Mitsubishi Electric 800 Series Instruction Manual page 389

NOTE
• When Pr.30 = "0 or 2" and the X10 signal is not assigned to an input terminal, the MRS signal can be used as the X10 signal.
The logic of the signal depends on that of the MRS signal (normally open input when Pr.17 = "0 or 1", and normally closed
input when Pr.17 = "2 to 5").
• The MRS signal is valid from either of communication or external, but when the MRS signal is to be used as the Inverter run
enable (X10) signal, it must be input from external.
• When the terminal assignment is changed with Pr.178 to Pr.184 (Input terminal function selection), wiring may be mistaken
due to different terminal name and signal contents, or may affect other functions. Set parameters after confirming the function
of each terminal.
 Regenerative brake duty warning output and the warning signal (RBP
signal)
• When the regenerative brake duty reaches 85% of the Pr.70 setting, "RB" is indicated on the operation panel and the
Regenerative brake prealarm signal (RBP) signal is output. When it reaches 100% of the Pr.70 setting, it will become
regenerative overvoltage (E.OV[]).
• The inverter output is not shut off with the warning signal.
• For the terminal to be used for the RBP signal output, set "7" (positive logic) or "107" (negative logic) to one of Pr.190 to
Pr.196 (Output terminal function selection), and assign the function.
100%: Regeneration overvoltage protection operation value
NOTE
• When Pr.30 = "0" (initial value), "RB" is not indicated.
• Changing the terminal assignment using Pr.190 to Pr.196 (Output terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
 Connection of a brake resistor other than the FR-ABR, MRS type, and
MYS type
A brake resistor can be used with the FR-E820-0030(0.4K) to FR-E820-0330(7.5K), FR-E840-0016(0.4K) to FR-E840-
0170(7.5K), and FR-E860-0017(0.75K) to FR-E860-0120(7.5K).
388
15. (G) Control Parameters
15.8 Regenerative brake selection
Ratio of brake duty
to the Pr. 70 setting
Regenerative
brake pre-alarm
OFF
(RBP)
100%
85%
Time
ON ON