05.2005 Start-up
Siemens AG 6SE7087-2NP85-0AA0
SIMOVERT MASTERDRIVES Operating Instructions 3-3
3.2.3 50 kW / 100 kW rectifier units
LED Designation Meaning
Green Run • Pre-charging is finished
• Rectifier unit ready-to-operate
Red Failure
Group fault,
There is a fault in the rectifier unit, "fault“ (X91)
contact is open:
• 24 V supply voltage < 19 V
• Line phase failure
• DC link voltage > 800 V
• Heat sink temperature too high,
• Short circuit of braking resistor
Yellow Chopper active Brake chopper activated.
Table 3-3 Operating statuses of the rectifier unit
The fault message is not stored. It is only displayed for as long as a
fault is present (at least 1 sec) and need not be acknowledged.
NOTE
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