Mitsubishi Electric FR-A740-00023 Instruction Manual page 131

(4) Forward rotation/reverse rotation speed limit (Pr. 807 = "2")
⋅ When making a speed limit using analog input from terminal 1, the speed limit of the forward and reverse rotation
can be switched according to the polarity of voltage.
⋅ Forward/reverse rotation speed limit is made valid when Pr. 868 Terminal 1 function assignment = "5".
⋅ For 0 to 10V input, set the forward rotation speed limit. The reverse rotation speed limit at this time is the value of
Pr.1 Maximum frequency.
⋅ For -10 to 0V input, set the reverse rotation speed limit. The forward rotation speed limit at this time is the value of
Pr. 1 Maximum frequency .
⋅ The maximum speed of both the forward and reverse rotations is Pr. 1 Maximum frequency .
When terminal 1 input is "-10 to 0V"
Speed
Torque controllable range
150
Speed
Pr.1
The forward rotation
speed limit
Terminal 1 input
(-10 to 0V)
Pr.7
The reverse
rotation speed
limit
Start signal OFF ON
REMARKS
⋅ When making speed limit from terminal 1, make calibration of terminal 1. (Refer to page 288.)
CAUTION
When the actual speed reaches or exceeds the speed limit value, torque control is switched to speed control to prevent
overspeed.
(SL) appears on the operation panel during speed limit operation and the OL signal is output.
♦Parameters referred to♦
Pr. 1 Maximum frequency, Pr. 2 Minimum frequency
Pr. 7 Acceleration time, Pr. 8 Deceleration time
Pr. 13 Starting frequency Refer to page 169
Pr. 4 to Pr. 6, Pr. 24 to Pr. 27, Pr. 232 to Pr. 239 (Multi-speed operation)
Pr. 868 Terminal 1 function assignment
Pr. 125, Pr. 126, C2 to C7, C12 to C15 (frequency setting voltage (current) bias/gain)
Forward rotation
Pr.1
0 150
Output torque (%)
Terminal 1 input
Reverse rotation
Torque controllable range
Time
Pr.8
Refer to page 151
Refer to page 167
Refer to page 274
Torque control by real sensorless vector
When terminal 1 input is "0 to 10V"
150
Torque controllable range
Speed
Terminal 1 input (0 to 10V)
The forward rotation speed
limit
Pr.1
The reverse rotation
speed limit
OFF
Start signal
Refer to page 160
Refer to page 282
control, vector control
Speed
Forward rotation
Terminal 1
input
0
150
Output
torque (%)
Pr.1
Reverse rotation
Torque controllable range
Pr.7 Pr.8
ON
Time
4
121