Year: 2025

Electronic Marshalling eliminates the need to partition the

I/O wiring to specific channels based on signal type. Simply

connect field signal multi-cores in an orderly fashion as

desired. Install the appropriate CHARM to complete the

field circuit and the signal is ready to be used by any one of

four controllers. No cross-wiring required.

Each CHARM acts as a circuit protection device and field

wiring disconnect. Signals are inherently current-limited

to protect against wiring faults to ground. Each CHARM

provides surge protection to meet industry standards in

the area of EMC. Under extreme overvoltage conditions

due to incorrect field wiring, the CHARM will act as a fuse to

protect adjacent channels. Signal faults are thus isolated to

the single CHARM.

Product Description

Electronic Marshalling hardware includes:

• CHARM I/O Carrier (DIN rail-mounted and supports

redundant pair of CHARM I/O Cards, redundant 24

V DC power connectivity, and redundant Ethernet

communication modules).

• CHARM I/O Card (CIOC) provides communication

between CHARMs and the Ethernet I/O network to

M-series, S-series, and PK Controllers. The CIOC has

Achilles Communications Certification Level 1 and the

redesigned CIOC2 has more computing power and

Achilles Communications Certification Level 2. The CIOC2

is a drop-in replacement for the CIOC (v13.3.1 or later

is required).

• CHARM Base plate (DIN rail-mounted with interleaving

power and bus connectors. Supports 12 CHARMs and

their terminal blocks, as well as connection for injected

field power).

• CHARM Terminal Block (removable terminal block

providing terminal connections to field wiring and

physical latch for CHARM).

• CHARMs (Characterization Module for each field signal.

Provides basic analog to digital conversion and signal

isolation to the redundant communication bus).

• Cable Extenders that provide flexibility in

carrier mounting.

• I/O bus termination (provides bus terminations for

redundant I/O bus).

• Labeling features for baseplate and channel identification.

Complete DeltaV solution: Migrate from your legacy system

with the comfort that when complete you will have a complete

DeltaV solution, not a combination of standard and custom

hardware/software to support. Every piece of the migration

panel is standard DeltaV hardware and can be supported with

the same personnel and spare equipment that every other

CHARMs and DeltaV installation uses.

Plug and play I/O: The DeltaV CIOC has been designed for

ease of use, both in physical installation and its software tools.

Components snap together with secure DIN-rail latches and

interlocking carrier connectors. Insert the CHARMs and auto

sense the node to create the I/O definition automatically in

your DeltaV configuration database. CHARMs use a self-keying

system to automatically set a channel for a specific CHARM

type. Users cannot mistakenly insert a CHARM into the wrong

terminal block. Assign all, one, or any number of channels to a

controller with a simple click and drag.

Replaces legacy I/O in place: DeltaV Electronic Marshalling

goes where no one else’s I/O can. Install the CHARMs migration

panel above, below, or even in front of your legacy termination

panel and move your wires inches to complete your migration

to DeltaV. Since the CHARMs migration panel is a standard

CHARMs baseplate, it talks to the CIOC the same as the

standard vertical installation through the cable interface.

This allows you to mount the migration panel in the best

location to facilitate a clean system cutover and not have to

“stretch” your I/O cables to a new termination. As an added

bonus, install CHARMs vertical if your wiring allows for it in

certain areas. Now you can mount your I/O in any orientation

as best fits your current migration layout and needs.

Fully redundant communications: The CIOC architecture is

fully redundant. This starts with the two I/O cards on a carrier.

The carrier has redundant communication modules for primary

and secondary network connections. There are two 24 V DC

input power connections. The carrier connects to the CHARMs

Baseplates and provides redundant power and communication

buses to the CHARMs. Everything is redundant down to the

individual channel.

Benefits

I/O anywhere you need it: The DeltaV CIOC provides

unprecedented flexibility in control system I/O topology.

Now you can mount your DeltaV I/O in the same space as your

legacy I/O for a direct 1-to-1 replacement. Without adding

any new cabinets of DeltaV hardware you can replace all your

legacy equipment leaving behind a complete DeltaV solution.

Single Channel granularity: The CHARM I/O architecture

allows each individual channel to be characterized for the

requirements of the field device. Any instrument signal can be

wired to any terminal block. The channel is then electronically

marshalled by installing the appropriate CHARM and assigning

the channel to one of four controllers. Legacy I/O terminations

are no longer a concern because of multiple channel types

from a single termination panel. Just install the proper CHARM

to characterize the I/O as found on the legacy panels. No more

engineering and splitting signals from a single legacy panel to

multiple DeltaV I/O cards

System Compatibility

M-series, S-series and SZ controllers are all supported on

DeltaV v12.3 and beyond. PK Controllers are supported on

DeltaV v14.3 and beyond. For detailed version compatibility

see the Prerequisites section below.

Redundant controller pairs must be of the same series. For

example, M-series and S-series controllers cannot be connected

together as a redundant pair.

Although an SX controller can operate as a standby controller to an

SQ active controller, it is recommended that both the active and

standby controllers be of the same hardware. The SQ may not have

sufficient memory or CPU capacity to accept the configuration that

runs in an SX controller. This applies for MX and MQ controllers as

well, only mix controller types as a temporary condition during a

hardware upgrade.

The MQ, MX, SQ, SX and PK Controllers are all capable of

redundancy. For more information on these controllers, refer to

the respective controller product data sheet.

SZ Controllers are also capable of redundancy. For more

information on this controller, refer to the DeltaV SIS Electronic

Marshalling or DeltaV SIS IS Electronic Marshalling product data sheets.

Some of the events that can cause a switchover are:

•Hardware failure within the active controller

•Communications failure between the active controller and I/O

•Communications failure on both control network ports of the

active controller

•Removal of the active controller from the carrier

•User request initiated from Diagnostic Explorer

The MQ, MX, SQ, SX and PK Controllers are all capable of

redundancy. For more information on these controllers, refer to

the respective controller product data sheet.

SZ Controllers are also capable of redundancy. For more

information on this controller, refer to the DeltaV SIS Electronic

Marshalling or DeltaV SIS IS Electronic Marshalling product data sheets.

There are no dip-switches, jumpers or addresses to assign. The

standby controller is automatically assigned the appropriate

standby address and begins working, protecting your process.

Bumpless transition. DeltaV controllers are designed for a

bumpless transfer of control from the active controller to the

standby controller. During this time, output channels hold

their output states until the switchover is complete and control

modules begin executing. The control module uses signal status

to ensure all I/O channels are good before taking control action

on them, and all output signals are synchronized through I/O

readback features to ensure control calculations are based on

current output states.

This ensures a bumpless transfer of control during the

switchover when using CHARM or DeltaV Classic I/O cards, with

or without Foundation™ fieldbus devices.

Automatic commissioning. The system automatically detects,

commissions, and downloads a standby controller so you can

safely replace a unit in the field. Redundancy can be added

online by simply installing a new 2-wide backplane with a

system power supply and MQ, MX, SQ, or SX controller on it.

The SZ controller carrier, or the Dual Universal Safety Carrier,

provides 2 slots for SZ controllers, so there is nothing to add

other than the additional SZ controller. The PK controller carrier

also provides 2 slots, so simply add an additional PK controller

to the existing carrier. The engineering database is updated

automatically, simply assign and download the controller

redundancy license to activate the standby controller, all with

no impact to your running process.

Benefits

Uninterrupted control operation. By installing redundant

M-Series, S-Series and PK controllers, you can establish a

“safety net” to protect your process from unexpected controller

failures. The standby controller stands ready to maintain control

and process uptime in the face of hardware failures.

Online Upgrades. Installing redundant DeltaV controllers

enables you to perform online upgrades to your DeltaV system.

New firmware can be installed in the standby controller while

online without affecting operation. Once upgraded, the

standby is automatically configured and becomes available,

allowing a switchover to the new firmware without disrupting

the process. Once the switchover is complete, the original

active controller can then be upgraded. In addition, an MQ

controller can be upgraded online to an MX controller, and an

SQ controller can be upgraded online to an SX controller. This

ensures your system is always ready to expand as your control

strategy grows.