Mitsubishi Electric FR-A700 Technical Manual page 271

(2) Set the forward rotation and reverse
rotation individually.
[Pr. 807 = 1, Pr. 808, 809]
Set the speed limit during forward rotation using [Pr.
808 Forward rotation speed limit] and the speed limit
during reverse rotation using [Pr. 809 Reverse rotation
speed limit].
The speed during forward and reverse rotation is
limited at the setting value of [Pr. 808] when [Pr. 809 =
9999] (initial value).
The speed limit value changes according to
acceleration/deceleration time of [Pr. 7, Pr. 8].
Forward rotation
[Pr. 7]
Speed limit
Speed limit
Reverse rotation
ON
STF (STR)
(3) Forward rotation/reverse rotation speed
limit [Pr. 807 = 2, C12 to C15(Pr. 917, 918), C30
to C33(Pr. 926, 927)]
When making a speed limit using analog input to
terminal 1 or terminal 6 (FR-A7AZ), the speed limit of
the forward and reverse rotation can be switched
according to the polarity of voltage.
Forward/reverse rotation speed limit is valid when [Pr.
868 Terminal 1 function assignment = 5]. (Refer to page
for details of terminal1 function assignment)
43
Set [Pr. 406 High resolution analog input selection = 5] to
limit forward/reverse rotation speed using terminal 6
(FR-A7AZ). When [Pr. 406 = 5] and [Pr. 868 = 5],
terminal 6 is the forward/reverse speed limit, and
terminal 1 does not have a function.
Speed limit by analog terminal input can be calibrated
using calibration parameter [C12 to 15 (Pr. 917, Pr.
918)], [C34 to 37 (Pr. 928, Pr. 929)].
60Hz
Output
frequency
(Hz)
Bias
[C12 (Pr.917)] Frequency setting signal
0
[C13 (Pr.917)]
Example of terminal 1 calibration
[Pr. 8]
[Pr. 808]
Time Time Time
[Pr. 809] [Pr. 809] [Pr. 809]
Torque controllable range Torque controllable range Torque controllable range
OFF
Initial value
Gain
[C14 (Pr.918)]
10V
[C15 (Pr.918)]
305
60Hz
Output
frequency
(Hz)
Bias
[C30 (Pr.926)] Frequency setting signal
0
[C31 (Pr.926)]
Example of terminal 6 (FR-A7AZ) calibration
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]. The speed limit
value does not follow acceleration/deceleration time
of [Pr. 7 and Pr. 8].
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 forward
rotation speed limit does not follow acceleration/
deceleration time of [Pr. 7, Pr. 8].
The maximum speed of both the forward and reverse
rotations is [Pr. 1Maximum frequency].
When terminal 1 or terminal 6 (FR-A7AZ) input is "0 to 10V"
Speed
[
Terminal 1 (6) input (0 to 10V)
The forward rotation speed
limit
[ Pr. 1 ]
The reverse rotation
speed limit
OFF
Start signal
When terminal 1 or terminal 6 (FR-A7AZ) input is "-10 to 0V"
Speed
[ Pr. 1 ]
The forward rotation
speed limit
Terminal 1 (6)
input (-10 to 0V)
The reverse
[ Pr. 7
rotation speed
limit
Start signal OFF ON
PARAMETER
Initial value
Gain
[C32 (Pr.927)]
10V
[C33 (Pr.927)]
Torque controllable range
Pr. 7 Pr. 8
] [ ]
Time
ON
Torque controllable range
Time
] [ Pr. 8 ]
2