Proface LT4300M - 5.7 Modular HMI + Control" - Manual (Page 26)

LT System General Implementation Rules
26
Introduction
Before You Begin
The LT controller and related software is used to control various industrial processes. The type or
model of automation equipment suitable for each application will vary depending on factors such
as the control function required, degree of protection required, production methods, unusual
conditions, government regulations, and so on, in some applications, more than one processor
may be required, as when backup redundancy is needed.
Only the user can be aware of all the conditions and factors present during the setup, operation,
and maintenance of the machine; therefore, only the user can determine the automation
equipment and the related safeties and interlocks that can be properly used. When selecting
automation and control equipment and related software for a particular application, the user should
refer to the applicable local and national standards and regulations.
In some applications, additional operator protection such as point-of-operation guarding must be
provided. This is necessary if the operator’s hands and other parts of the body are free to enter
pinch points or other hazardous areas and serious injury can occur. The LT controller and related
software products alone cannot protect an operator from injury. For this reason, this equipment
cannot be substituted for or take the place of point-of-operation protection. Ensure that appropriate
safeties and mechanical/electrical interlocks related to point of operation protection have been
installed and are operational before placing the equipment into service. All interlocks and safeties
related to point-of-operation protection must be coordinated with the related automation equipment
and software programming.
WARNING
UNGUARDED MACHINERY CAN CAUSE SERIOUS INJURY
 Do not use this controller and related software on equipment that does not have point-of-
operation protection.
 Do not reach into machinery during operation.
Failure to follow these instructions can result in death, serious injury, or equipment
damage.
WARNING
UNINTENDED EQUIPMENT OPERATION

Use appropriate safety interlocks where personnel and/or equipment hazards exist.
 Install and operate this equipment in an enclosure appropriately rated for its intended
environment.
 Use the sensor and actuator power supplies only for supplying power to the sensors or
actuators connected to the module.
 Power line and output circuits must be wired and fused in compliance with local and national
regulatory requirements for the rated current and voltage of the particular equipment.
 Do not use this equipment in safety-critical machine functions.
 Do not disassemble, repair, or modify this equipment.
 Do not connect any wiring to unused connections, or to connections designated as Not
Connected (N.C.).
Failure to follow these instructions can result in death, serious injury, or equipment
damage.