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Operation selection functions 4 (Pr. 800 to Pr. 809)
PARAMETERS
3
3.31.4 Speed limit (Pr. 807 to Pr. 809 )
<Settings>
Set the speed limit value to prevent the load torque from becoming less than the torque command value, resulting in
motor overspeed. Select the speed limit input method using Pr. 807.
(1) When Pr. 807 = 0
Refer to the Instruction Manual (basic).
(2) When Pr. 807 = 1
Using the parameters, set the forward rotation and reverse rotation speed limit levels individually.
When you selected torque control, set the speed limit value to prevent the load torque from becoming less
than the torque command value, resulting in motor overspeed.
Parameter Name Factory Setting Setting Range
807 Speed limit selection 0
0
, 1, 2
808 Forward rotation speed limit 1500r/min 0 to 3600r/min
809 Reverse rotation speed limit 9999
0 to 3600r/min
, 9999
Pr. 807 Setting Speed Limit Input Method Operation
0
(factory setting)
Same method as in speed
setting for speed control
• Speed setting from the control panel
• External analog command (terminal 1, 2)
• Multi-speed command
• Option (FR-V5AX etc.)
• For both PU and external operations, speed limit changes according to
the acceleration/deceleration time.
1
Pr. 808 Forward rotation
speed limit
Pr. 809 Reverse rotation
speed limit
According to the rotation direction, set the speed limits in forward and
reverse rotation directions individually. When the reverse rotation speed
limit is 9999, the setting is the same as that of the speed limit in the
forward rotation direction.
2
Forward/reverse rotation
speed limit
(analog polarity switchover
speed limit)
(terminal 1 analog input)
The analog voltage of the terminal 1 input is used to make speed limit. For
0 to 10V input, set the forward rotation speed limit. (The reverse rotation
speed limit is Pr. 1 "maximum speed" .) For -10 to 0V input, set the reverse
rotation speed limit. (The forward rotation speed limit is Pr. 1 "maximum
speed".) The maximum speed of both the forward and reverse rotation is
Pr. 1 "maximum speed". When terminal 1 input is selected, set
"
5
"
in Pr.
868
"
terminal 1 function assignment
"
. (Refer to page 183.)
Parameter Name Factory Setting Setting Range
808 Forward rotation speed limit 1500r/min 0 to 3600r/min
809 Reverse rotation speed limit 9999
0 to 3600r/min
, 9999
torque
Pr.8
Pr.7
Start signal
Speed limit
operation
Pr. 808, forward
rotation speed
limit level
Pr. 808, forward
rotation speed
limit level
Pr. 809, reverse
rotation speed
limit level
Torque
controllable
range
Pr. 809, reverse
rotation speed
limit level
Torque
controllable
range
150% torque
Output torque
0
Reverse rotation
Forward
rotation
Speed
Speed