203
Motor brake and stop operation
4
PARAMETERS
(7) Power supply specification at DC feeding
(8) Regenerative brake duty alarm output and alarm signal (RBP signal)
400V class
Rated input DC voltage 537VDC to 679VDC
Permissible fluctuation 457VDC to 740VDC
CAUTION
⋅ As voltage between P/+, N/- becomes 830V or more temporarily at regeneration, make selection of DC power supply carefully.
100%: regenerative overvoltage protection operation value
⋅ [RB] appears on the operation panel and an alarm signal (RBP) is
output when 85% of the regenerative brake duty set in Pr. 70 is
reached. If the regenerative brake duty reaches 100% of the Pr.
70 setting, a regenerative overvoltage (E.OV1 to E.OV3) occurs.
⋅ The inverter does not shut off the output when the alarm signal is
output.
⋅ For the terminal used for the RBP signal output, assign the
function by setting "7" (positive logic) or "107" (negative logic) in
any of Pr. 190 to Pr. 196 (output terminal function selection).
REMARKS
⋅ The MRS signal can also be used instead of the X10 signal. (Refer to page 225.)
⋅ Refer to pages 37 to 46 for the connection of high-duty brake resistor (FR-ABR), brake unit, high power factor converter (FR-HC,
MT-HC) and power regeneration common converter (FR-CV).
⋅ When AC power is connected to terminal R/L1, S/L2, T/L3 during DC feeding with "2, 10 or 11" (DC feeding) set in Pr. 30, an
option alarm (E.OPT) occurs.
⋅ When DC feeding operation is performed with "2, 10, 11, 20, or 21" (DC deeding) set in Pr. 30, undervoltage protection (E.UVT)
and instantaneous power failure (E.IPF) are not detected.
CAUTION
⋅ The brake resister is not connectable to the 00770 or more inverter, the Pr. 70 setting is invalid.
⋅ Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) or Pr. 190 to Pr. 196 (output terminal
function selection) may affect the other functions. Please make setting after confirming the function of each terminal. (Refer to page
222)
WARNING
The value set in Pr. 70 must not exceed the setting of the brake resistor used.
Otherwise, the resistor can overheat.
♦ Parameters referred to ♦
Pr. 57 Restart coasting time Refer to page 254
Pr. 178 to Pr.189 (input terminal function selection) Refer to page 222
Pr. 190 to Pr.196 (output terminal function selection) Refer to page 230
Pr. 261 Power failure stop selection Refer to page 258
Ratio of brake duty
to the Pr. 70 setting
Regenerative
brake prealarm
(RBP)
OFF
ON
100%
85%
Tim
ON
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