VLT® 5000 Crane
Introduction
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Motor
Abbreviation/Definition
Description
I
M,N
The rated motor current (nameplate data)
f
M,N
The rated motor frequency (nameplate data)
U
M,N
The rated motor voltage (nameplate data)
P
M,N
The rated power delivered by the motor (nameplate data)
n
M,N
The rated motor speed (nameplate data)
T
M,N
The rated torque (motor)
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References
Abbreviation/Definition
Description
Analogue ref.
A signal transmitted to input 53, 54 or 60. Can be voltage or current
Binary ref.
A signal transmitted to the serial communication port
Ref
MAX
The maximum value which the reference signal may have. Set in parameter 205
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Miscellaneous
Abbreviation/Definition
Description
ELCB
Earth Leakage Circuit Breaker
Trip
A state which occurs in different situations, eg. if the frequency converter is subject to a live zero warning.
A trip can be cancelled by pressing Reset
Trip locked
A state which occurs in different situations, eg. if the frequency converter is subject to an overtemperature.
A locked trip can be cancelled by cutting off mains and restarting the frequency converter and pressing
Reset
Initializing
If initializing is carried out (see parameter 620), the frequency converter returns to the factory setting
LCP
The Local Control Panel, which makes up a complete interface for control and programming of VLT 5000
Crane. The control panel is detachable and may, as an alternative, be installed up to 3 metres away from
the frequency converter, ie. in a front panel, by means of the installation kit option
Flux Vector
If compared with standard voltage/frequency ratio control, Flux Vector improves the dynamics and the
stability, both when the speed reference is changed and in relation to the load torque
Thermistor
A temperature-dependent resistor placed where the temperature is to be monitored (frequency converter
or motor)
Analogue inputs
The analogue inputs can be used for controlling various functions of the frequency converter. There are
two types of analogue inputs:
Current input and voltage input
Analogue outputs
There are two analogue current outputs
Digital inputs
The digital inputs can be used for controlling various functions of the frequency converter
Digital outputs
There are four digital outputs, two of which activate relay switches.
Brake resistor
The brake resistor is a module capable of absorbing the brake power that is generated in regenerative
braking. This regenerative braking power increases the intermediate circuit voltage and a brake chopper
ensures that the power is transmitted to the brake resistor
Incremental encoder
An external, digital pulse transmitter used for feeding back information on motor speed. The encoder is
used in applications where high accuracy in speed control is required
AWG
Means American Wire Gauge, ie. the American measuring unit for cable cross-section
MG.50.N4.02 - VLT is a registered Danfoss trademark
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