Category: Eaton

Crouse-Hinds series MTL fieldbus barriers provide intrinsically safe spur

connections from a high-energy trunk, enabling reliable connection to

certified Foundation™ fieldbus H1 instruments.

These fieldbus barriers are engineered for hazardous areas, ensuring

safety and performance in process automation environments.

Our intrinsically safe fieldbus barriers are available in a variety of

configurations and materials, maximizing application flexibility for industrial

control systems.

• 9373-FB3 range: Complete enclosure systems for 12 intrinsically

safe spur connections

• 9377-FB3 range: Compact fieldbus barrier module for 12 intrinsically

safe spur connections

• 937x-FB2 range: Complete enclosure system for 6 or 12 intrinsically

safe spur connections

• 9372-FB range: Redundant fieldbus barrier enclosure for up to 6

intrinsically safe spur connections

• 9387-FB range: Open frame, redundant fieldbus barrier with pre-assembled

system components for up to 5 intrinsically safe spur connections

Open frame versions are designed for installation into user-selected field enclosures.

These are suitable for applications requiring special enclosure features such as

viewing windows, removable gland plates, or where multiple Fieldbus Barrier

segments are required in a single enclosure. Each unit comprises pre-wired and

assembled modular components on a stainless steel baseplate, for installation

into an Ex e certified field enclosure without the need for additional internal

wiring or ancillary components.

Design features

FS32:

• Protects intrinsically safe spurs on MTL 937x-FB range fieldbus

• 20kA maximum surge current per line

• Plug connectors for quick and easy connection or rewiring

• Meets the requirements of IEC61158-2:2004

• Can be used on MTL Megablocks or other fieldbus equipment

• 10 year product warranty

FS32-XE:

• Protects Zone 1 trunk on 937x-FB3 MTL compact fieldbus barrier

• 20kA Total surge current

• Plug connectors for quick and easy connection or rewiring

• Compatible to Foundation™ fieldbus requirements of IEC61158-2:2014 and IEC6143-21

• Protects trunk and spurs of F200-XE Megablock wiring hubs

• 10 year product warranty

The FS32 surge protection device is designed for general purpose,

intrinsically safe and Ex ec Zone 2 applications. The FS32 fits our latest

fieldbus products the 9180 range of fieldbus power supplies, F300 and

F200-IS range of Megablock device couplers and the intrinsically safe

spurs of our fieldbus barrier wiring hubs.

For applications requiring Ex eb certification, the FS32-XE provides surge

protection for trunk and /or spur connections on a F200-XE MTL Megablock

device coupler as well as trunk surge protection on on a 937x-FB3 MTL

compact fieldbus barrier. These fieldbus components must be installed

in an Ex e certified field enclosure for mounting in an IEC Zone 1

hazardous area.

Design features

FS32:

• Protects intrinsically safe spurs on MTL 937x-FB range fieldbus

• 20kA maximum surge current per line

• Plug connectors for quick and easy connection or rewiring

• Meets the requirements of IEC61158-2:2004

• Can be used on MTL Megablocks or other fieldbus equipment

• 10 year product warranty

FS32-XE:

• Protects Zone 1 trunk on 937x-FB3 MTL compact fieldbus barrier

• 20kA Total surge current

• Plug connectors for quick and easy connection or rewiring

• Compatible to Foundation™ fieldbus requirements of IEC61158-2:2014 and IEC6143-21

• Protects trunk and spurs of F200-XE Megablock wiring hubs

• 10 year product warranty

The Crouse-Hinds series MTL FS32 family of surge protection devices

prevent surges and transient over-voltages conducted along the Trunk

or Spurs of fieldbus systems from damaging the associated electronics

such as power supplies, device couplers, fieldbus barriers, terminators,

and the bus control equipment. There is no additional wiring required

to add a surge protector to a fieldbus trunk or spur, simply unplug the

connector, plug in the FS32 surge protector to the device, tighten the

screw on the earth bar and plug the connector into the FS32.

This delivers significant installation cost savings and makes adding a

surge protector to an existing installation very simple.

The FS32 space saving design helps to reduce the size of junction

boxes and ease installation. In operation, the FS32 does not adversely

affect the performance or operation of the fieldbus or connected equipment.

 It allows signals to pass with little attenuation while diverting surge

currents safely to earth (ground) and clamping output voltages to safe

levels.

• Protects intrinsically safe spurs on MTL 937x-FB range fieldbus

• 20kA maximum surge current per line

• Plug connectors for quick and easy connection or rewiring

• Meets the requirements of IEC61158-2:2004

• Can be used on MTL Megablocks or other fieldbus equipment

• 10 year product warranty

The FS32 represents the next generation of surge protection to be

fitted on Foundation™ fieldbus Systems. The space saving form factor

allows the FS32 to be connected directly to the terminal receptacle on

the module carrier of the 9370 fieldbus barrier. The earth (ground) is

connected through the mounting screw in one simple operation. The

field spur cable termination block plugs directly into the FS32 allowing

fast and effective retro fitting if desired with no additional hardware

being required.

The FS32 surge protection device prevents surges and transient

over-voltages conducted along the Trunk or Spurs of fieldbus systems

from damaging the associated electronics such as terminators, spur

blocks and the bus control equipment. Designed to fit Eaton’s latest

MTL fieldbus barrier product to protect spurs the FS32 can also be

used to protect spurs on Megablock wiring hubs. This space saving

design helps to reduce the size of junction boxes and ease installation.

The multi-stage hybrid surge protection network at the heart of

the FS32 uses a combination of solid state electronics and a gas-filled

discharge tube (GDT) to provide surge protection up to 20kA. This

impressive surge protection circuit is design to exhibit exceptionally

low line resistance and has negligible voltage drop to the spurs.

In operation the FS32 does not adversely affect the performance

or operation of the fieldbus or connected equipment, it allows signals

to pass with little attenuation while diverting surge currents safely to

earth (ground) and clamping output voltages to safe levels.

Fully automatic in operation the FS32 devices react immediately

to make sure that the equipment is never exposed to damaging

surges between lines or the lines to earth (ground). Reacting

instantaneously the FS32 redirects surges safely to earth (ground)

and then resets automatically.

The multi-stage hybrid surge protection network at the heart of

the FP32. uses a combination of solid state electronics and a gas-filled

discharge tube (GDT) to provide surge protection up to 20kA. This

impressive surge protection circuit is designed to exhibit exceptionally

low line resistance and adds only a tiny voltage drop to the bus. As a

result, no matter how many FP32 devices are connected to a Trunk or

Spur the system will still be able to support up to 32 transmitters as

specified by IEC 61158-2.

In operation the FP32 device does not adversely affect the

performance or operation of the fieldbus or connected equipment,

it allows signals to pass with very little attenuation while diverting

surge currents safely to earth (ground) and clamping output voltage

to safe levels.

Fully automatic in operation, FP32 devices react immediately

to make sure that equipment is never exposed to damaging

surges between lines or the lines and earth (ground). Reacting

instantaneously, the FP32 redirects surges safely to earth and then

resets automatically.

DIN-rail mounting and a small footprint allow the FP32 to be

conveniently located near terminators and spur blocks, while plug

connectors for Trunk / spur cables and the earth (ground) & shield of

the cable make removing a device or re-patching a simple operation.

A 10 Year ‘No Fuss’ warranty is available, as standard, for the FP32.

so if a correctly connected device should fail for any reason, simply

return it for a free replacement.

The FP32 meets IEC 61158-2:2000 for 31.25kB/s systems such as

Foundation™ fieldbus, PROFIBUS-PA and WorldFIP.

DIN-rail mounting, 20kA surge protection for fieldbus systems

• DIN-rail mounting for easy installation and automatic earthing (grounding)

• 20kA maximum surge current per line

• Plug connectors for quick and easy connection or rewiring

• Meets the requirements of IEC61158-2:2004 for Foundation™ fieldbus

• 10 year product warranty

The FP32 surge protection device prevents surges and transient

over-voltages, conducted along the Trunk or Spurs of fieldbus systems,

from damaging the associated electronics such as terminators, spur

blocks and the bus control equipment. The FP32 is designed to be

used at both ends of the Trunk where a Spur is connected, to safely

divert any surges to earth.

The multi-stage hybrid surge protection network at the heart of

the FP32. uses a combination of solid state electronics and a gas-filled

discharge tube (GDT) to provide surge protection up to 20kA. This

impressive surge protection circuit is designed to exhibit exceptionally

low line resistance and adds only a tiny voltage drop to the bus. As a

result, no matter how many FP32 devices are connected to a Trunk or

Spur the system will still be able to support up to 32 transmitters as

specified by IEC 61158-2.

Device

The address (in decimal and hexadecimal) and signal level of each

device on the network is displayed in turn by pushing the “SELECT”

button. On Foundation fieldbus™ networks, the first device shown

will be the LAS. Measurements greater than 150mV are OK.

Average Noise

Displays the average noise based on the average of the last 100

noise measurements. Noise levels are measured and displayed in 3

frequency bands: frequencies in the fieldbus signalling band (Fieldbus

Frequency, FF), frequencies below the fieldbus signalling band (Low

Frequency, LF) and frequencies above the fieldbus signalling band

(High Frequency, HF). The particular frequency band displayed is

selected by pushing the “SELECT” button. Measurements of less

than 75mV are OK.

Peak Noise

Displays the peak noise recorded since the Monitor was connected.

The value displayed is the highest noise level measured since the last

reset. Peak noise levels are measured and displayed in the same three

frequency bands as average noise. Measurements of less than 75mV

are OK.

Segment Check

When first connected, the FBT-6 gathers data for all of its monitoring

functions. If all the measured data is within an acceptable range, the

Monitor displays “ALL MEASUREMENTS OK”.

Voltage

The DC voltage on the network is shown. Measurements over 9 volts

are OK. The maximum input voltage is 32.0 volts.

Device Count

If there are fieldbus devices active on the network, the Monitor counts

them. If the count has remained the same since the initial network

check was performed, the display shows “OK”.

Note: on Foundation™ fieldbus networks, the Link Active Scheduler

(LAS) is considered a device and, as such, is included in the count.

The FBT-6 is more sensitive to missed communications than most PC

monitoring software. As a result, a device may still show up on PC

monitoring software, even though the FBT-6 has removed the device

from its internal list of active devices. Devices having communication

difficulties may show up on the FBT-6 as repeatedly being added or

dropped. If a device leaves the network, the display shows “–”; if a

new device is added it shows “+”.