TSX07 manual.pdf

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General safety advice for users
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1 General
This manual is intended for personnel technically qualified to install, operate and maintain the
products which are described herein. It contains all the necessary information for correct use of
the products. However, for advanced use of our products please contact your nearest sales office
for additional information.
The contents of this manual are not contractual and cannot under any circumstance
extend or restrict contract warranty clauses.
2 Qualification of personnel
Only
qualified personnel
are authorized to install, operate or maintain the products. Any work
performed by a unqualified person or non-observance of the safety instructions in this document
or attached to the equipment may risk the safety of personnel and/or cause irreparable damage
to equipment. The following personnel may be regarded as being
"Qualified"
:
• those involved with application design. Design office personnel familiar with control system
safety concepts (for example, design engineers, etc),
• those involved with equipment installation. Individuals who are familiar with the installation,
connection and startup of control system equipment (for example installers or wiring technicians
working during the installation phase, technicians setting up the equipment, etc),
• those involved with operation. Personnel trained to operate and manage control system
equipment (for example, operators, etc),
• those performing preventive or corrective maintenance. Personnel who are trained and
experienced in the adjustment and repair of control system equipment (for example, installation
engineers, after sales service engineers, etc).
3 Warnings
Warnings serve to prevent specific risks encountered by personnel and/or equipment. They are
indicated in the documentation and on the products by different warning symbols, according to
the severity of the risk :
Danger
or
Caution or Attention
Indicates that not following instructions or ignoring the warning may cause
serious personal injury, death and/or serious damage to equipment.
Warning
or
Important
or
!
Indicates that not following a specific instruction may lead to minor injury and/or
damage to equipment.
Note
or
Comment
Highlights important information relating to the product, its operation or its
accompanying documentation.
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General safety advice for users
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4 Conformity of use
The products described in this manual
conform to the European Directives
(*) to which they
are subject (CE marking). However, they can only be used correctly in the context of the
applications for which they are intended (described in the various documents) and when
connected to approved third party products.
As a general rule, if all handling, transport and storage specifications are observed, and all
instructions for installation, operation and maintenance are followed, the products will be used
correctly, with no danger to personnel or equipment.
(*) DEMC and DLV Directives, concerning Electromagnetic Compatibility and Low Voltage.
5 Installing and setting up equipment
It is important to observe the following rules when installing and starting up equipment. In
addition, if the installation includes digital links, it is essential to follow the basic wiring rules given
in the user's guide,
reference TSX DG GND,
and manual
TSX DR NET,
part C.
• safety instructions must be followed meticulously. These instructions are in the documentation
or on the equipment being installed and set up.
• the type of equipment defines the way in which it should be installed :
- a flush-mountable device (for example, a process control terminal or a cell controller) must
be flush-mounted,
- a device which is to be built in (for example, PLC) must be placed in a cabinet or enclosure,
- the casing of a laptop or portable device (for example, a programming terminal or a notebook)
must remain closed,
• if the device is permanently connected, its electrical installation must include a device to isolate
it from the power supply and a circuit-breaker to protect it against overcurrents and isolation
faults. If this is not the case, the power socket must be grounded and be easily accessed.
In
all cases, the device must be connected to the protective mechanical ground PG using
green/yellow wires (NFC 15 100).
• low voltage circuits (even though they are low voltage) must be connected to the protective
ground so that dangerous voltages can be detected.
• before a device is powered up, its nominal voltage must be checked to ensure that it has been
adjusted to conform with the supply voltage.
• if the device is supplied with 24 or 48 VDC, the low voltage circuits must be protected. Only
use power supplies which conform to the standards currently in force.
• check that the supply voltages remain within the tolerance ranges defined in the technical
characteristics of the devices.
• all measures must be taken to ensure that any power return (immediate, warm or cold) does
not lead to a dangerous state which may risk personnel or the installation.
• emergency stop devices must remain effective in all the device's operating modes, even those
which are abnormal (for example, when a wire becomes disconnected). Resetting these
devices must not cause uncontrolled or improper restarts.
• cables which carry signals must be located where they do not cause interference with the
control system functions by capacitive, inductive or electromagnetic interference.
• control system equipment and their control devices must be installed in such a way as to
ensure that they are protected against unintentional operation.
• appropriate safety measures must be taken for the inputs and outputs, to prevent improper
states in the control system device, if no signal is received.
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General safety advice for users
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6 Equipment operation
The operational safety and availability of a device is its ability to avoid the appearance of faults
and to minimize their effects if they occur.
A system is said to be fail-safe if the appearance of faults
never
causes a dangerous situation.
A fault inside the control system is known as :
• passive, if it results in an open output circuit (no command is sent to the actuators).
• active, if it results in a closed output circuit (an command is sent to the actuators).
From the safety point of view, a given fault is dangerous or not depending on the type of command
given during normal operation. A passive fault is dangerous if the normal command is the
operation of an alarm. An active fault is dangerous if it maintains or activates an undesirable
command.
It is important to note the basic difference between the behavior of an electromechanical relay
and an electronic component (for example a transistor) :
• there is a high probability, approximately 90%, that the failure of a relay will cause an open
circuit (control circuit powered off).
• there is a 50% probability that the failure of a transistor will cause either an open circuit or a
closed circuit.
This is why it is important to correctly estimate the types and consequences of faults when
automating a system using electronic products such as PLCs, including when relay output
modules are used on PLCs.
The system designer must
use devices external to the PLC
to protect against active faults
inside the PLC, which are not indicated and are judged to be dangerous to the application. This
may require solutions from various different technologies such as mechanical, electromechanical,
pneumatic or hydraulic devices (for example, directly wiring a limit switch and emergency stop
switches to the coil of a movement control contactor).
To protect against dangerous faults which may occur on output circuits or preactuators, it is
sometimes beneficial to resort to general principles and use the large processing capacity of
PLCs, for example by using "inputs to check the correct execution of commands requested by
the program".
7 Electrical and thermal characteristics
Details of the electrical and thermal characteristics of devices are given in the associated
technical documents (installation manuals, service instructions).
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General safety advice for users
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8 Environmental conditions
Devices, such as TSX Nano PLCs, meet "TC" treatment (1) requirements. For installations in
industrial production workshops or in environments which correspond to "TH" treatment (2), these
devices should be installed in enclosures with minimum IP54 protection, stipulated by standards
IEC 664 and NF C 20 040.
TSX Nano PLCs, which themselves have IP20 protection, can therefore be installed without
enclosures in restricted-access locations which do not exceed pollution level 2 (control room with
no machines or dust-producing activities).
(1) "TC" treatment : all climate treatment.
(2) "TH" treatment : treatment for hot and humid environments.
9
Preventive or corrective maintenance
Availability
The availability of a system is its ability, in terms of its combined reliability, maintainability and
maintenance logistics, to be in a state to perform a required function, at a given moment and
within a defined time period.
Availability is therefore specific to each application, since it is a combination of :
• the architecture of the automatic system,
• the reliability and maintainability : intrinsic characteristics of the equipment (PLCs, sensors,
machine, etc),
• maintenance logistics : characteristic intrinsic to the user of the control system (software
structure, fault indication, process, on-site replacement parts, training of personnel).
Troubleshooting procedure
• control system equipment should only be repaired by qualified personnel (after sales service
engineer, or technician approved by AEG Schneider Automation). Only certified replacement
parts or components should be used.
• before performing any operation on equipment (for example opening an enclosure), always cut
the power supply off (disconnect the power plug or open the power isolation switch).
• before performing any "mechanical" operation on equipment on site, cut the power supply off
and mechanically lock any moving parts.
• before performing an operation on the PLC, modifying a connection, etc, check in the manual
whether this should be done with the power off or if it is possible while the device is powered
up. Meticulously follow the instructions given in the manual.
• on positive logic outputs or negative logic inputs, take all necessary precautions to prevent a
disconnected wire from coming into contact with the mechanical ground (risk of undesirable
command).
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4
A
Setting up
TSX Nano PLCs
Contents
Part A
Section
1 Introduction
1.1
1.2
The PLC in the control system structure
Discrete I/O TSX Nano PLCs
1.2-1 Presentation
1.2-2 Summary of catalog references (Discrete I/O)
1.2-3 Main functions of TSX Nano PLCs
Program execution
1.3-1 Normal (cyclical) operation
1.3-2 Periodic operation
The I/O extension
I/O addressing
Special I/O
Additional information about the I/O
1.7-1 Programmable input filters
1.7-2 Protected transistor outputs on TSX 07 •• •• 12
Potentiometers
Status display of the PLC and the I/O
Page
1/1
1/1
1/2
1/2
1/5
1/6
1/9
1/9
1/10
1/12
1/13
1/14
1/16
1/16
1/18
1/19
1/20
1/22
1/24
1/24
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10 Peer PLCs
1.11 TSX Nano PLCs with 1 integrated analog input
1.11-1 Presentation
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A/1

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