Baldor VS1MXS51 Installation & Operating Manual page 6

WARNING: Do not remove cover for at least five (5) minutes after AC power is disconnected to allow
capacitors to discharge. Dangerous voltages are present inside the equipment. Electrical
shock can cause serious or fatal injury.
WARNING: Improper operation of control may cause violent motion of the motor shaft and driven
equipment. Be certain that unexpected motor shaft movement will not cause injury to
personnel or damage to equipment. Certain failure modes of the control can produce peak
torque of several times the rated motor torque.
WARNING: Motor circuit may have high voltage present whenever AC power is applied, even when
motor is not rotating. Electrical shock can cause serious or fatal injury.
WARNING: Dynamic brake resistors may generate enough heat to ignite combustible materials. Keep
all combustible materials and flammable vapors away from brake resistors.
WARNING: The motor shaft will rotate during the autotune procedure. Be certain that unexpected
motor shaft movement will not cause injury to personnel or damage to equipment.
WARNING: MEDICAL DEVICE/PACEMAKER DANGER - Magnetic and electromagnetic fields in the
vicinity of current carrying conductors and industrial motors can result in a serious health
hazard to persons with cardiac pacemakers, internal cardiac defibrillators,
neurostimulators, metal implants, cochlear implants, hearing aids, and other medical
devices. To avoid risk, stay away from the area surrounding a motor and its current
carrying conductors.
CAUTION: Disconnect motor leads (U, V and W) from control before you perform a dielectric withstand
(insulation) test on the motor. Failure to disconnect motor from the control will result
in extensive damage to the control. The control is tested at the factory for high voltage/
leakage resistance as part of the Underwriters Laboratory requirements.
CAUTION: Suitable for use on a circuit capable of delivering not more than the RMS symmetrical
short circuit amperes listed here at rated voltage.
CAUTION: Do not connect AC power to the Motor terminals U, V and W. Connecting AC power to these
terminals may result in damage to the control.
CAUTION: Baldor does not recommend using "Grounded Leg Delta" transformer supplies that may
create ground loops. Instead, we recommend using a four wire Wye.
CAUTION: If the DB hardware mounting is any position other than vertical, the DB hardware must be
derated by 35% of its rated capacity.
CAUTION: Only Baldor cables should be used to connect the keypad and control. These are special
twisted pair cables to protect the control and the keypad. Damage associated with other
cable types are not covered by the Baldor warranty.
CAUTION: If an M-Contactor is installed, the control must be disabled for at least 200msec before the
M-Contactor is opened. If the M-Contactor is opened while the control is supplying voltage
and current to the motor, the control may be damaged. Before the control is enabled, the
M-Contactor must be closed for at least 200msec.
CAUTION: Use of power correction capacitors on the output of the drive can result in erratic operation
of the motor, nuisance tripping, and/or permanent damage to the drive. Remove power
correction capacitors before proceeding. Failure to observe this precaution could result in
damage to, or destruction of, the equipment.
CAUTION: Integral solid state short circuit protection does not provide branch circuit protection.
Branch circuit protection must be provided in accordance with the National Electric Code
and any additional local codes.
1-2 Introduction
Horsepower RMS Symmetrical Amperes
1 - 7-1/2 5,000
MN762S