Mitsubishi Electric FR-A800, Instruction Manual

Page: 665 / 1042

Parameters (A) Application parameters
FR-A800 5 - 485
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
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)
642
A120
Second brake opening
frequency
3 Hz 0 to 30 Hz Refer to Pr. 278.
Set the second brake sequence
function.
The second brake sequence
function is enabled when the RT
signal is ON.
643
A121
Second brake opening
current
130% 0 to 400% Refer to Pr. 279.
644
A122
Second brake opening
current detection time
0.3 s 0 to 2 s Refer to Pr. 280.
645
A123
Second brake operation time
at start
0.3 s 0 to 5 s Refer to Pr. 281.
646
A124
Second brake operation
frequency
6 Hz 0 to 30 Hz Refer to Pr. 282.
647
A125
Second brake operation time
at stop
0.3 s 0 to 5 s Refer to Pr. 283.
648
A126
Second deceleration
detection function selection
0 0, 1 Refer to Pr. 284.
650
A128
Second brake opening
current selection
0 0, 1 Refer to Pr. 639.
651
A129
Second brake operation
frequency selection
0 0, 1 Refer to Pr. 640.
I002673E
Fig. 5-229: Connection example with mechanical brake (Pr. 184 = 15, Pr. 190 = 20)
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.
Pr. Name
Initial
value
Setting
range
Description
R/L1
S/L2
T/L3
MC
STF
RH
AU(BRI)
∗
1
SD
MC
U
V
W
RUN(BOF)
SE
∗2
∗3
MCCB
Sink logic
Pr. 184 = 15
Pr. 190 = 20
Power
supply
Start signal
Multi-speed signal
Brake opening completion signal
(BRI)
Mechanical
brake
Motor
24 V DC
Brake opening request
signal (BOF)