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Sailer Manual HPVFE
5
Drive Frame Sizes
Similar HPVFE drive sizes are grouped into frame sizes to simplify spare parts ordering, dimensioning, etc.
A cross-reference of drive catalog numbers and their respective frame sizes is provided in
Appendix B
.
General Precautions
ATTENTION:
To avoid an electric shock hazard, verify that the voltage on the bus capacitors has
discharged before performing any work on the drive. Measure the DC bus voltage at the –DC and +
DC terminals on the Power Terminal Block (refer to
Chapter 1
Power Terminal descriptions). The
voltage must be zero.
Darkened LEDs or a darkened LCD display is not an indication that capacitors have discharged to safe
voltage levels.
ATTENTION:
Only qualified personnel familiar with adjustable frequency AC drives and associated
machinery should plan or implement the installation, start-up and subsequent maintenance of the system.
Failure to comply may result in personal injury and/or equipment damage.
ATTENTION:
This drive contains ESD (Electrostatic Discharge) sensitive parts and assemblies. Static
control precautions are required when installing, testing, servicing or repairing this assembly.
Component damage may result if ESD control procedures are not followed.
ATTENTION:
An incorrectly applied or installed drive can result in component damage or a reduction
in product life. Wiring or application errors, such as, undersizing the motor, incorrect or inadequate AC
supply, or excessive ambient temperatures may result in malfunction of the system.
ATTENTION:
The bus regulator function is extremely useful for preventing nuisance overvoltage
faults resulting from aggressive decelerations, overhauling loads, and eccentric loads. However, it can
also cause either of the following two conditions to occur.
1. Fast positive changes in input voltage or imbalanced input voltages can cause uncommanded positive
speed changes;
2. Actual deceleration times can be longer than commanded deceleration times.
However, a “Stall Fault” is generated if the drive remains in this state for 1 minute. If this condition is
unacceptable, the bus regulator must be disabled (see parameter
A441
). In addition, installing a properly
sized dynamic brake resistor will provide equal or better performance in most cases.
Содержание HPVFE
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