Baldor VS1GV21-1B, Installation & Operating Manual, Page: 11 / 204

General Information 2-1 MN765
Chapter 2
General Information
The VS1GV control uses flux vector technology. Flux vector technology (sometimes referred to as Field Oriented Control) is
a closed loop control scheme that uses an algorithm to adjust the frequency and phase of voltage and current applied to a
three phase induction motor.
The control’s rated output power is based on the use of a NEMA design B four pole motor and 60Hz operation at nominal
rated input voltage. If any other type of motor is used, the control should be sized to the motor using the rated current of
the motor. The control may be used in various applications. It may be programmed by the user to operate in four different
operating zones: standard or quiet and constant torque or variable torque. It can also be configured to operate in a number
of modes depending upon the application requirements and user preference. It is the responsibility of the user to determine
the optimum operating zone and mode to interface the control to the application. These choices are made with the keypad
as explained in Chapter 6 of this manual.
2.1 Limited Warranty
For a period of two (2) years from the date of original purchase, BALDOR will repair or replace without charge controls
and accessories which our examination proves to be defective in material or workmanship. This warranty is valid if the
unit has not been tampered with by unauthorized persons, misused, abused, or improperly installed and has been used
in accordance with the instructions and/or ratings supplied. This warranty is in lieu of any other warranty or guarantee
expressed or implied. BALDOR shall not be held responsible for any expense (including installation and removal),
inconvenience, or consequential damage, including injury to any person or property caused by items of our manufacture
or sale. (Some states do not allow exclusion or limitation of incidental or consequential damages, so the above exclusion
may not apply.) In any event, BALDOR’s total liability, under all circumstances, shall not exceed the full purchase price of the
control. Claims for purchase price refunds, repairs, or replacements must be referred to BALDOR with all pertinent data as to
the defect, the date purchased, the task performed by the control, and the problem encountered. No liability is assumed for
expendable items such as fuses.
Goods may be returned only with written notification including a BALDOR Return Authorization Number and any return
shipments must be prepaid.
2.2 Standards
The VS1GV drives have been designed and tested to comply with the following standards.
2.2.1 Design and Test Standards
• UL508C: Power Conversion Equipment.
• UL840: Insulation coordination including clearance and creepage distances for electrical equipment.
• CSA C22.2 No. 14: Industrial Control Equipment.
• EN61800-5-1: Adjustable speed electrical power drive systems. Safety requirements.
Electrical, thermal and energy.
• EN50178: Electronic equipment for use in power installations.
• EN60529: Degrees of protection provided by enclosures.
• EN61800-3: When installed as directed in this manual, VS1GV drives conform to the category C3 emission limits and the
‘second environment’ immunity requirements defined by this standard.
2.2.2 Environmental Test Standards
• EN60068-1: Environmental testing, general and guidance.
• EN60068-2-2: Environmental testing, Test B. Dry heat.
• EN60068-2-78: Environmental testing, Test cab. Damp heat, steady state.
• EN60068-2-6: Vibration testing.
2.2.3 Marks
See also Appendix C for general recommendations for CE compliance.