Mitsubishi Electric FR-E700 Instruction Manual page 179

Parameter
Parameter
Func-
Name
tion
Stop-on contact
270
control selection
Stop-on contact
275 excitation current
low-speed multiplying factor
PWM carrier
276
frequency at stop-on contact
— 277 Refer to Pr. 22
278 Brake opening frequency
279 Brake opening current
Brake opening current
280
detection time
281 Brake operation time at start
282 Brake operation frequency
283 Brake operation time at stop
Automatic acceleration/
292
deceleration
286 Droop gain
287 Droop filter time constant
Tab. 6-1: Parameter overview (25)
FR-E700 SC EC/ENE
Incre- Initial Setting
ments Value Range
0
1 0
1
0–300%
0.1% 9999
9999
0–9
1 9999
9999
0.01 Hz 3 Hz 0–30 Hz
0.1% 130% 0–200%
0.1 s 0.3 s 0–2 s
0.1 s 0.3 s 0–5 s
0.01 Hz 6 Hz 0–30 Hz
0.1 s 0.3 s 0–5 s
1 0 0/1/7/8/11
0
0.1% 0%
0.1–100%
0.01 s 0.3 s 0–1 s
Description
Without stop-on contact control
Stop-on contact control
Usually set a value between 130% and
180%.
Set the force (holding torque) for stop-on
contact control.
No compensation.
Set a PWM carrier frequency for stop-on
contact control.
(Valid at the output frequency of 3 Hz or
less.)
As set in Pr. 72 "PWM frequency selection".
Set to the rated slip frequency of the motor
+ about 1.0 Hz.
This parameter may be set only if Pr. 278
Pr. 282.
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%.
Generally, set this parameter to about 0.1 to
0.3s.
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
0.2 s.
At this frequency, the brake opening request
signal (BOF) is switched off. Generally, set
this parameter to the Pr. 278 setting + 3 to
4 Hz.This parameter may be set only if Pr.
278 Pr. 282.
Pr. 292 = 7: Set the mechanical delay time
until the brake is closed + 0.1 s.
Pr. 292 = 8: Set the mechanical delay time
until the brake is closed + about 0.2 to 0.3
seconds.
Brake sequence function is made valid when a setting is "7 or 8".
Droop control is invalid
Set the drooping amount at the rated torque
as a percentage with respect to the rated
motor frequency.
Set the time constant of the primary delay
filter applied to the torque current.
Parameter overview
All
Para- Para-
Para-
meter- meter
meter
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