Mitsubishi Electric FR-A820-00046 Instruction Manual page 665

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Parameters
Pr.
642
A120
643
A121
644
A122
645
A123
646
A124
647
A125
648
A126
650
A128
651
A129
The speed deviation excess detection frequency when a vector control compatible option is
mounted during vector control. (For the details, refer to page 5-118.)
Connection diagram
Sink logic
Pr. 184 = 15
Pr. 190 = 20
Fig. 5-229:
The input signal terminals differ by the settings of Pr. 178 to Pr. 189.
The output signal terminals differ by the settings of Pr. 190 to Pr. 196.
Be careful of the permissible current of the built-in transistors on the inverter. (24 V DC 0.1 A)
NOTES
The automatic restart after instantaneous power failure function and orientation function do not
operate when brake sequence is selected.
To use this function, set the acceleration/deceleration time to 1 s or higher.
Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) and
Pr. 190 to Pr. 196 (output terminal function selection) may affect the other functions. Set parame-
ters after confirming the function of each terminal.
FR-A800
Name
Second brake opening
frequency
Second brake opening
current
Second brake opening
current detection time
Second brake operation time
at start
Second brake operation
frequency
Second brake operation time
at stop
Second deceleration
detection function selection
Second brake opening
current selection
Second brake operation
frequency selection
MCCB
Power
supply
Start signal
Multi-speed signal
Brake opening completion signal
Connection example with mechanical brake (Pr. 184 = 15, Pr. 190 = 20)
Initial
Setting
Description
value
range
3 Hz
0 to 30 Hz
Refer to Pr. 278.
130%
0 to 400%
Refer to Pr. 279.
0.3 s
0 to 2 s
Refer to Pr. 280.
0.3 s
0 to 5 s
Refer to Pr. 281.
6 Hz
0 to 30 Hz
Refer to Pr. 282.
0.3 s
0 to 5 s
Refer to Pr. 283.
0
0, 1
Refer to Pr. 284.
0
0, 1
Refer to Pr. 639.
0
0, 1
Refer to Pr. 640.
MC
R/L1
U
S/L2
V
T/L3
W
STF
RH
∗2
RUN(BOF)
AU(BRI) ∗
1
(BRI)
SD
SE
(A) Application parameters
Set the second brake sequence
function.
The second brake sequence
function is enabled when the RT
signal is ON.
Mechanical
brake
Motor
24 V DC
∗3
MC
Brake opening request
signal (BOF)
I002673E
5 - 485

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