Problem
Parameter No.
Corrective Action
Default Value
Suggested
Setting
• Overvoltage trips when
accelerating, decelerating, or
during sudden speed or load
changes.
AFR Time Constant 2
(n2-03)
• If overvoltage trips occur, gradually increase this
setting by 50 ms.
• If response is slow, gradually reduce this setting
by 10 ms.
Note:
Ensure that n2-02 ≤ n2-03. When making
adjustments to n2-03, increase the value of C4-06
(Torque Compensation Primary Delay Time 2)
proportionally.
750 ms
750 to 2000 ms
Torque Compensation
Primary Delay Time
Constant 2 (C4-06)
• If overvoltage trips occur, gradually increase this
setting by 10 ms and check the performance.
• If response is slow, gradually reduce this setting
by 2 ms and check the performance.
Note:
Ensure that C4-02 ≤ C4-06. When changing
C4-06 (Torque Compensation Primary Delay Time
Constant 2), increase the value of n2-03
proportionally.
150 ms
150 to 750 ms
• Poor motor torque and speed
response
• Motor hunting and oscillation.
Torque Compensation
Primary Delay Time
Constant 1
(C4-02)
• To improve motor torque speed response,
gradually reduce this setting by 2 ms and check
the performance.
• If motor hunting and oscillation occur, gradually
increase this setting by 10 ms.
Note:
Ensure that C4-02 ≤ C4-06. When making
adjustments to C4-02, increase n2-02 (AFR Time
Constant) proportionally.
20 ms
<1>
20 to 100 ms
• Poor speed response and stability
Slip Compensation
Primary Delay Time
Constant (C3-02)
• If response is slow, gradually decrease the setting
by 10 ms.
• If speed is unstable, gradually increase the setting
by 10 ms.
200 ms
<1>
100 to 500 ms
• Poor speed precision
Slip Compensation
Gain (C3-01)
• If speed is too slow, gradually increase the setting
by 0.1 ms.
• If speed is too fast, gradually decrease the setting
by 0.1 ms.
1.0
<1>
0.5 to 1.5
• Motor noise
• Control motor hunting and
oscillation occur at speeds below
10 Hz.
Carrier Frequency
Selection (C6-02)
• If there is too much motor noise, the carrier
frequency is too high.
• If motor hunting and oscillation occur at low
speeds, reduce the carrier frequency.
• The default setting for the carrier frequency
depends on the drive capacity (o2-04) and Drive
Duty Selection (C6-01).
Dep. on drive
capacity
0 to the default
setting
• Poor motor torque at low speeds
• Poor speed response
• Motor instability at motor start.
Mid Output Voltage A
(E1-08)
Minimum Output
Voltage (E1-10)
• If motor torque and speed response are too slow,
increase the setting.
• If the motor exhibits excessive instability at start-
up, reduce the setting.
Note:
The default value is for 200 V class units.
Double this value when using a 400 V class drive.
When working with a relatively light load,
increasing this value too much can create an
excessively high of a torque reference.
E1-08: 12.0 V
<1>
E1-10: 2.5 V
<1>
Initial ±2 V
<1> Default settings change when the Control Method is changed (A1-02) or a different V/f pattern is selected using parameter E1-03. The default
setting shown is for V/f Control.
When using OLV Motor Control, leave the torque compensation gain (C4-01) at its default setting of 1.00. To increase
speed precision during regeneration in OLV Motor Control, enable slip compensation during regeneration (C3-04 = “1”).
u
Motor Hunting and Oscillation Control Parameters
In addition to the parameters discussed on page
144
, the following parameters indirectly affect motor hunting and
oscillation.
Table 6.3 Parameters that Affect Control Performance in Applications
Name (Parameter No.)
Application
Dwell Function
(b6-01 through b6-04)
Prevents motor speed loss by maintaining the output frequency when working with heavy loads or when
there is powerful backlash on the machine side.
Accel/Decel Time
(C1-01 through
C1-09)
Adjusting accel and decel times will affect the torque presented to the motor during acceleration or
deceleration.
S-Curve Characteristics
(C2-01 through
C2-04)
Prevents shock at the beginning and end of acceleration and deceleration.
Jump Frequency
(d3-01 through d3-04)
Skips over the resonant frequencies of connected machinery.
Analog Filter Time Constant
(H3-13)
Prevents fluctuation in the analog input signal due to noise.
Stall Prevention (L3-01 through L3-06,
L3-11)
• Prevents motor speed loss and overvoltage. Used when the load is too heavy and also during sudden
acceleration/deceleration.
• Adjustment is not normally required because Stall Prevention is enabled as a default. Disable Stall
Prevention during deceleration (L3-04 = “0”) when using a braking resistor.
6.2 Motor Performance Fine Tuning
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
225
6
Troubleshooting
7/16/2008-13:23
Содержание V1000
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Страница 27: ...1 4 Component Names This Page Intentionally Blank 26 SIEP C710606 20 OYMC AC Drive V1000 User Manual ...
Страница 37: ...2 2 Mechanical Installation This Page Intentionally Blank 36 SIEP C710606 20 OYMC AC Drive V1000 User Manual ...
Страница 63: ...3 12 Wiring Checklist This Page Intentionally Blank 62 SIEP C710606 20 OYMC AC Drive V1000 User Manual ...
Страница 221: ...5 11 U Monitor Parameters This Page Intentionally Blank 220 SIEP C710606 20 OYMC AC Drive V1000 User Manual ...
Страница 273: ...7 5 Drive Replacement This Page Intentionally Blank 272 SIEP C710606 20 OYMC AC Drive V1000 User Manual ...
Страница 287: ...8 6 Connecting an Option Card This Page Intentionally Blank 286 SIEP C710606 20 OYMC AC Drive V1000 User Manual ...
Страница 297: ...A 6 Drive Derating Data This Page Intentionally Blank 296 SIEP C710606 20 OYMC AC Drive V1000 User Manual ...
Страница 379: ...C 13 Self Diagnostics This Page Intentionally Blank 378 SIEP C710606 20 OYMC AC Drive V1000 User Manual ...
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