Power Innovations Q-LS ATS User manual

Export Classification EAR99
Q-LS ATS
MNL128
Rev 3.1

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READ THIS MANUAL
CAREFULLY SAVE ALL
INSTRUCTIONS
This manual contains important information needed to operate the Q-LS™safely and efficiently. Please
read all instructions carefully before installing or operating equipment.
Keep this manual handy for easy reference.
ELECTRICAL WARNING
Applying information contained in this manual to any other product, including
customized Q- LS systems with nonstandard specifications, may cause injury.
Q-LS™ATS system are registered trademarks of Power Innovations International, Inc. are trademarks of Power
Innovations International, Inc.
This manual may accompany other instructional addendums about additional customizations to standard
Q-LS™systems. Please contact Power Innovations if additional manuals are needed and have not been
received.
Product names mentioned herein may be trademarks and/or registered trademarks of their respective companies.
Copyright © 2020-2023
Power Innovations International, Inc., American Fork, UT, USA
All rights reserved.

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Table of Contents
1—Introduction........................................................................................................................................................................1
1.1 —Using this Manual ................................................................................................................................................1
1.1.1 —Conventions Used in This Manual.......................................................................................................................1
1.2 —Safety Warnings and Cautions ............................................................................................................................3
1.2.1 —Manual Use..........................................................................................................................................................3
1.2.2 —Installation and Maintenance...............................................................................................................................3
1.2.3 —Safe Transport and Storage.................................................................................................................................4
1.2.4 —Operation .............................................................................................................................................................4
1.2—ATS Topology.............................................................................................................................................................4
2—Installation .........................................................................................................................................................................7
2.1 —Selecting an Appropriate Location.......................................................................................................................7
2.1.1 —Ventilation Space.................................................................................................................................................7
2.1.2 —Environmental Protection.....................................................................................................................................8
2.2 —Cable Installation .................................................................................................................................................9
2.2.1 —Grounding ............................................................................................................................................................9
2.2.2 —Connecting Cables...............................................................................................................................................9
3—Operation.........................................................................................................................................................................11
3.1 —Switching ON the ATS.......................................................................................................................................11
3.2 —Switching OFF the ATS .....................................................................................................................................11
3.3 —Entering Bypass Mode.......................................................................................................................................11
3.4 —Exiting Bypass Mode..........................................................................................................................................12
4—LCD Panel .......................................................................................................................................................................15
4.1 —Flowchart Display...............................................................................................................................................16
4.1.1 —Input LED Indicators ..........................................................................................................................................16
4.1.2 —Output LED Indicators........................................................................................................................................17
4.2—Status Notification.....................................................................................................................................................18
4.2.2 —Notification/Alarm Buzzer...................................................................................................................................19
4.3 —Menu Navigation Section...................................................................................................................................20
4.3.1 —Basic Key Operation ..........................................................................................................................................20
5—Navigating Menus............................................................................................................................................................21
5.1 —Main Screen.......................................................................................................................................................22
5.2 —Select Menu.......................................................................................................................................................22
5.2.1 —Status/Warn/Fault Screen..................................................................................................................................22
5.2.2 —Real-Time Data Menu........................................................................................................................................23
5.2.3 —Historical Data Screen .......................................................................................................................................25
5.2.4 —Parameter Setting Menu....................................................................................................................................26
5.2.5 —MODBUS Baud Rate Setting Menu............................................................................................................29
5.2.6 —Date/Time Setting Screen...........................................................................................................................30

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6—Dry Contacts....................................................................................................................................................................31
6.1—Notification Meanings...............................................................................................................................................31
7—Product Specifications.....................................................................................................................................................33
Appendix A—System Topology ............................................................................................................................................35
Appendix B—MODBUS Information .....................................................................................................................................37
B.1—MODBUS Slave ID...................................................................................................................................................37
B.2—MODBUS Data Definition.........................................................................................................................................37
B.3—Holding Register.......................................................................................................................................................40
Warranty ...............................................................................................................................................................................42
Limited Warranty ...............................................................................................................................................................42
Repair or Replacement ........................................................................................................................................................42
Proof of Purchase ................................................................................................................................................................42
Legal Rights and Restrictions ..............................................................................................................................................42
Limitation of Remedies........................................................................................................................................................42
Warranty Claims ................................................................................................................................................................42
Claim Restrictions .......................................................................................................................................................42
Making a Claim............................................................................................................................................................42
Replacement of Parts/Components ...........................................................................................................................42
Contacting Power Innovations.................................................................................................................................................43
Customer Support .............................................................................................................................................................43
Contacting Power Innovations ............................................................................................................................................43

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1—Introduction
Congratulations on purchasing Power Innovations International, Inc.’s Q-LS Series uninterruptible power quality
(UPQ) system. Power Innovations prides itself on the long life of its UPQ systems and hopes that this system will
serve you well for a long time.
The Q-LS™Asynchronous Transfer Switch (ATS) is designed to help ensure system uptime by switching to a
secondary power source if the primary power source goes outside a specified safe range. The ATS uses
advanced circuitry and a paired static switch to ensure switching happens without any interruption in output
power.
This ATS cabinet features an easy-to-use LCD display, LED lights, and a status indicator showing the power
flow. Depending on its capacity, the system comes in either a single-wide or double-wide cabinet. Using
MODBUS, the ATS can be remotely monitored.
Manual Helps
For warranty and customer service information about this product, see the warranty
information at the back of this manual.
1.1—Using this Manual
This manual will show how to safety receive, unpack, and install Power Innovations’ ATS cabinet. Read and
understand this manual to make installing and operating the system as easy as possible.
1.1.1 —Conventions Used in This Manual
To make this manual easier to read, several formatting conventions have been adopted.
1.1.1.1 —ADDITIONAL ADVICE
This manual will occasionally provide additional advice. When it is provided, this information will be
enclosed by a set of lines to separate it from the rest of the text, like this:
This text does not belong with the rest.
Some of the information is very important, while other information may be good to know. To show the
importance of each piece of information, the following symbols are used:
ELECTRICAL WARNINGS
Denotes advice that, if not followed, could cause severe bodily harm or death
due to electrical shock.

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WARNINGS
Denotes advice that, if not followed, could cause severe bodily harm or death
due to other types of injury.
Cautions
Offers advice that, if not followed, may harm equipment or indirectly cause physical
hazards.
Notes
Offers practical advice that may be helpful, but can be disregarded.
Additionally, the following symbols indicate information intended to clarify information listed in the manual.
For example…
Provides an example intended to illustrate information presented in the text.
Manual Helps
Provides references to other sections in this manual that could also be helpful.
Additional Manual
Provides references to other manuals that may also be provided with thissystem.
Usually these symbols will be listed in order of importance.
1.1.1.2 —BREAKER POSITIONS
Because some breakers on the front of the Q-LS Series share names with its subsystems or operation
modes, breakers and their positions will be identified using all caps. Additionally, the words CLOSED
and OPEN are always capitalized to stress which position is correct.
This convention exists to prevent the system components from becoming confused with names of
breakers. Skimming the words that are capitalized can also serve as a quick-reference method for
learning the functions of the breakers located on the front of the unit.
1.1.1.3 —KEY IDENTIFICATION
The first time a key located on the display is mentioned, both the name of the key and the symbol used on
the key will be included. In the following references, only the symbol for the key will be used.
1.1.1.4 —TYPE CONVENTIONS
Menu options will be placed in uppercase letters and formatted as they appear onscreen.

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1.1.1.1 —CABINET VS. SYSTEM
In this manual, the word cabinet refers to the actual Q-LS cabinet (or cabinets, for multi-cabinet systems).
An external battery cabinet (or cabinets, for more than one string of batteries) will be referred to as a
battery cabinet or battery unit.
The entire power quality system will be referred to as an uninterruptible power quality system (or UPQ), a
Q-LS or a Q-LS system. These terms do not refer to one cabinet or set of cabinets.
They refer to the full system and everything that supplies power to it, including the battery cabinets, the Q-LS
cabinet that controls the system, and any other cables or external controls.
1.1.1.2 —PHASE NAMES
This manual and the Q-LS Series system use both the global standard (R, S, T) and the North American
standard (A, B, C) for the power phases and terminal connections.
On all labels, documentation, and components, they are used interchangeably: R=Phase Connection A;
S=Phase Connection B; T=Phase Connection C.
1.2—Safety Warnings and Cautions
This section provides important information that you will need to remember in order to safely operate your system.
Read it carefully.
This manual provides very little information about maintaining the unit. Such information is provided in a separate
manual.
All maintenance must be performed by a service technician who has completed a training and certification course
on the Q-LS system offered through Power Innovations. During that training course, a separate manual is provided
to the service technician to use while maintaining the unit.
For ease in reading warnings and cautions, they have been divided into four sections, Manual Use,
Installation and Maintenance, and Safe Transport and Storage.
1.2.1 —Manual Use
Read this manual carefully before operating or troubleshooting the ATS, and
follow all operating instructions. Failure to do so may cause physical harm or
death.
Obey all warnings within this manual. Failure to do so may void the system warranty.
1.2.2 —Installation and Maintenance
The ATS must be bonded to the facility electrical system.
This system contains high voltage power that is potentially dangerous if not handled
properly. All repairs should be performed only by those who have completed Power
Innovations’ service training course. In order for the warranty to apply, wiring for the
ATS and attached systems must be commissioned by personnel who have completed
Power Innovations’ Q-LS training and certification course.

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This unit contains no interior parts that can be serviced without qualified personnel. If
troubleshooting processes specified in this manual fail to solve a problem, qualified personnel
must service the unit.
In order for ATS and attached Q-LS systems to operate properly, it should be periodically
inspected and cleaned. This routine inspection and cleaning should be completed every 90–
180 days.
1.2.3 —Safe Transport and Storage
To avoid accidental worker injury, place this system in an area with limited access and
ensure that all cables are placed carefully.
The Q-LS and ATS should be stored in a temperature-controlled indoor environment
that is clean, dry, and free of flammable liquids and corrosive substances such as
hazardous gases.
The ATS cabinet should be transported carefully so that the unit is not damaged. Avoid
dropping the unit, tipping it upside down, or any other rough handling.
1.2.4 —Operation
Retain the load within the Q-LS system rating guidelines to ensure that the ATS
functions well. DO NOT insert any object into any of the ventilation holes or any other
cabinet openings
1.2—ATS Topology
The ATS has two input sources, the primary (Input A) and the secondary (Input B) (Figure 1).
Figure 1: A/B Power Flow Topology
The ATS will provide output power from the primary source as long as the primary source is in the specified voltage and
frequency range. If the primary source goes out of range, the ATS will automatically switch to the secondary input
without interrupting output power.
When the primary source returns to within the specified range for at least three (3) seconds, the ATS will
automatically switch back to the primary power source.
The Q-ATS static switch enables the system to automatically switch between primary and secondary input sources
without interrupting output power. The static switch is composed of two pairs of Silicon Controlled Rectifiers (SCRs)
with a shared output.
Detection circuitry allows immediate power switching and to confirm that switching has occurred.

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Manual Helps
See Appendix B—System Topology for a detailed diagram of the Q-ATS.
1.3.1—Modes of Operation
The ATS has four different operational modes:
1.1.1.1 —OUTPUT ON A
When operating normally, power enters the system through the primary (A) input and exits through the output.
Both the primary (A) and secondary (B) input breakers and the output breaker should be closed
(ON). Both bypass breakers should be open (OFF).
1.1.1.2 —OUTPUT ON B
If the primary (A) input goes outside of the specified acceptable voltage and frequency range, the static
switch will automatically switch. Power will then enter the system through the secondary (B) input and exit
through the output.
Both the primary (A) and secondary (B) input breakers and the output breaker should be closed
(ON). Both bypass breakers should be open (OFF).
1.1.1.3 —BYPASS A
Automatic switching is disabled using the primary (A) BYPASS breaker. When the A BYPASS circuit
breaker is closed (ON), automatic switching is disabled and power is routed only from the selected input
to the output.
After putting the system in Bypass mode, both the A and B INPUT breakers should be OFF. Bypass mode
can be used to perform maintenance, such as replacing fans or Rapid-Replace Modules, without
interrupting power output.
1.1.1.4 —BYPASS B
Automatic switching is disabled using the secondary (B) BYPASS breaker. When the B BYPASS circuit
breaker is closed (ON), automatic switching is disabled and power is routed only from the selected input to
the output.
After putting the system in Bypass mode, both the A and B INPUT breakers should be OFF. Bypass mode
can be used to perform maintenance, such as replacing fans or Rapid-Replace Modules, without
interrupting power output.
ELECTRICAL WARNING
Never close both bypass breakers at the same time. Closing both bypass breakers
will short both sources together.

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2—Installation
The ATS cabinet must be properly installed in a suitable location. The ATS should be in close proximity to the
system(s) that it will control.
ELECTRICAL WARNING
Failure to properly install the cabinet could result in damage to the system, as well as
injury to personnel servicing the system.
2.1—Selecting an Appropriate Location
For optimal ATS operation, the
location in which the cabinet will
operate should be chosen
carefully.
2.1.1 —Ventilation Space
The cabinet should be installed in a
location with:
• Adequate front
access (1 m) to open
the front door.
• At least 1 m above
the system for proper
ventilation.
• At least 1 m to
cabinet’s side or rear
for maintenance
access.
• Ample airflow to
drawheat away
from the operating
system.
Figure 4: ATS Clearances
Single Wide
Double Wide

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2.1.2 —Environmental Protection
The installation site should be free of combustible materials, including combustible:
• Walls
• Ceiling
• Floors
• Nearby items (whether mobile or mounted)
Table 1 presents other important considerations for environmental and personnel protection.
Table 1: External Installation Conditions
Condition
Optimal
May Work
Avoid
Temperature
32 °F –77 °F
0 °C –25 °C
77 °F –104 °F
0 °C –40 °C
<32 °F (0 °C)
>104 °F (40 °C)
Surface
Reinforced; noncombustible;
even; system mounted.
Leveling brackets added.
System mounted. Floor
reinforced.
Noncombustible surface.
Uneven surfaces; unmounted
systems; weak flooring;
combustible flooring.
Humidity
Less than 80% noncondensing.
--
-
More than 80% noncondensing.
Room location
Away from all heat and
moisture. Close to easily
accessible fire extinguisher.
--
-
Beneath the shower of fire
sprinklers; near heat sources;
distant fire extinguishers.
Exposure
to
Elements
Indoors; completely protected
from dust, debris, moisture.
Shielded by lean-to or overhang.
Direct (wind, rain, sunlight,
snow, sand, dust).**
*For more information about mounting refer to 6.1—Placing and Mounting in the Q-LS Series
Installation and Operation Manual.
**For complete protection against the elements, Power Innovations offers the option of installing the ATS
inside a weather-safe container.
ELECTRICAL WARNING
Improper site selection could cause injury or void the system warranty.
Caution
Not installing the ATS in a protected environment may result in poor system operation.

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2.2—Cable Installation
The ATS is connected to the output load(s) and Power Supplies from the Q-LS A and Q-LS B systems by
cables connected to terminal blocks inside the base of the ATS. The connections between the ATS output and
the load(s) should be made before the ATS is connected to input supplies A and B.
ELECTRICAL WARNING
Confirm that input power to the ATS is turned OFF and locked out before
beginning the installation.
2.2.1 —Grounding
The ATS must be grounded to the facility electrical system.
When replacing panels removed for service or installation, always make sure that the individual panel grounding
connectors are connected.
ELECTRICAL WARNING
Not checking ground connections could cause death by electrocution.
2.2.2 —Connecting Cables
The cabinet should be connected by a certified electrician, using appropriately sized cables.
Cables should be installed using fixed conduit or other applicable methods as allowed by local electrical codes.
Caution
Cables of incorrect length, construction, or size could cause damage or impair the system.

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3—Operation
3.1—Switching ON the ATS
To turn the ATS ON:
Switch ON the INPUT A breaker.
Switch ON the INPUT B breaker.
Switch ON the OUTPUT breaker.
3.2—Switching OFF the ATS
To turn the ATS OFF:
Switch OFF the OUTPUT breaker.
Switch OFF the INPUT B breaker.
Switch OFF the INPUT A breaker.
3.3—Entering Bypass Mode
ELECTRICAL WARNING
Only one BYPASS breaker should ever be turned ON at any given time. Turning
on both BYPASS breakers will short both sources.
A mechanical interlock is installed on the breaker section dead-front to prevent
electrical arcing. If this dead-front panel is removed, no other interlocking method
is present.
1
3
3
2
1
2

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To put the ATS in bypass mode:
Turn ON the BYPASS breaker corresponding to the currently selected input source (for
example, if the output is powered by source A, turn ON BYPASS A).
ELECTRICAL WARNING
Never turn ON a BYPASS breaker not corresponding to the currently
selected input source. Turning ON the wrong BYPASS breaker may cause an
electricalshort.
Turn OFF the OUTPUT breaker.
Turn OFF both INPUT breakers.
Open all fuses located behind the main control panel.
3.4—Exiting Bypass Mode
To return from bypass mode to normaloperation:
Close all fuses located behind the ControlPanel.
Caution
Failure to open the fuses will not allow the Static Switch to activate.
Turn ON the INPUT breaker for the line that is currently being used for Bypass.
For example…
For example, if Bypass A is active, close INPUT breaker A.
1
2
4
3
2
1

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Make sure the Static Switch LED for the currently active line is illuminated before
proceeding to the next step.
Caution
Failure to wait for this light to illuminate will cause the load to be dropped.
Turn ON the OUTPUT breaker.
Turn OFF the BYPASS breaker.
The system is now back to normal operation.
5
4
3

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4—LCD Panel
The LCD panel is located at the top-center inside the front door of the ATS
cabinet. The panel consists of three main sections:
1 A flowchart display located in the center of the LCD panel.
2 Status notifications via a bank of Status/Warning LED lights and a buzzer indicator.
3 Menu navigation and ATS control via navigation keys and the LCD Display.
Figure 7: ATS LCD Display

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4.1—Flowchart Display
The flowchart display is a power flow topology equipped with a bank of eight (8) LED lights (Figure 4). These
lights provide an easy-to-read status update for the system.
Figure 10: ATS Flowchart Display
4.1.1 —Input LED Indicators
1 Bypass Input A—Illuminates when the INPUT A BYPASS breaker is closed (ON).
Output current is provided by Input A.
Automatic switching is disabled when the system is in Bypass mode.
2 Bypass Input B—Illuminates when the INPUT B BYPASS breaker is closed (ON).
Output current is provided by Input B.
Automatic switching is disabled when the system is in Bypass mode.
Figure 13: Flowchart Input LEDs