Omron CS1W-DRM21, CJ1W-DRM21 Intended Audience, General Precautions, Safety Precautions

Intended Audience 1

1 Intended Audience

This manual is intended for the following personnel, who must also have knowledge of electrical systems (an electrical engineer or the equivalent).

• Personnel in charge of installing FA systems.

• Personnel in charge of designing FA systems.

• Personnel in charge of managing FA systems and facilities.

2	General Precautions
		The user must operate the product according to the performance specifica-
		tions described in the operation manuals.
		Before using the product under conditions which are not described in the
		manual or applying the product to nuclear control systems, railroad systems,
		aviation systems, vehicles, combustion systems, medical equipment, amuse-
		ment machines, safety equipment, and other systems, machines, and equip-
		ment that may have a serious influence on lives and property if used
		improperly, consult your OMRON representative.
		Make sure that the ratings and performance characteristics of the product are
		sufficient for the systems, machines, and equipment, and be sure to provide
		the systems, machines, and equipment with double safety mechanisms.
		This manual provides information for installing and operating the DeviceNet
		Unit. Be sure to read this manual before operation and keep this manual close
		at hand for reference during operation.
	!WARNING	It is extremely important that a PC and all PC Units be used for the specified
		purpose and under the specified conditions, especially in applications that can
		directly or indirectly affect human life. You must consult with your OMRON
		representative before applying a PC System to the above mentioned applica-
		tions.
3	Safety Precautions

Never attempt to disassemble a Unit or touch the inside of Unit while power is being supplied. Doing so may result in serious electrical shock or electrocu-

!WARNINGtion.

Provide safety measures in external circuits, i.e., not in the Programmable Controller (CPU Unit including associated Units; referred to as “PC”), in order to ensure safety in the system if an abnormality occurs due to malfunction of the PC or another external factor affecting the PC operation. Not doing so may result in serious accidents.

• Emergency stop circuits, interlock circuits, limit circuits, and similar safety measures must be provided in external control circuits.

• The PC will turn OFF all outputs when its self-diagnosis function detects any error or when a severe failure alarm (FALS) instruction is executed. As a countermeasure for such errors, external safety measures must be provided to ensure safety in the system.

• The PC outputs may remain ON or OFF due to deposition or burning of the output relays or destruction of the output transistors. As a counter-

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