Toshiba Tosvert VF-AS1 User Manual Page 96
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E6581301
E-30
5
■ Gradient bias adjustment of analog monitor output
Here is an example of the adjustment of output from 0-20mA → 20-0mA, 4-20mA using the FM terminal.
H=, H= H=, H=
20
0 100%
0
(mA)
20
0 100%
0
(mA)
4
H=, H= H=, H=
large
(mA)
20
0
0
100%
small
(mA)
20
0
0
100%
4
+The analog output inclination can be adjusted using the parameter HO.
5.17 PWM carrier frequency
EH : PWM carrier frequency
H
: Random mode
H
: Carrier frequency control mode selection
[Parameter setting]
Title Function Adjustment range Default setting
EH PWM carrier frequency
~()kHz [Upper limits differ by
applicable motor capacity.]
According to model
H Random mode :Disabled, : Enabled
H
Carrier frequency control
mode selection
:Not decrease carrier frequency automatically
:Decrease carrier frequency automatically
:Not decrease carrier frequency automatically,
400V class supported
:Decrease carrier frequency automatically,
400V class supported
Note 1: If the PWM carrier frequency is set at 2.0kHz or above, it cannot be decreased below 2.0kHz during
operation. Changes made to decrease the carrier frequency below 2.0kHz take effect when operation is
restarted after it is stopped.
Note 2: If the parameter setting is 1.9kHz or less, you cannot change the setting at 2.0kHz or more. Changes made
to increase the carrier frequency to 2.0kHz or above take effect immediately.
Note 3: If
RV (V/f control mode selection) is set to , , , , or , the inverter sets a lower limit of 2.0kHz for
carrier frequencies.
Note 4: If you change the carrier frequency, you may need to reduce the inverter’s continuous output current.
⇒ Refer to Section 1.4.4, “Current reduction curve.”
Note 5: If the motor becomes overloaded when
H is set to or (carrier frequency not decreased
automatically), an overload trip occurs.
Note 6: For the setting
H= or to take effect, power needs to be turned off and then turned back on.
Note 7: When setting the carrier frequency (
EH) between and .kHz, you are recommended to set H
below 130%.
•Function
1) The sound tone of acoustic noise can be changed by adjusting the PWM carrier frequency. This parameter is
also effective in preventing the motor from resonating with its load machine or its fan cover.
2) In addition, this parameter reduces the electromagnetic noise generated by the inverter. Reduce the carrier
frequency to reduce electromagnetic noise. Note: Although the electromagnetic noise level is reduced, the
magnetic noise of the motor is increased.
3) The random mode reduces motor magnetic noise by changing the pattern of the reduced carrier frequency.
- E6581301Ԙ 1
- I. Safety precautions 3
- Danger 4
- II. Introduction 9
- E6581301 11
- - Contents 11
- 1. Read first 17
- 1.3.1 Names and functions 18
- 1) Outside view 18
- 1.3.2 Detaching the cover 25
- 1.4 Notes on the application 30
- 1.4.1 Motors 30
- 1.4.2 Inverters 32
- ■ Disposal 32
- Warning 33
- 1.4.4 Installation 35
- ■ Installation environment 35
- ■ How to install 36
- 2. Connection equipment 41
- 2.2 Standard connections 43
- 2.3 Description of terminals 48
- 3. Operations 55
- Status monitor mode 56
- Standard monitor mode 56
- (when the power is turned on) 56
- Setting monitor mode 56
- Deceleration 57
- 3.2.2 Panel operation 61
- 4.1 How to set parameters 64
- 5. Basic parameters 67
- CW : Automatic torque boost 69
- ■ Preset speed operation 74
- + The inverter is factory 75
- +To save the frequency 75
- HE and the set 75
- 5.6 Selecting control mode 77
- 2) Decreasing output voltage 78
- 3) Increasing starting torque 78
- 5.8 Base frequency 81
- 5.9 Maximum frequency 82
- Estimation of temperature 90
- 5.17 PWM carrier frequency 96
- Warning 97
- Surge killer 103
- 5.20 Standard default setting 107
- ( ) 109
- 5.22 EASY key function 110
- 6. Extended parameters 113
- 6.2 Input signal selection 115
- Internal command 116
- Servo lock status 120
- Command selected 123
- Operation frequency 125
- 6.8 DC braking 126
- 6.10 Jog run mode 131
- Jumping width 2 135
- Jumping width 1 135
- 6.14.1 Retry function 136
- 6.15 Drooping control 139
- Load portion torque input 141
- 6.20 PID control 145
- 6.22 Setting motor constants 148
- Setting motor constants 150
- 6.24 Torque control 152
- 6.25 Torque limit 154
- Positive torque 155
- Negative torque 155
- • Function 158
- 6.31 Pattern operation 163
- 6.32 Preset speed mode 165
- 6.33 Protection functions 166
- 6.33.3 Emergency stop 167
- H : Emergency stop 167
- 6.34 Override 175
- 6.35 Adjustment parameters 177
- Function 179
- ■ Example of setting 1 181
- ■ Example of setting 2 181
- 6.37 Tracing functions 183
- Trace data 1 184
- Trigger input 184
- 6.38 Communication function 187
- 1) 2-wire RS485 188
- 2) 4-wire RS485 190
- Host computer 191
- 6.39 My function 193
- 6.40 Traverse function 194
- 7.1 External operation 195
- B-contact switch 196
- Input terminal 196
- Inverter 196
- Programmable controller 197
- 7.2.4 Analog input filter 203
- 8.2 Monitoring the status 210
- 8.4.1 Trip code display 216
- 9.1.1 EMC directive 221
- Contact your supplier 222
- Use the 224
- EMC FILTER 226
- Ferrite core 1 227
- Shielded cable or [Note 1] 227
- Noise cut plate 228
- AIC, Fuse and Wire sizes 229
- Ｅ６５８１３００ 232
- Note on wiring 233
- 11. Table of parameters 239
- 12. Specifications 285
- E6581301 286
- ■ Outside dimensions and mass 289
- (Installation dimension) 290
- Before making a service call 295
- Cautions about cleaning 303
- 14.2 Periodical inspection 304
- ■ Check items 304
- 15. Warranty 307
- Warning 309
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