Mitsubishi Electric FR-F800, Instruction Manual

Page: 337 / 834

Parameters (H) Protective function parameter
FR-F800 5 - 175
5.7.11 Stall prevention operation
This function monitors the output current and automatically changes the output frequency to pre-
vent the inverter from tripping due to overcurrent, overvoltage, etc. It can also limit the stall preven-
tion and fast-response current limit operation during acceleration/deceleration and power/regener-
ative driving.Stall prevention
If the output current exceeds the stall prevention operation level, the output frequency of the inverter
is automatically changed to reduce the output current.
Also the second stall prevention function can limit the output frequency range in which the stall pre-
vention function is enabled.
●
Fast-response current limit
If the current exceeds the limit value, the output of the inverter is shut off to prevent an
overcurrent.
Pr. Name
Initial value
Setting range Description
FM CA
22
H500
Stall prevention
operation level
120% 110%
0 Stall prevention operation disabled.
0.1 to 400%
Set the current limit at which the stall prevention
operation will start.
156
H501
Stall prevention
operation selection
0
0 to 31,
100 to 101
Enable/disable the stall prevention operation and
the fast-response current limit operation.
48
H600
Second stall prevention
operation level
120% 110%
0 Second stall prevention operation disabled.
0.1 to 400%
The stall prevention operation level can be
changed using the RT signal.
49
H601
Second stall prevention
operation frequency
0Hz
0 Second stall prevention operation disabled.
0.01 to 590 Hz
Set the frequency at which the Pr. 48 stall
prevention operation will start.
9999 Pr. 48 is enabled when RT signal is ON.
23
H610 Stall prevention
operation level
compensation factor at
double speed
9999
0 to 200%
The stall operation level when running at high
speeds above the rated frequency can be
reduced.
9999
Stall prevention operation disabled at double
speed.
66
H611
Stall prevention
operation reduction
starting frequency
60 Hz 50 Hz 0 to 590 Hz
Set the frequency at which the stall operation
level reduction will start.
148
H620
Stall prevention level at
0 V input
120% 110%
0 to 400%
The stall prevention operation level can be
changed by the analog signal input to the
terminal 1 (terminal 4).
149
H621
Stall prevention level at
10 V input
150% 120%
0 to 400%
V/F V/F V/F
V/F V/F V/F Magnetic flux Magnetic flux Magnetic flux
V/F V/F V/F
V/F V/F V/F Magnetic flux Magnetic flux Magnetic flux
V/F V/F V/F
V/F V/F V/F Magnetic flux Magnetic flux Magnetic flux
V/F V/F V/F
V/F V/F V/F Magnetic flux Magnetic flux Magnetic flux
V/F V/F V/F
V/F V/F V/F Magnetic flux Magnetic flux Magnetic flux
V/F V/F V/F
V/F V/F V/F Magnetic flux Magnetic flux Magnetic flux