Mitsubishi FR-D720-5.5K

77
DRIVE THE MOTOR
3
Parameter list
Parameter List
Logic selection of
output stop signal
(MRS)
17
MRS input
selection
10
0 Normally open input

2
Normally closed input (NC contact input
specifications)
4
External terminal: Normally closed input
(NC contact input specifications)
Communication: Normally open input
——
18
Refer to Pr. 1 and Pr. 2.
19
Refer to Pr.3.
20
Refer to Pr.7, Pr.8.
Stall prevention operation
22
Stall prevention
operation level
0.1% 150%
0
Stall prevention operation selection
becomes invalid.

0.1 to
200%
Current value at which stall prevention
operation will be started.
23
Stall prevention
operation level
compensation
factor at double
speed
0.1% 9999
0 to 200%
The stall operation level can be reduced
when operating at a high speed above the
rated frequency.

9999 Constant according to Pr. 22
48
Second stall
prevention
operation current
0.1% 9999
0 Second stall prevention operation invalid

0.1 to 200% Second stall prevention operation level.
9999 Same level as Pr.22.
66
Stall prevention
operation
reduction starting
frequency
0.01Hz 60Hz 0 to 400Hz
Frequency at which the stall operation
level is started to reduce.

156
Stall prevention
operation
selection
10
0 to 31,
100, 101
Select whether to use stall prevention or
not according to the acceleration/
deceleration status.

157
OL signal output
timer
0.1s 0s
0 to 25s
Output start time of the OL signal output
when stall prevention is activated. 
9999 Without the OL signal output
——
24 to 27
Refer to Pr.4 to Pr.6.
Acceleration
/deceleration
pattern
29
Acceleration/
deceleration
pattern selection
10
0 Linear acceleration/ deceleration

1 S-pattern acceleration/deceleration A
2 S-pattern acceleration/deceleration B
Selection of
regeneration unit
30
Regenerative
function selection
10
0
Inverter without regenerative function,
Brake resistor (MRS type, MYS type),
Brake unit (FR-BU2),
High power factor converter (FR-HC),
Power regeneration common converter
(FR-CV)

1
High-duty brake resistor (FR-ABR),
Brake resistor (MYS type) used at 100%
torque/6%ED
2
High power factor converter (FR-HC),
(when an automatic restart after
instantaneous power failure is selected)
70
Special
regenerative brake
duty
0.1% 0% 0 to 30%
Brake duty (6%) when using the brake
resistor (MYS type),
Brake duty (10%) when using the high-
duty brake resistor (FR-ABR)

Function
Parameter
Name
Incre-
ments
Initial
Value
Range Description
Parameter
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