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.
WA RN I NG : 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 3
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
Specifications and
Certifications
Appendix A
General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
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.
Top ic Pag e
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
introduction in Chapter 1.
Added Using the PowerFlex 750-Series ATEX Option Module with an 11-series I/O Option Module, to
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
(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
(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
Power to the System statement in the Installation and Wiring chapter.
Added Integrated Safety - Safe Torque Off Option Module sec tion 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
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
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
9
9
18
21
25
34
42
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
PowerFlex 755TM IP00 Open Type Kits Installation Instructions, publication 750-IN101 Provides instructions to i nstall IP00 Open Type kits in user-
PowerFlex 750-Series AC Drives Installation Instructions, publication 750-IN001
PowerFlex Drives with TotalFORCE Control Programming Manual, publication 750-PM100
PowerFlex 750-Series AC Drives Programming Manual, publication 750-PM001
PowerFlex 750-Series AC Drives Technical Data, publication 750-TD001 Provides detailed information on:
PowerFlex 750-Series Products with TotalFORCE Control Technical Data, publication 750-TD100
PowerFlex 755TM IP00 Open Type Kits Technical Data, publication 750-TD101 Provides detailed information on:
PowerFlex 750-Series Safe Speed Monitor Option Module Safety Reference Manual, publication 750-RM001 Provides information for the Safe Speed Monitor option (Cat. No.
PowerFlex 750-Series Safe Torque Off User Manual, publication 750-UM002 Provides information for the Safe Torque Off option (Cat. No.
PowerFlex 755/755T Integrated Safety - Safe Torque Off Option Module User Manual, publication 750-UM004
PowerFlex 755/755T Integrated Safety Functions Option Module, publication 750-UM005 Provides information for the Integrated Safety Functions Option
Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1 Provides general guidelines for installing a Rockwell Automation
Product Certifications website, http://rok.auto/certifications
Provides declarations of conformity, certificates, and other
Provides the basic steps to install PowerFlex 750-Series AC drives.
drives, PowerFlex 755TR regenerative drives, and PowerFlex
755TM drive systems.
supplied enclosures.
Provides detailed information on:
• I/O, control, and feedback options
• Parameters and programming
• Faults, alarms, and troubleshooting
• Drive and bus supply specifications
• Option specifications
• Fuse and circuit breaker ratings
•Kit selection
• Kit ratings and specifications
• Option specifications
20-750-S1) that can be used as a component in a safety control
system.
20-750-S) that can be used as a component in a safety control
system.
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.
Module (Cat. No. 20-750-S4) that can be used as a component in a
safety control system.
industrial system.
certification details.
You can view or download publications at rok.auto/literature
6 Rockwell Automation Publication 750-UM003E-EN-P - August 2020
.
Safety Concepts
Top ic Pag e
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
Chapter 1
ATEX Directive 2014/34/EU
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.
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 7
Chapter 1
ATT EN TI ON : 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.
Motor Requirements
• 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
I M2 Sira ATEX
MFG. BY ROCKWELL AUTOMATION
8 Rockwell Automation Publication 750-UM003E-EN-P - August 2020
0035
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
ATE X i ns ta lla ti on :
• PowerFlex 750-Series drive
• PowerFlex 755TL low harmonic drives
• PowerFlex 755TR regenerative drives
• PowerFlex 755TM drive systems
• Motor
•ATEX option module
• 11-Series I/O option module
(1)
(1)
(1)
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 System
ATEX Option Module Cat. No. 11-Series I/O Option Module
Cat. No.
20-750-1132D-2R 115V AC digital input
20-750-1133C-1R2T 24V DC digital input
20-750-ATEX
20-750-1132C-2R 24V DC digital input
Description
Two relay outputs, digital
Two transistor outputs, one relay output,
digital
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)
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
PowerFlex 750-Series Drive or PowerFlex 755T drive products (750-Series drive shown)
Power to the Motor
Thermal Sensor Input to the Drive
Poten tially Expl osive Atmosp here
ATEX Certified Motor
Figure 1 - Basic ATEX Application
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.
ATEX Function
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.
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
ATT EN TI ON : 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.
Rockwell Automation Publication 750-UM003E-EN-P - August 2020 11
Chapter 1
ATEX+
ATEX–
High Voltage
Possible
Isolation Safe Low Voltage
EnC
EnNOThermal
Sensor Type
Switch
Safety
Configuration
Switch
Latch
Relay Driver
Safe Shutdown
Signal
Reset Signal
Or
Field wiring to thermal sensor.
See Connect the Thermal
Sensor Wires on page 24.
Safety configuration switch to configure the
safety path for use with a safety option. See
Configure the Hardware on page 18.
Terminals EnC and EnNO must be wired correctly
when a safety option is present in the drive. See the
important statements on page 27 and page 28.
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 pa ge 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.
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
Safe State
Hardware Fault Tolerance
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 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
Contact Information If Safety Option Failure Occurs
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
ATE X s af et y fun ct ion .
Table 1 - Safety Reaction Time
Drive Safety Reaction Time
PowerFlex 753 drives
PowerFlex 755 drives
PowerFlex 755TL low harmonic drives
PowerFlex 755TR regenerative drives
PowerFlex 755TM drive systems
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.
30 ms (max)
Rockwell Automation Publication 750-UM003E-EN-P - August 2020 13
Chapter 1
Notes:
14 Rockwell Automation Publication 750-UM003E-EN-P - August 2020
Installation and Wiring
Top ic P age
Perform a Risk Assessment of the Operational Environment 15
Perform a Safety Analysis of the Motor 16
Remove Power to the System 16
Access t he 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
Module
Reset the Drive after an SSM Fault Detection 30
Interface Without a Safety Option 30
Chapter 2
30
Perform a Risk Assessment of the Operational Environment
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.
ATT EN TI ON : 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.
ATT EN TI ON : 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.
Rockwell Automation Publication 750-UM003E-EN-P - August 2020 15
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