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
157
Note: 1. By increasing the Pr. 275 setting, the low-speed (stop-on-contact) torque increases, but the
overcurrent alarm (E.OCT) may occur or the machine may oscillate in a stop-on-contact state.
2. The stop-on-contact function is different from the servo lock function, and if used to stop or hold a
load for an extended period, the function can cause the motor to overheat. After a stop,
immediately reset this function and use a mechanical brake to hold the load.
3. Under the following operating conditions, the stop-on-contact function is made invalid:
·
PU operation
·
Programmed operation
·
PU + external operation
·
PID control function operation
·
Remote setting function operation
·
Orientation control function operation
·
Jog operation
<Setting>
1) Select advanced magnetic flux vector control and set "1" or "3" in Pr. 270.
2) Refer to the following list and set the parameters:
Parameter
Number
Name Setting Description
6
Multi-speed setting (low
speed)
0 to 400Hz
Set the output frequency for stop-on-contact control.
The frequency should be as low as possible (about 2Hz). If it is set
to more than 30Hz, the operating frequency will be 30Hz.
When stop-on-contact control is to be exercised during PLG
feedback control, PLG feedback control is made invalid when the
inverter enters the stop-on-contact control mode.
48
Second stall prevention
operation current
0 to 200% Set the stall prevention operation for stop-on-contact control.
0 to 1000%
Usually set a value between 130% and 180%.
Set the force (holding torque) for stop-on-contact control.
275
Stop-on-contact exciting
current low-speed
multiplying factor
9999 No compensation
0 to 15
Set a PWM carrier frequency for stop-on-contact control.
(Valid at the frequency of 3Hz or less)
276
Stop-on-contact PWM
carrier frequency
9999 Conforms to the Pr. 72 "PWM carrier frequency selection".
·
Function switch-over when stop-on-contact control is selected
Operation Mode
(External)
Ordinary Operation Stop-on-Contact Control
RL RT RL RTRL, RT terminals
Main function
Either is OFF ON ON
Remarks
Output frequency for a
stop on contact
Multi-speeds
0 to 5V, 0 to 10V
4 to 20mA
Pr. 6 "low-speed frequency"
Stall prevention operation
level
Pr. 22 (stall prevention
operation level)
Pr. 48 (second stall prevention operation
current)
When RL and RT are on,
Pr. 49 (second stall prevention
operation frequency) is invalid.
Exciting current low-speed
multiplying factor
The current is compensated for by the
multiplying factor (0 to 1000%) set in
Pr. 275 before RL and RT are switched
on.
Carrier frequency
Pr. 72 "PWM frequency
selection"
(0 to 15)
Pr. 276 (stop-on-contact PWM carrier
frequency)
(0 to 15, 9999)
Fast-response current limit Yes No
4