Mitsubishi Electric FR-E540 Instruction Manual Page 90
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PARAMETERS
77
4.2.12 Stall prevention (Pr. 22, Pr. 23, Pr. 66, Pr. 148, Pr. 149, Pr. 154)
Pr. 22 "stall prevention operation level"
Pr. 23 "stall prevention operation level
compensation factor at double speed"
Pr. 66 "stall prevention operation level reduction
starting frequency"
Pr. 148 "stall prevention operation level at 0V input"
Pr. 149 "stall prevention operation level at 10V input"
Pr. 154 "voltage reduction selection during stall prevention operation"
#
Set the output current level at which the output frequency is adjusted so that the inverter will not come to an
alarm stop due to overcurrent etc.
#
For high-speed operation at or over the more base frequency, acceleration may not be made because the
motor current does not increase. To improve the operation characteristics of the motor in such a case, the
stall prevention level in the high-frequency range can be reduced. This is effective for operation of a
centrifugal separator up to the high-speed range. Normally, set 60Hz
〈
50Hz
〉
in Pr. 66 and 100% in Pr. 23.
#
In order to provide torque during stall prevention, Pr. 154 is factory-set not to reduce the output voltage. The
setting of reducing the output voltage further decreases the probability of overcurrent trip occurrence.
#
The stall prevention operation level can be varied by entering the analog signal into terminal 1.
Parameter Number Factory Setting Setting Range Remarks
22 120% 0 to 150%, 9999 9999: Analog variable
23 9999 0 to 200%, 9999 9999: Constant according to Pr. 22
66 60Hz
〈
50Hz
〉
0 to 120Hz
148 120% 0 to 150% (Bias)
149 150% 0 to 150% (Gain)
154 1 0, 1
0: Output voltage reduced
1: Output voltage not reduced
Pr.22
Pr.23
Pr.66
120Hz
Output
frequency (Hz)
Stall prevention
operation level (%)
= 9999
Reduction ratio
compensation factor (%)
(150%)
(120%)
0%
0V
Pr.148
Pr.149
10(5)V
Input voltage (V)
(across frequency setting terminals 1-5)
(Pr.22=120%, Pr.23=100%, Pr.66=60Hz
)
Setting example
120
90
75
060
80 100
120
112.5
Pr.23
Stall prevention
operation level (%)
Stall prevention
operation level (%)
Output
frequency (Hz)
Pr. 9 "electronic thermal O/L relay"
Pr. 48 "second stall prevention
operation current"
Pr. 49 "second stall prevention
operation frequency"
Pr. 73 "0-5V/0-10V selection"
Pr. 156 "stall prevention operation
selection"
Related parameters
4
- FR-F520-0.75K to 55K 1
- FR-F540-0.75K to 55K(-EC) 1
- FR-F520-11K to 55K-NA 1
- FR-F540-11K to 55K-NA 1
- SAFETY INSTRUCTIONS 3
- 1. Electric Shock Prevention 3
- 2. Fire Prevention 3
- 3. Injury Prevention 3
- 4. Additional instructions 4
- (2) Wiring 4
- (3) Trial run 4
- (4) Operation 4
- (5) Emergency stop 5
- (7) Disposing of the inverter 5
- (8) General instructions 5
- CONTENTS 6
- Contents 6
- 6 SPECIFICATIONS 184 9
- 7 OPTIONS 192 9
- APPENDICES 195 9
- CHAPTER 1 10
- 1.1 Pre-Operation Information 11
- 1.2 Basic Configuration 12
- 1.3 Structure 13
- Front cover 14
- Inverter 14
- INSTALLATION AND WIRING 17
- 2.1 Installation 18
- 2.2 Wiring 20
- Notes on Grounding 24
- EC version 30
- NA and Japanese version 30
- Twin contact 38
- Low-level signal contacts 38
- 2.3 Other wiring 39
- 2.3.6 Peripheral devices 48
- 2.3.9 Earthing (EC version) 53
- CHAPTER 3 54
- OPERATION/CONTROL 54
- 3.1 Pre-Operation Information 55
- 3.1.2 Power on 57
- 3.2 Operation Panel 58
- 3.2.3 Monitoring 59
- 3.2.4 Frequency setting 59
- 3.2.6 Operation mode 61
- 3.2.7 Help mode 61
- 3.2.8 Copy mode 63
- 3.3.1 Parameter checking 64
- Simple mode parameter 65
- 3.3.2 Main parameter settings 66
- 3.4 Operation 68
- CONTROL PANEL 69
- 3.4.3 PU operation mode 70
- 3.4.4 Combined operation mode 71
- CHAPTER 4 72
- PARAMETERS 72
- 4 PARAMETERS 73
- 4.1 Parameter List 73
- Output frequency (Hz) 81
- Output voltage 81
- (Pr. 52 to Pr. 54, Pr. 158) 99
- With alarm 100
- PARAMETERS 101
- 4.2.29 Applied motor (Pr. 71) 110
- 4.2.31 Voltage input (Pr. 73) 112
- (Pr. 75) 113
- Time (Minute) 131
- Minute (Second) 131
- (Pr. 135 to Pr. 139) 140
- Set time (s) 149
- Overload status (OL output) 149
- OL output signal 149
- (Pr. 170, Pr. 171) 151
- Pr. 516 Pr. 504 163
- Pr. 502 + Pr. 503 163
- (Pr. 902 to Pr. 905) 170
- MON EXT PU 172
- PROTECTIVE FUNCTIONS 176
- 5 PROTECTIVE FUNCTIONS 177
- 5.1 Errors (Alarms) 177
- (2) Minor fault 184
- (3) Warnings 184
- 5.1.4 Alarm code output 187
- 5.1.5 Resetting the inverter 187
- 5.2 Troubleshooting 188
- 5.3.2 Check items 190
- 5.3.3 Periodic inspection 190
- 5.3.5 Pressure test 191
- <Preparation> 193
- <Checking method> 193
- Fan cover 194
- Fan connectors 194
- <Example: FR-F540-5.5K> 194
- 5.3.8 Inverter replacement 195
- CHAPTER 6 198
- SPECIFICATIONS 198
- 6 SPECIFICATIONS 199
- 6.1 Standard Specifications 199
- 6.1.2 Common specifications 201
- 95 (3.74) 203
- CHAPTER 7 207
- 7 OPTIONS 208
- 7.1 Option List 208
- • Inboard options 210
- APPENDICES 211
- Appendix 1 Data Code List 212
- REVISIONS 217
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