Siemens SINAMICS G120P, Руководство по эксплуатации

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Electrical installation
4.9 Other connections
Inverter cabinet units
106
Operating Instructions, 12/2014, A5E32923362A
NOTICE
Material damage caused by switching on too frequently
The Power Module can be severely damaged if it is switched on too frequently.
•
Observe the maximum switch-on frequency (1x every 3 min.) specified in the technical
data.
Temperature evaluation
The Line Harmonics Filter compact is forced cooled via fans. In the event of fan failure, the
integrated temperature sensors protect the Line Harmonics Filter compact against
overheating.
● The temperature sensor for triggering the alarm threshold is connected to terminal -X9:3.
When the temperature sensor trips, "external alarm 1" (A7850) is triggered.
● The temperature sensor for triggering the fault threshold is connected to terminal -X9:4. In
this way, if the temperature sensor trips, "external fault 1" (F7860) is triggered, and
therefore the cabinet unit is shut down.
4.9.3 dv/dt filter compact plus Voltage Peak Limiter (option L07)
Description
The dv/dt filter compact plus Voltage Peak Limiter comprises two components: the dv/dt
reactor and the Voltage Peak Limiter, which cuts off the voltage peaks and returns the
energy to the DC link. The dv/dt filter compact plus Voltage Peak Limiter is designed for use
with motors for which the voltage strength of the insulation system is unknown or insufficient.
The dv/dt filter compact plus Voltage Peak Limiter limits the voltage load on the motor cables
to values in accordance with the limit value curve A in compliance with IEC/TS 60034-
25:2007.
The rate of voltage rise is limited to < 1600 V/µs, the peak voltages are limited to < 1400 V.
Restrictions
The following restrictions should be noted when a dv/dt filter compact plus Voltage Peak
Limiter is used:
● Maximum permissible motor cable lengths:
–
Shielded cable: max. 100 m
– Unshielded cable: max. 150 m