Learning Protection Features
158
GM2 Series VFD
890054-00-00
Stall Prevention and Flux Braking
The stall prevention function is a protective function that prevents motor stall caused by overloads.
When high currents are sensed during acceleration and/or constant speed, the output frequency is
decreased automatically. During deceleration, when the DC Link voltage increases, the deceleration
time is extended.
Flux braking is used to determine the optimum deceleration time to avoid overvoltage trips and
without utilizing brake resistors. When using flux braking, the output frequency is increased and
the regenerative energy is expended at the motor. Flux braking does not operate in IM Sensorless
Vector.
Group Code
Name
Setting
Setting Range
Unit
Pr
50
Stall prevention motion and flux
braking
0000*
-
bit
51 Stall frequency 1
60.00
Start frequency
–
Stall Freq 1
Hz
52 Stall level 1
180
30
–
250
%
53 Stall frequency 2
60.00
Stall Freq 1
–
Stall Freq
3
Hz
54 Stall level 2
180
30
–
250
%
55 Stall frequency 3
60.00
Stall Freq 2
–
Stall Freq
4
Hz
56 Stall level 3
180
30
–
250
%
57 Stall frequency 4
60.00
Stall Freq 3
–
Maximum
frequency
Hz
58 Stall level 4
180
30
–
250
%
OU
31 Multi-function (digital) relay1 item
9 Stall
-
-
33 Multi-function (digital) relay2 item
* Displayed as
on the Keypad.
Summary of Contents for RSi GM2 Series
Page 2: ...ii...
Page 58: ...48 GM2 Series VFD Perform Basic Operations 890054 00 00...
Page 122: ...Learning Advanced Features 112 890054 00 00 GM2 Series VFD PID control block diagram...
Page 188: ...Learning Protection Features 178 GM2 Series VFD 890054 00 00...
Page 279: ...Technical Specification 269 890054 00 00 GM2 Series VFD...
