Velocity Edge GX440 Instructions d'exploitation Page 70

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Electrical installation
4.9 Other connections
Drive converter cabinet units
70 Operating Instructions, 10/2008, A5E00288214A
4.9 Other connections
Depending on the options installed, further connections have to be established, for example,
dv/dt filter plus Voltage Peak Limiter, sine-wave filter, connection for external auxiliary
equipment, main circuit-breaker including fuses or circuit-breaker, EMERGENCY OFF
button, cabinet illumination with service socket, anti-condensation heating for cabinet,
contactor combination (EMERGENCY OFF / EMERGENCY STOP), thermistor motor
protection unit, braking unit, PT100 evaluation unit, insulation monitor, communication
modules, encoder evaluator, and NAMUR option.
Detailed information on connecting individual options with interfaces can be found on the
documentation CD.
4.9.1 dv/dt filter plus Voltage Peak Limiter (option L10)
Description
The dv/dt filter plus Voltage Peak Limiter comprises two components: the dv/dt reactor and
the Voltage Peak Limiter, which limits transients and returns the energy to the DC link.
The dv/dt filters plus Voltage Peak Limiter must be used for motors for which the proof
voltage of the insulation system is unknown or insufficient. Standard motors of the 1LA5,
1LA6 and 1LA8 series only require them at supply voltages > 500 V +10%.
The dv/dt filter plus Voltage Peak Limiter limits the voltage gradient to values < 500 V/µs and
the typical transients to the values below (with motor cable lengths of < 150 m):
< 1000 V at U
line
< 575 V
< 1250 V at 660 V < U
line
< 690 V.
Depending on the converter power, option L10 can be accommodated in the drive converter
cabinet unit or an additional cabinet with a width of 400 mm or 600 mm is required.
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