Start-up 01.04
7-22 SIEMENS AG 6SG7000-0BA76
SIMOTRAS HD Operating Instructions
7.7 SIMOTRAS HD troubleshooting table
Fault Possible cause Remedy
A fault or alarm message is
pending
See Section 10 See Section 10
No current, although controller
enabled
Not all enable conditions have
been met
Evaluate operating state display
on parameter r000 (see Section
11)
Drive accelerates uncontrollably Tachometer voltage has
incorrect polarity
Reconnect tachometer (swap
terminals 103 and 104)
Drive does not achieve rated
speed
Actual speed value calibrated
incorrectly
Check P741 and P140 to P143
Drive does not achieve rated
speed when the machine is
warm
Rotor resistance levels have
changed due to the increase in
temperature
• Check rotor resistance taps
• Check rotor contactor
stepping values (U634, U636,
U638)
Tried everything, fault not found Contact the relevant sales
partner or your “authorized
control centre” (see Section 14)
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