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5-2 VS1MD AC Drive User Manual
5.2 Motor Start/Stop Precautions
Important points to remember about I/O wiring:
• Always use copper wire.
• Wire with an insulation rating of 600V or greater is recommended.
• Control and signal wires should be separated from power wires by at least 0.3
meters (1 foot).
Important: I/O terminals labeled “Common” are not referenced to the safety ground
terminal and are designed to greatly reduce common mode interference.
!
ATTENTION:A contactor or other device that routinely disconnects and
reapplies the AC line to the drive to start and stop the motor can cause
drive hardware damage. The drive is designed to use control input
signals that will start and stop the motor. If used, the input device must
not exceed one operation per minute or drive damage can occur. Failure
to observe this precaution can result in damage to, or destruction of,
equipment.
ATTENTION:The drive start/stop control circuitry includes solid-state
components. If hazards due to accidental contact with moving
machinery or unintentional flow of liquid, gas or solids exist, an
additional hardwired stop circuit may be required to remove the AC line
to the drive. When the AC line is removed, there will be a loss of any
inherent regenerative braking effect that might be present - the motor
will coast to a stop. An auxiliary braking method may be required.
!
ATTENTION:Driving the 4-20 mA analog input from a voltage source
could cause component damage. Verify proper configuration prior to
applying input signals.