ULB TLB-R1000-480-OS User manual

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INSTRUCTION MANUAL
1000 KW RESISTIVE LOAD BANK
MODEL NO. TLB-R1000-480-OS
Published by:
Universal Load Banks, LLC.
28200 Lakeview Drive
Wixom, MI 48393
Customer Service:
E-mail: [email protected]
Website: www.universalloadbanks.com
Phone: [phone]
Date of Original: 2016 October

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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LIST OF EFFECTIVE PAGES
Insert latest changed pages and dispose of superseded pages in accordance with applicable
regulations. The total number of pages in this manual is approximately 35 consisting of the following:
Page No. Change Date
1 - 31 Original October 2016
32-46 Rev.01 June 2017
1 - 29 Rev.02 November 2017
1 - 35 Rev.03 JULY 2021

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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ABBREVIATIONS AND ACRONYMS
The following is a list of abbreviations and acronyms used throughout this manual.
A Amperes (Amps)
AC Alternating current
AI Analog Input
AO Analog Output
CMM Component Maintenance Manual
DC Direct Current
Deg Degree
DI Digital Input
DMM Digital Multimeter
DO Digital Output
F Fahrenheit
F.S. Full scale
Ft-lbs Foot pounds
GND Ground
HMI Human Machine Interface
Hz Hertz
In-lbs Inch pounds
KVA Kilovolt amps
KW Kilowatt
LCD Liquid Crystal Display
LED Light Emitting Diode
L-L Line to Line
L-N Line to Neutral
mA Milli ampere
MSDS Material Safety Data Sheet
mV Millivolt
NEC National Electric Code
NFPA National Fire Protection Association
OSHA Occupational Safety and Health Administration
UL Underwriters Laboratory
VAC Volts AC

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
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Table of Contents
LIST OF EFFECTIVE PAGES 2
ABBREVIATIONS AND ACRONYMS 3
SAFETY POINTS 5
SAFETY PRECAUTIONS 5
KEEP AWAY FROM LIVE CIRCUITS 5
SHOCK HAZARD 5
DO NOT SERVICE OR ADJUST ALONE 5
SAFETY EARTH GROUND 5
CHEMICAL HAZARD 5
EMERGENCY AID 5
POTENTIALLY HAZARDOUS OPERATOR CONDITIONS 5
EMERGENCY SHUT-DOWN 6
SAFETY SYMBOLS 7
INSPECTION AND UNPACKING 8
PRODUCT OVERVIEW 8
OPERATING INSTRUCTIONS 9
GENERAL 9
OPERATION 10
LOAD POWER CONNECTION 10
SAFETIES 12
POWER DATA 14
LOAD PROFILE 16
OPERATING MULTIPLE LOAD BANKS 19
Software set up 20
Physical connection 21
Powering up Master – Slave Load banks 22
DATA LOGGING 25
SHUT-DOWN 27
SAFETY AND SHUT-DOWN INDICATORS 27
MAINTENANCE 28
DAILY MAINTENANCE PRIOR TO OPERATION 30
QUARTERLY MAINTENANCE (EVERY THREE MONTHS) 30
ADDITIONAL PREVENTATIVE MAINTENANCE MEASURES (AS REQUIRED) 31
TROUBLESHOOTING 32
STORAGE 34
SHIPPING 34
CUSTOMER SERVICE 35
CONTACT INFORMATION 35
APPENDIX A: ELECTRICAL SCHEMATICS 35
APPENDIX B: BILL OF MATERIAL 35
APPENDIX C: DIMENSIONAL DRAWINGS 35

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Safety Points
Safety Precautions
The following instructions are general safety precautions that are not necessarily related to any
specific part or procedure, and do not necessarily appear elsewhere in this publication. These
precautions must be thoroughly understood and applied to all phases of operation and maintenance.
This manual contains various Warning and Caution statements. Personal injury or death may occur
to an operator and/or technician if a warning statement is ignored. Equipment damage or hazardous
conditions for personnel could result if caution or warning statements are ignored. Carefully read and
review this instruction manual, supplemental manuals, and all electrical schematic/interconnection
drawings provided with the Load Bank prior to installation and operation.
Keep Away From Live Circuits
Operating and Maintenance personnel must at all times observe normal safety regulations. Do not
replace components or make adjustments to equipment with power turned on. To avoid casualties,
always remove power to the entire system. Turn off and disconnect the main-power source under test.
Disconnect all sources of power to the Load Bank (Main input load bus, blower motor circuit, and 120
VAC control circuits).
Shock Hazard
Load Banks contain lethal voltages when connected to the power source. Power to the load resistors
(main input load bus), power to fan motor circuits, and power to 120 VAC control circuits must be
removed before servicing. Allow adequate time after removing power before servicing or touching any
components.
Do Not Service or Adjust Alone
Under no circumstances should any person reach into an enclosure for the purpose of service or
adjustment of equipment except in the presence of someone who is capable of rendering aid.
Safety Earth Ground
An uninterruptible and approved earth ground must be supplied from the main power source. Serious
injury or death can occur if this grounding is not properly supplied. Grounding of this equipment should
be done by qualified personnel only and must be installed in accordance with all applicable national
and local electrical codes and regulations.
Chemical Hazard
No chemicals are included in the manufacturing or operation of this unit. There are no chemical
hazards to consider.
Emergency Aid
Personnel working with or near high voltages should be familiar with modern methods of resuscitation.
Potentially Hazardous Operator Conditions
 Read this manual prior to operation.
 Always run an approved ground conductor from the load bank frame to the power source under
test which in turn must be properly earth grounded.

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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 Do not operate the unit unattended. Access to an approved electrical fire extinguisher should
be on hand at all times.
 Do not operate the Load Bank with access panels removed or doors open. Doing so would
expose personnel to potential injury from electrical shock or from a moving fan blade.
 Careful consideration needs to be taken during installation and equipment location during
operation. -Hot exhaust air can cause damage to other installed equipment.
 Do not direct hot exhaust air in the direction of other installed equipment?
 Do not allow hot-air exhaust to recirculate through the cold-air intake.
 Do not allow objects to enter or block the cold-air intake or hot-air exhaust.
 Do not install any external cold-air intake or hot-air exhaust duct work to the Load Bank for
ventilation.
 The Load Bank must be installed and operated in a cool, well ventilated area with adequate
clearance for both intake and exhaust air. Do not allow hot air exhaust to recirculate into the
cold-air intake.
 The unit should always be operated outdoors in a clean, cool, well-ventilated area free of dust
and debris.
 Operating personnel should avoid and never come in contact with the hot-air exhaust and/or
surrounding covers during operation and for some-time after operation as these surfaces
become hot and may result in a serious burn injury.
 Never bypass any blown fuse.
 Replace any indicator lamps on the operator control panel as required. Each indicator is
important to the protection of the unit and safety of the operator, and is an indication of proper
system operation or failure.
 Do not bypass any safety circuit including but not limited to; air-safety switch, fan motor
overload, exhaust over-temperature switch.
 Always short/shunt current transformer secondary circuits when troubleshooting metering and
instrumentation circuits.
 Operating personnel should not come in contact with hot air exhaust opening, outside panels,
system components, and load resistors for some time after operation.
 A recommended 5 minute cool down period of the blower motor circuit, with no load applied is
recommended as best practice and will protect operating personnel from possible burn injuries.
A 5 minute cool down should adequately remove any residual heat from the Load Bank and
system components.
Emergency Shut-Down
The Emergency STOP pushbutton will immediately turn off control power to the load step application
circuits, blower motor circuits.
In a controlled emergency stop condition, click <LOAD DROP> button on display allowing fan motor to
run while all load steps are disconnected. Turning the “Power On” switch to the “OFF” position will
then turn off all control and blower circuits. Turn off and disconnect the main-power source under test.
Disconnect all sources of power to the Load Bank (Main input load bus), blower motor circuit, and 120
VAC control circuits).
 Maintenance should always be done only by qualified personnel and with all sources of power
disconnected from the unit (main input load bus power, power to all blower fan and control
circuits). Always follow The National Electric Code (NEC), local electrical safety codes, and the
Occupational Safety and Health Act (OSHA) when handling, installing, and operating
equipment to reduce hazards, personal injury and property damage.

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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Safety Symbols
WARNING
Warning notes call attention to a procedure, which if not correctly performed could result in personal
injury.
CAUTION
Caution notes call attention to a procedure, which if not correctly performed could result in damage to
the unit. This symbol indicates that a shock hazard exists if the precautions in the instruction manual
are not followed. The caution symbol appears on the equipment indicating there is important
information in the instruction manual regarding that particular area. This symbol indicates that the unit
radiates heat and should not be touched while hot.
NOTE: Calls attention to supplemental information.
Warning Statements
The following safety warnings appear in the text where there is danger to operating personnel. They
are noted and repeated here for emphasis.
WARNING
Disconnect unit from all power sources before any disassembly or service. Main input Load Bus,
Blower Motor circuits, 120 VAC control circuits.
WARNING
Do not insert a screwdriver or any thin metal objects through the perforated cooling air grilles while the
load bank is in operation. The fan blade and power within the unit could cause serious injury to
personnel and damage to the unit.
WARNING
Do not remove the enclosure covers while unit is in operation or operate with covers removed. Unit will
not properly cool without all covers in place and pose a shock hazard to personnel.
WARNING
Do not touch the enclosure surfaces while the unit is in operation. Enclosure surfaces are hot and
exhaust temperatures can reach in excess of 500ºF when unit is under load and in operation.
WARNING
Do not look into enclosure while in operation. Exhaust temperatures can reach temperatures in excess
of 500ºF when unit is under load and in operation. Dust and or debris may also be present.
WARNING
Do not position the exhaust to blow on other equipment or material susceptible to excessive heat.
Never direct exhaust air towards flammable materials.
Caution Statements
The following equipment cautions appear in the text whenever the equipment is in danger of damage.
They are noted and repeated here for emphasis.

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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CAUTION
Air enters through the bottom/side cold-air intake of the enclosure and exhausts at the top hot-air
exhaust end of the enclosure. Blocking these openings will cause overheating and unit failure.
CAUTION
Do not apply more than the rated Voltage or exceed the power rating of the Load Bank. Excessive
power will damage the internal resistor banks.
CAUTION
Confirm all control voltages before operation. Improper Voltage or Over-Voltage will damage load
resistors, fan motors, and control components.
CAUTION
Confirm that all load, control, and blower connections are securely attached, turned, and tightened,
and that the unit is properly grounded prior to operation. Failure to do so may result in equipment
damage and harm to personnel.
CAUTION
Not using all four (4) mounting holes when anchoring the enclosure will lessen wind load and
mechanical integrity of the unit and may result in equipment damage, property damage, and/or harm
to personnel.
Inspection and Unpacking
As part of your safety program, an initial inspection of all equipment should occur after receiving the
unit. Periodic preventative maintenance and inspections should be performed to ensure system
reliability. Upon receipt of your Load Bank, be sure to carefully unpack the unit and inspect the unit
carefully for any shipping damage. Check for loose, broken or otherwise damaged parts due to
shipping. If damage is noticed, do not unpack the unit. Immediately notify ULB and report any shipping
damage to the freight carrier. Be sure to verify that the part number and ratings listed on the
nameplate match the order specification. The ratings listed on the nameplate are critical –
installing, operating, and energizing the incorrect part number could damage the unit and load
resistors.
If the unit is not damaged, unpack the equipment and remove protective stretch wrap. Remove all
covers and inspect all of the components for visual signs of damage. Immediately notify the freight
carrier and ULB of equipment damage or missing parts. Reinstall packing materials for storage with
exception of stretch wrap. Do not store the unit with the protective plastic in place.
NOTE: Do not reinstall or reapply protective stretch wrap. This material is meant for shipping
protection only. Prolonged storage in stretch wrap may cause condensation damage to powder coat,
painted, or mill galvanized finishes.
Product Overview
TLB-R1000-480-OS Series of Stationary Outdoor Resistive Load Banks are designed for installation
and operations outdoors – typically mounted and secured on a roof or to a concrete pad. The Load
Bank is an industrial power test unit specifically designed for outdoor operation, and will absorb a
balanced resistive load at unity power factor. The Load Bank is a self-contained unit that includes a
Remote Operator Control Panel which allows the user to control and monitor individual-discrete load

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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steps, blower motor circuits, control circuits, and safety circuits. Electrical energy from the power
source under test is absorbed by the load bank resistors and converted into heat. The blower motor
provides the necessary cooling airflow to cool the resistor load elements. The Load Bank Unit contains
all of the necessary principle system components for control and operation.
 Load Circuits: Including load power resistors, load step switching and main input load bus.
 Cooling System: Including integrally powered blower motor and controls.
 Control Circuits: Including 120 VAC controls, load application circuits, blower circuits, and
indicators.
 Automatic Load Dump Circuit: Provides user interface provisions to disconnect and disable
all load steps from a remote device.
 Safety Circuits: Including branch circuit protection for load power resistor circuits, protection
for blower and control circuits, motor overload protection, exhaust over temperature protection,
cooling air-loss protection, wrong voltage protection, load dump indication, and E-Stop.
The Load Bank should never be used without the Fan Blower Motor operating. Inadequate
cooling airflow will result in resistor load elements overheating, fire hazard, and danger to
personnel.
Operating Instructions
General
 All installation should be reviewed and checked by a qualified technician with all local and
National Electric codes observed.
 Ensure all connections are properly tightened and all covers are installed.
 Never operate the unit un-attended.
 All wiring from external power sources to Load Bank Unit should be verified and checked by a
qualified technician with all local and National Electric codes observed.
 All interconnection wiring of Operator Control Unit and Load Bank should be verified and
checked by a qualified technician with all local and National Electric Codes observed.
The following Cautions and Warnings should be strictly enforced:
CAUTION
Operation of the unit with any covers removed will disrupt air flow and allow debris to pass through
resistors possibly damaging equipment.
WARNING
Operation of the unit with any covers removed will pose a shock hazard and danger to personnel.
WARNING
Do not look into the exhaust of the enclosure while in operation. Exhaust temperatures can reach
temperatures in excess of 500ºF when unit is under load and in operation. Dust and or debris may also
be present.
WARNING
Do not touch the enclosure surfaces while the unit is in operation. Enclosure surfaces are hot and
exhaust temperatures can reach in excess of 500ºF when unit is under load and in operation.
WARNING
Do not insert a screwdriver or any thin metal objects through the perforated cooling air grilles while the
load is in operation. The power within the unit could arc over and will cause serious injury to personnel
and damage to the unit.
WARNING
Do not operate under load without fan blower in motion. Immediate equipment damage may result.

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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Operation
Load Power Connection
Connect the power source under test to main input load bus bars and size the load cable per
the NEC (National Electric Code) or any local codes. Correctly sized copper compression lugs
are recommended.
The Load Bank has three main input load bus bars (marked L1, L2, and L3). Load cable
connections are made directly to the respective bus bars which have provisions provided for
suitable mounting.
Load cable conductors from the power source to the load bank should be adequately sized
and protected to handle the maximum rated load, and in accordance to the National Electric
Code and any local codes.-Turn on the power source under test.
 Display (E1A) will turn on.
 Verify – Check Emergency Stop Button (E2A) is in the “Released (Depressed)” operating
position.
 Press green button on Power On/Off Switch (E3A) and orange lamp will illuminate to show that
control power is on.
 Verify that Load Dump switch (E4A) is in OFF (Down ward) Position.
 Use main screen on HMI display (as shown below Fig.1) to set require KW.
Fig.1 Main Screen

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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 Use HMI display touch screen to set require KW. Minimum KW resolution that can be selected
is 25KW. Set desired time duration in Hours (HR.) and Minutes (MIN.) for which selected KW is
to be applied.
 Click <LOAD APPLY> button on Main Screen. This action will start cooling fan and the
preselected amount of load KW will be applied to the power source under test.
Any available combination of incremental KW load values can be turned ON/OFF during operation to
achieve the desired load on the power source under test.
Also, When set time duration is over, load will automatically disconnect and cooling fan will continue to
run for pre-set cooling time of 5 minutes (OR as set in the Maintenance screen)..

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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Safeties
Any alarm condition existing in the load bank is indicated by LOAD BANK ‘SAFETY NOT OK’
indication on the top right corner of the main screen on HMI. To investigate safety NOT OK status,
click <SAFETY> button on Main screen to see following screen (Fig.2)
Fig.2 Safety Parameters
Following table explains various conditions and their settings
Sr.
No.
Alarm Conditions
Settings
Note
1 Over voltage 480VAC, +5%
Set over voltage dial
on E302A protective
relay.
2 Under Voltage 480VAC, -25%
Set under voltage
dial on E302A
protective relay.
3 Phase loss Any one phase from L1/L2/L3
voltage is missing.
4 Phase reverse Either of two phases are
connected in reverse order.
5 Current Sense 40A (Three phases current
imbalance)
Settable in fault
settings screen in

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
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Maint. mode.
6 Over Temperature High Exhaust temperature in
heater element section.
7 Air PR. Switch (For
Heaters)
Loss of cooling air in Heater
section.
8 Panel Door Closed Electrical Cabinet door open.
9 Control Power / E-stop Loss of control power or E-stop is
operated.
Table-1
All load steps are disabled and load cannot be applied unless all above parameters in OK
status (Green Color).
Note: Ensure and check for proper phasing of blower motor and direction of airflow form cold-air
intake to hot-air exhaust. If airflow is exhausted from cold-air intake, shut down the unit, disconnect all
sources of load power, blower power, and control power, and reverse any 2-phase connections to the
blower motor.
CAUTION
DO NOT operate the Load Bank over rated nameplate Voltage as this will cause catastrophic failure.
The operation of the blower motor circuit is critical for safe operation. If the cooling air pressure and/or
over-temp status is NOT OK then, all load steps are disabled and load cannot be applied.
DO NOT attempt to bypass the air switch or over temperature switch as this will cause catastrophic
damage to the unit.
While load test is running following activities can be done from various screens on HMI.

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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Power data
1. Power data display: Click <POWER DATA> button on main screen and following power
data screen will appear(See Fig.3)
Fig.3 Power Data
2. History Data for Power / Voltage / Ampere:
Click <HISTORY DATA> button on Power Data Screen and history data screen showing past
history of Wattage.
Click <Main Screen> button to switch back to Main Screen.
Note:
If USB stick is inserted on USB port on the back of HMI display then “SCREEN CAPTURE” button will
appear on various screens.
Click <SCREEN CAPTURE> button to copy screen image to USB Stick.

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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WARNING
While Load bank is running (with load applied condition) setting Load Dump Switch to ON (upward)
position will cut off all applied load. However, cooling fan will continue to run until pre-set cooling time
is over.
A recommended 5 minute cool down period of the blower motor circuit, with no load applied, should
adequately remove any residual heat from the Load Bank and system components.
WARNING
Click <Load Drop> button any time will cut of all applied load. However, cooling fan will continue to run
until pre-set cooling time is over.

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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Load Profile
Using this feature, load bank can be configured to operate at various load condition for
predetermined time. Following are the steps to configure load profile.
1) While load bank is not running, click <Load Profile> button on main screen, following
screen will appear( See Fig.4)
Fig.4 Load Profile
2) Select no. of load steps from 1 to 10 using drop down menu. Screen will start showing
entry fields for Hours, minutes and KW values depending on number of steps selected
in drop down menu. Following is the example screen if number of steps selected are
10(See Fig.4)

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use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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Fig.5 Load Profile
3) Enter require Hr., Min, and KW values for each step and click <ACTIVATE> button.
a. Now Load bank will start operating with Hr., Min. and KW values selected for
step#1. This will be indicated by flashing of step 1 entry fields.
b. ACTIVATE button will now change to DEACTIVATE meaning load profile run of
load bank can be deactivated and hence applied load can be disconnected
anytime by click on this button.(See Fig.5)
c. Click <BACK> button to display main screen.
d. Flashing <LOAD PROFILE> button on main screen indicates that load bank is
operating with activated load profile.
Note: Following buttons / entries on main screen are disabled when load profile
is active,
i. KW SELECT entry
ii. Load Increase button,
iii. Load Decrease button,
iv. LOAD APPLY button,
v. HR. entry,
vi. MIN. entry,

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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e. Load bank will continue to operate at KW values, Hr and Min selected for
step#1, then after step#2 will be activated and load bank will operate at the
values selected for step#2.This will be indicated by flashing values under that
step.
f. In this way, load bank will continue to operate until the last step is reached.
Then after the entire load will be disconnected. However, cooling fan will
continue to run until pre-set cooling time is over.
WARNING
Click <Load Drop> button any time will cut of all applied load and deactivate LOAD PROFILE.
However, cooling fan will continue to run until pre-set cooling time is over.

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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Operating Multiple Load banks
Multiple load banks (Max. 5) can be operated in ‘Master – Slave’ mode by connecting load
banks in daisy chain networking as shown below (See Fig.6)
Fig.6 Master Salve connection
Note:
1) Maximum 5 Load banks can be connected in Master – Slave mode. So, for load bank
with 1000KW each capacity, multiple load bank operation will provide maximum 5 x
1000KW = 5000KW capacity.
2) Example shown here is for 1000KW load banks. KW Capacity and settings will vary
depending on individual load bank KW capacity i.e. 1000KW, 750KW or 500KW.

ULB PROPRIETARY RIGHTS NOTICE - This document contains the confidential and proprietary information of ULB. You may not possess,
use, copy or disclose this document or any information in it for any purpose without express written permission. Neither receipt from any source,
nor possession of this document, constitutes such permission. Possession, use, copying or disclosure by anyone without express written
permission of ULB is not authorized and may result in criminal and/or civil liability.
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Software set up
Each load bank must be correcting configured using load bank settings screen shown below.
Refer maintenance section below to know how to access this screen on the display.
1) Each Load bank should have unique ID (anywhere from 1~16) assigned.
2) The “First load bank in the network (designated as Master load) bank should have the
lowest ID e.g. ID=1 if other slave load banks in network have ID = 2,3,4,5 i.e. Slave
1(ID=2), Slave 2(ID=3), Slave 3(ID=4) and Slave 4(ID=5).
3) See maintenance section below to know / set ID or Master / Slave mode for the load
bank in the load bank settings’ screen.(See Fig.7)
Fig.7 Load bank Settings
Master (First Load bank in the series) should have following settings in above screen,
THIS LOAD BANK TO OPERATE AS “MASTER”
THIS LOAD BANK ID 1
(Tip: lowest number in the network)
ID OF SLAVE 1 LOAD BANK 2
(Tip: Next higher number from Master Load bank ID)
Slave 1 (Next to Master Load bank) should have following settings in above screen,