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Motor brake and stop operation
(6) Power supply specification at DC feeding
(7) Regenerative brake duty alarm output and alarm signal (RBP signal) (FR-F720-03160 (FR-
F740-01800) or more)
(8) Reset selection at main circuit power ON (Pr. 30)
At initial status, inverter resets at main circuit power ON when using separated power source for main circuit (R, S, T)
and control circuit (R1, S1). With this parameter, you can select to perform inverter reset or not at main circuit power
ON.
• Pr. 30 = "0, 1, 20, 21" ..................... With inverter reset (Settings of "20 and 21" are for power failure)
• Pr. 30 = "100, 101, 120, 121" ......... Without inverter reset
* Settings of Pr. 30 = "2 (for FR-HC, MT-HC and FR-CV), 10 and 11(for DC feeding mode 1)" are for DC power supply,
and therefore reset selection is not available.
200V class
Rated input DC voltage 283VDC to 339VDC
Permissible fluctuation 240VDC to 373VDC
400V class
Rated input DC voltage 537VDC to 679VDC
Permissible fluctuation 457VDC to 740VDC
CAUTION
⋅ As voltage between P/+ and N/- becomes 415VDC (830VDC) 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 122.)
⋅ Refer to pages 36 to 44 for connection of the 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, 21, 120 or 121" (DC feeding) set in Pr. 30, undervoltage protection
(E.UVT) and instantaneous power failure (E.IPF) are not detected.
CAUTION
⋅ Changing the terminal assignment using Pr. 178 to Pr. 189 (input terminal function selection) may affect the other functions. Please
set parameters after confirming the function of each terminal.
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 152
Pr. 178 to Pr.189 (input terminal function selection) Refer to page 122
Pr. 190 to Pr.196 (output terminal function selection) Refer to page 128
Pr. 261 Power failure stop selection Refer to page 156
Ratio of brake duty
to the Pr. 70 setting
Regenerative
brake prealarm
(RBP)
OFF
ON
100%
85%
Tim
ON