Mitsubishi Electric FR-A700 Technical Manual page 76

(6) Power shut off signal (Y91)
The Y91 signal is output at occurrence of a fault due
to the failure of the inverter circuit or a fault caused
by a wiring mistake.
When using the Y91 signal, set 91 (positive logic) or
191 (negative logic) in any of [Pr. 190 to Pr. 196 Output
terminal function selection] to assign the function to the
output terminal.
The following table indicates the faults that will output
the Y91 signal. (Refer to page 97 for the fault
description.)
No. Alarm Description
1 Inrush current limit circuit fault (E.IOH)
2 CPU fault (E.CPU)
3
CPU fault (E.6)
4
CPU fault (E.7)
5 Parameter storage device fault (E.PE)
6
Parameter storage device fault (E.PE2)
7
24VDC power output short circuit(E.P24)
Operation panel power supply short circuit, RS-485
8
terminal power supply short circuit (E.CTE)
9 Output side earth (ground) fault overcurrent (E.GF)
10 Output phase loss (E.LF)
11 Brake transistor alarm detection (E.BE)
*1 Not available for
E700
*2 Not available for
D700
(7) Stall prevention
output signal (OL)
When the output current exceeds the stall prevention
operation level and stall prevention is activated, the stall
prevention operation signal (OL signal) turns ON for longer
than 100ms. When the output power falls to or below the
stall prevention operation level, the output signal turns OFF.
Stall prevention operation stops acceleration (makes
deceleration) during acceleration, makes deceleration
during constant speed, and stops deceleration (makes
acceleration) during deceleration.
The inverter does not trip even when the alarm signal is
output.
*1 If an overload status lasts long, an inverter trip (for
example electronic thermal O/L relay (E.THM)) may occur.
*2 When [Pr. 156] has been set to activate the fast-response
current limit (initial value), the [Pr. 22] setting should not be
higher than 170%. The torque will not be developed by
doing so.
[ Pr. 22 ]
OL
Stall prevention operation example
common
*2
*2
*2
*1 *2
*1 *2
(overcurrent) alarm
common
Output current
Output frequency
Constant
speed
Time
(8) Regenerative brake duty alarm output
signal (RBP)
common
[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.
(Refer to page 331 for details of [Pr. 70] .)
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] .
*1 For , setting can be made for the 75K or
F700
more.
Ratio of brake duty
to the [Pr. 70] setting
Regenerative
brake prealarm
(RBP)
(9) Electronic thermal O/L relay alarm output
signal (THP)
common
The alarm signal (THP) is output when the electronic
thermal value reaches 85% of the level set in [Pr. 9] or [Pr.
51]. If the regenerative brake duty reaches 100% of the [Pr.
9] setting, electronic thermal relay function protection
(E.THM/E.THT) activates.
For the terminal used for the THP signal output, assign the
function by setting 8 (positive logic) or 108 (negative logic)
in any of [Pr. 190 to Pr. 196 Output terminal function selection] .
100%: Electronic thermal relay function alarm operation value
Electronic thermal
relay function
operation level
Electronic thermal O/L
(THP)
relay alarm
(10) Fin overheat alarm output signal (FIN)
The alarm signal (FIN) is output when the
temperature becomes approximately 85% of the
heatsink overheat protection operation temperature.
Heatsink overheat (E.FIN) occurs if the temperature
reaches 100%.
For the terminal used for the FIN signal output,
assign the function by setting 26 (positive logic) or
126 (negative logic) in any of [Pr. 190 to Pr. 196 Output
terminal function selection].
Temperature
Heatsink overheat
protection
(100 %)
85%
Heatsink overheat
(FIN)
pre-alarm
E.FIN
69
SPECIFICATIONS
100%
85%
OFF ON ON
100%
85%
OFF ON ON
Time
common
ON
1
Time