Rockwell Automation PowerFlex 750 ATEX User Manual

PowerFlex 750-Series ATEX

Option Module

Catalog Number 20-750-ATEX

User Manual

Original Instructions

PowerFlex 750-Series ATEX Option Module User Manual

Important User Information

Read this document and the documents listed in the additional resources section about installation, configuration, and operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.

Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to be carried out by suitably trained personnel in accordance with applicable code of practice.

If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

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.

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.

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.

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

Labels may also be on or inside the equipment to provide specific precautions.

SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous voltage may be present.

BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may reach dangerous temperatures.

ARC FLASH HAZARD: Labels may be on or inside the equipment, for example, a motor control center, to alert people to potential Arc Flash. Arc Flash will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL Regulatory requirements for safe work practices and for Personal Protective Equipment (PPE).

2	Rockwell Automation Publication 750-UM003E-EN-P - August 2020

	Table of Contents
	Preface
	Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. 5
	Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	5
	Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	6
	Chapter 1
Safety Concepts	ATEX Directive 2014/34/EU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	7
	Motor Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	8
	About the PowerFlex 750-Series ATEX Option Module . . . . . . . . . .	9
	Using the PowerFlex 750-Series ATEX Option Module
	with an
	11-series I/O Option Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
	Catalog Numbers for ATEX and 11-Series I/O Option
	Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
	Catalog Numbers for Spare Terminal Plugs . . . . . . . . . . . . . . . . . .	10
	ATEX System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	10
	ATEX Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
	Thermostat Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
	Positive Temperature Coefficient (PTC) Trip . . . . . . . . . . . . . . .	11
	Safe State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
	Hardware Fault Tolerance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	12
	Safety Reaction Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
	Contact Information If Safety Option Failure Occurs . . . . . . . . . . . .	13
	Chapter 2
Installation and Wiring	Perform a Risk Assessment of the Operational Environment . . . . . .	15
	Perform a Safety Analysis of the Motor. . . . . . . . . . . . . . . . . . . . . . . . . .	16
	Remove Power to the System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
	Access the Control Pod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	16
	Configure the Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
	S1 Switch Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	18
	Safety Enable Jumper Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . .	19
	ATEX Option Module and 11-Series I/O Option Module
	without a Safety Option Module. . . . . . . . . . . . . . . . . . . . . . . . . . . .	20
	ATEX Option Module and 11-Series I/O Option Module w
	ith a Safety Option Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	21
	Assemble the ATEX and 11-Series I/O Option Modules . . . . .	23
	Connect the Thermal Sensor Wires. . . . . . . . . . . . . . . . . . . . . . . . . . . . .	24
	Cabling Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	24
	Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	25
	Install the ATEX Option Module Assembly. . . . . . . . . . . . . . . . . . . . .	25
	PowerFlex 750-Series Safe Torque Off Option Wiring . . . . . . . . . . .	27
	Safe Speed Monitor Option Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . .	28
	Integrated Safety - Safe Torque Off Option Module. . . . . . . . . . . . . .	29
	PowerFlex 755/755T Integrated Safety Functions Option M
	odule. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	30

Rockwell Automation Publication 750-UM003E-EN-P - August 2020

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Table of Contents
	Reset the Drive after an SSM Fault Detection. . . . . . . . . . . . . . . . . . . .	30
	Interface Without a Safety Option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	30
	Chapter 3
Verify Operation	Description of Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	31
	Motors with Thermostatic Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . .	32
	Functional Proof Testing for Systems with Thermostat
	Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	32
	Motors with Positive Temperature Coefficient (PTC) Devices. . . .	33
	Functional Proof Testing for Systems with PTC Devices. . . . . .	33
	Functional Proof Testing without a Test Fixture. . . . . . . . . . . . . . . . .	34
	Chapter 4
ATEX Monitoring	Parameter 41 [ATEX Sts]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	37
	ATEX Fault Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	38
	ATEX Configuration Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	38
	Restart the Drive after an Over-temperature Fault . . . . . . . . . . . . . . .	39
	Appendix A
Specifications and	General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	41
Certifications	11-Series I/O Option Module Terminal Block Specifications . . . . .	41
	Safety Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	42
	Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	42
	Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	43
	Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	45

4	Rockwell Automation Publication 750-UM003E-EN-P - August 2020

Preface

Summary of Changes

This manual contains new and updated information as indicated in the following table.

Topic	Page
Updated the Introduction to this manual in the Preface.	5
Updated and added model numbers to the About the PowerFlex 750-Series ATEX Option Module	9
introduction in Chapter 1.
Added Using the PowerFlex 750-Series ATEX Option Module with an 11-series I/O Option Module, to	9
Chapter 1.
Added Remove Power to the System section.	16
Updated Access the Control Pod instructions.	16
Added Integrated Safety - Safe Torque Off (catalog number 20-750-S3) and Integrated Safety Functions	18
(catalog number 20-750-S4 to Configure the Hardware section of Chapter 2.
Added Integrated Safety - Safe Torque Off (catalog number 20-750-S3) and Integrated Safety Functions	21
(catalog number 20-750-S4 to ATEX Option Module and 11-Series I/O Option Module with a Safety
Option Module section of Chapter 2.
Changed ATTENTION statement in Install the ATEX Option Module Assembly to match the Remove	25
Power to the System statement in the Installation and Wiring chapter.
Added Integrated Safety - Safe Torque Off Option Module section to Chapter 2.	29
Added PowerFlex 755/755T Integrated Safety Functions Option Module section to Chapter 2.	30
Changed ATTENTION statement in Functional Proof Testing without a Test Fixture section to match the	34
Remove Power to the System statement in the Installation and Wiring chapter.
Revised the title of PFD and PFH for 20-year Proof Test Interval for All PowerFlex 753/755 and	42
PowerFlex 755T Drives table to show that the safety data applies to all PowerFlex 753/755 and
PowerFlex 755T drives.
Added an Important statement regarding protection for products with a safety function installed.	43

Introduction

Use this manual if you are responsible for designing, installing, configuring, or troubleshooting applications that use the PowerFlex 750-Series ATEX option module. The 20-750-ATEX option module applies to the following PowerFlex 750-Series drives:

•PowerFlex 755TL low harmonic, non-regenerative drives

•PowerFlex 755TR regenerative drives

•PowerFlex 755TM drive systems with regenerative bus-supplies and common-bus inverters

•PowerFlex 755 AC drives

•PowerFlex 753 AC drives

Throughout this manual, PowerFlex 755T drive products are used to refer to PowerFlex 755TL drives, PowerFlex 755TR drives, and PowerFlex 755TM drive systems.

IMPORTANT Read and understand this user manual before you begin to design and install your ATEX system.

Rockwell Automation Publication 750-UM003E-EN-P - August 2020

5

Preface

Additional Resources

These documents contain additional information concerning related products from Rockwell Automation.

		Resource	Description
		PowerFlex 750-Series Products with TotalFORCE™ Control Installation Instructions, publication 750-IN100	Provides the basic steps to install PowerFlex 755TL low harmonic
			drives, PowerFlex 755TR regenerative drives, and PowerFlex
			755TM drive systems.
		PowerFlex 755TM IP00 Open Type Kits Installation Instructions, publication 750-IN101	Provides instructions to install IP00 Open Type kits in user-
			supplied enclosures.
		PowerFlex 750-Series AC Drives Installation Instructions, publication 750-IN001	Provides the basic steps to install PowerFlex 750-Series AC drives.
		PowerFlex Drives with TotalFORCE Control Programming Manual, publication 750-PM100	Provides detailed information on:
		PowerFlex 750-Series AC Drives Programming Manual, publication 750-PM001	• I/O, control, and feedback options
			•	Parameters and programming
			• Faults, alarms, and troubleshooting
		PowerFlex 750-Series AC Drives Technical Data, publication 750-TD001	Provides detailed information on:
			• Drive and bus supply specifications
		PowerFlex 750-Series Products with TotalFORCE Control Technical Data, publication 750-TD100
			•	Option specifications
			• Fuse and circuit breaker ratings
		PowerFlex 755TM IP00 Open Type Kits Technical Data, publication 750-TD101	Provides detailed information on:
			•	Kit selection
			• Kit ratings and specifications
			•	Option specifications
		PowerFlex 750-Series Safe Speed Monitor Option Module Safety Reference Manual, publication 750-RM001	Provides information for the Safe Speed Monitor option (Cat. No.
			20-750-S1) that can be used as a component in a safety control
			system.
		PowerFlex 750-Series Safe Torque Off User Manual, publication 750-UM002	Provides information for the Safe Torque Off option (Cat. No.
			20-750-S) that can be used as a component in a safety control
			system.
		PowerFlex 755/755T Integrated Safety - Safe Torque Off Option Module User Manual, publication 750-UM004	Provides information for the Integrated Safety - Safe Torque Off
			Option Module (Cat. No. 20-750-S3) that can be used as a
			component in a safety control system.
		PowerFlex 755/755T Integrated Safety Functions Option Module, publication 750-UM005	Provides information for the Integrated Safety Functions Option
			Module (Cat. No. 20-750-S4) that can be used as a component in a
			safety control system.
		Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1	Provides general guidelines for installing a Rockwell Automation
			industrial system.
		Product Certifications website, http://rok.auto/certifications	Provides declarations of conformity, certificates, and other
			certification details.

You can view or download publications at rok.auto/literature.

6	Rockwell Automation Publication 750-UM003E-EN-P - August 2020

Chapter 1

Safety Concepts

Topic	Page
ATEX Directive 2014/34/EU	7
Motor Requirements	8
ATEX System	10
ATEX Function	11
Safe State	12
Hardware Fault Tolerance	12
Safety Reaction Time	13
Contact Information If Safety Option Failure Occurs	13

The PowerFlex® ATEX option module that is installed in a PowerFlex 750-Series drive or PowerFlex 755T drive products and equipped with an 11-Series I/O option module provides an ATEX-compliant safety function. This ATEXcompliant function provides a safe turn-off for equipment that is installed in a potentially explosive atmosphere according to 2014/34/EU.

ATEX Directive 2014/34/EU The PowerFlex 750-Series drives and PowerFlex 755T drive products, together with the ATEX and 11-Series I/O option modules, are compliant safety devices

under the ATEX directive 2014/34/EU, and satisfy requirements for use in Group II, Category 2, (GD) applications with ATEX approved motors as described here:

•Group II – The motor is installed in a potentially explosive atmosphere that is not in a mine.

•Category 2 – The motor is likely to be exposed to an explosive atmosphere. A high level of protection is required.

•GD – The explosive atmosphere consists of a mixture of (G) gas vapors and (D) dust that can cause an explosion.

Certification of the drive for the ATEX group and category on its nameplate is based on installation, operation, and maintenance according to these items:

•This user manual

•The requirements in the drive user manual and installation instructions

•The instruction manual for the motor

Rockwell Automation Publication 750-UM003E-EN-P - August 2020

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Chapter 1

Motor Requirements

ATTENTION: Follow all procedures in the standard installation and user manuals for the ATEX-certified drive with an ATEX-certified motor. You must also follow all additional instructions in this PowerFlex 750-Series ATEX Option Module User Manual. Equipment damage and/or personal injury can result if all additional instructions in this user manual are not followed.

•The motor must be manufactured under the guidelines of the ATEX directive 2014/34/EU. The motor must be installed, operated, and maintained according to the instructions of the motor manufacturer.

•Only motors with nameplates that are marked for use on an inverter power source, and labeled for specific hazardous areas, can be used in hazardous areas on inverter (variable frequency) power.

•When the motor is rated ATEX Group II, Category 2 for use in gas environments (category 2G), the motor must be of flameproof construction, EEx d (according to EN 50018) or Ex d (according to EN 60079-1 or IEC 60079-1). Group II motors are marked with a temperature or a temperature code.

•When the motor is rated ATEX Group II, Category 2 for use in dust environments (category 2D), you must protect the motor with an enclosure (according to EN 50281-1-1, or according to

IEC 61241-1: Ex tD). Group II motors are marked with a temperature.

•The motor over-temperature signal is supplied to the drive by one of two methods:

–A normally closed contact (open during over temperature condition) compatible with the digital (logic) input circuitry of the drive. If multiple sensors are required in the motor, the connection at the drive must be the result of all required contacts that are wired in series.

–A positive temperature coefficient (PTC) type of thermal sensor. See Appendix A for specifications.

•See all product markings for additional cautions.

•Typical motor markings are contained on a motor certification nameplate similar to the sample here.

FLAMEPROOF Exd ENCLOSURE

EExd I/IIB			Tamb		C to			C
II 2 G/D					0035
I M2 Sira				ATEX

MFG. BY ROCKWELL AUTOMATION

8	Rockwell Automation Publication 750-UM003E-EN-P - August 2020

Chapter 1

About the PowerFlex

750-Series ATEX Option

Module

The PowerFlex ATEX option module and the 11-Series I/O option module for PowerFlex 750-Series AC drives and PowerFlex 755T drive products are safety system components of the equipment and protective systems. The option modules are intended for equipment that is used in potentially explosive atmospheres (ATEX). Perform a risk assessment and safety analysis of the operating atmosphere and the ATEX system components before you begin this ATEX installation:

•PowerFlex 750-Series drive

•PowerFlex 755TL low harmonic drives (1)

•PowerFlex 755TR regenerative drives (1)

•PowerFlex 755TM drive systems (1)

•Motor

•ATEX option module

•11-Series I/O option module

Using the PowerFlex 750-Series ATEX Option Module with an 11-series I/O Option Module

The ATEX option module with the 11-Series I/O option module enables a PowerFlex 750-Series drive and PowerFlex 755T drive products to be used in ATEX installations. The ATEX option module helps to reduce the risk of explosion due to an over-temperature condition in an ATEX approved motor. In an ATEX installation, the motor is installed in a potentially explosive atmosphere, while the drive is installed outside of the potentially explosive atmosphere. See Figure 1.

WARNING: Risk of Explosion.

Do not install the PowerFlex 750-Series drive or PowerFlex 755T drive products in a potentially explosive atmosphere.

A drive that is installed in a potentially explosive atmosphere can cause an explosion.

(1)Throughout this manual, the PowerFlex 755TL low harmonic drives, PowerFlex 755TR regenerative drives, and PowerFlex 755TM drive systems are also referred to as PowerFlex 755T drive products.

Rockwell Automation Publication 750-UM003E-EN-P - August 2020

9

Chapter 1

Catalog Numbers for ATEX and 11-Series I/O Option Modules

This table lists the catalog numbers for the ATEX option module and the compatible 11-Series I/O option modules.

ATEX Option Module Cat. No.	11-Series I/O Option Module	Description
	Cat. No.
	20-750-1132D-2R	115V AC digital input
		Two relay outputs, digital
20-750-ATEX	20-750-1133C-1R2T	24V DC digital input
		Two transistor outputs, one relay output,
		digital
	20-750-1132C-2R	24V DC digital input
		Two relay outputs, digital

Catalog Numbers for Spare Terminal Plugs

This table contains the catalog numbers for the 11-Series I/O option module spare terminal plug kits.

Cat. No.	Spare Terminal Plug Kit
SK-R1-SCRWTB-EIO	Screw-down terminal plugs spare kit (set of three)
SK-R1-SPRGTB-EIO	Spring-clamp terminal plugs spare kit (set of three)

ATEX System

The overall system includes an ATEX certified motor that is installed in a potentially explosive atmosphere. The motor is equipped with a thermal sensor that is connected to the ATEX option input. Do not install the drive in a potentially explosive atmosphere. See Figure 1.

WARNING: Risk of Explosion.

Do not install the PowerFlex 750-Series drive or PowerFlex 755T drive products in a potentially explosive atmosphere.

A drive that is installed in a potentially explosive atmosphere can cause an explosion.

10	Rockwell Automation Publication 750-UM003E-EN-P - August 2020

Chapter 1

Figure 1 - Basic ATEX Application

PowerFlex 750-Series Drive or PowerFlex 755T drive products (750-Series drive shown)

Potentially Explosive Atmosphere

ATEX Certified Motor

Power to the Motor

Thermal Sensor Input to the Drive

ATEX Function

The ATEX option module monitors the thermal sensor in the motor. When the thermal sensor reaches its trip point, the drive initiates a Safe Torque Off function and removes torque-producing power from the motor. The ATEX safety function has a safety integration level (SIL) capability limit of 1 according to IEC 61508.

The PowerFlex 750-Series ATEX option module can be configured to support ATEX certified motors that are equipped with either a thermostat or a PTC-type thermal sensor.

ATTENTION: Risk of electric shock. If a motor insulation fault occurs, high voltage can be present at the ATEX terminal block and wiring. Be sure that all drive covers are installed when power is applied to the drive.

Thermostat Trip

When the circuit is configured to trip with a thermostat, the ATEX option module supports a normally closed, dry-contact thermostat. The safe-off function initiates when the ATEX option module detects that the contact is open. This trip can be the result of a broken wire, or an over-temperature condition in the motor.

Positive Temperature Coefficient (PTC) Trip

When the circuit is configured to trip with a PTC-type thermal sensor, the ATEX option module supports sensors with characteristics according to DIN 44081/DIN 440. The ‘Mark A’ measuring circuit on the ATEX option

Rockwell Automation Publication 750-UM003E-EN-P - August 2020

11

Chapter 1

Field wiring to thermal sensor. See Connect the Thermal Sensor Wires on page 24.

module is designed in accordance to IEC 60947-8 or EN 60947-8. This circuit trips when the motor temperature has reached its trip point, or an open-wire/ short-circuit condition is detected in the sensor circuit.

Loss of voltage to the measuring circuit also initiates the safe-off function. The ATEX option module internally sources this voltage.

Figure 2 - ATEX Circuitry

Safety configuration switch to configure the	Terminals EnC and EnNO must be wired correctly
safety path for use with a safety option. See	when a safety option is present in the drive. See the
Configure the Hardware on page 18.	important statements on page 27 and page 28.

High Voltage	Isolation	Safe Low Voltage
Possible
				EnC
				Relay Driver
ATEX+	Thermal		Safety	EnNO
	Sensor Type	Latch	Configuration	Or
ATEX–	Switch		Switch	Safe Shutdown
			Reset Signal	Signal

ATEX trip signals pass through an isolation barrier to protect the drive in a motor insulation fault. See ATEX Monitoring on page 37.

Thermal sensor-type switch selects between PTC and thermostatictype thermal sensors. See S1 Switch Location on page 18.

An ATEX trip latches the drive into a safe state until a reset sequence takes place. See Restart the Drive after an Over-temperature Fault on page 39.

For installations that do not have the Safe Torque Off or Safe Speed Monitor safety options present, the ATEX safety function uses the safety signal on the backplane. See Interface Without a Safety Option on page 30.

Safe State

The safe state includes all operation that occurs outside of the other monitoring and stopping behavior that is defined as part of the ATEX option module. The ATEX safety function, as provided by the ATEX option module, places the drive in a safe state by removing the power from the gate firing circuits of the output power devices (IGBTs).

Hardware Fault Tolerance	Hardware fault tolerance is the minimum number of faults that can cause a loss of
	the safety function as defined by EN 61800-5-2 and IEC 61508 part 2. The
	overall ATEX function has a hardware fault tolerance of zero.
	IMPORTANT If one fault occurs in the safety path, the safety function can become
	compromised.

12	Rockwell Automation Publication 750-UM003E-EN-P - August 2020

Chapter 1

Safety Reaction Time

The safety reaction time is the amount of time from a safety-related event as input to the system until the system is in the safe state.

The safety reaction time from an input signal trigger to the initiation of the ATEX safety function.

Table 1 - Safety Reaction Time

Drive

Safety Reaction Time

PowerFlex 753 drives

PowerFlex 755 drives

30 ms (max)

PowerFlex 755TL low harmonic drives PowerFlex 755TR regenerative drives PowerFlex 755TM drive systems

Contact Information If

Safety Option Failure

Occurs

If you experience a failure with any safety-certified device, contact your local Allen-Bradley distributor to do the following:

•Return the device to Rockwell Automation so the failure is appropriately logged for the catalog number that is affected and a record is made of the failure.

•Request a failure analysis (if necessary) to determine the probable cause of the failure.

Rockwell Automation Publication 750-UM003E-EN-P - August 2020

13

Chapter 1

Notes:

14	Rockwell Automation Publication 750-UM003E-EN-P - August 2020

Chapter 2

Installation and Wiring

Perform a Risk Assessment

of the Operational

Environment

Topic	Page
Perform a Risk Assessment of the Operational Environment	15
Perform a Safety Analysis of the Motor	16
Remove Power to the System	16
Access the Control Pod	16
Configure the Hardware	18
Connect the Thermal Sensor Wires	24
Install the ATEX Option Module Assembly	25
PowerFlex 750-Series Safe Torque Off Option Wiring	27
Safe Speed Monitor Option Wiring	28
Integrated Safety - Safe Torque Off Option Module	29
PowerFlex 755/755T Integrated Safety Functions Option	30
Module
Reset the Drive after an SSM Fault Detection	30
Interface Without a Safety Option	30

You must follow the installation steps that are described in this installation and wiring section. The PowerFlex® 750-Series ATEX option module with an 11-Series I/O module is part of an ATEX safety control system.

ATTENTION: Only qualified personnel familiar with adjustable frequency AC drives and associated machinery can plan or implement the installation, startup, and subsequent maintenance of the system. Failure to comply can result in personal injury and/or equipment damage.

ATTENTION: The following information is a guide for proper installation. Rockwell Automation does not assume responsibility for the compliance or the noncompliance to any code, national, local, or otherwise, for the proper installation of this equipment. Personal injury and/or equipment damage can occur if codes are ignored during installation.

Before you begin the installation, perform a risk assessment to compare the ATEX option specifications with the potentially explosive atmosphere where you want to install the system. See Safety Concepts on page 7.

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