Mitsubishi Electric FR-E540 Instruction Manual Page 98
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PARAMETERS
85
4.2.21 Second stall prevention (Pr. 48, Pr. 49)
Pr. 48 "second stall prevention operation current"
Pr. 49 "second stall prevention operation
frequency"
#
The stall prevention operation level can be changed within the range from 0Hz to the frequency set inPr. 49.
#
The stall prevention operation level can be changed by switching the external input signal on-off.
Parameter
Number
Factory
Setting
Setting Range
48 120% 0 to 150%
49 0 0 to 120Hz, 9999
Running frequency
Stall prevention
operation curren
t
Acceleration
Deceleration/constant speed
Pr.49
Pr.48
<Setting>
•
Set the stall prevention operation level in Pr. 48.
•
Refer to the following list to set values in Pr. 49.
Pr. 49 Setting Operation
0 Second stall prevention function is not activated.
0.01Hz to 120Hz
Second stall prevention function is activated according to the
frequency as shown above.
9999
Second stall prevention function is activated according to the RT signal.
RT signal ON............... Stall level Pr. 48
RT signal OFF ............. Stall level Pr. 22
Note: 1. When Pr. 49 = "9999", setting "0" in Pr. 48 disables the stall prevention function when the RT
signal switches on. When Pr. 49
≠
"9999" and Pr. 48 = "0", the stall prevention operation level is
0% when the frequency is equal to or less than the value set in Pr. 49.
2. When the stall prevention operation level signal input function is selected (Pr. 22 = 9999), setting
"9999" in Pr. 49 changes the stall prevention operation level from the value of the stall prevention
operation level signal (terminal 1 input) to the value set in Pr. 48 when the RT signal switches on.
3. When the RT signal is on, the second functions such as second acceleration/deceleration time
are also selected.
4. When terminal assignment is changed using Pr. 180 to Pr. 186, the other functions may be
affected. Check the functions of the corresponding terminals before making setting.
CAUTION
Do not set a too small value to the second stall prevention operation current.
Otherwise, torque generated will decrease.
Pr. 50
%
%%
%
Refer to Pr. 42.
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. 154 "voltage reduction selection
during stall prevention operation"
Pr. 180 to Pr. 186
(input terminal function 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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