YOKOGAWA BA11 User manual

IM 12B06W03-01E-E
5th edition
Instruction
Manual Model BA11
Active Junction Box
YOKOGAWA

IM 12B06W03-01E-E
Contents
PREFACE 1
1. Introduction 1
1-1. Unpacking and Checking 1
1-2. Warranty and Service 1
1-3. Serial Number definition 2
1-4. Safety Precautions 2
1-5. Warning and Disclaimer 3
1-6. Copyright and Trademark Notices 3
2. Specifications 4
2-1. Environment and operational conditions 4
2-2. Regulatory standards 5
2-3. External dimensions and pin assignment of connectors 7
3. Preparation 8
3-1. Installation 8
3-2. Mounting options for BA11 Active Junction Box 8
3-2-1. Instructions for mounting BA11 on the mounting bracket, with or
without using the NEMA 4X bracket 8
3-2-2. Instructions for pipe mounting 9
3-2-3. Instructions for wall mounting 10
3-2-4. Instructions for mounting at backside of FLXA402 analyzer 10
4. Model code 11
5. Spare parts 11
6. Control Drawing D&E 2019-012-A60 12

IM 12B06W03-01E-E
1
Thank you for purchasing the BA11 Active
Junction Box.
Please read this Instruction Manual carefully
before installing and using the BA11 Active
Junction Box.
Please also read the instructions that are
associated with the sensors and devices
you are connecting to the junction box. The
purpose of these user’s manuals is not to
warrant that the product is well suited to any
particular purpose but rather to describe the
functional details of the product.
No part of the user’s manuals may be
transferred or reproduced without prior
written consent from Yokogawa Process
Analyzers (hereafter simply referred to
as YOKOGAWA). YOKOGAWA reserves
the right to make improvements in the
user’s manuals and product at any time,
without notice or obligation. If you have
any questions, or you find mistakes or
omissions in the user’s manuals, please
contact our sales representative or your
local distributor.
Some drawings may be partially
emphasized, simplified, or omitted, for the
convenience of description.
1. Introduction
1-1. Unpacking and Checking
Upon delivery, unpack the BA11 Active
Junction Box carefully and inspect it to
ensure that it is not damaged during
shipment. If damage is found, retain the
original packing material and immediately
notify the owner and the relevant local
Yokogawa Sales office. Make sure the
Model Code and Serial Number on the
BA11 (see figure 1) are the same as on
the packing list. Also check if option(s) that
were ordered are included and correct.
1-2. Warranty and Service
Yokogawa products are guaranteed free
from defects in workmanship and materials
under normal use and service for a period
of (typically) 12 months from the date of
shipment from the manufacturer. Individual
Sales organizations can deviate from the
typical warranty period, and the conditions
of sale relating to the original purchase
order should be consulted. Damage caused
by wear and tear, inadequate maintenance,
corrosion, or by the effects of chemical
processes is excluded from this warranty
coverage. In the event of a warranty
claim, the defective goods should be sent
(freight paid) to the Service Department
of the relevant Yokogawa Sales office for
replacement (at Yokogawa’s discretion).
1
PREFACE
Figure 1. Example of BA11 product label

IM 12B06W03-01E-E
2
The following Information must be included
in the letter accompanying the returned
goods:
• Model Code and Serial Number
• Original Purchase Order and Date
• Length of time in service
• Description of the fault and circumstances
of the failure
• Process/environmental conditions that
may be related to the failure of the sensor
• Statement as to whether warranty or non-
warranty service is requested
• Complete shipping and billing instructions
for return of material, plus the name and
phone number of a contact person that
can be reached for further information
1-3. Serial Number definition
The Serial Number is defined by nine (9)
alphanumeric characters:
X1,X2: Production Location
X3, X4: Year/Month code
X5, X6, X7, X8, X9: Tracking number
Example: N3P600028
See table 1 and 2.
Table 1: Production Year code
Year Year code Year Year code
2014 P 2027 4
2015 R 2028 5
2016 S 2029 6
2017 T 2030 7
2018 U 2031 8
2019 V 2032 9
2020 W 2033 A
2021 X 2034 B
2022 Y 2035 C
2023 Z 2036 D
2024 1 2037 E
2025 2 2038 F
2026 3 2039 G
Table 2: Production Month code
Month Month code
January 1
February 2
March 3
April 4
May 5
June 6
July 7
August 8
September 9
October A
November B
December C
1-4. Safety Precautions
In order to protect the system controlled
by the product and the product itself and
ensure safe operation, observe the safety
precautions described in this user’s manual.
We accept no liability for safety if users
fail to observe these instructions when
operating the product. If this instrument
is used in a manner not specified in this
user’s manual, the protection provided by
this instrument may be impaired. If any
protection or safety circuit is required for the
system controlled by the product or for the
product itself, prepares it separately.
Be sure to use the spare parts defined by
YOKOGAWA for replacement. Modification
of the product is strictly prohibited because
it may be hazardous to operate. Please
contact Yokogawa before making any repair
or modification.
The following safety symbols are used on
the product as well as in this manual.
This symbol indicates that an operator must
follow the instructions laid out in this manual
in order to avoid the risks, for the human
body, of injury, electric shock, or fatalities.
The manual describes what special care the
operator must take to avoid such risks.

IM 12B06W03-01E-E
3
General
• The BA11 should only be used with
equipment that meets the relevant EU,
American, Canadian, and Japanese
standards. Yokogawa accepts no
responsibility for the misuse of this unit;
• The BA11 is packed carefully with shock
absorbing materials, nevertheless, the
BA11 may be damaged or broken if
subjected to strong shock, such as if the
BA11 is dropped. Please handle with
care;
• The BA11 contains devices that can be
damaged by electrostatic discharge.
When servicing the BA11, please observe
proper procedures to prevent such
damage;
• Do not use an abrasive or organic solvent
in cleaning the BA11.
The BA11 is an IEC/EN61326-1 Class A
product, and it is tested for use in the
industrial environment.
Specific Conditions of Use
If the BA11 product is not installed using
Nonincendive Field Wiring, then the BA11
product shall be installed in compliance
with the enclosure, mounting, spacing and
segregation requirements of the ultimate
application, including a tool removable
cover.
To maintain the IP66 rating, the BA11
product shall be installed using the WU11
cables or the original connector caps
supplied with the BA11 product.
To maintain the Type 4X rating, the BA11
product shall be installed using the WU11
cables or the original connector caps
supplied with the BA11 product, and the
BA11 product shall be installed using the
tool secured, NEMA 4X identified mounting
bracket which is part of option UM.
Product Disposal
The instrument should be disposed of
in accordance with local and national
legislation/regulations.
1-5. Warning and Disclaimer
The product is provided on an “as is” basis.
YOKOGAWA shall have neither liability nor
responsibility to any person or entity with
respect to any direct or indirect loss or
damage arising from using the product or
any defect of the product that YOKOGAWA
cannot predict in advance.
1-6. Copyright and Trademark Notices
The copyrights of online manual are
reserved. The online manual is protected
against modification by the PDF security,
however it can be output via a printer.
Printing out the online manual is only
allowed for the purpose of using the
product. When using the printed information
of the online manual, check if the version
read is the most recent one.
Adobe, Acrobat and Acrobat Reader are
either registered trademarks or trademarks
of Adobe Systems Incorporated in the
United States and/or other countries.
All other company and product names
mentioned in this user’s manual are
trademarks or registered trademarks of their
respective companies.
We do not use TM or ® mark to indicate
those trademarks or registered trademarks
in this user’s manual.

2. Specifications
The main function of BA11 is auto switching of 120 Ω line termination at RS-485 bus
to keep the communication balanced when Modbus slave device is disconnected. The
BA11 box detects if a Modbus slave device is connected to the port (J1..J4). If not, the
communication terminator is connected. If a Modbus slave is connected to a port (J1..J4),
the terminator is disconnected automatically.
2-1. Environment and operational conditions
- Power supply voltage +2.7 VDC to +5.5 VDC
- Max. power consumption* < 30 mW (@ +5.5 VDC, without connection of field devices)
- Operational temperature -20ºC to +55°C (-5 ºF to +130 ºF).
- Storage Temperature -30°C to +70°C (-20 ºF to +160 ºF)
- Maximum ambient humidity 93% at +40°C (+100 ºF) (non-condensing)
Note: Total power consumption depends on number of Field Devices and the amount of
Modbus registers read from individual Field Device in time.
Other
- IP classification IP66 (acc. ANSI/IEC 60529:2004; C22.2 No. 60529:2016)
- NEMA classification Type 4X (acc. NEMA 250:2014; ANSI/UL 50E:2015)
Mechanical
- Size (LxWxH) 150 x 64 x 34 mm (5.9 x 2.5 x 1.3 inch)
- Color Grey (RAL 7001)
- Material Aluminium Die Cast housing
- Applicable torque on cover
screw (to meet IP66) Min. 1.1 Nm Max. 2.5 Nm
- Applicable torque on BA11
connector screws and
protection caps (to meet IP66) 0.25 Nm
- Mounting options /UM Universal Mounting
Connection
- Bus-Input (BUS-IN) M9 5-pin male connection to Modbus HOST/Master
(e.g. FLXA 402).
- Bus-Output (BUS-OUT) M9 5-pin female connection (for future application purpose)
- Field device Inputs (J1..J4) M9 5-pin female connection.
All connections have to be used with the correct Yokogawa WU11 Interconnection cable
up to a length of 100 meter (328 ft).
For connection method and maximum allowed cable length in a Class I, DIV 2 location,
then refer to the enclosed Control Drawing D&E 2019-012-A60.
IM 12B06W03-01E-E
4

IM 12B06W03-01E-E
5
2-2. Regulatory standards
• CE By applying:
(768/2008/EC) - EN-ISO 9001: 2008.
EMC Directive By applying:
(2014/30/EU) - IEC 61326-1:2012 Electrical equipment for measurement,
control and laboratory use – EMC requirements – Part 1: General
requirements.
Emission: Class B, control and laboratory use.
Immunity: For use in industrial locations.
- EN 61326-1:2013 Electrical equipment for measurement, control and
laboratory use – EMC requirements – Part 1: General requirements.
Emission: Class B, control and laboratory use.
Immunity: For use in industrial locations.
- CISPR 11:2015 Industrial, scientific and medical equipment – Radio-
frequency disturbance characteristics Limits and methods of
measurement.
Emission: Radiated emission up to 1 GHz (SAC).
- EN 55011:2009 +A1:2010 Industrial, scientific and medical
equipment – Radio-frequency disturbance characteristics Limits and
methods of measurement.
Emission: Radiated emission up to 1 GHz (SAC).
LVD Directive By applying:
(2014/35/EU) - IEC/EN 61010-1:2010 Safety requirements for electrical equipment
for measurement, control and laboratory use.
- IEC 61010-2-030:2017 Safety requirements for electrical equipment
for measurement, control, and laboratory use - Part 2-030: Particular
requirements for testing and measuring circuits.
- EN 61010-2-030:2010 Safety requirements for electrical equipment
for measurement, control, and laboratory use - Part 2-030: Particular
requirements for testing and measuring circuits.
- IEC 60529:1989 + A1:1999 + A2:2013 Degrees of protection
provided by enclosures (IP Code).
- EN 60529:1991 + A1:2000 + A2:2013 Degrees of protection
provided by enclosures (IP Code).
RoHS 2 Directive By applying:
(2011/65/EU) - EN 50581:2012 Technical documentation for the assessment of
electrical and electronic products with respect to the restriction of
hazardous substances.

IM 12B06W03-01E-E
6
• Non-Incendive
FM-United States Nonincendive for Class I, Division 2, Groups A, B, C & D Hazardous
(Classified) Location, Indoors/Outdoors with a Temperature code T6/
T5/T4 for -20°C ≤ Ta ≤ +55°C when connected in accordance with
Control Drawing D&E 2019-012-A60.
By applying:
- FM3600: 2018 Electrical Equipment for Use in Hazardous (Classified)
Locations, General Requirements
- FM3611: 2018 Nonincendive Electrical Equipment for Use in Class
I and II, Division 2, and Class III, Divisions 1 and 2, Hazardous
(Classified) Locations
- FM3810: 2018 Electrical and Electronic Test, Measuring and Process
Control Equipment
- UL 121201: 2017 Nonincendive Electrical Equipment for Use in
Class I and II, Division 2, and Class III, Divisions 1 and 2, Hazardous
(Classified) Locations
- ANSI/ISA 61010.1: 2012 Safety requirements for electrical
equipment for measurement, control and laboratory use – Part 1:
General requirements
Certificate no.: FM19US0166X. For Specific conditions of Use refer to section 1-4.
FM-Canada Nonincendive for Class I, Division 2, Groups A, B, C & D Hazardous
(Classified) Location, Indoors/Outdoors with a Temperature code T6/
T5/T4 for -20°C ≤ Ta ≤ +55°C when connected in accordance with
Control Drawing D&E 2019-012-A60.
By applying:
- CSA-C22.2 No. 0.4: R2013 Bonding of Electrical Equipment
CSA-C22.2 No. 213: 2017 Nonincendive Electrical Equipment for
Use in Class I, Division 2, Hazardous Locations
- C 22.2 No. 61010.1: 2012 Safety requirements for electrical
equipment for measurement, control and laboratory use – Part 1:
General requirements
- C22.2 No. 94.2: 2015 Enclosures for Electrical Equipment,
Environmental Considerations
Certificate no.: FM19CA0089X. For Specific conditions of Use refer to section 1-4.
• Compliancy - AS/NZS CISPR 11
- KC Registration of broadcasting and communication equipment
KCC-R-R-YPA-BA11
• Recommendations and guidelines
NAMUR Precompliance checked by applying:
- NAMUR NE21: 2017 Electromagnetic compatibility (EMC) of
industrial process and laboratory.

IM 12B06W03-01E-E
7
1
2
3
4
5
2
1
5
4
3
2-3. External dimensions and pin assignment of connectors
Figure 2. Dimensions BA11 Active Junction Box
WU11 cable pin Male connector Female connectors
description
1 Data–
2 Data+
3 Supply+
4 Shield
5 Supply-
Figure 3. Connection assignment
24
2.52
1.34
34
5.43
1.42
14
1.1
1.42
2
Dimension in
mm [inches]
(BUS IN) (BUS OUT, J1-J4)

IM 12B06W03-01E-E
8
3. Preparation
3-1. Installation
The BA11 Active Junction Box is used to allow multiple Modbus Terminal/Slave units
(e.g. SENCOM SA modules) to a Master/Host unit.
Before use, remove the dust- and protection caps of the applicable connectors.
Figure 4. Example of system configuration
For installation in Class I, Division 2 Hazardous (Classified) Location, refer to Control Drawing
D&E 2019-012-A60
3-2. Mounting options for BA11 Active Junction Box
The BA11 Active Junction Box can be mounted on a wall, pipe or backside of FLXA402
analyzer. Mounting materials can be ordered as option (/UM) or as spare part (K1548PM).
In the mounting instructions explained it is a choice to also mount the NEMA 4X bracket.
3-2-1. Instructions for mounting BA11 on the mounting bracket, with or without
using the NEMA 4X bracket
Fasten BA11-base firmly on the mounting bracket using the two M6 screws supplied with
the option /UM. If applicable, the NEMA 4X bracket has to be mounted too according the
explanation figure 5.
YPA Europe
Made in the Netherlands 3825HD-2
BA11
ACTIVE JUNCTION BOX
BUS SENSOR CONNECTIONS
IN OUT J1 J2 J3 J4
WU11-M9-**-CN-S
Modbus Host
e.g. FLXA-402
WU11-M9-**-WP-S
max. 100m (328ft)
max. 100m
(328ft)

IM 12B06W03-01E-E
9
Figure 5. Bracket mounting
Without NEMA 4X bracketWith NEMA 4X bracket
3-2-2. Instructions for pipe mounting
14.5
15
2
3.23
1.1
3.31
Dimension in
mm [inches]
Figure 6. Pipe mounting
Refer to 3-2-1 for bracket mounting. Fasten the assembled BA11 together with the
bracket on the pipe using M8 U-bolt, 2x M8 washers and two M8 nuts delivered
with /UM mounting set.

IM 12B06W03-01E-E
10
3-2-3. Instructions for wall mounting
Figure 7. Wall mounting
Refer to 3-2-1 for bracket mounting. Fasten the assembled BA11 together with the bracket on
the wall using the set of two 8x50 anchors and 6.3x50 screws delivered with /UM mounting set.
Note: The wall on which BA11 is mounted should be strong enough to bear the weight of
more than 8 kg (17.64 pound).
3-2-4. Instructions for mounting at backside of FLXA402 analyzer
Figure 8. Application mounting
Refer to 3-2-1 for bracket mounting. Fasten the assembled BA11 together with the bracket
on the FLXA402 transmitter (refer to IM document of the exact model of FLXA402 transmitter for
the proper torques at M8 screws).
15
14.5
11
2
1.4
35.5
11
Dimension in
mm [inches]
3.15
11
2
2
Dimension in
mm [inches]

IM 12B06W03-01E-E
11
4. Model code
Model Suffix Code Option code Description
BA11 Active Junction Box
Material -C Aluminium alloy, epoxy coating
Type -AA General purpose
-DD Non Incendive for FM-US / FM-Canada
Connection type -M9 M9 male/female connectors, 5 pins
Options /UM Universal mounting set
5. Spare parts
Spare part Description
K1548DC One set of dust- and protection caps
K1548PM /UM universal mounting set for BA11

IM 12B06W03-01E-E
12
6. Control Drawing
D&E 2019-012-A60
Non-Hazardous Location Class I, Div. 2, GP ABCD, T6/T5/T4
HOST
Power
parameters:
Voc
I/O
Isc Ca
La
NIFW Parameters BA11
Vmax 5.5 V
Specified Voc of the HOST shall not exceed the Vmax of the BA11 or the Vmax of any of the unit loads
Imax 517 mA
Specified Isc of the HOST shall not exceed the Imax of the BA11 or the Imax of any of the unit loads
Ci 1.42μF
Li 0 mH
Sum of L IN, L OUT, L1, L2, L3, L4 ≤250 mtr. All cables must be type WU11 (Ccable = 0.2 nF/mtr., Lcable = 0.1 μH/mtr.)
Notes:
1) No revision to this drawing without prior approval of FM.
2) Installation must be in accordance with the National Electrical Code (ANSI/NFPA 70; CSA C22.1) and relevant local codes.
3) WARNING - EXPLOSION HAZARD. DO NOT OPEN WHILE THE EQUIPMENT IS ENERGIZED OR WHEN AN EXPLOSIVE ATMOSPHERE IS PRESENT.
AVERTISSEMENT - RISQUE D'EXPLOSION. NE PAS OUVRIR LORSQUE L'ÉQUIPMENT EST SOUS TENSION OU EN PRÉSENCE DÚNE ATMOSPH ÈRE EXPLOSIVE
4) WARNING - SUBSTITUTION OFCOMPONENTS MAY IMPAIR SUITABILITY FOR DIVISION 2.
À L'APTITUDE À LA DIVISION 2.
5) Cable connectors must be fully engaged using the positioning notch and mechanical retension.
6) The BA11 connectors and protection caps must be secured with a torque of 0.25 Nm. The lid screws must be secured with a torque of 1.1 Nm.
7) Some equipment identifies interconnection parameters using terminology associated with the Zone classification scheme. In such case, note that the following terms are equivalent:
La
Uo
Io
Co
Lo
Isc Ca
BA11#8
Terminology Division scheme: Terminology Zone scheme:
Voc
HOST parameters
Terminology Division scheme:
Vmax
BA11 / unit load parameters
Ui
Terminology Zone scheme:
Ii
Ci
Li
BA11#1
BA11#2
Imax
Ci
Li
L
2
BUS BUS
IN OUT J1 J2 J3 J4
unit loads
1...4
unit loads
5...8
unit loads
29...32
L L OUT
L1
BUS BUS
IN OUT J1 J2 J3 J4
BUS BUS
IN OUT J1 J2 J3 J4
L
3
L
4
Sum of Ci values for all BA11s and all unit loads connected, plus the sum of all associated cable capacitance shall not exceed the specified Ca value of the HOST
Sum of Li values for all BA11s and all unit loads connected, plus the sum of all associated cable inductance shall not exceed the specified La value of the HOST
AVERTISSEMENT - LA SUBSTITUTION DE COMPOSANTS PEUT NUIRE

IM 12B06W03-01E-E
13

IM 12B06W03-01E-E
Subject to change without notice Printed in The Netherlands, 05-2011
Copyright ©
IM 12X0X0-E-E
Subject to change without notice Printed in The Netherlands, 00-000 (A) I
Copyright ©
Yokogawa has an extensive sales and
distribution network.
Please refer to the European website
(www.yokogawa.com/eu) to contact your
nearest representative.
YOKOGAWA EUROPE BV
Euroweg 2
3825 HD AMERSFOORT
The Netherlands
www.yokogawa.com/eu
YOKOGAWA ELECTRIC CORPORATION
World Headquarters
9-32, Nakacho 2-chome, Musashino-shi
Tokyo 180-8750
Japan
www.yokogawa.com
YOKOGAWA CORPORATION OF AMERICA
2 Dart Road
Newnan GA 30265
USA
www.yokogawa.com/us
YOKOGAWA ELECTRIC ASIA Pte. LTD.
5 Bedok South Road
Singapore 469270
Singapore
www.yokogawa.com/sg
YOKOGAWA CHINA CO. LTD.
3F Tower D Cartelo Crocodile Building
No.568 West Tianshan Road Changing District
Shanghai, China
www.yokogawa.com/cn
YOKOGAWA MIDDLE EAST B.S.C.(c)
P.O. Box 10070, Manama
Building 577, Road 2516, Busaiteen 225
Muharraq, Bahrain
www.yokogawa.com/bh