Siemens SIMOCODE 3UF - 7.3 Stalled Rotor

Motor Protection
7.3 Stalled Rotor
SIMOCODE PRO V PN FDI
Programming and Operating Manual, 05/2020, A5E44499659002A/RS-AA/001
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7.3 Stalled Rotor
Stalled Rotor
After the motor current exceeds an adjustable stall limit (current limit), a definable and
delayable response can be parameterized in SIMOCODE pro. For example, the motor can
be set to be tripped quickly independently of the overload protection. The stall protection is
only active after the parameterized class interval has elapsed, e.g. for class 10 after 10
seconds. The stall protection prevents the motor from unnecessary high thermal and
mechanical load as well as premature deterioration.
Level (CiR)
After exceeding the stall limit, SIMOCODE pro reacts according to the specified response.
Level:
0 – up to 1020 % of I
s
Response
Here you can determine the response to be executed when the blocking limit is exceeded:
Response
Overload
Disabled
X
Signaling
X
Warning
X
Tripping
X
Delay (CiR)
The "Delay" parameter is used to specify the time interval. The stall level must be constantly
exceeded before SIMOCODE pro executes the desired response. Otherwise there is no
reaction.
Delay:
0 to 25.5 s
Preset:
0.5 s