Simotras Hd Troubleshooting Table - Siemens SIMOTRAS 6SG7050 Operating Instructions Manual

Start-up
7.7

SIMOTRAS HD troubleshooting table

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