Danfoss VLT HVAC Drive FC 100 Series, Руководство по конструкции

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INFO, TEST, and RESET buttons
IEC Emergency Stop with Pilz Safety Relay
Includes a redundant 4-wire emergency-stop push-button
mounted on the front of the enclosure and a Pilz relay that
monitors it in conjunction with the adjustable frequency
drive safe-stop circuit and the line power contactor located
in the options cabinet.
Manual Motor Starters
Provide 3-phase power for electric blowers often required
for larger motors. Power for the starters is provided from
the load side of any supplied contactor, circuit breaker, or
disconnect switch. Power is fused before each motor
starter, and is off when the incoming power to the drive is
off. Up to two starters are allowed (one if a 30 A, fuse-
protected circuit is ordered). Integrated into the adjustable
frequency drive safe-stop circuit.
Unit features include:
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Operation switch (on/off)
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Short-circuit and overload protection with test
function
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Manual reset function
30 Ampere, Fuse-protected Terminals
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3-phase power matching incoming AC line
voltage for powering auxiliary customer
equipment
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Not available if two manual motor starters are
selected
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Terminals are off when the incoming power to
the drive is off
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Power for the fused protected terminals will be
provided from the load side of any supplied
contactor, circuit breaker, or disconnect switch.
In applications where the motor is used as a brake, energy
is generated in the motor and send back into the
Adjustable frequency drive. If the energy cannot be
transported back to the motor, it will increase the voltage
in the drive DC line. In applications with frequent braking
and/or high inertia loads, this increase may lead to an
overvoltage trip in the drive, and ultimately, a shutdown.
Brake resistors are used to dissipate the excess energy
resulting from the regenerative braking. The resistor is
selected in respect to its ohmic value, its power dissipation
rate and its physical size. Danfoss offers a wide variety of
different resistors that are specially designed to our
adjustable frequency drives. See the section
Control with
brake function for the dimensioning of brake resistors.
Code numbers can be found in .
The LCP can be moved to the front of a cabinet by using
the remote built-in kit. The enclosure is the IP66. The
fastening screws must be tightened with a torque of max.
1Nm.
Technical data
Enclosure: IP66 front
Max. cable length between and unit: 10 ft [3 m]
Communication std: RS-485
Table 3.12
Figure 3.13
VLT
®
HVAC Drive Selection VLT
®
HVAC Drive Design Guide
3-12 MG11BB22 - VLT
®
is a registered Danfoss trademark
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