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Control Wiring 5-1
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.
5.1 Stop Circuit Requirements
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.
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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.
!
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.