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127
Parameter List
Parameter List
4
DRIVING THE MOTOR
Stop-on contact control
270
Stop-on contact/load torque
high-speed frequency
control selection
10
0
Without stop-on contact control and load torque high-
speed frequency control
1 Stop-on contact control
2 Load torque high speed frequency control
3
Stop-on contact + load torque high speed frequency
control
275
Stop-on contact excitation
current low-speed
multiplying factor
0.1% 9999
0 to 1000%
Usually set a value between 130% and 180%.
Set the force (holding torque) for stop-on-contact
control.
9999 No compensation.
276
PWM carrier frequency at
stop-on contact
1 9999
0 to 9
Set a PWM carrier frequency for stop-on-contact
control.
(Valid at the output frequency of 3Hz or less.)
9999 As set in Pr. 72 PWM frequency selection.
Brake sequence function
278
Brake opening frequency
0.01Hz 3Hz 0 to 30Hz
Set to the rated slip frequency of the motor + about
1.0Hz.
This parameter may be only set if
Pr. 278
≤
Pr. 282
.
279
Brake opening current
0.1% 130% 0 to 220%
Generally, set this parameter to about 50 to 90%. If
the setting is too low, the load is liable to drop due to
gravity at start.
Suppose that the rated inverter current is 100%.
280
Brake opening current
detection time
0.1s 0.3s 0 to 2s Generally, set this parameter to about 0.1 to 0.3s.
281
Brake operation time at
start
0.1s 0.3s 0 to 5s
Pr. 292
= 7: Set the mechanical delay time until the
brake is loosened.
Pr. 292
= 8: Set the mechanical delay time until the
brake is loosened + about 0.1 to 0.2s.
282
Brake operation frequency
0.01Hz 6Hz 0 to 30Hz
At this frequency, the brake opening request signal
(BOF) is switched off. Generally, set this parameter
to the
Pr. 278
setting + 3 to 4Hz.
Setting is enabled only when
Pr. 282
≥
Pr. 278
.
283
Brake operation time at
stop
0.1s 0.3s 0 to 5s
Pr. 292
= 7: Set the mechanical delay time until the
brake is closed + 0.1s.
Pr. 292
= 8: Set the mechanical delay time until the
brake is closed + about 0.2 to 0.3s.
284
Deceleration detection
function selection
10
0 Deceleration is not detected.
1
If deceleration is not normal during deceleration
operation, the inverter fault (E.MB2) is provided to
trip the inverter and turn OFF the brake opening
request signal (BOF).
285
Overspeed detection
frequency
0.01Hz 9999
0 to 30Hz
When brake sequence function is valid under
encoder feedback control
If (detected frequency) - (output frequency) >
Pr. 285
under encoder feedback control, the inverter fault
(E.MB1) is provided to trip the inverter and turn OFF
the brake opening request signal (BOF).
9999 Overspeed is not detected.
292
Automatic acceleration/
deceleration
10
0, 3, 5 to 8,
11
Brake sequence function is valid when a setting is "7
or 8".
Speed deviation excess detection
285
Excessive speed deviation
detection frequency
0.01Hz 9999
9999 Without speed deviation excessive
0 to 30Hz
If the difference (absolute value) between the speed
command value and actual speed exceeds the Pr.
285 Speed deviation excess detection frequency setting
for longer than the time set in Pr. 853 Speed deviation
time during speed control under vector control, speed
deviation excessive occurs and error "E. OSD"
appears, resulting in a stop.
853
Speed deviation time
0.1s 1s 0 to 100s
Func
t
ion
Parameter
Name
Incre
ments
Initial
Value
Range Description
Related
parameters
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Sensorless Vector
Vector
Vector
Vector
Vector
Vector