Alber ELS2 Operating and installation instructions

ELS2Electrolyte Level Sensor and ELSi2
Electrolyte Level Sensor Interface
Product Description and Installation Guide
Vertiv Corporation
1050 Dearborn Drive
Columbus, Oh 43085

590-2117-501A/SL-29432/4200-140
i
The information contained in this document is subject to change without notice and may not be suitable
for all applications. While every precaution has been taken to ensure the accuracy and completeness of
this document, Vertiv assumes no responsibility and disclaims all liability for damages resulting from use
of this information or for any errors or omissions. Refer to other local practices or building codes as
applicable for the correct methods, tools, and materials to be used in performing procedures not
specifically described in this document.
The products covered by this instruction manual are manufactured and/or sold by Vertiv. This document
is the property of Vertiv and contains confidential and proprietary information owned by Vertiv. Any
copying, use or disclosure of it without the written permission of Vertiv is strictly prohibited.
Notice to Users
Vertiv Corporation reserves the right to make changes to this document without notice to any user or
reseller of this product. Vertiv Corporation also reserves the right to substitute or terminate distribution
of this document, with no obligation to notify any person or party of such substitutions or terminations.

590-2117-501A/SL-29432/4200-140
ii
Albér Customer Service
Vertiv Customer Service is available Monday to Friday, 8:00AM to 4:30PM Eastern Time.
Telephone: [phone]
Email: [e-mail]
Web site: www.vertivco.com
Corporate Office Address:
1050 Dearborn Drive,
Columbus, OH, 43085

590-2117-501A/SL-29432/4200-140
iii
Table of Contents
1. Product Safety Practices.............................................................................................1-1
Use only wire supplied with the installation kit. ........................................................................ 1-1
2. Product Description.....................................................................................................2-1
3. Features........................................................................................................................3-1
3.1 ELS2Sensor Module System Features.................................................................. 3-1
3.2 ELSi2Interface Module System Features............................................................... 3-1
4. Materials Received List ...............................................................................................4-1
4.1 Parts List ............................................................................................................... 4-1
5. ELSi2Interface and ELS2Sensor Module Installation ...............................................5-3
5.1 Overview ............................................................................................................... 5-3
5.2 ELSi2Interface Module Installation ........................................................................ 5-4
5.3 Mounting the ELS2Sensor on the Battery Case..................................................... 5-6
5.4 Connecting the ELS2Sensor Module..................................................................... 5-9
5.5 Network discovery ............................................................................................... 5-10
5.6 Using the ELSi Configurator ................................................................................ 5-10
5.7 Testing the ELS2Sensor Module......................................................................... 5-16
5.8 Troubleshooting................................................................................................... 5-16
6. Monitoring the ELSi2Interface Module and ELS2Sensor Configuration .................6-1
6.1 ELSi2Interface Module and ELS2Sensor Configuration Diagram.......................... 6-1
6.2 Remote Monitoring and Control............................................................................. 6-2
7. Specifications ..............................................................................................................7-1
7.1 ELSi2Interface Module.......................................................................................... 7-1
7.2 ELS2Sensor Module.............................................................................................. 7-1
7.3 System Specifications............................................................................................ 7-2

590-2117-501A/SL-29432/4200-140
iv
List of Figures
Figure 1 - ELSi2Interface and ELS2Sensor Module Connections........................................... 5-4
Figure 2 - ELSi2Interface Module ........................................................................................... 5-5
Figure 3 - ELSi2Interface Module Alarm Contacts Jack.......................................................... 5-5
Figure 4 - Alignment tool in Cradle.......................................................................................... 5-7
Figure 5 - Alignment Tool........................................................................................................ 5-8
Figure 6 - ELS2Sensor Module Connectors............................................................................ 5-9
Figure 7 - Real-Time Data Screen......................................................................................... 5-11
Figure 8 - Alarm Status Screen............................................................................................. 5-12
Figure 9 - Setup Screen........................................................................................................ 5-13
Figure 10 - Tools Screen....................................................................................................... 5-14
Figure 11 - Report Screen..................................................................................................... 5-15
Figure 12 - ELSi2 Interface and ELS2 Sensor Module Configuration Diagram........................ 6-1

590-2117-501A/SL-29432/4200-140
1-1
1. Product Safety Practices
The following describe safety practices particular to the installation or operation of the product.
Equipment Service
Proper installation and testing are essential to the correct functioning of the system. If you have
questions, contact Vertiv and request monitor assistance. Except as explained in this manual, do not
attempt to service Vertiv equipment.
Any adjustment, maintenance or repair of this product must be performed by qualified personnel.
Contact a Vertiv customer service engineer and request assistance. Only qualified and trained personnel
may perform the operations described in this manual. All safety information must be read, understood,
and strictly adhered to before installing, powering up or using the equipment or software (the
"system".)
Equipment Operation
The protective features of this product may be compromised if it is used in a manner not specified in this
guide and/or related operation or installation instructions. This manual describes general installation of
the system. If the system has features or accessories not described in this manual, contact Vertiv.
Fuses
For continued protection, fuses with the required rated current, voltage, and type, such as normal, slow
blow, fast blow or time delay, must be used.
Operating Damaged Equipment
Do not operate damaged equipment. Equipment that appears damaged or defective must be made
inoperative and secured against unintended operation until repaired by qualified service personnel.
Whenever it is possible that the safety protection features built into this product have been impaired,
either through physical damage, excessive moisture or any other reason, remove power and do not use
the product until safe operation can be verified by qualified service personnel. If necessary, contact
Vertiv to ensure the safety features are maintained.
Substituting Parts or Modifying Equipment
The power cord should only be replaced by an equivalent of the same type and rating. Contact Vertiv if a
replacement power cord is needed. Do not replace with an inadequately rated power cord.
Do not substitute parts or modify equipment. Due to the possibility of introducing additional hazards, do
not substitute parts or perform any unauthorized modification to the product. If necessary, contact
Vertiv to ensure the safety features are maintained.
Insulation Rating For Wires
Use only wire supplied with the installation kit.

590-2117-501A/SL-29432/4200-140
2-1
2. Product Description
The ELS2Electrolyte Level Sensor is a non-invasive level sensor with incorporated temperature
monitoring designed for quick installation and easy set up. This device complies with the NERC PRC-005
requirements for electrolyte level inspection. With this sensor, you eliminate unnecessary remote site
visits and will eliminate the required quarterly inspection of battery electrolyte level in your battery
string.
An ELS2system will include one sensor module to be attached to each cell for monitoring electrolyte
level and temperature. Each of these modules will be connected back to a system interface module
called the ELSi2 for processing of data for alarm analysis and reporting.

590-2117-501A/SL-29432/4200-140
3-1
3. Features
3.1 ELS2Sensor Module System Features
An ELS2is mounted on each cell to monitor electrolyte level and temperature. Features for the ELS2
Sensor module include:
•Monitors electrolyte level and temperature of each individual cell within the string
•Electrolyte/Temperature Alarm LED indicates one of the following conditions:
oLow Electrolyte Level Alarm
oCritical Alarm (Incremental Electrolyte reduction beyond Low level; or possible attachment
issue detected)
oSensor Detachment (Fallen Off) Alarm
oTemperature Alarm
•Power/status LED
•Designed for simple field installation or replacement
•Firmware upgradable
•Demo/diagnostic mode button
3.2 ELSi2Interface Module System Features
One ELSi2 module is required for every 62cell group and will include the following features:
•Fault LEDs for cell level (incudes Low electrolyte, Critical alarm, sensor detachment), temperature
and hardware failures (includes Sensor not responding, Network not responding or detached
network cable)
•Form C relays for cell level, temperature and hardware failures
•Configurable alarms for latching and non-latching
•USB interface for viewing real-time data and configuring system
•RS-485 interface for connecting to Vertiv battery monitors or customer owned building
management systems
•Communicates Modbus protocol
•Provide power to all ELS2modules
•Alarm reset button
•Remote alarm reset using wet contacts or via Modbus

590-2117-501A/SL-29432/4200-140
4-1
4. Materials Received List
4.1 Parts List
The following is a list of all the parts associated with the ELS2Electrolyte Level System installation. If any
parts are missing please contact your Vertiv representative.
Part Number
Photo/Drawing
Description
1008-251
ELS2- Electrolyte level sensor module
Up to 62 modules per system
Ref dwg with dimensions
1008-250
ELSi2- Interface module for ELS2
One module per 62 cells/ELS2sensors
Ref dwg with dimensions
1108-100
ELS2–Sensor Mounting Cradle Assembly
One Cradle and One Cable Lock per
Sensor Module
1408-151
ELS2–Cradle Installation Alignment Tool
1108-170-R6
1108-170-R8
1108-170-R10
1108-170-R18
1108-170-01
1108-170-02
1108-170-03
1108-170-04
1108-170-05
1108-170-06
1108-170-10
1108-170-15
Cable, ELS2Sensor and ELSi2
Interconnect
Lengths and quantity vary depending on
string configuration
1108-170-XXX
RXX = Length in inches
XX = Length in feet

590-2117-501A/SL-29432/4200-140
4-2
1108-170-20
1108-170-25
1108-170-35
1108-171-02
1108-171-10
1108-171-25
1108-171-50
1108-171-100
Cable, ELSi2to BDS-256 alarm interface
1108-171-XXX
XXX = Length in feet
1108-172-10
1108-172-25
1108-172-50
1108-172-100
Cable, ELSi2to UXIM alarm interface
XXX = Length in feet
1108-173-10
1108-173-25
1108-173-50
Cable, ELSi2 alarm interface Open
1108-173-XX
XX = Length in feet
1108-176-50
1108-176-100
RS-485 Cable
KIT-1208-100
ELS2 Communication Interface Kit:
•2140-036: Term BLK 11Pos.200
CTR
•2140-048: PLUG 2POS .150
CENT.
•2025-108: USB Cable
KIT-4000-101
ELSi2Power Kit:
•4000-101: 12VDC power supply
•6003-001: AC power cable
KIT-4000-099
BDS-256XL/ELSi2 Power Kit
•4000-099: 24V to 12VDC Inverter
•6003-029: 12V Power Cable
•6003-080: 50’ Zip Cord
4200-217
ELS2Documentation KIT
•590-2117-501A/SL-29432/4200-
140: ELS2PDG/Installation
Guide

590-2117-501A/SL-29432/4200-140
5-3
Table 2 - Inventory List (Continued)
5. ELSi2Interface and ELS2Sensor Module
Installation
5.1 Overview
The following diagram illustrates how the ELSi2interface module and ELS2sensor modules are
connected on a string of batteries. The supplied cables are determined at time of ordering and are
tailored for a specific string configuration. Refer to the following sections for detailed information on
installing the ELS2system.
•2027-040: CD Software
Configurator ELS2
5400-017
Plastic Scraper
1608-001
Cleaning Wipes
2400-114
Replacement Cell Labels
•

590-2117-501A/SL-29432/4200-140
5-4
Figure 1 - ELSi2Interface and ELS2Sensor Module Connections
5.2 ELSi2Interface Module Installation
Mount the ELSi2module securely on the wall or some other surface suitable that will allow access to the
module for viewing the LEDs or gaining access to the USB for connecting to a PC. Two 3/16” mounting
holes are provided. Ensure that the location selected is within the distance of the supplied interface
cables. This cable length is specified at time of ordering and will be one of the 1108-170-XX cables. One
ELSi2 module is required for every 62 ELS2sensor modules.
Note: The alarm reset button allows to manually resetting the alarms on the ELSi2interface module by
pressing the button on the right side of the module for 5 seconds or by providing 5V on the alarm reset
input. All alarms on the ELS2 sensor modules must be cleared before resetting the alarm on the ELSi2
interface module.
The table below describes the connections on the ELSi2interface module.

590-2117-501A/SL-29432/4200-140
5-5
Figure 2 - ELSi2Interface Module
Power source
12VDC. Connect the supplied power supply to the power jack on
the side. If integrating to a UXIMe, this power connection can be
made directly from that unit
USB
The USB connection is for connecting a computer to configure the
system or to view data real-time.
ELS2“Sensor Network”
Connection
The RJ11 ELS2jack connects the four conductor CAT5 cable from
the ELSi2interface module to the “In” jack on the first ELS2sensor
module.
Warning: Verify that the output of the ELSi is connected to
an ELS input.
Do not connect the RJ11 output jack to the output of any ELS.
Figure 3 - ELSi2Interface Module Alarm Contacts Jack
RS-485
The RS485 connection is used for connecting directly to the UXIMe
battery monitor or a customer building management system.
Refer to the UXIM(e) PDG for the RS-485 connection description.
Reset/Alarm Contacts
There are three sets of form “C” Contacts and can be connected
directly to an Vertiv monitoring system or Building Management

590-2117-501A/SL-29432/4200-140
5-6
Connection
System. See figure 3 ELSi2Interface Module Alarm Contacts Jack
for more detail.
Note:
•For connecting to BDS-256XL battery monitors, the
optional digital input module will need to be installed on
the BDS-256XL Controller.
•For connecting to UXIM or UXTM battery monitors, the
digital inputs should be configured as dry contact inputs.
Refer to the PDG of the respective product for digital input the
connection description.
Remote Alarm Reset
Allows an external set of contacts to remotely reset the alarms by
providing a logic level of 5V between these two pins.
What is this?
5.3 Mounting the ELS2Sensor on the Battery Case
Important: Surface preparation is extremely important, and should be carried out to Vertiv’s
specification.
If existing cell number labels need to be relocated, use the provided plastic scraper to remove the
existing labels.
Replacement Battery Numbering Labels are available.
Important: The ELS2sensors will not function properly if mounted on stickers or labels.
If the cell has electrolyte levels affixed with lables, then try relocating the ELS sensor.
If relocation of the ELS2is not possible, then the electrolyte level stickers will have to be removed using
the provided plastic scraper.
Use the provided cradle and alignment tool to place the sensor’s cradle in the correct position for
electrolyte level monitoring.

590-2117-501A/SL-29432/4200-140
5-7
Use the alignment tool inserted inside the sensor cradle as shown in Figure 4
Figure 4 - Alignment tool in Cradle.
For mounting the ELS2sensor cradle, follow these steps:
1. Verify the electrolyte level in the battery is over the middle level between the low and high-
level lines. If the electrolyte is below the average level, add more distilled water.
1. Clean battery case surface where sensor will be mounted.
a. If the cells are excessively dirty, Vertiv recommends using NAB Citrus Cleaner Concentrate
(https://northamericanbio.com) cleaning solution as an alternative to the wipes included
in the kit. This solution cannot be used in the concentrated form and requires dilution (8oz
per 1 gallon for dilution). After use the battery surface must be wiped off with water using
a new rag.
Important: First clean all the cells comprising the battery to allow for the required
drying time.
The closed-cell 3M adhesive attached to the cradle will not function properly if the cells
are not dry prior to mounting the cradle.
Do not mount the cradles until all the cells have been cleaned with the provided wipes.

590-2117-501A/SL-29432/4200-140
5-8
Figure 5 - Alignment Tool
2. Peel off the protective cover on cradle’s double side adhesive tape.
3. Place the alignment tool inside the cradle and find the right position of the cradle in the battery
case. Do not allow the cradle to touch the battery case until the cradle is in the right position.
a. Move the cradle until the alignment tool top opening shows alignment with the battery
case low level line bottom edge as shown in Figure 5.
b. Important: Make sure that no paint, scratches of opaque labels are visible
through alignment tool openings.
c. Apply a firm pressure on the cradle to fasten on the battery case using the cradle’s
adhesive tape.