General Safety Summary
iv VX4801 Programmable Digital I/O Module
Safety Terms and SymbolsThese terms may appear in this manual:
WARNING. Warning statements identify conditions or practices that could result
in injury or loss of life.
CAUTION. Caution statements identify conditions or practices that could result in
damage to this product or other property.
These terms may appear on the product:
DANGER indicates an injury hazard immediately accessible as you read the
marking.
WARNING indicates an injury hazard not immediately accessible as you read the
marking.
CAUTION indicates a hazard to property including the product.
The following symbols may appear on the product:
Protective Ground
(Earth) Terminal ATTENTION
Refer to Manual Double
Insulated
DANGER
High Voltage
Certifications and CompliancesOvervoltage categories are defined as follows:
CAT III: Distribution level mains, fixed installation
CAT II: Local level mains, appliances, portable equipment
CAT I: Signal level, special equipment or parts of equipment, telecommunica-
tion, electronics