Mitsubishi Electric FR-A700 Instruction Manual page 215

Fr-a700 series to 03460-na/09620-na/00330-n4/00170-n4
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<FR-A720-02880(FR-A740-01440) or more>
Regeneration Unit
Brake unit
(FR-BU2 [other than MT-BU5 mode])
Power regeneration converter (MT-RC) R/L1, S/L2, T/L3
Brake unit
(FR-BU2 [MT-BU5 mode], MT-BU5)
High power factor converter (FR-HC)
(1) When the built-in brake resistor, the brake unit (FR-BU2 [other than MT-BU5 mode], BU, FR-
BU) is used
⋅ Set "0 (initial value), 10 or 20" in Pr. 30. The Pr. 70 setting is made invalid.
At this time, the regenerative brake duty is as follows. (The built-in brake resistor is provided for the FR-A720-
00330(FR-A740-00170) or less.)
⋅ FR-A720-00030 to 00175 ..3%
⋅ FR-A720-00240, 00330 .... 2%
⋅ FR-A740-00015 to 00170 . 2%
⋅ Other than the above........ 0% (without built-in brake resistor)
CAUTION
⋅ When replacing the existing MT-BU5 type brake unit with the FR-BU2 type brake unit, set "2" in Pr. 0 Brake mode selection of the
FR-BU2, "1" in Pr. 30 Regenerative function selection and "10%" in Pr. 70 Special regenerative brake duty of the inverter.
⋅ Do not operate the MT-BU5 type brake unit and FR-BU2 in parallel. Doing so could cause an alarm or brake unit failure. Use
the FR-BU2 only when performing parallel operation.
(2) When using the high-duty brake resistor (FR-ABR) (FR-A720-00900 (FR-A740-00440) or
less)
⋅ Set "1, 11 or 21" in Pr. 30.
⋅ Set Pr. 70 as follows.
FR-A720-00330(FR-A740-00170) or less...... 10%
FR-A720-00460(FR-A740-00230) or more.... 6%
(3) When using a brake unit (FR-BU2 [MT-BU5 mode], MT-BU5) and power regeneration
converter (MT-RC)
⋅ Set "1, 11 or 21" in Pr. 30.
⋅ Set "10%" in Pr. 70 when using a brake unit (FR-BU2 [MT-BU5 mode], MT-BU5).
⋅ Set "0%" in Pr. 70 when using a power regeneration converter (MT-RC).
(4) When using the high power factor converter (FR-HC, MT-HC) or power regeneration
common converter (FR-CV)
⋅ Set "2" in Pr. 30. The Pr. 70 setting is made invalid.
⋅ Use any of Pr. 178 to Pr. 189 (input terminal function assignment) to assign the following signals to the contact input
terminals.
(a)X10 signal: FR-HC, MT-HC connection, FR-CV connection (inverter operation enable signal)
To make protective coordination with the FR-HC, MT-HC or FR-CV, use the inverter operation enable signal
to shut off the inverter output. Input the RDY signal of the FR-HC, MT-HC (RDYB signal of the FR-CV).
(b)X11 signal: FR-HC, MT-HC connection (instantaneous power failure detection signal)
When the setting has been made to hold the mode at occurrence of an instantaneous power failure for RS-
485 communication operation, use this signal to hold the mode. Input the Y1 or Y2 signal (instantaneous
power failure detection signal) of the FR-HC, MT-HC.
⋅ For the terminal used for X10 or X11 signal input, assign its function by setting "10" (X10) or "11" (X11) in any of Pr.
178 to Pr. 189.
Power Supply to the
Inverter
R/L1, S/L2, T/L3
P/+, N/-
R/L1, S/L2, T/L3 - P/+, N/-
R/L1, S/L2, T/L3
P/+, N/-
R/L1, S/L2, T/L3 - P/+, N/-
P/+, N/-
Motor brake and stop operation
Pr. 30
Pr. 70
Setting
Setting
0
(initial value)
10
20
0%
1
(initial value)
1
11
10%
21
2
4
205

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Fr-a720-00030Fr-a740-00015

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