Remote Automation Solutions FB3000 Remote Terminal Unit (RTU) User manual

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

Remote Automation Solutions

Emerson FB3000 Remote Terminal Unit (RTU)

Instruction Manual

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

ii

Device Safety Considerations

 Reading these Instructions

Before operating the device, read these instructions carefully and understand their safety implications. In some

situations, improperly using this device may result in damage or injury. Keep this manual in a convenient location

for future reference. Note that these instructions may not cover all details or variations in equipment or cover every

possible situation regarding installation, operation, or maintenance. Should problems arise that are not covered

sufficiently in the text, immediately contact Customer Support for further information.

 Protecting Operating Processes

A failure of this device – for whatever reason -- may leave an operating process without appropriate protection and

could result in possible damage to property or injury to persons. To protect against this, you should review the

need for additional backup equipment or provide alternate means of protection (such as alarm devices, output

limiting, fail-safe valves, relief valves, emergency shutoffs, emergency switches, etc.). Contact Remote

Automation Solutions for additional information.

 Returning Equipment

If you need to return any equipment to Remote Automation Solutions, it is your responsibility to ensure that the

equipment has been cleaned to safe levels, as defined and/or determined by applicable federal, state and/or local

law regulations or codes. You also agree to indemnify Remote Automation Solutions and hold Remote Automation

Solutions harmless from any liability or damage which Remote Automation Solutions may incur or suffer due to

your failure to ensure device cleanliness.

 Grounding Equipment

Ground metal enclosures and exposed metal parts of electrical instruments in accordance with relevant safety

standards. For the USA, refer to OSHA rules and regulations as specified in Design Safety Standards for Electrical

Systems, 29 CFR, Part 1910, Subpart S, dated: May 16, 1981 (OSHA rulings are in agreement with the National

Electrical Code). For international locations, refer to IEC 60364-4-41: PROTECTION AGAINST ELECTRIC SHOCK.

You must also ground mechanical or pneumatic instruments that include electrically operated devices such as

lights, switches, relays, alarms, or chart drives. The FB3000 includes a chassis ground lug. Unless specifically noted,

the chassis ground is isolated from ground terminals on individual modules installed in the device to prevent noise.

The chassis ground lug provides a path to earth ground for electrical safety, static discharge, and stray voltages. Do

not connect the chassis ground lug directly to a lightning arrestor/lightning rod.

Important: Complying with the codes and regulations of authorities having jurisdiction is essential to ensuring

personnel safety. The guidelines and recommendations in this manual are intended to meet or exceed applicable

codes and regulations. If differences occur between this manual and the codes and regulations of authorities

having jurisdiction, those codes and regulations must take precedence.

 Protecting from Electrostatic Discharge (ESD)

This device contains sensitive electronic components which can be damaged by exposure to an ESD voltage.

Depending on the magnitude and duration of the ESD, it can result in erratic operation or complete failure of the

equipment. Ensure that you correctly care for and handle ESD-sensitive components.

System Training

A well-trained workforce is critical to the success of your operation. Knowing how to correctly install, configure,

program, calibrate, and trouble-shoot your Emerson equipment provides your engineers and technicians with the skills

and confidence to optimize your investment. Remote Automation Solutions offers a variety of ways for your personnel

to acquire essential system expertise. Our full-time professional instructors can conduct classroom training at several of

our corporate offices, at your site, or even at your regional Emerson office. You can also receive the same quality

training via our live, interactive Emerson Virtual Classroom and save on travel costs. For our complete schedule and

further information, contact the Remote Automation Solutions Training Department at 800-338-8158 or email us at

[email protected].

Ethernet Connectivity

This automation device is intended to be used in an Ethernet network which does not have public access. The inclusion

of this device in a publicly accessible Ethernet-based network is not recommended.

FB3000 - CSA Approval Information

CD9411K

Issued: January 19, 2021

CSA-1

CSA Approval Information

SAFETY FIRST

Read this document carefully before installing an Emerson FB3000 RTU. Refer to the other

sections of the instruction manual for general information. In the event of a conflict between the

other sections of this manual and this document, always follow the instructions in this document.

Note

If the equipment is used in a manner not specified by the manufacturer, the protection provided by

the equipment may be impaired.

Module

Part Number(s)

Ordering Code

FB3000 8 Slot Chassis Assembly (Backplane) 400246-01-0, 510000-01-0 3CH08C

FB3000 Power Module Assembly 400223-01-0, 510008-01-0 3PWBLK

FB3000 CPU Module Assembly 400224-01-0, 510009-01-0 3CPU16

FB3000 CPU Personality Module Assembly 400225-01-0, 510007-01-0 3CPUSG

FB3000 8-Slot DIN Rail Assembly 510001-01-0 3DIN08

FB3000 12 Mixed I/O (12MIO) Module

Assembly

510006-01-0

400226-01-0

3MIX12

FB3000 12 Mixed I/O (12MIO) Personality

Module Assembly

510076-01-0 3MSG12

FB3000 I/O CPU Scanner Module 510121-01-0 3IOCPU

General Information:

Manufacturer: Bristol Inc. d.b.a. Remote Automation Solutions

CSA Master Contract Number: 179806

SRAM Backup Battery in Power

Modules (for memory and real-time

clock)

3V coin lithium battery BT1

(Renata model CR2450HT)

(Maxell model CR2450HR)

(Panasonic model BR2450A)

(Murata model CR2450W)

Rated Capacity: 490 mAh

Operating Temperature: –40oC to +125oC

SRAM Backup Battery in CPU Module

(for memory and real-time clock)

3V coin lithium battery BT1

(Renata model CR1632).

Rated Capacity: 125 mAh

Operating Temperature: –40oC to +85oC

Protective earthing (PE) conductor

(ground wire)

#14 AWG (2.1mm2)

Fuses Littelfuse® 0453010.MR Surface Mount Nano2 Fuse

10 Amps @ 125VDC

FB3000 - CSA Approval Information

CD9411K

Issued: January 19, 2021

CSA-2

Equipment Ratings:

Mode of Operation: Continuous

Pollution Degree: 2

Installation Category: DC supplied

Altitude: 2000 m

Humidity: 95% to temperatures up to 31oc decreasing linearly to

50% r.h. at 40oc; max 80 % r.h. non-condensing

Electrical Supply Rating: Input rating: 10.5-30Vdc

Controller Circuit: Max 5A at10.5 - 30V dc

Field Circuit: Max 5A at10.5 - 30V dc

Ambient Temperature Range:

(Tamb)

-40oC to +75oC

Temperature Code: T4

Vibration: 1.0 g for 10 to 150 Hz for 30 minutes; 0.5 g for 150 to

2000 Hz for 30 minutes

Locations: The

Emerson FB3000 Remote Terminal Unit (RTU)

is

listed by the Canadian Standards Association (CSA) as

suitable for use in Class I, Division 2, Groups A, B, C and

D hazardous locations (when installed in a suitably-

rated enclosure), and in Class I, Zone 2, AEX/Ex ec IIC

Gc hazardous locations (when installed in an IP54

enclosure per requirements of standards CSA/UL

60079-0 and CSA/UL 60079-7).

If no suitably-rated enclosure is provided, may only be

used in non-hazardous indoor locations.

Representative Power Supplies: 24V power supply at 10A to 20A as approved to

standard UL 60950-1.

Typical: Phoenix Contact

Quint-PS/1AC/24DC/10

or

Quint-PS/1AC/24DC/20

Extended Backplane Supported Configurations:

Voltage (Control/Loop)

Max number of

12MIO/12MIO Personality

Modules installed

Max number of 12MIO/12MIO

Personality Modules with loop

power enabled

30V 31 26

24V ≤ V < 30V 31 21

12V≤ V < 24V 21 10

10.5V≤ V < 12V 18 8

FB3000 - CSA Approval Information

CD9411K

Issued: January 19, 2021

CSA-3

Conditions of Use:

Wiring to or from this device, which either enters or leaves the user-provided enclosure, must

adhere to wiring methods suitable for Class I, Zone 2 and Division 2 Hazardous locations, as

appropriate for the installation and is subject to the acceptance of CSA or the inspection authority

having jurisdiction.

Install this device in a user-provided enclosure that provides a minimum entry protection of IP 54,

in accordance with IEC 60079-0:11.

Install the racks in a left to right horizontal direction (wall mount on DIN-rails) inside of the end user

system enclosure. Never mount the racks in a vertical stacked direction

When using DIN-rail mounting as the method of installation for the extended backplane

configuration, use DIN-rail end brackets at the two ends of the extended backplane to prevent side

movements of the equipment on the DIN-rail. Refer to the Emerson FB3000 RTU Instruction Manual

(D301851X012) for details.

CSA evaluates this equipment according to the following standards:

CAN/CSA-C22.2 No. 0-10

August 2011

General requirements — Canadian Electrical Code, Part

II

CAN/CSA Standard C22.2 No. 213-17

UL 121201

Non-incendive Electrical Equipment for Use in Class I

and II Division 2 and Class III Division 1 and 2 Hazardous

Locations

CAN/CSA –C22.2 No. 60079-7:16 Explosive atmospheres – Part 7: Equipment protection

by increased safety “e”

UL 60079-7:17 Explosive atmospheres – Part 7: Equipment protection

by increased safety “e”

CAN/CSA –C22.2 No. 60079-0:15 Explosive atmospheres – Part 0: Equipment – General

Requirements

UL 60079-0:13 Explosive atmospheres – Part 0: Equipment – General

Requirements

IEC 60079-0:2011 Explosive atmospheres – Part 0: Equipment – General

Requirements

IEC 60079-7:2017 Explosive atmospheres – Part 7: Equipment protection

by increased safety “e”

FB3000 - CSA Approval Information

CD9411K

Issued: January 19, 2021

CSA-4

WARNING

EXPLOSION HAZARD – CONNECT OR DISCONNECT ONLY IN A NON-HAZARDOUS AREA.

WARNING

EXPLOSION HAZARD – DO NOT REMOVE OR REPLACE WHILE CIRCUIT IS LIVE UNLESS THE AREA IS

FREE OF IGNITABLE CONCENTRATIONS.

WARNING

EXPLOSION HAZARD – DO NOT REMOVE OR REPLACE FUSE WHEN ENERGIZED.

DANGER

EXPLOSION HAZARD: BATTERIES MUST ONLY BE CHANGED IN AN AREA FREE OF IGNITABLE

CONCENTRATIONS

WARNING

DO NOT USE THE USB CONNECTOR UNLESS THE AREA IS KNOWN TO BE NON-HAZARDOUS.

FB3000 - CSA Approval Information

CD9411K

Issued: January 19, 2021

CSA-5

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

Contents iii

Contents

Section 1: Introduction 1

1.1 Safety Labels ........................................................................................................................ 2

1.2 Features ............................................................................................................................... 2

1.3 FB3000 RTU Chassis ............................................................................................................. 3

1.4 Central Processing Unit (CPU) ............................................................................................... 3

1.4.1 Memory ................................................................................................................... 3

1.5 I/O ........................................................................................................................................ 4

1.6 Power ................................................................................................................................... 5

1.7 Communications .................................................................................................................. 5

1.8 Software Tools ..................................................................................................................... 6

Section 2: Installation 7

2.1 Hazardous Locations ............................................................................................................ 7

2.2 Required Tools ..................................................................................................................... 7

2.3 Site Considerations .............................................................................................................. 8

2.3.1 Connecting Extension Chassis .................................................................................. 8

2.4 General Wiring Guidelines .................................................................................................. 10

2.5 Grounding .......................................................................................................................... 11

2.5.1 Chassis Ground Lug ................................................................................................ 11

2.5.2 Internal System Bus Ground ................................................................................... 12

2.5.3 Isolated Ground on 3MIX12 Module ....................................................................... 12

2.5.4 24V Loop Ground on 3MIX12 Module ..................................................................... 12

2.6 Mounting the Chassis ......................................................................................................... 14

2.6.1 Panel or Wall Mounting the Aluminum Enclosure ................................................... 15

2.7 Removing Battery Saver Tabs ............................................................................................. 17

2.8 Connecting Power .............................................................................................................. 17

2.8.1 Connecting External Power .................................................................................... 18

2.9 Removing the I/O Cover ..................................................................................................... 20

2.10 Connecting Communication Ports ........................................................................... 21

2.10.1 Connecting to COM1 ............................................................................................ 22

2.10.2 Connecting to COM2 ............................................................................................ 25

2.10.3 Connecting to COM3 ............................................................................................ 28

2.10.4 Connecting to COM4 ............................................................................................ 30

2.10.5 Ethernet and Micro USB Ports ............................................................................... 32

Section 3: I/O Configuration and Wiring 33

3.1 Analog Inputs ..................................................................................................................... 34

3.1.1 AI Wiring ................................................................................................................ 34

3.2 Analog Outputs .................................................................................................................. 36

3.2.1 AO Wiring .............................................................................................................. 37

3.3 Digital Inputs ...................................................................................................................... 38

3.3.1 DI Wiring ................................................................................................................ 39

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

iv Contents

3.4 Digital Outputs ................................................................................................................... 39

3.4.1 DO Wiring .............................................................................................................. 41

3.5 Pulse Inputs ........................................................................................................................ 45

3.5.1 PI Wiring ................................................................................................................ 46

Section 4: Operation 47

4.1 Powering Up/Powering Down the Device ........................................................................... 47

4.2 Establishing Communications ............................................................................................ 47

4.2.1 Communicating with the SCADA Host .................................................................... 47

4.2.2 Communicating with a Laptop Using a Serial Port ................................................... 48

4.2.3 Communicating with a Laptop Using Ethernet ........................................................ 49

Section 5: Service and Troubleshooting 51

5.1 Returning the Unit for Repairs ............................................................................................ 52

5.2 Interpreting the Status LEDs ............................................................................................... 53

5.3 Removing/Replacing the Power Module ............................................................................. 57

5.4 Removing/Replacing the SRAM Batteries ............................................................................ 59

5.5 Removing/Replacing the CPU Module (3CPU16)................................................................. 61

5.6 Removing/Replacing an I/O Module (3MIX12) .................................................................... 62

5.7 Removing/Replacing a Personality Module ......................................................................... 64

5.8 Upgrading System Firmware .............................................................................................. 65

5.9 Backing Up Historical Data and Your Configuration ............................................................ 66

5.10 Backing Up Your Solution ................................................................................................... 67

Index 69

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

Introduction 1

Section 1: Introduction

This section covers the following topics:

 Safety Labels

 Features

 FB3000 Chassis

 Central Processing Unit (CPU)

 I/O

 Power Options

 Communications

 Software Tools

The Emerson FB3000 Remote Terminal Unit (RTU) runs measurement and control applications

suitable for the oil and gas, water, wastewater, and other process industries. You can also purchase

the FB3000 as an I/O-only device (FBxRemote I/O™) where control runs in a separate host FB3000

RTU. This manual describes how to install and configure the FB3000 hardware.

For information on using the FBxConnect configuration software, see the online help that

accompanies FBxConnect.

Figure 1-1: FB3000 RTU

1

Chassis

2

Chassis Ground Lug

3

Power Supply Modules (2)

4

Ethernet Ports (on CPU module)

5

Micro A-B USB Connector (on CPU module)

6

Access Door (for battery replacement)

7

Personality Modules (residing in lower bay of slots 1 to 8)

8

CPU Module (slot 1 only) and I/O Modules (slots 2 to 8)

9

Connector to attach an additional chassis

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

2 Introduction

1.1 Safety Labels

This product may display safety label(s) to identify potential hazards. The same types of notices

appear within the documentation. Whenever you see an exclamation point (!) enclosed within a

triangle (shown to the left), consult the documentation for additional safety information about the

hazard and how to avoid it. The labels used are:

DANGER

MAY CAUSE DEATH

Observe all precautionary signs posted on the equipment.

Failure to do so may result in death or serious injury to personnel.

WARNING

DANGER TO PERSONNEL AND EQUIPMENT

Observed all precautionary signs posted on the equipment.

Failure to do so may result in injury to personnel or cause damage to the equipment.

CAUTION

MAY CAUSE INJURY TO PERSONNEL OR DAMAGE EQUIPMENT

Observed all precautionary signs posted on the equipment.

Failure to do so may result in injury to personnel or cause damage to the equipment.

SAFETY FIRST

General instructions and safety reminders.

1.2 Features

The FB3000 RTU includes the following key features:

 Operates in Class I Division 2 non-incendive and Ex ec Zone 2 non-sparking environments

when installed within a suitable enclosure

 Eight slot chassis may be extended with one, two, or three extension chassis.

 Supports I/O modules (holding I/O electronics/logic) and associated “personality” modules

(handling wiring and termination)

 Supports one or two power supply modules

 Obtains power from a DC power supply (10.5-30Vdc)

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

Introduction 3

 Supports serial communication options for RS-232 and RS-485

 Provides two Ethernet (10/100/1000Base-T) ports

 Provides Micro A-B USB connector to support DNP3 communications

1.3 FB3000 RTU Chassis

The FB3000 RTU has an eight-slot chassis. The CPU is always in slot one of the base chassis.

Figure 1-2: FB3000 RTU - 8 Slot Version (with/without slot covers)

Each slot includes an upper section and a lower section. The upper section holds the internal logic

for the module and the lower section holds the personality module used for wiring.

If your RTU is not fully populated with modules, you can fill the empty slots with slot covers to

protect the connectors from dust. These are installed/removed using the same screws used for

personality modules.

If you require more than seven I/O slots, you can optionally purchase one, two, or three extension

chassis to attach to the base chassis, allowing an additional 8, 16, or 24 I/O slots.

1.4 Central Processing Unit (CPU)

The RTU’s CPU is a Freescale (NXP) SoloX dual-core architecture processor with an Arm® Cortex®-

A9 core, and an Arm Cortex-M4 core. If your RTU includes multiple chassis, there is still only one

CPU module in the 1st slot of the first chassis; all other chassis hold only I/O modules.

There are two CPU versions available:

 3CPU16 – FB3000 RTU with full control and I/O capabilities.

 3IOCPU – FBxRemote I/O for I/O only with no control, no calculation support, and no

application support.

1.4.1 Memory

The RTU includes both static and flash memory.

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

4 Introduction

Table 1-1: Memory

Memory

Usage

256 MB Flash

Firmware image and report files; with 104 MB reserved for file system

and 128 MB available for database and history

16 MB SRAM

Historical data logs and configuration

1 GB DDR3 SDRAM

Firmware execution and execution memory

1.5 I/O

Other than slot 1 in the base chassis (which is reserved for the CPU), any slot can contain an I/O

module. Each 12-channel Mixed I/O module (labelled 3MIX12) supports the following

inputs/outputs

 Eight (8) input channels that you can individually configure using FBxConnect as analog inputs

(AI), digital inputs (DI), or pulse inputs (PI).

AIs are software-selectable as either 1VDC to-5VDC or 4 mA to 20 mA

 Two (2) analog output channels.

 Two (2) digital output channels.

As noted, the eight-slot RTU supports seven (7) I/O slots. Table 1-2 shows the maximum number of

I/O channels if all I/O slots are fully populated.

Table 1-2: Maximum I/O Count in Single Chassis

# of Slots

AI/DI/PI

AO

DO

7

56

14

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

Introduction 5

You can purchase one, two, or three extension chassis to connect to the base chassis, to add 8, 16,

or 24 additional I/O slots.

1.6 Power

You can power the RTU using an external DC input. The RTU includes two power supply modules.

Table 1-3: Power

Power Source

Usage

External DC Power Supply

10.5 Vdc to 30 Vdc external supply

1.7 Communications

The RTU includes four serial communication ports, two Ethernet ports, and one Micro A-B USB port.

The Ethernet ports reside on the top of the CPU module and use RJ-45-style 8P8C sockets. Each

port supports a maximum of six concurrent TCP connections (sockets). The Micro A-B USB port

resides on the front of the CPU module and supports DNP3 communication. The serial ports allow

communication using DNP3, Modbus slave and Modbus master protocols.

Table 1-4: Serial Ports

Port

Type

Use

COM1

 Serial communications

 Software-selectable for RS-232 or

RS-485 operation*

 4-wire

RS-232, or RS-485 communication to host or

other devices. 4-wire used with external radio.

COM2

 Serial communications

 Software-selectable for RS-232 or

RS-485 operation*

 4-wire

RS-232 or RS-485 communication to host or

other devices. 4-wire used with external radio.

COM3



Serial communications

 Isolated RS-485 operation

 2-wire

RS-485 communication to host or other devices

such as 4088B.

COM4



Serial communications

 Isolated RS-485 operation

 2-wire

RS-485 communication to host or other devices

such as 4088B.

*Under older standards RS-485 (4-wire) referred to as RS-422.

Note:

For an I/O

only CPU (3IOCPU) FBxConnect pass-through communication from a host requires

Ethernet communication; serial ports are only supported through a local connection.

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

6 Introduction

1.8 Software Tools

The FBxConnect™ configuration software provides a series of wizards that enables you to perform

configuration activities for the RTU. You connect a PC running the FBxConnect configuration

software to the RTU using one of the serial, Ethernet or USB ports. You can then:

 Set parameters within your application

 Configure I/O channels

 Specify the serial communication method for a port (RS-232 to RS-485) as needed

 Update system firmware

Optional FBxDesigner™ programming software lets you create custom applications for the RTU

using any of the five IEC61131 languages.

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

Installation 7

Section 2: Installation

This section covers the following topics:

 Hazardous Locations

 Required Tools

 Site Considerations

 General Wiring Guidelines

 Grounding

 Mounting the Chassis

 Removing the Battery Saver Tab

 Connecting Power

 Removing the I/O Cover

 Connecting Communications Ports

The RTU ships from the factory fully assembled.

2.1 Hazardous Locations

For North America the FB3000 has certifications for Class I Division 2 (Groups A, B, C & D) non-

incendive and non-hazardous locations only. For other world areas the FB3000-has ATEX and IEC Ex

certifications for Ex ec Zone 2 non-sparking installations and non-hazardous locations only.

All certifications are listed on the data plate located on the top of the device. Refer to the CSA

Approval Information document (CD9411A) for special information for Class I Division 2 and Ex ec

Zone 2 installations.

2.2 Required Tools

Certain tools and equipment are required for installing and servicing the RTU.

Table 2-1: Required Tools

Tool

Use

#2 Phillips screwdriver

Chassis ground lug, panel installation, removal of rear

panel.

¼” slotted blade screwdriver

Personality module removal

Magnets

Battery removal

Non-metallic tool

Battery removal

Laptop PC running Field Tools with

FBxConnect configuration software Software configuration

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

8 Installation

2.3 Site Considerations

The RTU must reside in an accessible location for configuration and service. Refer to the

dimensional drawings for information on the space required.

Figure 2-1: FB3000 Dimensions – 8 Slot (with/without DIN Rail mounting plate assembly)

1

No DIN mounting plate in this view.

Connecting Extension Chassis

The FB3000 supports up to 3 additional chassis. When connecting an extension chassis to the

“base” chassis (the chassis containing the CPU module), use only the connector on the right hand

side of the base chassis. The FB3000 base chassis cannot support an extension chassis using the

left-hand connector.

DANGER

When installing in a hazardous location, the installer must ensure the side connectors between

the chassis are fully engaged.

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

Installation 9

CAUTION

MAY CAUSE INJURY TO PERSONNEL OR DAMAGE EQUIPMENT

When mounting an FB3000 with one or more extension chassis in an enclosure, ensure that you

mount the racks in a left to right

horizontal direction (wall mount on DIN-rails)

inside the end user

system enclosure to allow for adequate heat dissipation.

Never

mount the racks in a

vertical

stacked direction.

Notes: If using multiple chassis, the length dimension increases by approximately 220 mm (8.7 in)

for each additional chassis, so:

 if using two chassis, overall length is approximately 465 mm (18.30 in)

 If using three chassis, overall length is approximately 685 mm (26.96 in)

 If using four chassis, overall length is approximately 905 mm (35.62 in)

1. Squeeze hard to remove connector covers on the two mating chassis. You may need to

use both hands.

Figure 2-2: Removing Chassis Connector Cover

Emerson FB3000 RTU Instruction Manual

D301851X012

April 2021

10 Installation

2. Press the two chassis together. If mounting on a DIN rail, slide both chassis onto the DIN

rail first to ensure proper alignment and place clamps/brackets at both ends of assembly

on DIN rail to ensure side connectors between chassis remain fully engaged. (See Section

2.6).

Figure 2-3: Pressing Chassis Together

2.4 General Wiring Guidelines

The RTU’s pluggable terminal blocks use compression-type terminals that accommodate wire

between 24 and 12 AWG depending on the connector or terminal block and the usage. Use 28 to

16 AWG wires on the 20 pin I/O connectors; use 20 to 12 AWG wires on the power connection.

CAUTION

All wires must be rated for a temperature of 90oC or higher.

CAUTION

Wires used for power

must

have a wire gauge between 20 and 12 AWG.

 When making a connection, insert the bare end of the wire (approx. 1/4" max) into the clamp

adjacent to the screw and secure the screw.

 To prevent shorts, ensure that no bare wire is exposed. You can also use crimp bootlace

ferrules (18 to 24 AWG for I/O; 18 to 20 AWG for power).

 Allow some slack in the wire while making terminal connections. Slack makes the wires more

manageable and helps minimize mechanical strain on the terminal blocks.

 Use twisted pair, shielded and insulated cable for communication and I/O wiring to minimize

signal errors caused by electromagnetic interference (EMI), radio frequency interference (RFI)

and transients. When using shielded cable, ground all shields at a suitable Instrument Earth

connection point. This prevents circulating ground current loops that can cause signal errors.

See the FB3000 product data sheet for information about applicable standards for EMI and RFI

emissions and susceptibility.

Page is loading ...

Remote Automation Solutions FB3000 Remote Terminal Unit (RTU) User manual

Remote Automation Solutions FB3000 Remote Terminal Unit (RTU) User manual

Related papers

Other documents