DeltaV™ CTO DCS Smart Junction Box

China CTO DCS SJB PDS

DeltaV - Emerson

DeltaV™ CTO DCS Smart Junction Box

1 oct. 2024 — Fully documented package: Each SJB is supplied with full documentation and engineering drawings showing internal lay-out, bill of materials, and internal wiring ...

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DeltaV Distributed Control System

Product Data Sheet
March 2024

DeltaVTM CTO DCS Smart Junction Box
(NEPSI; CCC; Zone 2, Zone 22 Locations)

DeltaVTM CTO DCS Smart Junction Box (SJB).

 Delivers Electronic Marshalling enabled by CHARacterization Modules (CHARM) technology.
 Reduce system footprint
 Eliminate I/O home run cables
 Significantly reduce SJB design engineering
 Fully documented package

Introduction
The DeltaVTM CTO DCS Smart Junction Boxes provide an off-the-shelf solution for faster project execution and reduced installation costs. SJBs are factory tested products and ready for installation in the field. Electronic Marshalling eliminates traditional I/O design tasks and allows field wiring to start long before control strategies are finalized.
The SJBs are designed for hazardous areas and harsh environments, from extreme temperatures to corrosive gases.

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Benefits
Delivers Electronic Marshalling enabled by CHARMs technology: The SJBs offer the full benefits of Electronic Marshalling. The individual channels can be defined for any combination of field signal type, as required by the process equipment. This allows for 100% utilization of channels, regardless of the I/O signal mix. Late changes are easily accommodated with minimal re-engineering and no rewiring.
Reduce system footprint: Equipment room footprint is greatly reduced by replacing traditional marshalling cabinets with field mounted I/O cards.
Eliminate I/O home run cables: Field instrumentation wiring is reduced to the signal pair that connects the field device to the SJB. Save on home run multi-core cables, cable trays, associated engineering, and documentations.
Significantly reduce SJB design engineering: SJBs are pre-engineered and factory tested. The I/O flexibility allows the same design to serve a wide variety of I/O signals, conditioned individually by the CHARM. Field wiring design is complete at the terminal block.
Fully documented package: Each SJB is supplied with full documentation and engineering drawings showing internal lay-out, bill of materials, and internal wiring. They are designed to meet local building code and industry best practices in order to deliver proven functionality with minimal costs.
Product Description
SJB offering comprises a range of pre-engineered solutions based on industry standard, wall mounting SJBs that are available in AC-powered version with space up to 96 CHARM I/Os.
The designs have considered specific requirements related to outdoor installation in the field, including environmental protection, heat dissipation, power and grounding requirements, and installation in hazardous areas.

All components are prewired and tested at the factory. Simply select the required DeltaV Electronic Marshalling equipment and SJB is ready to install, connect the field wiring, power and network cables. Install needed CHARMs to commission your loops and autosense the hardware into your DeltaV system.
Before delivery, each SJB undergoes a full in-house inspection and test, to assure that it is fully operational before leaving the factory. Electronic Marshalling eliminates the need for custom designs. These SJBs can be ordered, together with the DeltaV Electronic Marshalling equipment and CHARM I/O and delivered directly to site to begin field wiring (Factory Acceptance Test (FAT) with client may be optional).
The SJBs are ordered by selecting a base SJB model and required options to meet specific project needs.
 Base SJB model is available for I/O quantity up to 96 I/O's.
Each base SJB model is further explained in the coming sections.
Configurable options include the type of CHARMS (I.S. or non- IS), network (Fiberoptic or Copper), enclosure Material (SS304/ SS316L), nameplate engraving, injected power, heater, etc.
System Planning
Electronic Marshalling changes the game with respect to control system I/O planning. The field I/O wiring can be designed independently from the control strategy design, allowing E&I engineers to determine the number and type of I/O based on the process design.
 Count the I/O requirements and determine the required quantity of SJBs.
 Determine whether the SJB is required for a safe area or hazardous area installation.
 Plan the power distribution and installation of SJBs.
 Wire the field devices and commission them.
 When control strategies and associated controller hardware is finalized, simply assign the I/O signals to the controllers as needed, no wiring changes. You can change controller I/O assignments with the click of a mouse, without touching a wired connection.

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DeltaV CTO DCS Smart Junction Box (SJB)
All SJBs come with the following equipment installed:
 Power distribution and isolation components for primary and secondary 24V DC Power to CHARM I/O Cards.
 AC power feeds with redundant AC/DC 24V DC bulk power supplies.
 Halogen-Free wire ducts (Blue for IS CHARMs).
 Grounding bars for CG (Chassis Ground) DC Reference Ground and 2 more shield bars.
 Name Plate.
 Removable Gland Plate.
 Breather: Brass Ni plated / SS316L. SJBs are designed for bottom entry for all cables (power, network, and I/O signals).
SJBs are designed for bottom entry for all cables (power, network, and I/O signals). It supports all available low voltage CHARM I/O types with 24V DC bussed field power.
CHARM I/O Cards (CIOC2) and IO CHARMs are not included and are to be ordered separately.

CTO Options
For a particular base SJB model, a number of pre-engineered CTO options can be specified. These options include:
Type of CHARMs: 96 I/O SJB: Using CHARM flexibility functionality user can select up to 96 non-IS CHARMs / 96 IS CHARMs. In case of mix, max. 60 IS and 36 non-IS CHARMs. Mixing of CHARMs in one column is not allowed.
 Enclosure Material: Stainless Steel SS304 or SS316L.
 Stainless steel provides protection for corrosive environments (category NEMA TYPE 4X, IP66). SS316L provides superior corrosive protection and is typically applied in offshore applications (salt resistant).
 24V DC injected power (optional): 12 fused circuits, prewired to all non-IS base plates. (This option includes a redundancy diode to bring primary and secondary power feeds to a common injected power distribution).
 Heaters, for extreme low temperature installations (optional)
 Surge Protection Device: AC Incoming SPD (optional)
 Purging system (optional)
 Door Opening Alarm (optional)
 Temperature Monitoring (optional)
 CIOC communication Network: Ethernet / Fiberoptic
 Warning labels
All CTO options are implemented, tested, and shipped to site as one package, significantly reducing the required upfront design and certification effort.
The following sections provide a more detailed specification for the SJBs and available options.

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Overview of DeltaV CTO DCS Smart Junction Boxes (SJB) ­ Base Models

SJB Base Model Number

Description

CN-FE-96-AC-CIOC-HA

AC Powered Smart Junction Box for 96 CHARM I/Os; NEPSI, CCC, Zone 2,
Zone 22 Locations.

CN-FE-96-AC-CIOC-SA

AC Powered Smart Junction Box for 96 CHARM I/Os; Safe Area Locations.

CN-FE-20-PWRD-DC-HA

AC Powered Smart Junction Box - 20 PDP (Power Distribution Points); NEPSI, CCC,
Zone 2, Zone 22 Locations.

CN-FE-40-PWRD-DC-HA

AC Powered Smart Junction Box - 40 PDP (Power Distribution Points); NEPSI, CCC,
Zone 2, Zone 22 Locations.

No. of CHARM I/Os

Incoming Power Requirements (Pri. and Sec.)

96

220VAC

96

220VAC

-

220VAC

-

220VAC

Permitted Location
Hazardous Area Zone 2;
Zone 22
Safe Area
Hazardous Area Zone 2;
Zone 22 Hazardous Area Zone 2;
Zone 22

Overview of DeltaV CTO DCS Smart Junction Boxes The CTO base model reference for SJB uses the following naming convention: CN-FE-XX-YY-CIOC-ZZ, where: CN = Chinese Design Standards and Regulations FE = Smart Junction Box (SJB) XX = Maximum I/O's count in this CTO model (96) / No. of power distribution connections for power Distribution JB (20/40) YY = Incoming Power, AC: 220V AC CIOC = Short description of content and purpose PWRD = Power Distribution ZZ = SA: for use in Safe Area, HA: for use in Hazardous Area (Zone 2, Zone 22)

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Overview of DCS SJB Base Models and Options

LEGENDS:
· - Default option setting

 - Configure to option setting (Different from Default)

SJB Base Model

NA - Option setting not possible for SJB Base Model
SJB Options

Option Selection

1 -20°C To +50°C

NA

Ambient Temperature

A 2 -40°C To +50°C

NA

3 -20°C or -40°C To +55°C

NA

Enclosure Material

1 Stainless Steel SS304 B

·

2 Stainless Steel SS316L



Purging System

1 No C

·

2 Yes



1 No

·

Heaters***

D 2 Single Heater



3 Two Heaters



AC Power Surge Protection Device

1 No E

·

2 Yes



24VDC injected power (Applicable for non-IS CHARM

1 No F

·

Baseplates only)

2 Yes (12 Circuits + Diode)

NA

SPD for Field IOs*

1 No G

·

2 Yes



Door Opening Alarm

1 No H

·

2 Yes



Temperature Monitoring Alarm

1 No I

·

2 Yes



CIOC Network

1 Single-mode Fiber Optic w / Splice Cassettes

·

J 2 Multimode Fiber Optic w / Splice Cassettes



3 Copper Ethernet



1 Up to 96 I/O non-IS

·

I/O Type Selection**

K 2 Up to 96 I/O IS



Warning Label Language

3 Mix up to 60 I/O (IS) and 36 I/O (non-IS)



L 1 Standard Label (English - Chinese)

·

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CN-FE-96-AC-CIOC-HA CN-FE-96-AC-CIOC-SA CN-FE-20-PWRD-DC-HA CN-FE-40-PWRD-DC-HA

Option Setting

··







NA

··





··





··







NA

·

NA



·

·

NA



NA

·

NA



NA

··





··





·

NA



NA



NA

·

NA



NA



NA

··

·

NA
·

·

·

NA NA
·
NA NA NA NA
·

·

NA NA NA NA NA NA
·
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*SPD for Field IOs 1. This option selection provides space provision for installing Field I/O SPDs inside SJB. 2. Selecting this option "Yes" will restrict installable CHARM Baseplate qty. in SJB to max. 4 IS / 4 Non-IS CHARM Baseplates. 3. I/O SPDs need to be ordered separately as per project requirement.
**I/O Type Selection 1. Selection of required CHARM Baseplate qty is possible. Selection will be limited to max. installation possible in the SJB model. 2. Selection of minimum 1 IS/ Non-IS baseplate is mandatory for installing CHARMs required for SJB diagnostic alarms wiring. 3. Mixing of IS and non-IS CHARMs is not possible in same column. Selected non-IS and IS CHARM Baseplate qty will be allocated to separate columns using extenders. 4. IS / non-IS DI CHARM selection for alarms (Low side DI for power failure alarm, NAMUR CHARM for Door opening alarm (if selected) and a RTD CHARM for temperature monitoring alarm (if selected) will be done based on type of CHARM Baseplates selected. In case of all non-IS CHARM Baseplates or IS/non-IS mix CHARM baseplate selection, non-IS type CHARMs will be selected. When all IS CHARM Baseplates are selected, IS CHARMS will be selected for alarm connection. Total installable CHARMs qty. in SJB will be reduced as per no. of alarms selected. 5. Non-IS CHARM Baseplate selection with other types of CHARM Terminal blocks combination is possible. 6. System validations are applied to avoid invalid selections by user.
***Heaters Selection of heater will be possible only for ambient temperature range -40°C To +50°C.

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General Specifications for SJBs

General Specifications for 96IO SJB

Enclosure Material
Dimensions Access Protection Category Cable Entry Door Opening Alarm (Optional) Temperature Monitoring (Optional) Purging System (Optional)
SPD for Field I/O (Optional)
Name Plate Weight

Stainless Steel SS304 / SS316L, Enclosure Thickness 2mm, Mounting plate Thickness 2.5mm 915mm (W) x 1220mm (H) x 475mm (D)
Single door (Thickness 2mm), left hand hinged
IP 66 ­ NEMA TYPE 4X (Corrosive Environment)
Bottom, Single gland plate (Thickness 3mm)
With inductive sensor and NAMUR CHARM
With PT 100 sensor and RTD CHARM
Patent certification No. for the Ex e enclosure with purge system is 11892045 On selection it will provide space for adding I/O SPDs for field I/O by removing 4 CHARM Baseplates Outside Door: Laser engraved plastic
~175 kg

Power Requirements ­ Internal Power Distribution
24VDC for injected power (Optional) Control Network

Primary and secondary 220 VAC power supply supplied from outside SJB. 220 VAC distribution through power terminals, and circuit breakers. 24 VDC bulk power supplies: 2 x 20A (for +50°C ambient) and 2 x 10A (for +55°C ambient) with full redundant (Primary and Secondary) 24 VDC distribution.
Through 40A Redundancy module; Applicable for non-IS CHARM Baseplates only
Options available for Control Network: 1. Redundant Single Mode FO with Media Converter 2. Redundant Multi-Mode FO with Media Converter 3. Redundant Copper (RJ45)

Other

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-LC FO patch cables, Multimode 50/125-micron core/ cladding diameters (OM2) or Single mode 9/125-micron cable
The SJB includes: Mounting plate, Halogen-Free wire ducts, external wall mounting brackets, door clamps, ground bars, external grounding bolt, breather-drain.

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General Specifications for Power Distribution JB

Enclosure Material

Stainless Steel SS304 / SS316L, Enclosure Thickness 2mm, Mounting plate Thickness 2.5mm

Dimensions Access

20 PWRD ­ 741mm (W) x 651mm (H) x 325mm (D) 40 PWRD ­ 800mm (W) x 850mm (H) x 325mm (D) Single door (Thickness 2mm), left hand hinged

Protection Category

IP 66 ­ NEMA TYPE 4X (Corrosive Environment)

Cable Entry

Bottom, Single gland plate (Thickness 3mm)

Door Opening Alarm (Optional)

With inductive sensor and NAMUR CHARM

Temperature Monitoring (Optional)

With PT 100 sensor and RTD CHARM

Purging System (Optional) Name Plate

Patent certification No. for the Ex e enclosure with purge system is 11892045
Outside Door: Laser engraved plastic

Weight Power Requirements ­ Internal Power Distribution
Other

20 PWRD ~ 50 kg 40 PWRD ~ 60 kg
Primary and secondary 220 VAC power supply supplied from outside JB. 220 VAC distribution through power terminals, and circuit breakers. 24 VDC bulk power supplies: 2 x 20A (for 40 PWRD JB) and 2 x 10A (for 20 PWRD JB) with full redundant (Primary and Secondary) 24 VDC distribution.
The JB includes: Mounting plate, Halogen-Free wire ducts, external wall mounting brackets, door clamps, ground bars, external grounding bolt, breather-drain.

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SJB General Arrangements
Outer General arrangement for 96IO SJB

March 2024

915mm (W) x 1220mm (H) x 475mm (D) Outer General arrangement for 20 PWRD JB

741mm (W) x 651mm (H) x 325mm (D)

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Outer General arrangement for 40 PWRD JB

March 2024

800mm (W) x 850mm (H) x 325mm (D)

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Internal General Arrangement

CN-FE-96-AC-CIOC-HA
This SJB has possible options for system hardware assembly as below:
 1 x CHARM I/O Carrier with redundant Copper Ethernet connectors
 Max. 8 nos. of Non-IS and IS CHARM Base Plates as per user selection

CN-FE-96-AC-CIOC-SA
This SJB has possible options for system hardware assembly as below:
 1 x CHARM I/O Carrier with redundant Copper Ethernet connectors
 Max. 8 Nos. of Non-IS and IS CHARM Base Plates as per user selection.

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CN-FE-20-PWRD-DC-HA This JB has 20 nos. external 24VDC power distribution points.

CN-FE-40-PWRD-DC-HA
This JB has 40 nos. external power 24VDC distribution points.

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Design Considerations

Environmental Specifications
The CTO DCS SJBs are certified for an ambient temperature range of -20°C to +55°C and -40°C to +55°C. With heater option negative temperature range can be extended to -40°C. Optional heater selection will be possible only for temperature range -40°C to +50°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 humidity specification for the SJB is 5-95% relative humidity, non-condensing. SJBs are verified for typical heat load, to cover most used cases.

The table below specifies the impact of CTO configurable options on the heat dissipation within SJBs: assuming wall mount installation (back side not used for heat dissipation), installation in shaded area (no direct sunlight) and an internal heat dissipation not greater than the value specified in the column "Maximum allowed heat dissipation inside the SJB. It is advised to calculate the heat dissipation for each individual SJB with the actual quantity and mix of CHARM types. In high ambient temperatures the installable CHARMs capacity of the SJB may have to be reduced depending on the type of CHARM types.

Heat Load Calculations for SJB for 50°C Ambient

CTO SJB Model

Maximum allowed heat dissipation
for 50°C Ambient

User Configurable Heat contributing options

A

B

C

CIOC Network

Inj. Power

Power Supply

FO

NO

20 Amp

CN-FE-96-AC-CIOC-HA CN-FE-96-AC-CIOC-SA

145

FO

YES

COPPER

NO

20 Amp 20 Amp

COPPER

YES

20 Amp

Total Dissipation
(A+B+C)

CIOC2 Heat
Dissipation (W)

Maximum allowable heat load for CHARM
HW

43

94

50

87

8

38

99

46

91

For 55°C ambient selection, Power supply capacity in SJB will be limited to 10 Amp. It is advised to calculate the heat dissipation for each individual SJB with the actual quantity and mix of CHARM types as per below table.

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Heat Load Calculations for SJB for 55°C Ambient

CTO SJB Model

Maximum allowed heat dissipation
for 55°C Ambient

User Configurable Heat contributing options

A

B

C

CIOC Network

Inj. Power

Power Supply

FO

NO

10 Amp

CN-FE-96-AC-CIOC-HA

70

CN-FE-96-AC-CIOC-SA

FO

YES

COPPER

NO

10 Amp 10 Amp

COPPER

YES

10 Amp

Total Dissipation
(A+B+C)

CIOC2 Heat Dissipation
(W)

Maximum allowable heat load for CHARM
HW

29

33

36

26

8

24

38

32

30

SJB Location
The ambient temperature specification provided assumes the SJB is not exposed to direct sunlight. It is recommended to mount the SJB in a permanently shaded area.
System Compatibility
SJBs are compatible with DeltaV v11.3.1 and above. CHARM I/O cards require S-series Controllers. Assigning CHARMs to MQ, MX, and PK controllers is supported in DeltaV v14.3 and later.
Certifications
SJBs are designed with components that meets or exceeds the following certifications. Depending on the SJB type (see specs):  CCC CERTIFICATE NO.: 2020322303001234  NEPSI Certifications for DCS CHARMs SJB
z Ex db ec ic nC IIC T4 Gc (with non-I.S. CHARMs) z Ex tc IIIC T115°C Dc (with non-I.S. CHARMs) z Ex db ec nC [ic] IIC T4 Gc (with I.S. [Ex ic] CHARMs) z Ex tc [ic] IIIC T115°C Dc (with I.S. [Ex ic] CHARMs)

z Ex db ec nC [ic] [ia Ga] IIC T4 Gc (with I.S. [Ex ia Ga] & [Ex ic] CHARMs)
z Ex tc [ic] [ia Da] IIIC T115°C Dc (with I.S. [Ex ia Ga] & [Ex ic] CHARMs)
z Ex db ec ia nC [ic] IIC T4 Gc (with I.S. [Ex ic] CHARMs and surge protection device)
z Ex tc [ic] IIIC T115°C Dc (with I.S. [Ex ic] CHARMs and surge protection device)
z Ex db ec ia nC [ic] [ia Ga] IIC T4 Gc (with I.S. [Ex ia Ga] & [Ex ic] CHARMs and surge protection device)
z Ex tc [ic] [ia Da] IIIC T115°C Dc
 NEPSI Certifications for PWRD JB
z Ex db ec nC IIC T4 Gc
z Ex db ec nC ic IIC T4 Gc (with RTD & Inductive Sensor)
z Ex tc IIIC T115°C Dc
Refer to the DeltaV S-series Electronic Marshalling or to the DeltaV S-series IS Electronic Marshalling Product Data Sheet for certification information on the DeltaV DCS CHARM system components.

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Ordering Process

Project Customizations

SJBs are pre-engineered solutions developed by Emerson's Project Management Office (PMO) and made available from Emerson Supply Chain.
Basically, the following steps are followed to obtain the SJB:
1. Specify the SJB by selecting the base model and the options required for the project. A Configuration tool is available to aid in the selection of the right combination of options for your CTO SJB.
2. Generate the specification sheet from the configuration tool and send this to your world area contact.
3. Based on the option selection, you will receive a quotation for fully assembled SJB.
4. From CCT, user will be able to download drawing package with default options only. For non-default option selections, share the specification sheet with respective iCenter to receive the drawing as per selected options.
5. Approve the drawing package for construction.
6. Order the SJB as per provided quotation and approved drawings.
7. The SJB is assembled, factory tested and delivered to site. The delivery includes the as-built drawing package (AutoCAD).
For questions related to specific project quotations or order processing, please contact your local Emerson Sales office or your regional Emerson assembly center:
For China iCenter (Shanghai): iCenter.SH@Emerson.com

"...What if the SJB is 90% what I need, but I really need my SJB to have..."
For any customizations as a variation or addition to the standard CTO offering can often be developed in such a way that the additional effort is incremental.
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 assembly center to evaluate any impacts of requested customizations to cost, delivery time and certifications.
Related Products
Below listed are the required products in design and are to be ordered separately.
 CHARM I/O Cards (CIOC2)
 Individual I/O CHARMs (except for alarms)

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The Emerson logo is a trademark and service mark of Emerson Electric Co. The DeltaV logo is a mark of one of the Emerson family of companies. All other marks are the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while diligent efforts were made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and conditions, which are available on request. We reserve the right to modify or improve the designs or specifications of our products at any time without notice.


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