Mitsubishi Electric FR-A700 Instruction Manual page 162

Adjust the output torque of the motor (current)
(4) Set multiple stall prevention operation levels (Pr. 48, Pr. 49, Pr. 114, Pr. 115)
During acceleration
Pr.48
During deceleration/constant speed During deceleration/constant speed During deceleration/constant speed
Pr.114
Pr.49 Running frequency
Pr.115
Set frequency exceeds Pr. 49(Pr.115)
Output
frequency (Hz)
Set
frequency
Pr.49
(Pr.115)
Stall
prevention
level Pr. 22
used
Set frequency is Pr. 49 (Pr.115)or less
Output
frequency (Hz)
Pr.49
(Pr.115)
Set
frequency
Pr. 22
used
REMARKS
⋅ When Pr. 49 ≠ "9999" (level changed according to frequency) and Pr. 48 = "0%", the stall prevention operation level is 0% at or
higher than the frequency set in Pr. 49.
⋅ In the initial setting, the RT signal is assigned to the RT terminal. By setting "3" to any of Pr. 178 to Pr. 189 (input terminal function
selection), you can assign the RT signal to the other terminal.
CAUTION
⋅ Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may affect the other functions. Please
make setting after confirming the function of each terminal.
⋅ The RT(X9) signal acts as the second (third) function selection signal and makes the other second (third) functions valid. (Refer
to page 232)
152
⋅ Setting "9999" in Pr. 49 Second stall prevention operation frequency and
turning the RT signal on make Pr. 48 Second stall prevention operation
current valid.
⋅ In Pr. 48 (Pr. 114), you can set the stall prevention operation level at the
output frequency from 0Hz to that set in Pr. 49 (Pr. 115).
During acceleration, however, the operation level is as set in Pr. 22.
⋅ This function can also be used for stop-on-contact or similar operation by
decreasing the Pr. 48 (Pr. 114) setting to weaken the deceleration torque
(stopping torque).
⋅ Pr. 114 and Pr. 115 are made valid when the X9 signal is on. For the
terminal used for X9 signal input, set "9" in any of Pr. 178 to Pr. 189 input
terminal function selection to assign the X9 signal function.
Pr. 49
Output
Setting
frequency
(initial value)
0.01Hz to 400Hz
Time
9999
*2
Pr. 48
(Pr.114)
used
*1 The smaller setting of the stall prevention operation levels set in Pr. 22 and Pr. 48
has a higher priority.
*2 When Pr. 868 = "4" (Stall prevention operation level analog input), the stall
prevention operation level also switches from the analog input (terminal 1 input)
to the stall prevention operation level of Pr. 48 when the RT signal turns on.
(The second stall prevention operation level cannot be input in an analog form.)
Output
frequency
Time
Pr. 48
(Pr.114)
used
Pr. 115
Setting
0 The second (third) stall prevention operation is not
performed.
The second (third) stall prevention operation is
performed according to the frequency.
Setting The second (third) stall prevention function is
can not performed according to the RT signal.
be RT signal ON ... Stall level Pr. 48
made. RT signal OFF ... Stall level Pr. 22
Operation
*1