................42
7.2.4.7 Setup > Battery > BATTERY TEMPERATURE CONTROL...................................................42
7.2.5 Setup > STATIC SWITCH.....................................................................................44
7.2.5.1 Setup > ST.SW. > CALIBRATE BYPASS VOLTAGE...........................................................44
7.2.5.2 Setup > ST.SW. > CALIBRATE INVERTER VOLTAGE........................................................44
7.2.5.3 Setup > ST.SW. > CALIBRATE OUTPUT VOLTAGE...........................................................44
7.2.5.4 Setup > ST.SW. > CALIBRATE OUTPUT CURRENT ..........................................................44
7.2.5.5 Setup > ST.SW. > HIGH-LEVEL SETUP ..............................................................................45
7.2.5.6 Setup > ST.SW. > OVERLOAD HYSTERISIS......................................................................45
7.2.6 Setup > ALARMS..................................................................................................46
7.2.6.1 Setup > Alarms > SET ALARM PRIORITIES........................................................................46
7.2.6.2 Setup > Alarms > ALARM LIMITS.........................................................................................46
7.2.7 Setup > CONNECTIVITY......................................................................................47
7.2.7.1 Network configuration options ...............................................................................................47
7.2.7.2 SNMP configuration options (optional feature)......................................................................47
7.2.7.3 Serial communication (optional feature)................................................................................49
7.2.7.4 Modbus (optional feature)......................................................................................................49
7.2.7.5 Remote shutdown (optional feature)......................................................................................63
7.2.7.6 Email configuration (optional feature)....................................................................................65
7.2.7.7 Controller host name .............................................................................................................68
7.2.8 Setup > TIME........................................................................................................69
7.2.8.1 Setup > Time > ADJUST DATE / TIME.................................................................................69
7.2.8.2 Setup > Time > CHANGE TIME ZONE.................................................................................69
7.2.8.3 Setup > Time > SET LAST MAINTENANCE DATE..............................................................69
7.2.9 Setup > ASSIGN SITE ID .....................................................................................69
7.2.10 Setup > DRY CONTACTS (optional feature)........................................................70
7.2.10.1 Setup > Dry contacts > INPUT DRY CONTACTS.................................................................70
7.2.10.2 Setup > Dry contacts > OUTPUT DRY CONTACTS.............................................................71

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
CENTRIC 3x480, User Guide, rel. 1.7 v
7.2.10.3 Generator Mode setup...........................................................................................................74
7.2.11 Setup > SAVE & RESTORE.................................................................................75
7.2.11.1 Setup > Save & restore > SAVE SETTINGS.........................................................................75
7.2.11.2 Setup > Save & restore > RESTORE SETTINGS.................................................................75
7.2.11.3 Setup > Save & restore >RESTORE FACTORY SETTINGS................................................75
7.2.12 Setup > CHANGE AUTHORIZATION LEVEL ......................................................76
7.2.12.1 Setup > Authorization > SET USER AUTHORIZATION LEVEL............................................76
7.2.12.2 Setup > Authorization > ENABLE / DISABLE REMOTE CONTROL.....................................76
7.3 OPERATION......................................................................................................................77
7.3.1 Operation > SWITCH ON/OFF .............................................................................77
7.3.1.1 Operation > Switch on/off > SYSTEM OFF...........................................................................77
7.3.1.2 Operation > Switch on/off > SYSTEM ON.............................................................................77
7.3.1.3 Operation > Switch on/off > MODULES OFF........................................................................77
7.3.1.4 Operation > Switch on/off > MODULES ON..........................................................................77
7.3.1.5 Operation > SWITCH ON/OFF > DC/DC OFF ......................................................................77
7.3.1.6 operation > SWITCH ON/OFF > DC/DC On..........................................................................78
7.3.1.7 Operation > Switch on/off > CONTROLLER RESTART........................................................78
7.3.1.8 Operation > Switch on/off > CONTROLLER shutdown.........................................................78
7.3.2 Operation > TRANSFER LOAD............................................................................78
7.3.2.1 Operation > Transfer load > TRANSFER LOAD TO INVERTER..........................................78
7.3.2.2 Operation > Transfer load > TRANSFER LOAD TO BYPASS..............................................78
7.3.3 Operation > BATTERY TEST ...............................................................................78
7.4 STATUS.............................................................................................................................79
7.5 PROFILE............................................................................................................................81
7.5.1 Profile > SYSTEM.................................................................................................81
7.5.2 Profile > BATTERY ...............................................................................................82
7.5.3 Profile > ST.SW. ...................................................................................................82
7.5.4 Profile > ALARMS.................................................................................................82
7.5.5 Profile > IDENTIFICATION...................................................................................83
7.6 LOG....................................................................................................................................84
7.6.1 The "Alarms" button on the log detail screen........................................................86
7.7 CONNECTIVITY ................................................................................................................88
7.8 TIME...................................................................................................................................89
7.9 LANGUAGE.......................................................................................................................90
7.10 HELP..................................................................................................................................90
8. MINOR REAR PANEL CONNECTORS.................................................................................................91
9. OPERATING THE MAINTENANCE BYPASS SWITCH.............................................................................93
9.1 Putting the UPS in maintenance bypass mode .................................................................93
9.2 Returning the UPS to normal operation.............................................................................94
10. TROUBLESHOOTING ......................................................................................................................95
10.1 Troubleshooting “Dc high”................................................................................................101
10.2 Troubleshooting “Dc low”.................................................................................................102
10.3 Troubleshooting “Bypass mode”......................................................................................103
10.4 Troubleshooting “UPS modules”......................................................................................104
10.5 Troubleshooting “No output”............................................................................................111
10.6 Troubleshooting “Static switch”........................................................................................112
11. PERIODIC PREVENTIVE MAINTENANCE ..........................................................................................115
12. THE BUILT-IN WEB INTERFACE (OPTION).......................................................................................115
12.1 Preliminaries to use of the Web interface........................................................................115
13. CENTRIC SPECIFICATIONS............................................................................................................116
LIST OF FIGURES
Figure 1: Major components of the Centric 3x480 Vac (240 kW model) .............................................4

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
vi CENTRIC 3x480, User Guide, rel. 1.7
Figure 2: Major components of the Centric 3x480 Vac (120 kW model) .............................................5
Figure 3: System control panel, displaying the main menu..................................................................6
Figure 4: System control panel, with current navigation path..............................................................6
Figure 5: The control panel ................................................................................................................11
Figure 6: The Centric’s top front panel...............................................................................................12
Figure 7: The main screen and its features........................................................................................14
Figure 8: The Operation submenu .....................................................................................................16
Figure 9: The "Turn off / on" submenu...............................................................................................16
Figure 10: The system requests confirmation....................................................................................17
Figure 11: The "Turn off / on" submenu.............................................................................................17
Figure 12: The system requests confirmation.....................................................................................17
Figure 13: The Status screen.............................................................................................................18
Figure 14: Main menu, UPS off, normal mode...................................................................................21
Figure 15: Centric main menu............................................................................................................23
Figure 16: “Key” icon on function button ............................................................................................23
Figure 17: "Setup" menu ....................................................................................................................24
Figure 18: "Setup > SYSTEM" options...............................................................................................25
Figure 19: "Setup > Modules" options................................................................................................30
Figure 20: Measurement point for calibration and adjustment of voltages and currents...................31
Figure 21: Dc voltage calibration........................................................................................................32
Figure 22: Measure the module’s dc voltage between the dc bus and midpoint...............................33
Figure 23: "Setup > DC-to-DC" options..............................................................................................35
Figure 24: Battery bus bars and midpoint bus bar in Centric’s underbelly.........................................36
Figure 25: The “Battery voltage calibration” screen...........................................................................36
Figure 26: Dc-dc blocks numbering sequence...................................................................................37
Figure 27: Dc voltage calibration screen............................................................................................37
Figure 28: Charger current calibration screen....................................................................................38
Figure 29: Dc/Dc voltages adjustment screen ...................................................................................39
Figure 30: "Setup > Battery" options..................................................................................................40
Figure 31: "Setup > Static Switch" options.........................................................................................44
Figure 32: "Setup > Alarms" options ..................................................................................................46
Figure 33: "Setup > Connectivity" options..........................................................................................47
Figure 34: Setup > Connectivity > SNMP configuration options........................................................48
Figure 35: Creating a new community................................................................................................48
Figure 36: Community name accepted ..............................................................................................48
Figure 37: Defining serial communication parameters.......................................................................49
Figure 38: Defining Modbus communication parameters...................................................................50
Figure 39: Remote shutdown submenu .............................................................................................63
Figure 40: New shutdown destination................................................................................................64
Figure 41: Select the shutdown target and press the arrow...............................................................64
Figure 42: Remote shutdown menu with target destination added....................................................64
Figure 43: Shutdown destination screen............................................................................................65
Figure 44: Example of email message body......................................................................................65
Figure 45: The email configuration menu...........................................................................................66
Figure 46: “Add new recipient” line.....................................................................................................67
Figure 47: New email recipient screen...............................................................................................67
Figure 48: Alarms button on email recipient screen...........................................................................67
Figure 49: Alarm selection screen for email recipient........................................................................68
Figure 50: "Setup > Time" options......................................................................................................69
Figure 51: Assigning a site ID ............................................................................................................69
Figure 52: "Setup > Dry Contacts" option ..........................................................................................70
Figure 53: Defining an input dry contact.............................................................................................71

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
CENTRIC 3x480, User Guide, rel. 1.7 vii
Figure 54: Example of an output dry contact linked to an alarm........................................................73
Figure 55: Generator mode setup screen..........................................................................................74
Figure 56: "Setup > Save & Restore" options....................................................................................75
Figure 57: "Setup > Authorization" option..........................................................................................76
Figure 58: The "Operation" option on the main menu........................................................................77
Figure 59: "Main Menu > Status" option.............................................................................................79
Figure 60: The Status Screen ............................................................................................................79
Figure 61: "Main Menu > Profile" options...........................................................................................81
Figure 62: "Main Menu > Log" options...............................................................................................84
Figure 63: Listing of the log file contents............................................................................................85
Figure 64: Log record - detailed display.............................................................................................86
Figure 65: "Alarms" display from the log detail screen.......................................................................87
Figure 66: "Main Menu > Connectivity" option...................................................................................88
Figure 67: "Connectivity" display from main menu.............................................................................88
Figure 68: "Main Menu > Time" option...............................................................................................89
Figure 69: The "Time" function on the main menu.............................................................................89
Figure 70: "Main Menu > Language" option.......................................................................................90
Figure 71: "Main Menu > Help" option................................................................................................90
Figure 72: Location of minor connectors on the controller’s rear panel.............................................91
Figure 73: Close-up of connector group 1..........................................................................................91
Figure 74: Close-up of connector group 2..........................................................................................92
Figure 75: Pin numbers in D9 connectors..........................................................................................92
Figure 76: Normal position of the maint. bypass switches.................................................................93
Figure 77: Inverter and bypass synchronized....................................................................................93
Figure 78: The system is in bypass mode..........................................................................................94
Figure 79: Switch positions in maint. bypass mode...........................................................................94
Figure 80: Last shutdown reason.....................................................................................................104
Figure 81: Shutdown reason in hex, and Fault_word.......................................................................105
Figure 82: Structure of Fault_word...................................................................................................106
Figure 83: Structure of Shutdown_reason........................................................................................107
Figure 84: The "Detail 2" or "Technician data 2" screen..................................................................108
Figure 85: Dc voltage screen ...........................................................................................................108
Figure 86: Calibration menu.............................................................................................................109
Figure 87: Status screen ..................................................................................................................112
Figure 88: Measurements on the STSW tab....................................................................................112
Figure 89: Voltage and current measmts. on the inverter output tab...............................................113
Figure 90: Bypass frequency measured at the static switch............................................................113
Figure 91: “Setup nominal values” screen .......................................................................................113
Figure 92: Setup > STSW > High-level setup..................................................................................114
LIST OF TABLES
Table 1: Key to Figure 1.......................................................................................................................4
Table 2: Key to Figure 2.......................................................................................................................5
Table 3: Battery lifetime vs. environmental temperature as per Eurobat.............................................7
Table 4: Features of the main screen.................................................................................................14
Table 5: Watchdog status and the state of the “CPU Active” LED.....................................................28
Table 6: Holding Registers for Modbus queries.................................................................................51
Table 7: Description of email parameters...........................................................................................66
Table 8: Alarms that can trigger output dry contacts..........................................................................72
Table 9: Key to Figure 60 (the Status screen) ...................................................................................80
Table 10: Log message types (alarm types)......................................................................................84

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
viii CENTRIC 3x480, User Guide, rel. 1.7
Table 11: Key to Figure 72.................................................................................................................91
Table 12: Assignments for D9 connectors on rear of controller.........................................................92
Table 13: Troubleshooting table.........................................................................................................96
Table 14: Interpreting Fault_word ....................................................................................................106
Table 15: Interpreting Shutdown_reason.........................................................................................107
Table 16: Technical specifications ...................................................................................................116
STANDARDS AND CONVENTIONS
•This user manual contains diagrams which include images of the display screen of the UPS. Unless
otherwise indicated, the readings shown in the screen images are only illustrative, and are not intended to
match the readings on a specific system in a particular environment.
•Operation and control of the Centric UPS is accomplished through a touch-sensitive LCD display screen. In
this manual, when explaining how to navigate the control software via the touch-sensitive screen, the terms
"tap", "press", "choose", and "select" may be used interchangeably to indicate selection of a screen option.

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
CENTRIC 3x480, User Guide, rel. 1.7 1
1. SAFETY PRECAUTIONS
The PowerPlus UPS system is designed for industrial applications and harsh environments.
Nevertheless the PowerPlus should be handled with care, according to the following guidelines.
WARNING! HIGH TOUCH CURRENT!
EARTH CONNECTION ESSENTIAL BEFORE CONNECTING SUPPLY.
1.1 Do’s
•Read this manual carefully before starting installation and operation of the UPS.
•Review the safety precautions described below to avoid injury to users and damage to the
equipment.
•This UPS is intended for installation in a temperature-controlled, indoor area that is free
from conductive contaminants.
•All power connections must be completed by a licensed electrician who is experienced in
wiring this type of equipment, and who is familiar with the local electrical codes and
regulations. Improper wiring may cause injury to personnel, or death, or damage to the
equipment.
•Ensure all power is disconnected before performing installation or maintenance.
•Leave at least 20 cm of clearance space between the ventilation openings of the UPS and other
objects or walls.
•The UPS must be well grounded to the building’s grounding system with a conductor that has a
current carrying capacity that matches the rating of the UPS.
•Battery installation, battery maintenance, and battery replacement shall be performed only by
authorized service personnel.
•Pay attention to all DANGER, CAUTION, and WARNING notices affixed to the inside and outside
of the UPS.
•Keep the surroundings clean, uncluttered and free from excess moisture.
•Keep the operating environment within the parameters stated in this document.
•Allow only qualified technicians to service the UPS. There are no user-serviceable components. Do
not try to repair it yourself!
•Use the UPS only for its intended purpose.
•The batteries should preferably be installed next to the UPS, or as close to it as is practically
possible.
•If you remove a UPS module from the Centric while the module is operating, wait five minutes
before reinserting the module. This allows the module’s capacitors time to discharge.
•FAST FUSES (SEMICONDUCTOR FUSES) must be used between the battery and the Centric,
and on the rectifier ac input line. For example, the Ferraz Shawmut A70QS fuse.

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
2 CENTRIC 3x480, User Guide, rel. 1.7
1.2 Don’ts
•Do not open the cover of the UPS or the battery cabinets under any circumstances. All UPS panels
and doors should be closed.
•Do not insert any objects through the ventilation holes.
•Do not put objects on the UPS.
•Do not move the UPS while it is operating.
•Do not use the UPS outdoors.
•Do not turn the UPS upside down during transportation.
•Do not connect or disconnect the cable to the battery cabinet before the battery circuit breaker is
turned OFF.
•Do not turn ON the battery circuit breaker when the battery cabinet is disconnected from the UPS.
•Do not install the UPS next to gas or electrical heaters. A restricted location is recommended in
order to prevent access by unauthorized personnel.
•If you remove a UPS module from the Centric while the module is operating, do not reinsert the
module immediately. Wait five minutes.
WARNING - RISK OF LETHAL ELECTRIC SHOCK:
This UPS receives power from more than one source! Disconnection of
all ac sources, and of the dc source, is required to de-energize this unit
before servicing.
WARNING - RISK OF LETHAL ELECTRIC SHOCK:
Do not touch uninsulated battery terminals.

GAMATRONIC ELECTRONIC INDUSTRIES LTD.
CENTRIC 3x480, User Guide, rel. 1.7 3
2. INTRODUCTION TO THE CENTRIC 480
In general, an Uninterruptible Power Supply (UPS) provides backup power for use when the utility ac
electric power mains fail or drop to an unacceptable voltage level. Centric does this and much more.
Centric
protects your data and equipment and minimize downtime and other adverse effects normally
incurred by power irregularities and failures.
Voltage surges, spikes and sags are inherent in commercial utility power. Over time, these irregularities
shorten the life of equipment and components. Centric continually eliminates power irregularities, thus
helping to extend the life of your equipment, even through normal use when the input power is constant
and continuous.
Centric
requires very little attention or intervention during normal operation; however, you should read and
understand the procedures described in this manual to ensure trouble-free operation.
Centric employs active current balancing between its power modules, and delivers overall electrical
efficiency of up to 96 %, up to 98 % in backup mode.
2.1 System structure
The Centric 3x480 Vac is available in two models:
•240 kVA/kW – holds up to eight UPS modules
•120 kVA/kW – holds up to four UPS modules
Each UPS module has an output capacity of 30 kVA / 30 kW.
In addition to the UPS modules, each Centric unit also includes:
•a system controller
•a static switch module
•an LCD control panel
•dc-to-dc voltage converter modules – one for every two UPS modules

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4 CENTRIC 3x480, User Guide, rel. 1.7
240 kW model, front view
240 kW model, rear view
Figure 1: Major components of the Centric 3x480 Vac (240 kW model)
Table 1: Key to Figure 1
ITEM
DESCRIPTION
A
The UPS cabinet’s front door
B
Back side of the LCD panel.
C
System controller
D Shelves for up to 8 UPS modules. Each UPS module supplies 30 kW.
The lowest UPS shelf is UPS shelf 1, the next shelf up is shelf 2, and so on.
E
Shelves for up to 4 dc-dc converter modules. The dc-dc modules convert the battery voltage of
270 V to 400 V for the UPS modules. Each dc-dc module contains 2 converter blocks.
The lowest dc-dc shelf is shelf 1; the next shelf up is dc-dc shelf 2, and so on.
Dc-dc shelf 1 supplies dc power to UPS shelves 1 and 2. Dc-dc shelf 2 supplies power to UPS
shelves 3 and 4, and so on up to dc-dc shelf 4.
F
The static switch is located at this level, inside the UPS. It is not visible from the outside.
G
Main ac terminals. See the Centric 3x480 Installation Guide for details.
H
Neutral bus bar.
I
Protective Earth Ground bus bar

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120 kW model, front view
120 kW model, rear view
Figure 2: Major components of the Centric 3x480 Vac (120 kW model)
Table 2: Key to Figure 2
ITEM
DESCRIPTION
A
The UPS cabinet’s front door
B
Back side of the LCD panel.
C
System controller
D
Shelves for up to 4 UPS modules. Each UPS module supplies 30 kW.
The lowest UPS shelf is UPS shelf 1, the next shelf up is shelf 2, and so on.
E
Shelves for up to 2 dc-dc converter modules. The dc-dc modules convert the battery voltage of
about 250 Vdc to 400 Vdc for the UPS modules. Each dc-dc module contains 2 dc-to-dc converter
blocks.
The lowest dc-dc shelf is shelf 1; the next shelf up is dc-dc shelf 2, and so on.
Dc-dc shelf 1 supplies dc power to UPS shelves 1 and 2. Dc-dc shelf 2 supplies power to UPS
shelves 3 and 4, and so on up to dc-dc shelf 4.
F
The static switch is located at this level, inside the UPS. It is not visible from the outside.
G
Main ac terminals.
H
Neutral bus bar.
I
Protective Earth Ground bus bar

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2.2 LCD Control Panel
The LCD control panel (Figure 3) is the user's main interface with the Centric. The LCD panel is touch-
sensitive –the user navigates through the system screens by pressing lightly on the various icons. On all
screens other than the main menu screen, the current navigation path is displayed in the upper-left corner
of the screen (Figure 4), enabling you to easily understand where you are within the control system menus.
The extensive capabilities of the user interface are described in detail in chapter 7 "Centric menu functions
in detail".
Figure 3: System control panel, displaying the main menu
Figure 4: System control panel, with current navigation path

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2.3 System controller
The Centric system controller has three purposes:
•Controls and monitors the operation of the Centric according to the user's commands.
•Collects and summarizes data from all sections of the UPS.
•Manages communication with external computers for data transfer and operation.
The Centric can operate without the system controller but with reduced functionality.
2.4 UPS module (30 kVA / 30 kW)
The UPS module is the core of the Centric, which consists of from one to eight identical internal modules
operating in parallel. The number of UPS modules installed in the cabinet is fixed at the time of
manufacture and depends on the user's capacity requirements.
Each UPS module includes a 3-phase charger with PFC (power factor correction) and a 3-phase PWM
(pulse-width modulation) inverter connected to batteries by a classic dc link.
2.5 Static switch module
The centralized, electronic static switch enables an automatic transfer of the load from the output of the
inverters to an alternate source – the ac mains, for example – when the inverter is unable to supply
sufficient power to the load (for example, in the event of an overload, or an inverter failure). The static
switch transfers high currents at very high speed; a typical transfer time is less than 3 ms.
2.6 Battery
The Centric battery bank provides backup power to the UPS and its load devices in the event that the
utility ac input fails. The batteries are housed in an external cabinet adjacent to the Centric. The batteries
are charged by the rectifier that supplies both the inverter and the battery charger.
The Centric supports the use of standard lead-acid batteries, and also lithium-ion batteries. If you plan to
use lithium-ion batteries, consult with your dealer to be sure that the battery setup parameter values
are appropriate for the batteries you will be using.
The battery cabinet should be installed as close to the UPS as is practically possible.
Fast-acting fuses (semiconductor fuses) must be used between the battery and the UPS.
Protect the batteries from moisture, dampness, and foreign substances.
The temperature of the battery's surroundings influences the batteries' useful lifetime.
Table 3: Battery lifetime vs. environmental temperature as per Eurobat
ENVIRONMENTAL
TEMPERATURE ACHIEVABLE PERCENTAGE OF BATTERY'S RATED LIFETIME
20 °C 100 %
30 °C 50 %
40 °C 20 %

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2.7 Dc-to-dc voltage converter modules
The dc-to-dc converter modules are located below the UPS modules (see Figure 1 or Figure 2). Each dc-dc
converter module contains two dc-to-dc converter blocks. Each converter block is dedicated to a single
UPS module. For every two UPS modules there is one dc-to-dc voltage converter module.
The dc-dc converter modules and the UPS modules, and the relation between them, can be seen in Figure
1 (240 kVA model) and Figure 2 (120 kW model).
The lowest dc-dc shelf is shelf 1; the next shelf up is dc-dc shelf 2, and so on. Dc-dc shelf 1 supplies dc
power to UPS shelves 1 and 2. Dc-dc shelf 2 supplies power to UPS shelves 3 and 4, and so on up to dc-
dc shelf 4. Therefore, if you are operating a Centric 3x480 Vac system with less than its full complement of
modules, it is recommended that the UPS modules and the dc-dc modules be installed beginning from the
lowest shelf and moving upwards.
No harm is done if there are more dc-to-dc converter blocks than modules. The extra dc-dc blocks (that is,
those without a corresponding UPS module in place) will simply enter “sleep” mode.
If a UPS module doesn’t have a corresponding dc-dc block the UPS modules will still function normally,
except that in battery mode there will not be any dc current supplied to that module. There is no common
dc bus between the UPS modules.
2.7.1 What the dc-dc converters do
The dc-dc modules convert the battery voltage of 540 Vdc to the 840 Vdc required by the UPS modules.
The dc-dc modules make it possible to supply the UPS modules with 840 Vdc using fewer batteries than
would otherwise be required. The Centric 3x480 Vac system requires a total of 40 12-volt batteries. Without
the dc-dc modules, at least 70 12-volt batteries would be required in order to supply 840 volts to the UPS
modules. So the use of dc-dc voltage conversion modules enable the user to save on battery costs.
The dc-dc modules also increase safety by reducing the total battery voltage to which the technician is
potentially exposed when replacing batteries.
The dc-to-dc modules extend battery life by charging the batteries with minimal ripple current, and by
reducing the effects of varying load types (active vs. reactive loads) on the charging process.

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2.8 Emergency Power Off – EPO (manual)
An external Emergency Power Off (EPO) switch may be installed on the Centric by the customer. The
EPO switch is used to cut power to the load in emergency situations. Refer to the section "Emergency
Power Off" in the Centric Installation Guide for further information.
2.8.1 EPO indication
Any of the output dry contacts can be assigned to indicate when the EPO switch has been activated. The
output dry contact can be used to trigger an external circuit if desired, such as a lamp or an audible alarm.
2.8.2 Battery trip coil dry contact
The Centric’s battery trip coil terminals are intended to be connected to the trip coil of the battery circuit
breaker. When this is done and the EPO switch is activated, the Centric sends a voltage pulse to the
battery circuit breaker trip coil, causing the battery circuit breaker to turn OFF. The battery circuit breaker
trip coil is rated for a maximum of 250 Vac, 12 A.
Use of the battery trip coil means that not only will use of the EPO switch cut all ac output from the UPS, it
will also turn off the battery circuit breaker. Refer to the section "Battery trip coil" in the Centric Installation
Guide for further information.
2.8.2.1 RESTARTING THE UPS AFTER EPO
After the emergency situation that prompted use of the EPO switch has been resolved, the UPS can be
restarted as follows:
1. Reset the EPO switch.
2. Switch off the following circuit breakers: ac input, bypass ac input, battery.
3. Switch on these circuit breakers: ac input, bypass ac input.
Do not switch on the battery circuit breaker at this time.
4. Switch on the UPS (“Operation > Turn on/off > System on > OK”).
5. Wait until the green LED on the left of the front panel of each UPS module is lit green.
Then switch on the battery circuit breaker.
(Note: the battery circuit breaker is not located on the UPS. It is either on the battery box or on the
cables connecting the battery box to the UPS.
6. The UPS is now ready for use.

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3. OPERATING MODES
The Centric UPS functions to supply ac electrical power to your load.
The Centric has three possible modes of operation:
•Normal mode.
•Battery mode.
•Bypass mode.
3.1 Normal mode
The UPS is almost always in normal operation mode. The load receives its power from the inverters that
supply stabilized voltage, protected from spikes and irregularities in the ac input. The rectifier feeds the
inverter, and also feeds the charger which supplies dc power to the battery charger.
3.2 Battery mode
During battery operation, the load continues to receive power from the inverters, but the dc input to the
inverter is taken from the batteries, instead of from the rectifier.
The duration of the battery operation is determined by the load demand and the battery capacity.
3.3 Bypass mode
During bypass operation, the load receives power directly from the bypass ac input via the static switch.
Whenever the inverters cannot provide power to the load, either due to an overload or a short-circuit in the
load, the load is automatically moved to the bypass ac input. The load is automatically returned to the
inverter when the problem has been corrected.

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4. USER INTERFACE
This section describes the buttons and indicators used to operate the Centric.
4.1 Control panel
The LCD control panel (Figure 3) is the user's main interface with the Centric. The LCD panel is touch-
sensitive – the user navigates through the system screens by pressing lightly on the various icons. On all
screens other than the main menu screen, the current navigation path is displayed in the upper-left corner
of the screen (Figure 4), enabling you to easily understand where you are within the control system menus.
The navigation path in the upper-left corner of the screen is also used to navigate backwards – to return to
a previous screen or to the main menu.
The extensive capabilities of the user interface are described in detail in chapter 7 "Centric menu functions
in detail".
Figure 5: The control panel
The LCD control panel is attached to the front of the UPS and is active when the UPS is connected to ac
power and also when the UPS is operating in battery mode.
There is a physical power on/off button on the control panel that controls the power supply to the screen. If
the UPS is connected to ac power or operating in battery mode and the display screen is blank, ensure that
the display unit itself has been powered on.
The display unit is mounted on a holder and can be removed from that holder if necessary. The angle of the
display screen can be adjusted.
4.1.1 Calibrating the touch screen
It may occasionally be necessary to calibrate the touch-screen, so that the pressure sensitive spots on the
screen accurately overlay the icons. It is recommended to calibrate the touch-screen the first time you use
it. The touch-screen can be recalibrated at any time, if needed.
To calibrate the touch screen, press and hold your finger on any location on the screen (preferably not on
an icon) for 10 seconds and then release your finger. The software then prompts you to press on four
specific locations on the screen, in series. Upon completing this process, the touch screen has been
calibrated.

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4.2 Buttons and LEDs on the system controller
On the system controller, to the left of the LCD touch screen are two buttons, and two LEDs. These are
described below.
Figure 6: The Centric’s top front panel
4.2.1 “UPS off” button
Pressing the ‘UPS off” button for ten seconds turns the Centric OFF.
This button is intended for use only when the LCD screen is not functional. Under normal circumstances
the on/off button icon in the upper right corner of the touch screen should be used to switch off the UPS.
Note: disabling the controller self-shutdown function (watchdog function) also disables the
“UPS OFF” button. See section 7.2.1.6.3 for more information.
4.2.2 “Alarm” LED
The “Alarm” LED lights when there is an alarm situation present. This LED is the physical counterpart of the
software generated triangular “alarm” indicator on the LCD panel’s main screen.
The Alarm LED has 3 possible states:
Off (unlit) There are no active system alarms.
Blinking red
There are one or more active alarms of status “Warning” or “Error”. To see a list of the
active alarms, press the alarm icon on the main screen. The icon will be either
•a red circle with an “x” in the middle (when the most serious active alarm is of
“error” status) or
•a yellow triangle with an exclamation point inside, when the most serious active
alarm is of “warning” status.
Solid red There are active alarms, but you have listed them already on the LCD screen. When a
fresh alarm occurs, the Alarm LED will start blinking again.
For more information on system alarms, see “Alarm indicator” in Table 6, and refer to
chapter 10 “Troubleshooting””.