Mitsubishi Electric FR-A700 Series, Техническое руководство, Страница: 76 / 550

69
1
S
PECIFI
C
A
T
IONS
SPECIFICATIONS
(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.)
*1 Not available for
*2 Not available for
(7) Stall prevention (overcurrent) alarm
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.
(8) Regenerative brake duty alarm output
signal (RBP)
[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 ] .
(9) Electronic thermal O/L relay alarm output
signal (THP)
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 ] .
(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 ].
No. Alarm Description
1 Inrush current limit circuit fault (E.IOH)
2 CPU fault (E.CPU)
3
CPU fault (E.6)
*2
4 CPU fault (E.7)
*2
5 Parameter storage device fault (E.PE)
6
Parameter storage device fault (E.PE2)
*2
7
24VDC power output short circuit(E.P24)
*1 *2
8
Operation panel power supply short circuit, RS-485
terminal power supply short circuit (E.CTE)
*1 *2
9 Output side earth (ground) fault overcurrent (E.GF)
10 Output phase loss (E.LF)
11 Brake transistor alarm detection (E.BE)
*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.
common
E700
D700
common
Stall prevention operation example
[
Pr. 22
]
OL
Output current
Output frequency
Acceleration
Constant
speed
Decele
ration
Time
*1 For , setting can be made for the 75K or
more.
common
F700
Ratio of brake duty
to the [
Pr. 70 ] setting
Regenerative
brake prealarm
(RBP)
OFF
ON
100%
85%
Time
ON
common
OFF ON
100%
85%
Time
ON
Electronic thermal
relay function
operation level
Electronic thermal O/L
relay alarm
(THP)
100%: Electronic thermal relay function alarm operation value
common
85%
(100 %)
(FIN)
E.FIN
ON
Heatsink overheat
protection
Heatsink overheat
pre-alarm
Temperature