Instruction manual
Table Of Contents
- SAFETY INSTRUCTIONS
- CONTENTS
- CHAPTER 1 OUTLINE
- CHAPTER 2 INSTALLATION AND WIRING
- CHAPTER 3 OPERATION/CONTROL
- CHAPTER 4 PARAMETERS
- CHAPTER 5 PROTECTIVE FUNCTIONS
- 5.1 Errors (Alarms)
- 5.2 Troubleshooting
- 5.2.1 Motor remains stopped.
- 5.2.2 Motor rotates in opposite direction.
- 5.2.3 Speed greatly differs from the setting.
- 5.2.4 Acceleration/deceleration is not smooth.
- 5.2.5 Motor current is large.
- 5.2.6 Speed does not increase.
- 5.2.7 Speed varies during operation.
- 5.2.8 Operation mode is not changed properly.
- 5.2.9 Operation panel (FR-DU04) display is not provided.
- 5.2.10 POWER lamp is not lit.
- 5.2.11Parameter write cannot be performed
- 5.3 Precautions for Maintenance and Inspection
- CHAPTER 6 SPECIFICATIONS
- CHAPTER 7 OPTIONS
- APPENDICES
- REVISIONS
PARAMETERS
149
z
zz
z Power failure-time deceleration-to-stop function (Pr. 261 to Pr. 266)
Pr. 261 "power failure stop selection"
Pr. 262 "subtracted frequency at deceleration
start"
Pr. 263 "subtraction starting frequency"
Pr. 264 "power-failure deceleration time 1"
Pr. 265 "power-failure deceleration time 2"
Pr. 266 "power-failure deceleration time switch-over frequency"
When an instantaneous power failure or undervoltage occurs, the inverter can be decelerated to a stop.
z Remove the jumpers across terminals R-R1 and terminals S-S1, and connect terminal R1 to terminal P,
and terminal S1 to terminal N.
Parameter
Number
Factory
Setting
Setting Range
261 0 0, 1
262 3Hz 0 to 20Hz
263 60Hz 0 to 120Hz, 9999
264 5 s 0 to 3600/0 to 360 s
265 9999 0 to 3600/0 to 360 s, 9999
266 60Hz 0 to 400Hz
Pr.262
Pr.264
Pr.265
Pr.266
Time
Power supply
Output frequency (Hz)
Switch-over frequency
Subtracted frequency
Power-failure deceleration time 1
Power-failure deceleration time 2
<Setting>
Parameter
Number
Setting Description
0
Coasting to stop
When undervoltage or power failure occurs, the inverter output is shut off.
261
1 When undervoltage or power failure occurs, the inverter is decelerated to a stop.
262 0 to 20Hz
Normally, operation can be performed with the factory setting unchanged. The frequency can
be adjusted within the range 0 to 20Hz according to the load specifications (inertia moment,
torque).
0 to 120Hz
If the output frequency at occurrence of undervoltage or power failure is equal to or greater
than the frequency set in Pr. 263, deceleration starts at the value found by subtracting the
frequency set in Pr. 262 from the output frequency at that time. If the output frequency at
occurrence of undervoltage or power failure is less than the frequency set in Pr. 263, the
inverter is decelerated to a stop, starting at the output frequency at that time.
263
9999
The inverter is decelerated to a stop, starting at the value found by subtracting the frequency
set in Pr. 262 from the output frequency at occurrence of undervoltage or power failure.
Pr. 21 = 0 0 to 3600 s
264
Pr. 21 = 1 0 to 360 s
Set a deceleration slope down to the frequency set in Pr. 266. Set the slope in terms of time
required for deceleration from the frequency set in Pr. 20 to 0Hz.
Pr. 21 = 0 0 to 3600 s
Pr. 21 = 1 0 to 360 s
Set a deceleration slope below the frequency set in Pr. 266. Set the slope in terms of time
required for deceleration from the frequency set in Pr. 20 to 0Hz.
265
9999 Same slope as in Pr. 264
266 0 to 400Hz
Set the frequency at which the deceleration slope is is switched from the Pr. 264 setting to
the Pr. 265 setting.
Pr. 12 "DC dynamic brake voltage"
Pr. 20 "acceleration/deceleration
reference frequency"
Related parameters
4