Rockwell Automation 840E User Manual

Solid-State Level Sensors

USER MANUAL

840E

Important User Information

WARNING

IMPORTANT

ATTENTION

SHOCK HAZARD

BURN HAZARD

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 on-line at http://www.ab.com/manuals/gi) 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, when necessary we use notes to make you aware of safety considerations.

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.

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

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

• recognize the consequence

Labels may be located on or inside the equipment (e.g., drive or motor) to alert people that dangerous voltage may be present.

Labels may be located on or inside the equipment (e.g., drive or motor) to alert people that surfaces may be dangerous temperatures.

Table of Contents

1 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.1 Designated Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2 Installation, Commissioning, and Operation . . . . . . . . . . . . . . . . . . . . . . . . 2

1.3 Operational Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 Product Identification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.1 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3.2 Installation Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.1 DC PNP Version with M12 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.2 AC Version with Valve Connector NPT 1/2 . . . . . . . . . . . . . . . . . . . . . . . . . 12

4.3 Functional Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5 Technical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.1 Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.2 Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3 Operating Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Safety Instructions

1 Safety Instructions

1. 1 Designated Use

The Bulletin 840E is a level switch for all kinds of fluids and is used in tanks, containers and pipelines. The device has been safely built with state-of-the-art technology and meets the applicable requirements and EC Directives. It can, however, be a source of danger if used incorrectly or for anything other than the designated use.

1. 2 Installation, Commissioning, and Operation

Only personnel familiar with these types of products and associated machinery should plan or implement the installation, start-up, configuration, and subsequent maintenance of the

Bulletin840E level switch.

ATTENTION: Installation and commissioning must be carried out by qualified individuals. Failure to comply may result in personal injury or equipment damage.

1. 3 Operational Safety

• Functional safety The Bulletin 840E level switches were developed according to the standards EN60068 and EN 61326.

• Hazardous areas The Bulletin 840E is not approved for use in intrinsic safety (hazardous area) applications.

1. 4 Return

Before returning a device to Rockwell Automation, be sure to remove all fluid residue. This is particularly important if the fluid is a health hazard, e.g. flammable, toxic, caustic, carcinogenic, etc.

ATTENTION: Do not return a measuring device if you are not absolutely certain that all traces of hazardous substances have been removed, e.g. substances which have penetrated crevices or diffused through plastic.

Product Identification

2 Product Identification

Figure 2.1: Nameplate

Notes:

• Specifications and ratings may differ from those shown in Figure 1, depending on particular

model. Refer to product nameplate or catalog for actual ratings and specifications.

• The series number indicates the version of the switch. A change in the series letter does not

have any effect on the compatibility.

Installation

3 Installation

3. 1 Dimensions

3.1.1 1/2 in. NPT and 3/4 NPT Process Connection [mm (in.)]

68.5

(2.70)

22.7

(0.89)

M12

1/2 in. NPT VALVE

(1.57)

(1.42)

51.5

(2.03)

Figure 3.1: NPT Dimensions

Ø40

(Ø1.57)

161

(6.34)

63.9

(2.52)

47.9

(1.89)

1/2 in. NPT

3/4 in. NPT