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 “+”.

Operation

The FBT-6 is connected to the network using the clip-on probes at the

end of the cable. The red probe is connected to the fieldbus + wire,

the black probe to the – wire and the green probe to the shield wire.

The + and – test leads are polarity sensitive and the Monitor will not

operate if they are reversed.

When first connected to a fieldbus, a version number is displayed

for several seconds. The Monitor then performs an Overall Network

Check to give the user a quick indication of network health.

The “FUNCTION” and “SELECT” buttons are used to select from

network parameters that can be examined with the Monitor. When

a function is selected, the data portion of the LCD display is blank

until the Monitor has collected and processed the data. After that,

the measured value is shown. The indication “OK” is shown if the

measured value is within the acceptable range. The indication “BAD”

is shown if the measured value is outside of the acceptable range.

The rotating symbol in the lower right corner of the display indicates

that there is network activity. A horizontal bar (underscore) under the

rotating symbol indicates that a frame was detected, but could not be

decoded. This is not a maintained function, so if a single “bad” frame

is detected, the underscore will only display for a short time. Periodic

“bad” frames will cause the underscore to blink.

Here follows a more detailed explanation of each of the Monitor’s

functions.

Retransmit

The FBT-6 checks for any device not responding to a LAS pass token

and indicates the address (decimal and hexadecimal) of the last device

that failed to respond to the LAS pass token, together with the number

of missed pass tokens since the function was reset. If more than 250

re-transmissions are detected, the display will read “250+”. Pressing

and holding the “SELECT” key for 2 seconds will reset the re-transmit

count for all devices to zero. Pressing the “SELECT” button for less

than 2 seconds displays the number of detected, missed pass tokens

for each device.

Add–Drop

If a new device is added to the network, the Monitor will display

its address and signal level. If a device does not respond to a Pass

Token frame, the device is considered “dropped” by the FBT-6 and

the Monitor will display the address and last known signal level of the

dropped device.

Shield Short

If a short circuit between the + fieldbus wire and the cable shield

is detected, “(+) TO SHIELD SHORT” is displayed. If the short

is between the – wire and the shield, “(–) TO SHIELD SHORT” is

displayed. If a detected shield short goes away the Monitor indicates

an INTERMITTENT SHIELD SHORT to (+) or (-).

Save Report

Saves the data collected by the Monitor as a report. Up to 8 reports

may be saved from multiple segments and/or multiple locations on

one segment.

Transfer Report

Connect the Monitor to a PC USB port and transfer the saved reports

to Excel files on the PC.

Set Report Names

Customize the names of the reports saved in the Monitor to easily

identify the report source

Set OK/BAD Limits

Change the limits at which Monitor measurements transition from OK

to BAD to establish customized plant standards.