User`s guide
Bulletin No. VVDED397053US Section 1—Hardware Set-Up
November 2000 Bus Voltage Measurement Procedure
© 2000 Schneider Electric All Rights Reserved
3
— Keep static producing material (plastic, upholstery, carpeting, etc.) 
out of the immediate work area.
— Avoid touching exposed conductors and component leads with 
skin or clothing.
• If any damage is found, notify the carrier and your local Square D 
representative.
• To store the option card, replace it in its original package (including the 
anti-static bag) and store it at -40 to 185 °F (-40 to 85 °C).
BUS VOLTAGE MEASUREMENT PROCEDURE
Before installing the Interbus-S communication card in the ALTIVAR 58 
drive controller, measure the bus voltage as described in this section.
DANGER
HAZARDOUS VOLTAGE
• Read and understand the bus voltage measurement procedure 
before performing the procedure. Measurement of bus capacitor 
voltage must be performed by qualified personnel.
• Do not short across DC bus capacitors or touch unshielded 
components or terminal strip screw connections with voltage 
present.
• Many parts in this drive controller, including printed wiring boards, 
operate at line voltage. DO NOT TOUCH. Use only electrically 
insulated tools.
Electrical shock will result in death or serious injury.
VVDED397053USBook Page 3 Tuesday, November 28, 2000 9:01 AM










