Mitsubishi Electric FR-S500 Instruction Manual page 37

Extended function parameter list
Parameter
Indication
Acceleration/
20 deceleration base
frequency
Stall prevention
21
function selection
Stall prevention
22
operation level
Stall prevention
operation level
23
compensation factor at
double speed
Multi-speed setting
24
(speed4)
Multi-speed setting
25
(speed 5)
Multi-speed setting
26
(speed 6)
Multi-speed setting
27
(speed 7)
Stall prevention
28
operation reduction
starting frequency
Acceleration/
29 deceleration pattern
For parameter 30, refer to the basic function parameters.
Name
Indicates the frequency to be referenced for
acceleration from or deceleration to 0Hz in
the time set in Pr. 7 "acceleration time" or
Pr. 8 "deceleration time".
1 to 120Hz
Stall prevention is a function designed to
suspend a frequency increase during
acceleration, decrease frequency during
constant speed or suspend a frequency
decrease during deceleration if the preset
current (0 to
prevent an overcurrent alarm.
Pr. 21 allows you to select whether to use
stall prevention or not according to the
acceleration/deceleration status.
Since the high response current limit value
170
is
22 is set to more than
In that case, set "1" in Pr. 21.
Used to reduce the stall prevention level at
or above the base frequency.
Setting other than "- - -" specifies the
current level at 120Hz which is lower than
the Pr. 22 value of the stall prevention level
at base frequency.
0 to 200%, - - -
Setting other than "- - -" specifies speeds 4
to 7.
By combining ON and OFF of the contact
signals (RH, RM, RL signals), the running
speed can be changed step-by-step.
0 to 120Hz, - - -
You can reduce the stall prevention level in
the high frequency range.
0 to 120Hz
Determines the frequency changing pattern
for acceleration/deceleration.
0: Linear acceleration/deceleration
1: S-pattern acceleration/deceleration A
(e.g. machine tool spindle applications)
2: S-pattern acceleration/deceleration B
(for prevention of load shifting in
conveyor and other applications.)
Description
200
%) is exceeded, in order to
%, torque will not be developed if Pr.
170
%.
RH RM RL
Speed 4 OFF ON
Speed 5 ON OFF
ON ON
Speed 6
Speed 7 ON ON
32
Factory
Setting
60Hz
150%
- - -
- - -
- - -
ON
- - -
ON
OFF
ON
- - -
60Hz
0
0