Minebea Intec WE1 option for PR 5900 Owner's manual

Brand: Minebea Intec

Model: WE1 option for PR 5900

Type: Owner's manual

Minebea Intec WE1 option for PR 5900

The Minebea Intec WE1 option for PR 5900 is a device that allows you to connect load cells or weighing platforms located in a hazardous area (zone 1 or 21) to a PR 5900 indicator located in a safe area. This device ensures that no electrical power exceeding the maximum permissible limits is transmitted into the hazardous area, even in the event of a circuitry fault.

Some possible use cases for this device include:

Weighing hazardous materials in a laboratory or manufacturing environment
Monitoring the weight of a tank or silo in a hazardous area
Controlling the filling or emptying of a hazardous material container

Minebea Intec WE1 option for PR 5900

Some possible use cases for this device include:

Weighing hazardous materials in a laboratory or manufacturing environment
Monitoring the weight of a tank or silo in a hazardous area
Controlling the filling or emptying of a hazardous material container

WE1 option for PR 5900

Additional information

Translation of original additional information 9499 059 59100 Edition 3.4.0 03/02/2023

Minebea Intec GmbH, Meiendorfer Str. 205 A, 22145 Hamburg, Germany

Phone: +49.40.67960.303 Fax: +49.40.67960.383

Foreword

Must be followed!

Any information in this document is subject to change without notice and does not represent a commitment on

the part of Minebea Intec unless legally prescribed. This product should only be operated/installed by trained

and qualied personnel. In correspondence concerning this product, the type, name, and release number/serial

number as well as all license numbers relating to the product have to be cited.

Note

This document is partially protected by copyright. It may not be changed or copied, and it may not be used

without purchasing or written permission from the copyright owner (Minebea Intec). The use of this product

constitutes acceptance by you of the abovementioned provisions.

Table of contents

1 Safety instructions...............................................................................................................................2

1.1 General notes..............................................................................................................................................................2

1.2 Description...................................................................................................................................................................2

1.3 Marking for Ex Zones.................................................................................................................................................2

2 Installation........................................................................................................................................... 3

2.1 General information...................................................................................................................................................3

2.2 Weighing electronics board for zones 1 and 21...................................................................................................... 3

2.3 Display..........................................................................................................................................................................4

2.4 Connection within the Ex area..................................................................................................................................5

2.5 WE1 load cell supply voltage.....................................................................................................................................8

2.6 WE1 potential-free load cell supply voltage...........................................................................................................8

2.7 Potential equalization................................................................................................................................................9

2.8 Screens....................................................................................................................................................................... 10

3 Repairs/Maintenance/Solder work.....................................................................................................11

3.1 Repairs......................................................................................................................................................................... 11

3.2 Maintenance............................................................................................................................................................... 11

3.3 Soldering work...........................................................................................................................................................11

4 Technical data.....................................................................................................................................12

4.1 General data...............................................................................................................................................................12

4.2 Weighing electronics board WE1.............................................................................................................................12

4.3 Connecting load cells/junction boxes/weighing platforms ...............................................................................13

4.4 Load cell supply ........................................................................................................................................................ 14

4.5 Connecting cables .................................................................................................................................................... 14

4.6 Documentation on the CD included ...................................................................................................................... 14

5 Appendix ............................................................................................................................................15

5.1 Certicates/control drawing/safety instructions.................................................................................................15

WE1 option for PR 5900 Table of contents

Minebea Intec EN-1

1 Safety instructions

1.1 General notes

CAUTION

Warning of personal injury.

Observe the safety instructions listed in the PR 5900 installation manual.

1.2 Description

The WE1 option is used to establish an intrinsically safe interface between a PR 5900

installed in a safe area (or with Y2 option in zone 2/22) and load cells or weighing

platforms located in a zone 1 or 21 Ex area as dened by European Directive 2014/34/EU

and related harmonized European standards (see also Chapter 5.1).

The device is designed for weighing applications requiring intrinsically safe interfacing.

The PR 5900 with WE1 option ensures that no electrical power exceeding the maximum

permissible limits is transmitted into the Ex area, even in the event of a circuitry fault.

The PR 5900 with WE1 option provides for intrinsically safe connection to

-a voltage output for the supply of load cells or weighing platforms located in zone 1

or 21,

-a measuring voltage input from zone 1 or 21, and

-a sense voltage input from zone 1 or 21.

This is achieved by means of double current and voltage limiters in the supply circuit as

well as voltage limiters in the analog electronics (weighing electronics board) of the

PR 5900 with WE1 option.

1.3 Marking for Ex Zones

Zone Marking Certicate no.

1 II (2) G [Ex ib Gb] IIC/IIB

[Ex ib Gb] IIC/IIB DEKRA 13ATEX0186X

IECEx DEK 13.0065X

21 II (2) D [Ex ib Db] IIIC

[Ex ib Db] IIIC DEKRA 13ATEX0186X

IECEx DEK 13.0065X

Note:

See also Chapter 5.1.

NOTICE

Installation in Ex areas

The Ex safety instructions provided in the appendix must be observed when

installing in Ex areas.

WE1 option for PR 5900 1 Safety instructions

EN-2 Minebea Intec

2 Installation

2.1 General information

Installation should be performed by an authorized specialist, in accordance with

applicable laws, rules and regulations, ordinances, and standards. In particular, the

EN 60079-14 standard must be taken into account.

All cables leading to and from the PR 5900 have to be securely installed.

Any connections that are not being used (cable glands) must be sealed o with approved

locking screws in order to guarantee appropriate IP protection.

WARNING

Working on the device while it is switched on may have life-threatening

consequences.

Disconnect the device from the power supply.

Live parts may be exposed when tools are used to open covers or remove parts.

Please note that capacitors in the device may still carry an electrical charge even

after disconnecting the device from all voltage sources.

Do not remove any existing safety equipment/covers.

2.2 Weighing electronics board for zones 1 and 21

Note:

The weighing electronics board cannot be replaced retroactively as this option and the

basic unit are permanently assigned during production.

This assignment is regulated by the BIOS.

If these components do not match, an error message will appear and the device will not

start.

2 Installation WE1 option for PR 5900

Minebea Intec EN-3

No. Description

1 Connection for Ex connection cable PR 6136/.

2 CAL switch

3 Ex partition wall

2.3 Display

When installed correctly, the Maxxis displays an Ex symbol in the status display next to

weighing point A.

WE1 option for PR 5900 2 Installation

EN-4 Minebea Intec

2.4 Connection within the Ex area

Note:

Components are only depicted schematically on the connection diagram. The

connections are specically described in the PR 5900 installation manual.

Example with PR 1625/60 and external remote display

2 Installation WE1 option for PR 5900

Minebea Intec EN-5

①Load cell

②Potential equalization line

③Ex zone

④No Ex zone

⑤Screen

⑥RS-422/485 interface PR1604/00; solder link X3: closed; solder link X7: closed

⑦Factory setting, see also Chapter 2.5

⑧Screen clamping rail

⑨PR 5900 with WE1 option

⑩UDC = 24 V or UAC = 230 V

⑪power supply

⑫external remote display

WE1 option for PR 5900 2 Installation

EN-6 Minebea Intec

Example with remote terminal PR 5900/60

2 Installation WE1 option for PR 5900

Minebea Intec EN-7

①Load cell

②Potential equalization line

③Ex zone

④No Ex zone

⑤Screen

⑥Power supply unit YPSC01-X

⑦Factory setting, see also Chapter 2.5

⑧Screen clamping rail

⑨PR 5900 with WE1 + CX1 option

⑩UDC = 24 V or UAC = 230 V

⑪With cable lengths >50 m, the cable screen may only be connected at one end.

Note:

The regulations for installation in the Ex zone must be complied with.

2.5 WE1 load cell supply voltage

The load cell supply voltage cannot be changed retroactively.

The desired voltage must be specied when ordering, see Chapters 4.2 and 4.4.

2.6 WE1 potential-free load cell supply voltage

The device with WE1 option will be delivered with an intrinsically safe circuit that is

galvanically connected with the equipotential bonding conductor (PE).

At distances >50 m a potential-free load cell supply voltage is required. This is done as

follows:

When jumper "J250" is open, the intrinsically safe circuit is isolated from the

housing (PE) at a minimum test voltage of 500 V.

1. Cut jumper "J250" on the weighing electronics board.

2. Turn the remaining wire leads upward and cut them just above the circuit board.

Make sure that both contacts are separated by a minimum distance of 2 mm and do

not touch other potentials.

WE1 option for PR 5900 2 Installation

EN-8 Minebea Intec

2.7 Potential equalization

In Ex areas, equipotential bonding must be established to avoid any compensatory

currents between the individual conducting system components.

Legend

No. Component Cross-section

(1) Conductor for additional potential equalization ≥4.0 mm2Cu

(2) Conductor for potential equalization ≥6.0 mm2Cu

(3) Conductor for potential equalization ≥10.0 mm2Cu

(4) Main conductor for potential equalization ≥10.0 mm2Cu

(5) Earthing conductor ≥10.0 mm2Cu

(6) Load cell bypass ≥10.0 mm2Cu

(A) Equipotential bonding conductor (busbar)

(B) Main equipotential busbar

(E) To main earth (electrode)

2 Installation WE1 option for PR 5900

Minebea Intec EN-9

2.8 Screens

WARNING

Improper connection of the connecting cable screens can cause severe personal

injury and damage to systems!

At distances > 50 m, the screen may only be connected at one end.

Connect the connecting cable screen to the PR 5900, see installation manual.

Open bridge "J250" on the WE1 weighing electronics board; see Chapter 2.6.

For load cells where the screen is ush against the housing and when using junction

box PR 6130/64 Sa, connect the screen of the connecting cable and open the bridge

above the sense terminals on the board of the junction box, see PR 6130/64 Sa

installation manual.

Do not connect the connecting cable screen in the case where load cell screens are

ush against the housing and when using junction box PR 6130/65 S; see also

Chapter 2.4.

WE1 option for PR 5900 2 Installation

EN-10 Minebea Intec

3 Repairs/Maintenance/Solder work

3.1 Repairs

Repairs are subject to inspection and must be carried out at Minebea Intec.

In case of defect or malfunction, please contact your local Minebea Intec dealer or service

center for repair.

When returning the device for repair, please include a precise and complete description of

the problem.

3.2 Maintenance

Maintenance work may only be carried out by a trained technician with expert knowledge

of the hazards involved and the required precautions.

3.3 Soldering work

Soldering work on the weighing electronics board is not permitted.

3 Repairs/Maintenance/Solder work WE1 option for PR 5900

Minebea Intec EN-11

4 Technical data

4.1 General data

Note:

For further technical data, refer to the PR 5900 installation manual.

Connection for the Ex area Via 4 mm2terminals

Connection values See Chapter 5.1

Equipotential bonding conductor (PE) Via terminal, see Chapter 2.6

4.2 Weighing electronics board WE1

The weighing electronics board is inserted in the "WP B" slot. The CAL switch "B" (1) is

located on the board. Adjustment data and parameters are saved to the EAROM (non-

volatile memory) of the weighing electronics board.

Note:

The voltage (UDC = 7.2 V or UDC = 12 V) must be specied when ordering!

7.2 V:

The total resistance (RLC) of the load cells is between 80 and 150 Ω, see also

Chapter 4.4.

12 V:

The total resistance (RLC) of the load cells is >150 Ω, see also Chapter 4.4.

WE1 option for PR 5900 4 Technical data

EN-12 Minebea Intec

Technical data

Description Data

Connection 7-pin plug (male), screen connection on housing and

to GNDA

Number of channels 1× 6‑wire or 4‑wire

Load cell type SG cells, 6‑ or 4‑wire connection possible

Load cell supply See Note

Capacity (number of load

cells) See Chapter 4.4

Sense input UDC = ±6 V, with monitoring

Sense voltage monito-

ring Sense voltage below 8 V, switchable to <8 V

Measurement input UDC = 0…36 mV, symmetrical to 0

Dead load suppression UDC = max. 36 mV (dead load + range)

Accuracy* 0.8 µV/e corr. to 4.8 mV for 6,000 e

Class III, according to OIML R76/EN45501

Min. measuring signal

(OIML)* 3,000 e: ≥0.20 mV/V

6,000 e: ≥0.40 mV/V

Max. resolution 7.5 million internal counts at 3 mV/V

Linearity* <0.003%

Zero point stability error

(Tk0)* <0.05 µV/K RTI; 0.004%/10 K at 1 mV/V

SPAN stability error

(Tkspan)* < ±4.0 ppm/K

Cable type 6‑wire with screen for entire cable and screen for measure-

ment cables, e.g. PR 6136/..

Cable length system-dependent

* with a measurement time of 160 ms and a 12 V supply

4.3 Connecting load cells/junction boxes/weighing platforms

The weighing electronics board WE1 is connected using a 7-pin plug.

Note:

For connection values, see Chapter 5.1.

4 Technical data WE1 option for PR 5900

Minebea Intec EN-13

4.4 Load cell supply

UDC = ±6.0 V (nominal)/≤96 mA Max. 4 load cells of 650 Ω each, connected

in parallel (= 162.5 Ω)

Supply voltage

UDC = ±3.6 V (nominal)/≤96 mA Max. 8 load cells of 650 Ω each, connected

in parallel (= 81.3 Ω)

4 load cells with 350 Ω each, connected in

parallel (= 87.5 Ω)

Tolerance range UDC = ±5.8…±6.2 V;

UDC = ±3.4…±3.8 V

Max. current ≤100 mA short circuit

Measuring voltage Vmeas Max. 36 mV (dierential)

Sense voltage Vsense ±6 V nominal (with ref. to ground)

±3.6 V nominal (with ref. to ground)

4.5 Connecting cables

Length of the connecting cable between junction box and instrument

Cable type PR 6136, PR 6136A max. 200 m – length of the load cell cable

Length of the connecting cable between weighing platform and instrument

Cable type LiYCY max. 200 m

4.6 Documentation on the CD included

The documents and manuals listed in the appendix (see Chapter 5.1) can be found on the

PR 5900 CD.

WE1 option for PR 5900 4 Technical data

EN-14 Minebea Intec

5 Appendix

5.1 Certicates/control drawing/safety instructions

Ser. no. Description Document no.

1 EC-Type Examination Certicate DEKRA 13 ATEX 0186 X

2 Certicate of Conformity IECEx DEK 13.0065 X

3 Safety instructions 940515900000-460

4 Control drawing 2004137

The documents listed in the table can be found on the PR 5900 CD.

5 Appendix WE1 option for PR 5900

Minebea Intec EN-15

Published by

Minebea Intec GmbH | Meiendorfer Strasse 205 A | 22145 Hamburg, Germany

Phone: +49.40.67960.303 | Email: [email protected]

www.minebea-intec.com

Minebea Intec WE1 option for PR 5900 Owner's manual

Brand: Minebea Intec

Model: WE1 option for PR 5900

Type: Owner's manual

Minebea Intec WE1 option for PR 5900

Some possible use cases for this device include:

Weighing hazardous materials in a laboratory or manufacturing environment
Monitoring the weight of a tank or silo in a hazardous area
Controlling the filling or emptying of a hazardous material container

Download PDF

report

Minebea Intec WE1 option for PR 5900 Owner's manual

Minebea Intec WE1 option for PR 5900 Owner's manual

Related papers

Other documents