Allen-Bradley Series B Bedienungsanleitung

Publication 1797-IN533-EN-P - August 2017

Installation Instructions

FLEX Ex 85…253V AC In/Quad-Ex DC Out

Power Supply

Catalog Number 1797-PS1E Series B

Topic Page

Important User Information 2

About the Power Supply 3

Understand System Planning 4

Installation in Zone 1, 22 6

Electrostatic Charge 8

Outputs 9

Mount the 1797-PS1E Power Supply 10

Customer Connections 11

Typical Wiring Configurations 11

1797-PS1E Mounting Dimensions and Terminal Base Assignments 12

Repair 12

Specifications - 1797-PS1E Power Supply 13

Ferrite Beads 15

2FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply

Publication 1797-IN533-EN-P - August 2017

Important User Information

Solid state equipment has operational characteristics differing from those of

electromechanical equipment. Safety Guidelines for the Application, Installation and

Maintenance of Solid State Controls (Publication SGI-1.1 available from your local Rockwell

Automation sales office or online at http://literature.rockwellautomation.com) describes

some important differences between solid state equipment and hard-wired

electromechanical devices. Because of this difference, and also because of the wide variety

of uses for solid state equipment, all persons responsible for applying this equipment must

satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or

consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes.

Because of the many variables and requirements associated with any particular installation,

Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on

the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of

information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission

of Rockwell Automation, Inc. is prohibited.

Throughout this manual we use notes to make you aware of safety considerations.

WARNING

Identifies information about practices or circumstances that can cause an explosion in a

hazardous environment, which may lead to personal injury or death, property damage, or

economic loss.

IMPORTANT

Identifies information that is critical for successful application and understanding of the

product.

ATTENTION

Identifies information about practices or circumstances that can lead to personal injury or

death, property damage, or economic loss. Attentions help you identify a hazard, avoid a

hazard, and recognize the consequence

SHOCK HAZARD

Labels may be on or inside the equipment to alert people that dangerous voltage may be

present.

BURN HAZARD

Labels may be on or inside the equipment to alert people that surfaces may be dangerous

temperatures.

FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply 3

Publication 1797-IN533-EN-P - August 2017

About the Power Supply

The power supply is an essential component in the operation of an

intrinsically-safe system. It must isolate the unsafe incoming power from the

control system and limit the available energy to IS-safe levels.

No other power source is needed to operate any components attached to the

FLEX Ex system in the hazardous area. Power for valves, actuators, or

transmitters come from the FLEX Ex modules.

ATTENTION

This equipment is considered Group 1, Class A industrial equipment

according to IEC/CISPR Publication 11. Without appropriate

precautions, there may be potential difficulties ensuring

electromagnetic compatibility in other environments due to

conducted as well as radiated disturbance.

This equipment is supplied as enclosed equipment. It should not

require additional system enclosure when used in locations

consistent with the enclosure type ratings stated in the

Specifications section of this publication. Subsequent sections of

this publication may contain additional information regarding

specific enclosure type ratings, beyond what this product provides,

that are required to comply with certain product safety certifications.

30686

1797-PS1E

4FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply

Publication 1797-IN533-EN-P - August 2017

The 1797-PS1E is an 85…253V AC in/quad-Ex DC out power supply in a

flame-proof enclosure with increased safety input/output terminations. The

85…253V AC gland is an M20 x 1,5 and can accept a cable from 6…12 mm

(0.267…0.472 in.) in diameter. The Ex outputs are M16 x 1,5 and can accept a

cable from 4…8 mm (0.157…0.315 in.) in diameter.

Features include the following:

•85…253V AC supply source

•Four channels, 8.5 W output each channel

•Outputs are IS galvanically isolated from the source

•All channels are independently IS limited

Understand System Planning

Part of system planning is determining what modules are needed for the

application, how many power supplies are needed, how to best partition the

system, and where to locate the system cabinets.

A key task in the development cycle is determining the number of power

supply outputs (thus power supplies) you will need. In the following example,

you will need 11 power outputs if you are using the fiber hub, which requires

8.5 W.

Each power supply has four independent IS-power outputs capable of 8.5 W

each. In the above example, we required 11 IS-power outputs so 3 power

supplies were sufficient.

Modules Requires Modules Requires

Fiber hub 8.5 W Two thermocouple inputs 1.6 W each

Two ControlNet adapters 8.5 W each Two digital outputs 7.5 W each

Two analog inputs 7.5 W each Three NAMUR digital inputs 2.8 W each

Two analog outputs 6.3 W each Two counter inputs 4.25 W each

FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply 5

Publication 1797-IN533-EN-P - August 2017

The total number of power supplies needed depends on the modules used

and the total system configuration. The following illustration shows how this

example may be configured.

IMPORTANT

Even though modules may be supplied with power from the same

power-supply output channel, galvanic isolation in the module

provides module-to-module galvanic isolation. Depending upon

the module type, galvanic isolation (channel-to-channel within the

module) may or may not be provided. See the module’s

specifications for more information.

IS Pwr

Safe Area

Hazardous Area

1797 power supply

ACNR Spare IE8 OE8 IRT8 Spare Spare IJ2 IJ2

ACNR OB4 OB4D IBN16 IBN16 IBN16 IE8 IRT8 OE8

RPA RPFM RPFM

IS 1797 I/O

IS 1797 Fiber Hub

IS Pwr

EEx d/e

EEx ib

41306

Unsafe

Power

Entrance

Spare

Unsafe

Power

Entrance

Unsafe

Power

Entrance

EEx d/e

EEx ib

EEx d/e

EEx ib

6FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply

Publication 1797-IN533-EN-P - August 2017

Make certain that you only connect intrinsically-safe power supplies to other

intrinsically-safe system modules or adapters to maintain the integrity of the

intrinsically-safe backplane.

Installation in Zone 1, 22

The 1797-PS1E Series B power supply has a protection factor of IP65. Refer

to the specifications table for the IS module type.

Application

When installing, commissioning, operating, and maintaining devices or device

components of the FLEX Ex system as intrinsically-safe electrical apparatus

in potentially explosive atmospheres according to EN 50020, you must heed

the EC- type examination certificate and the applicable national and local

construction, installation, and operating regulations.

Zone 1

The Power Supply unit can be located in Zone 1. The permissible ambient

temperature of -20…70 °C must not be exceeded.

Zone 22

The housing type of the power supply is applicable for use in Zone 22. It

corresponds with the category 3D acc. to directive 94/9 EC and is marked

with a type label accordingly.

ATTENTION

The power supply cannot be used in an intrinsically safe

environment after its outputs have been exposed to nonintrinsically

safe signals.

41307

FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply 7

Publication 1797-IN533-EN-P - August 2017

Installation and Commissioning

The power supply unit can be located in Zones 1, 2, and 22 as stated on its

label. The output circuits are according to the ignition protection class EEx ib

and can be installed in Zones 1, 2, and 22. When installing, you must heed the

EC- type examination certificate (especially the special conditions) and the

applicable national and local construction, installation, and operating

regulations.

The housing (EEx d) must not be opened (screw cover). Connections are

made in the EEx e terminal box.

Install the Power feed lines only in the deenergized state. Also follow the

information on the type label, respectively the covers of the terminals.

You can connect and disconnect the intrinsically-safe output terminals during

operation.

All unused cable glands must be covered by appropriate prototype tested

EEx e lead seals to keep the requirement of IP54.

The cover installed on the nonintrinsically-safe screw terminals

(IP30) may only be removed in the deenergized state and must be remounted

after working on these terminals.

Before closing the cover of the EEx e wiring box, inspect the seal for any

signs of damage. In case of damage, the seal must be replaced by a new seal

that is identical to the damaged seal.

The power supply housing contains two flanges, which can be connected to a

wall or other structural part by means of fixing screws. Select fixing screws

that ensure secure fixing of the power supply. Consider the condition of

vibration of the power supply when making this selection.

On the EEx d housing there is an earthing screw. This screw must be

connected to Earth with a conductor having a minimum of 4 mm2(0.006 in.2)

area. The connection has to be protected against self opening and corrosion.

Corrosion protection can be achieved by using tinned terminal ends.

Before opening the EEx e terminal box (for example, for maintenance

purposes), it must be cleaned of all dust particles to ensure that no dust can

enter the box.

8FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply

Publication 1797-IN533-EN-P - August 2017

Electrostatic Charge

Protect the system against electrostatic charge. Post a sign near this module.

Attention! Avoid electrostatic charge.

ATENÇÃO! PREVENIR CONTRA O ACÚMULO DE

CARGA ELETROSTÁTICA

For your convenience, a sign that can be cut out and posted is included on the

last page of these installation instructions.

European Hazardous Location Approval

The following applies to products marked II 2 G

•Are Equipment Group II, Equipment Category 2, and comply with

the Essential Health and Safety Requirements relating to the design

and construction of such equipment given in Annex II to Directive

2014/34/EU. See the EC Declaration of Conformity at

http://www.rockwellautomation.com/products/certification

for details.

•The type of protection is “Ex de [ib] IIC T4 Gb” according

to EN 60079-11.

•Comply to Standards EN 60079-0:2012, EN 60079-1:2007,

EN 60079-7:2007, and EN 60079-11:2012, reference certificate

number DMT 02 ATEX E 253 X.

•Are intended for use in areas in which explosive atmospheres caused

by gases, vapors, mists, or air are likely to occur occasionally. Such

locations correspond to Zone 1 or 2 classification according to ATEX

directive 2014/34/EU.

FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply 9

Publication 1797-IN533-EN-P - August 2017

IEC Hazardous Location Approval

The following applies to products with the IECEx certification:

•Are intended for use in areas in which explosive atmospheres caused

by gases, vapors, mists, or air are likely to occur only infrequently and

for short periods. Such locations correspond to Zone 1 or 2

classification to IEC 60079-0.

•The type of protection is “Ex de [ib] IIC T4 Gb” according to

IEC 60079-11.

•Comply to Standards IEC 60079-0:2011, IEC 60079-1:2007-04,

IEC 60079-7:2006-07, and IEC 60079-11:2011, reference IECEx

certificate number IECEx BVS 09.0019X.

Special Conditions for Safe Use:

For an ambient temperature above 60 °C, power supplies must be connected

with leads that are designed for a service temperature of at least 80 °C.

Outputs

When using an intrinsically-safe electrical apparatus according to EN50020,

the European directives and regulations must be followed.

The channels in the power supply are electrically connected to each other and

have a common +V line.

IMPORTANT

You cannot interconnect lines because of the intrinsic safety

requirements.

10 FLEX Ex 85…253V AC In/Quad-Ex DC Out Power Supply

Publication 1797-IN533-EN-P - August 2017

Mount the 1797-PS1E Power Supply

Follow these directions to properly install the 1797-PS1E power supply. Refer

to Installation and Commissioning, page 7, for important precautions and

considerations.

1. Remove the screws on the cover of the power supply EEx e terminal

box to access the input and output terminals.

2. Thread the blue IS-safe output power wiring through the blue IS

compression seals.

3. Connect the blue IS-safe output power wiring to the output terminals

making sure all connections are tight.

These power supply outputs provide the input power to the FLEX Ex

modules.

4. Thread the hazardous incoming power wiring through the black

compression seals.

5. Connect the hazardous incoming power wiring to the input terminals

making sure all connections are tight.

You can daisy chain the hazardous incoming power wiring to further

supplies to simplify system wiring.

ATTENTION

Use star washers and nuts to make sure you have a good electrical

connection. Scrape the paint off the back panel in those areas where

grounding bolts will be located.

ATTENTION

Keep hazardous and IS-safe wiring separated in a suitable

fashion. Do not leave long, excess wiring that could bridge

between the hazardous and safe areas.

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