DeltaV SIS Process Safety System Product Data Sheet

February 2025

DeltaV SIS™ CTO Smart Junction Box

(CE; ATEX; IECEx, Safe Area and Zone 2 Locations)

Configure to Order (CTO) CHARM Smart Junction Boxes.

„ Delivers Electronic Marshalling Introduction

enabled by CHARacterization Modules
(CHARM) technology The DeltaV SIS™ CTO Smart Junction Boxes provides an
off‑the‑shelf solution for faster project execution and
„ Reduce system footprint reduced installation costs.

„ Eliminate I/O home run cables SJBs are factory tested products and ready for installation
in the field. Electronic Marshalling eliminates traditional
„ Significantly reduce SJB design engineering I/O design tasks and allows field wiring to start long before
control strategies are finalized.
„ Fully documented package
The SJBs are designed for safe or hazardous areas and
harsh environments, from extreme temperatures to
corrosive gases.
DeltaV SIS CTO Smart Junction Box February 2025

Benefits Before delivery, each SJB undergoes a full in-house

inspection and test, to assure that it is fully operational
Delivers Electronic Marshalling Enabled by CHARMs before leaving the factory. Electronic Marshalling eliminates
Technology: The SJBs offer the full benefits of Electronic the need for custom designs. These SJBs can be ordered
Marshalling. The individual channels can be defined for together with the DeltaV SIS Electronic Marshalling
any combination of field signal type, as required by the equipment and LS CHARM I/Os and delivered directly to site
process equipment. This allows for 100% utilization of to begin field wiring. (Factory Acceptance Test [FAT] may
channels, regardless of the I/O signal mix. Late changes be optional).
are easily accommodated with minimal re-engineering and
The SJBs are ordered by selecting a base SJB model and
no rewiring.
required options to meet specific project needs.
Reduce System Footprint: Equipment room footprint
A range of base enclosure models are available:
is greatly reduced by replacing traditional marshalling
cabinets with field mounted I/O cards. „ I/O quantities: Up to 96 I/O’s.

Eliminate I/O Home Run Cables: Field instrumentation „ For different environmental requirements:
wiring is reduced to the signal pair that connects the field Safe Area or Hazardous Area.
device to the SJB. Save on home run multi-core cables, cable „ European electrical codes/regulations.
trays, associated engineering, and documentations.
Each base model is further explained in the
Significantly Reduce SJB Design Engineering: coming sections.
The SJBs are pre-engineered, and factory tested. The I/O
flexibility allows the same design to serve a wide variety of Configurable options include the type of LS CHARMS
I/O signals, conditioned individually by the CHARM. Field (I.S. or non I.S.), network (Fiberoptic or Copper), enclosure
wiring design is complete at the terminal block. Material (SS304/SS316), cable entry, nameplate engraving,
injected power, heater, etc.
Fully Documented Package: Each SJB is supplied with
full documentation and engineering drawings showing
System Planning
internal lay-out, bill of materials, and internal wiring. They
are designed to meet local building code and industry Electronic Marshalling changes the game with respect to
best practices in order to deliver proven functionality with safety system I/O planning. The field I/O wiring can be
minimal costs. designed independently from the safety strategy design,
allowing engineers to determine the number and type of

Product Description I/O based on the safety logic.

„ Count the I/O requirements and determine the number

SJB offering comprises a range of pre-engineered solutions of SJBs you need.
based on industry standard, wall mounting enclosures that
are available in AC-powered version with space for 96 Logic „ Determine whether the SJB is for a safe area or
Solver (LS) CHARM I/Os depending on the model chosen. hazardous area.

The designs have considered specific requirements related „ Plan the power distribution and install the enclosures.
to outdoor installation in the field, including environmental „ Wire the field devices and commission them.
protection, heat dissipation, power and grounding
When control strategies and associated controller
requirements, and installation in hazardous areas.
„
hardware is finalized, simply assign the I/O signals to
All components are prewired and tested at the factory. the controllers as needed, no wiring changes. You can
Simply select the required DeltaV SIS Electronic Marshalling change controller I/O assignments with the click of a
equipment and the enclosure is ready to install, connect mouse, without touching a wired connection.
the field wiring, power, and network cables. Install needed
LS CHARMs to commission your loops and autosense the
hardware into your DeltaV SIS system.

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DeltaV SIS CTO Smart Junction Box February 2025

DeltaV CTO SIS Smart Junction Box (SJB) Enclosure Material: Stainless Steel SS304 or SS316L.
Stainless steel provides protection for corrosive
All LS CHARM SJBs come with the following
environments (category NEMA 4X). SS316L provides
equipment installed:
superior corrosive protection and is typically applied in
„ AC power feeds with redundant AC/DC 24V DC bulk offshore applications (salt resistant).
power supplies. „ Pre-drilled bottom entry with cable glands for I/O, power,
„ Power distribution and isolation components for primary communications, and grounding cables.
and secondary 24V DC Power to LS CHARM I/O Cards. „ With standard drill pattern (with stop plugs) or cable
„ Halogen-Free Cable ducts. transit system with flexible cable gland blocks that are
installed in a cable entry frame.
„ Grounding bars for CG (Chassis Ground) and
DC Reference Ground. „ Name plate engraved with custom supplied cabinet
identification information.
„ Name Plate.
24V DC Power Distribution for Injected Power or
„ Removable Gland Plate (3mm thick).
4-wire Transmitter Power: 8 fused circuits, pre-wired to
SJBs designed for bottom entry for all cables all Non-IS base plates. (This option includes a redundancy
(power, network, and I/O signals). diode to bring primary and secondary power feeds to a
common injected power distribution).
The CTO CHARM SJBs support all available low voltage
CHARM I/O types with 24V DC bussed field power and all „ Heaters for extreme low temperature installations &
available CHARM terminal blocks. condensation management

CSLS I/O Cards, and LS CHARMs are not included and are „ Blue marking for Field Cable ducts for IS signals
to be ordered separately.
„ Breather: SS316L

CTO Options „ CSLS Network: Fiber Optic / Copper

„ Warning label languages other than standard English,

For a particular base SJB model, several pre-engineered
French, Spanish, and German.
CTO options can be specified. These options include:
All CTO options are implemented, tested, and shipped to
No. of Non-IS Baseplates – Can be selected from 0 to 8
site as one package, significantly reducing the required
„

„ Type of Non-IS Baseplate assembly – Can be selected upfront design and certification effort.
with 4 different types of CHARM terminals
The following sections provide a more detailed specification
„ No. of IS Baseplates – Can be selected from 0 to 8 for the SJBs and available options.

„ CHARMS IO Gateway Assembly – can be selected from

2 different types of Networking topologies

„ Non-IS and IS baseplates installation possible in

single column

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DeltaV SIS CTO Smart Junction Box February 2025

Overview of DeltaV CTO SIS Smart Junction Boxes (SJB) – Base Models
Power Permitted
No. of LS
CTO Base Model No. Description Requirements Location /
CHARM I/Os
(Prim and Sec) World Area

AC Powered Smart Junction Box Hazardous Area

220 to 240V AC /
EU-FE-96-AC-CSLS-HA up to 96 LS CHARM I/O; CE; Up to 96 ATEX/IECEx;
100 to 120V AC
ATEX/IECEx; Zone 2 Locations Zone 2
AC Powered Smart Junction Box
Safe Area
EU-FE-96-AC-CSLS-SA up to 96 LS CHARM I/O; CE; Up to 96 220 to 240V AC
CE
Safe Area Locations

The CTO CSLS base model reference for Smart Junction Boxes uses the following naming convention: EU-FE-96-XX-CSLS-ZZ, where:
EU = Europe Design Standards and Regulations
FE = Field Enclosure (Smart Junction Box)
96 = Maximum I/O’s count in this CTO model
XX = Incoming Power, AC: 220 to 240V AC / 100 to 120V AC
CSLS = CHARM Smart Logic Solver
ZZ = SA: for use in Safe Area, HA: for use in Hazardous Area (ATEX/IECEx, Zone 2)

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DeltaV SIS CTO Smart Junction Box February 2025

Overview of SJB Base Models and Options

LEGENDS:

EU-FE-96-AC-CSLS-HA

EU-FE-96-AC-CSLS-SA
 Default option setting
o Configure to option setting SJB Base Model
(Different from Default)
NA Option setting not possible
for SJB Base Model

SJB Options SJB Options Setting

Certification A 1 ATEX/IECEx  NA

1 -20°C to +50°C  NA

Ambient Temperature B 2 -40°C to +50°C o 

3 -20°C to +55°C o o

1 Stainless Steel SS304  

Enclosure Material C
2 Stainless Steel SS316L o o

1 Undrilled Gland Plate  o

Cable Entry D 2 Pre-drilled gland plate with installed cable glands o 

3 Pre-filled Roxtec Frame o o

1 220 to 240V AC  
Input Voltage E
2 100 to 120V AC o NA

1 Feedthrough Terminals  
Incoming Power Landing F
2 Disconnect Switches o NA

1 Eaton 1
 NA
MCB Make G
2 Appleton o

1 No  
Heaters H 2 Single Heater (for condensation) o o

3 Two Heaters7 o NA

AC Power Surge Protection Device I 1 Yes  

24VDC Injected Power 1 8 Circuits  

J
(Applicable only for Non-IS baseplates) 2 No o o

1 No  
Enclosure Light K
2 Yes 2 o o

1 No  
Enclosure Fan L
2 Yes 8 o o

External 12 LS CHARM I/O Junction 1 No  

M
BOX 24VDC Supply 2 Yes o o

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DeltaV SIS CTO Smart Junction Box February 2025

LEGENDS:

EU-FE-96-AC-CSLS-HA

EU-FE-96-AC-CSLS-SA
 Default option setting
o Configure to option setting SJB Base Model
(Different from Default)
NA Option setting not possible
for SJB Base Model

SJB Options SJB Options Setting

1 Single-mode Fiber Optic w/ Splice Cassettes  

2 Multimode Fiber Optic w/ Splice Cassettes o o

CSLS Network N 3 Single-mode Fiber Optic w/ Adapter o o

4 Multimode Fiber Optic w/ Adapter o o

5 Copper Ethernet o o

1 No3  NA
Door Opening Alarm O
2 Yes o 
1 No  
CHARMS I/O Gateway Assembly P
2 Yes o o

Redundant LS CHARM I/O Gateway

1  
Type of CHARMS I/O Assembly for Ring Topology
Q
Gateway Assembly Redundant LS CHARM I/O Gateway
2 o o
Assembly for Star Topology
I/O Type Selection4 R 1 Up to 96 I/O – Non-IS, IS or Mix  
1 With Standard CHARM Terminal Blocks  
With 3-wire DI Fused Injected Power CHARM
2 o o
Terminal Blocks
Type of Non-IS Baseplates Assembly S
3 With Fused Injected Power CHARM Terminal Blocks o o

With 3-wire AI Fused Injected Field Power CHARM

4 o o
Terminal Blocks
1 STANDARD LABEL (ENG+FRN+GER+SPN)  
Warning Labels Languages T 2 ENG+FRN+GER+USER SPECIFIC LANGUAGE o NA

3 ENG+FRN+SPN+USER SPECIFIC LANGUAGE o NA

1. Eaton MCB is rated for -20°C at lower side, hence it is disabled for selection for ambient temperature range of -40°C to +50°C.
2. For ATEX/IECEx certified SJB, when ”Enclosure Light” option is selected, it will be provided with “Door Switch”. Light will be operated through the door switch.
3. Door Opening Alarm will be available by default for ATEX/IECEx certified SJB, when “Enclosure Light” option is selected.
4. Selection of required CHARM Baseplate (CBP) quantity and type is possible. The Max. CBP quantity is dependent on:
ƒ Ambient Temperature selection
ƒ 24VDC for injected power or 4-wire transmitters
ƒ External 12 LS CHARM I/O Junction BOX 24VDC Supply (Consumes space for 2 CBP)
ƒ CHARMS I/O Gateway Assembly (Consumes space for 1 CBP)
5. Min. 1 CBP (IS / Non-IS) selection is mandatory for connecting SJB alarms to the CHARMs on 1st CBP.
6. In case of all Non-IS CBP or IS/Non-IS mix CBP selection, Non-IS type CHARMs will be selected for alarm connection. When all IS CBPs are selected,
IS CHARMs will be selected for alarm connection. Total installable CHARMs qty. in SJB will be reduced by 2 as 2 CHARMs are required for alarm connection of
that SJB.
7. Two heater option is applicable for ambient temperature range of -20°C to 50°C and -40°C to 50°C only.
8. Enclosure fan option is default “Yes” for ambient selection of “-20°C to +55°C”.

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DeltaV SIS CTO Smart Junction Box February 2025

General Specifications for SJBs

General Specifications for CTO CHARM SJBs

Material (*) Stainless Steel SS304/SS316L, Enclosure Thickness 2mm

Dimensions 915mm (W) x 1220mm (H) x 475mm (D)
(without lifting pads and mounting brackets)
Access Single door (Thickness 2mm), left hand hinged

Protection Category IP 66** –Type 4X (Corrosive Environment)

Cable Entry (*) Bottom, Single gland plate (Thickness 3mm)

Name Plate Outside Door: Laser engraved plastic

Weight ~165 kg (may vary as per hardware added by option selection)

Control Network (*) Options available for Control Network:
Fiber Optic Control Network Includes:
„ FO to Copper Media Converter (MM or SM as per type of FO selected).
Media converter has one 100 BASE-FX (SM/MM) port with LC Connector.
„ SC Splice cassettes (MM or SM as per type of FO selected).
„ SC-LC FO patch cables, Multimode 50/125-micron core / cladding diameters (OM2)
or Single mode 9/125-micron cable.
Power Requirements – Primary and secondary AC power supply supplied from outside
Internal Power Distribution the Smart Junction Box.
Redundant AC power distribution through power terminals,
and circuit breakers.
24 VDC bulk power supplies full redundant (Primary and Secondary):
„ 2 x 20A for 50°C ambient selection
„ 2 x 10A for 50/55°C ambient selection
Diagnostic Alarm „ Bulk Power supplies failure alarm and door open alarm (if selected), connected
in series
„ High temperature alarm
Provision of Power distribution Input power required by external 12 LS CHARM I/O Junction boxes
for external 12 LS CHARM I/O (24VDC +/- 10%) is supplied from Smart Junction Box.
Junction boxes This can be:
„ Redundant (Redundant pair of power cable from SJB to individual external 12 LS
CHARM I/O BOX junction Box).
„ Maximum power cable distance from Smart Junction Box to 12 LS CHARM I/O
Junction box is 100mtr. Maximum power cable termination possible in 12 LS CHARM
I/O Junction box is 2.5mm2 (14AWG).
„ User should daisy chain Pri. and Sec. input power terminals of 12 LS CHARM I/O
Junction box to avoid alarm for non-redundancy power in case of Simplex power
is considered.

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DeltaV SIS CTO Smart Junction Box February 2025

General Specifications for CTO CHARM SJBs

CHARM Baseplate Flexibility „ The selection is available for Non-IS CHARM Baseplates with 4 different types of
CHARM Terminals blocks.
„ Even is case of 55°C ambient temperature Injected power to the CHARM Baseplate
option is available with the restriction on no. of Non-IS CHARM baseplates.
„ Mix of Non-IS and IS CHARM Baseplates in a same column is possible.
(Non-IS CHARM Baseplates followed by IS CHARM Baseplates)
CHARMS I/O Gateway Assembly The selection is available for LS CHARM I/O Gateway Assembly with 2 different types of
networking topologies (Star / Ring).
Supply Includes Mounting plate, Halogen-Free wire ducts, external wall mounting brackets,
door clamps, ground bars, external grounding bolt, drip edge, breather-drain.

(*) For available configurable options refer to respective base SJB model & option table.
(**) IP64 – with wing knob for padlock.

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SJB General Arrangements

96 I/O SJB Outer General Arrangement

915mm (W) x 1220mm (H) x 475mm (D) (without lifting pads and mounting brackets)

96 I/O SJB Internal General Arrangements

EU-FE-96-AC-CSLS-HA
OR
EU-FE-96-AC-CSLS-SA
This SJB has possible options for system
Hardware assembly as below:
„ 1 x CSLS Carrier with redundant Copper
Ethernet connectors
„ Max. 8 No. of Non-IS and IS CHARM Base
Plate as per user selection
„ 1 X CHARMS I/O Gateway Assembly
„ 24VDC Redundant Power distribution
for up to 7 External 12 LS CHARM
I/O Junction boxes

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DeltaV SIS CTO Smart Junction Box February 2025

Design Considerations

Power and Heat

The rated ambient temperature for each SJB model is listed in the table of Overview of SJB Base models and options.
The maximum internal operating temperature for each SJB model is listed in the table below.

CTO SJB Model Maximum Internal Operating Temperature

EU-FE-96-AC-CSLS-HA
60°C*
EU-FE-96-AC-CSLS-SA

*Bulk Power supply will derate after 60°C.

Caution: Operating any electronics at the higher end of its temperature range for long periods of time will shorten its
expected lifetime, see Effects of Heat and Airflow Inside an Enclosure White Paper for more information.

The CTO SJBs are configurable. The type of hardware configured and IO quantity which can be accommodated depends on
ambient temperature and acceptable internal temperature rise within SJB.

For each SJB, a heat and power calculation must be done to assess whether internal temperature rise is acceptable for the
IO quantity considered and configured options considered. Appropriate safety margin may be kept. A CTO Heat and Power
calculation Template is available to assist this.

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DeltaV SIS CTO Smart Junction Box February 2025

SJB Location Ordering Process

Direct sunlight significantly impacts heat rise within the CTO CHARM SJBs are available for ordering via
SJB. It is must to install the SJBs in a permanent shade to Emerson iCenters.
prevent them from being exposed to direct sunlight.
Basically, the following steps are followed to obtain the
CTO CHARM SJB:
Humidity
1. Specify the CTO CHARM SJB by selecting the base model
SJBs are suitable for installation in environment with 5-95% and the options required for the project.
relative humidity, Non-condensing.
A Configuration tool is available to aid in the selection of
the right combination of options for your CTO SJB.
System Compatibility 2. Generate the specification sheet from the Cabinet
SJB are compatible with v12.3 DeltaV SIS or later CSLS cards configuration tool (CCT) and send this to your
require DeltaV SZ Controllers. regional iCenter.

3. Based on the specification, you will then receive:

Certifications „ A quotation for the fully assembled SJB.
CTO CHARM SJBs are designed with components that meet „ The detailed specification (drawing package) matching
or exceed the following certifications. Depending on the your configuration, including the Bill of Materials.
enclosure type (see specs):
4. Approve the drawing package for construction.
„ CE
5. Order the CTO CHARM SJB as per provided quotation and
z EN 61326-1, EN 61010-1 approved drawings.
„ ATEX: Sira 16ATEX4047X 6. The SJB is assembled, factory tested and delivered
z EN 60079-0, EN 60079-1, EN 60079-7, EN 60079-11, to site. The delivery includes the as-built drawing
EN 60079-15, EN 60079-28 package (AutoCAD).

„ ATEX/IECEx Marking For questions related to specific project quotations or order

processing, please contact your local Emerson Sales office
z Ex II 3(3) G/ Ex db ec ic [ic] nC op is IIC T4 Gc with or your regional Emerson iCenter:
NON-IS CHARMS
For Europe (iCenter Cluj):
z Ex II 3(1) G/ Ex db ec [ia Ga] ic nC op is IIC T4 Gc with Cabinets.Quotes@Emerson.com
IS CHARMS
For Middle East, Africa, and Asia Pacific (iCenter Nashik):
„ IECEx: SIR 16.0019X rfqicenter.nsk@Emerson.com
z IEC 60079-0, IEC 60079-1, IEC 60079-7, IEC 60079-11,
IEC 60079-15, IEC 60079-28

Refer to the DeltaV SIS with Electronic Marshalling or

to the DeltaV SIS with IS Electronic MarshallingProduct
Data Sheet for certification information on the DeltaV
system components.

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DeltaV SIS CTO Smart Junction Box February 2025

Project Customizations Related Products

“…What if a SJB is 90% what I need, but I really need „ CSLS Cards must be ordered separately.
my SJB to have…”
„ Individual LS I/O CHARM modules must be ordered
For any customizations as a variation or addition to the separately as per project requirement. The cost
standard CTO offering can often be developed in such a of installation and testing of CHARM modules is
way that the additional effort is incremental. not included.

In case your project would require a customer witnessed

FAT, this can also be accommodated.

Please work with your local Emerson Sales office or regional

Emerson iCenter to evaluate any impacts of requested
customizations to cost, delivery time and certifications.

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diligent efforts were made to ensure their accuracy, they are not to be construed as
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herein or their use or applicability. All sales are governed by our terms and conditions,
Contact Us which are available on request. We reserve the right to modify or improve the designs or
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