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Regenerative Brake Duty (pr. 30, Pr. 70) - Mitsubishi Electric FR-A520-0.4K -55K Instruction Manual

Transistorized inverter, high function & low acoustic noise.
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Regenerative brake duty (Pr. 30, Pr. 70)

Pr. 30 "regenerative function selection"
Pr. 70 "special regenerative brake duty"
When making frequent starts/stops with a 7.5K or less inverter, use the optional "high-duty brake resistor"
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(FR-ABR) to increase the regenerative brake duty.
Use the optional "high power factor converter (FR-HC)" to reduce harmonics, improve the power factor, or
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continue the regenerative mode.
Parameter
Factory
Number
Setting
30
0
70
0%
<Setting>
( 1 ) When using the built-in brake resistor, brake unit, power return converter
·
Set "0" in Pr. 30.
The Pr. 70 setting is made invalid.
At this time, the regenerative brake duty is as follows:
*FR-A520-0.4K to 3.7K ...............3%
*FR-A520-5.5K to 7.5K ...............2%
*FR-A540-0.4K to 7.5K ...............2%
( 2 ) When using the high-duty brake resistor (FR-ABR)
·
Set "1" in Pr. 30.
·
Set "10%" in Pr. 70.
( 3 ) When using the high power factor converter (FR-HC)
1) Set "2" in Pr. 30.
2) Use any of Pr. 180 to Pr. 186 to assign the following signals to the contact input terminals.
·
X10: FR-HC connection (inverter operation enable signal) (Note 3)
To make protective coordination with the high power factor converter (FR-HC), use the inverter
operation enable signal to shut off the inverter output. Enter the RDY signal of the high power factor
converter.
·
X11: FR-HC connection (instantaneous power failure detection signal)
When the computer link inboard option (FR-A5NR) is used and the setting is made to hold the pre-
instantaneous power failure mode, use this signal to hold that mode. Enter the instantaneous power
failure detection signal of the high power factor converter.
3) The Pr. 70 setting is made invalid.
Set "10" and "11" in any of Pr. 180 to Pr. 186 to allocate the terminals used to input the X10 and X11
signals.
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Setting Range
Remarks
0 to 2
0 to 15%
0.4K to 1.5K
0 to 30%
2.2K to 7.5K
0%
11K or more
76
PARAMETERS
Related parameters
Pr. 180 "RL terminal function selection"
Pr. 181 "RM terminal function selection"
Pr. 182 "RH terminal function selection"
Pr. 183 "RT terminal function selection"
Pr. 184 "AU terminal function selection"
Pr. 185 "JOG terminal function selection"
Pr. 186 "CS terminal function selection"

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