Baldor VS1MD instruction manual Control Wiring, Stop Circuit Requirements

CHAPTER 5

Control Wiring

This chapter describes how to wire the signal and I/O terminal strip for stop, speed feedback, and remote control signals.

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ATTENTION:Apply the rated torque to terminal screws. Loose screws can cause short circuit and malfunction. Tightening the screws too much can damage the terminals and cause short circuit and malfunction.

ATTENTION:Make sure the input power is off before wiring.

ATTENTION:After power supply is switched off following operation, wait at least 10 minutes after LED keypad display is off before you start working on it.

ATTENTION:Applying input power supply to the output terminals U, V and W causes internal inverter damage.

ATTENTION:Use ring terminals with insulated caps when wiring the input power and motor wiring.

ATTENTION:Do not leave wire fragments inside the inverter. Wire fragments can cause faults, breakdowns and malfunctions.

ATTENTION:When more than one motor is connected to one inverter, total wiring length should be less than 200m (656ft). Do not use a 3-wire cable for long distances. Due to increased leakage capacitance between wires, over-current protective feature may operate or equipment connected to the output side may malfunction. In case of long wire length, lower carrier frequency or contact Baldor for recommendations.

ATTENTION:Never short B1 and B2 terminals. Shorting terminals may cause internal inverter damage.

ATTENTION:Do not install a power factor capacitor, surge suppressor or RFI filter in the output side of the inverter. Doing so may damage these components.

5.1Stop Circuit Requirements

ATTENTION:You must provide an external, hardwired emergency stop circuit outside of the drive circuitry. This circuit must disable the

! system in case of improper operation. Uncontrolled machine operation can result if this procedure is not followed. Failure to observe this precaution could result in bodily injury.

In addition to the operational stop, you must provide a hardwired emergency stop external to the drive. The emergency stop circuit must contain only hardwired electromechanical components. Operation of the emergency stop must not depend on electronic logic (hardware or software) or on the communication of commands over an electronic network or link. Note that the hardwired emergency stop you install can be used at any time to stop the drive.

Control Wiring 5-1