CYG PRS-7367 - The locked-rotor protection MDZS

Protection Functions
226 PRS-7367
MQDS_EnaSET
Ia>0.1IeANA
SIG MST_Str
MQDS Op
SIG
Ib>0.1IeANA
Ic>0.1IeANA
&
1
T_MStr
MQDS Str
SIG
Ia>1.2IeANA
Ib>1.2IeANA
Ic>1.2IeANA
1
&
Figure 3.49-2 Machine Long start logic
3.49.3 Settings
No
Name
Values(Range)
Unit
Step
Default
Description
1.
MQDS_Ena
0~1
-
1
0
MQDS enable
3.50 The locked-rotor protection MDZS
3.50.1 Overview
3.50.1.1 Function Block
MDZS
I3P
Str
Op
MStr
Figure 3.50-1 Function block
3.50.1.2 Signals
Table 3.50-1 Input signal
Signal
Description
I3P
The current magnitude in all the three phases
MStr
Machine Startup Signal
Table 3.50-2 Output signal
Signal
Description