Mitsubishi FR-A740-00023-EC, Instruction Manual

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199
Motor brake and stop operation
4
P
ARAME
T
E
R
S
<02160 or more>
(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 00250 or less.)
⋅
FR-A740-00023 to 00250 . 2%
⋅
Other than the above........ 0% (without built-in brake resistor)
(2) When using the high-duty brake resistor (FR-ABR) (00620 or less)
⋅
Set "1, 11 or 21" in
Pr. 30
.
⋅
Set Pr. 70 as follows.
00250 or less ......................... 10%
00310 or more ......................... 6%
(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
.
Regeneration Unit
Power Supply to the
Inverter
Pr. 30
Setting
Pr. 70
Setting
Brake unit
(FR-BU2 [other than MT-BU5 mode])
R/L1, S/L2, T/L3
0
(initial value)
⎯
P/+, N/- 10
R/L1, S/L2, T/L3 - P/+, N/- 20
Power regeneration converter (MT-RC) R/L1, S/L2, T/L3 1
0%
(initial value)
Brake unit
(FR-BU2 [MT-BU5 mode], MT-BU5)
R/L1, S/L2, T/L3 1
10% P/+, N/- 11
R/L1, S/L2, T/L3 - P/+, N/- 21
High power factor converter (FR-HC) P/+, N/- 2
⎯
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.
(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).