Rockwell Automation 1771-OBD Series C INSTL INSTR DC(10-60V) OUTPUT User Manual
Page 3
 
dc (10…60V) Output Module 3
Publication 1771-IN054C-EN-P - November 2006
Environment and Enclosure
Preventing Electrostatic Discharge
ATTENTION
This equipment is intended for use in a Pollution Degree 2 industrial environment, in 
overvoltage Category II applications (as defined in IEC publication 60664-1), at altitudes 
up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according to 
IEC/CISPR Publication 11. Without appropriate precautions, there may be potential 
difficulties ensuring electromagnetic compatibility in other environments due to 
conducted as well as radiated disturbance.
This equipment is supplied as open-type equipment. It must be mounted within an 
enclosure that is suitably designed for those specific environmental conditions that will 
be present and appropriately designed to prevent personal injury resulting from 
accessibility to live parts. The enclosure must have suitable flame-retardant properties to 
prevent or minimize the spread of flame, complying with a flame spread rating of 5VA, V2, 
V1, V0 (or equivalent) if nonmetallic. The interior of the enclosure must be accessible only 
by the use of a tool. Subsequent sections of this publication may contain additional 
information regarding specific enclosure type ratings that are required to comply with 
certain product safety certifications.
In addition to this publication, see:
• Industrial Automation Wiring and Grounding Guidelines, for additional installation
requirements, Allen-Bradley publication 1770-4.1.
• NEMA Standards publication 250 and IEC publication 60529, as applicable, for
explanations of the degrees of protection provided by different types of enclosure.
ATTENTION
This equipment is sensitive to electrostatic discharge, which can cause internal damage 
and affect normal operation. Follow these guidelines when you handle this equipment:
• Touch a grounded object to discharge potential static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component boards.
• Do not touch circuit components inside the equipment.
• Use a static-safe workstation, if available.
•
Store the equipment in appropriate static-safe packaging when n
ot in use.