Sanken SVCO6, Инструкция по эксплуатации, Страница: 250 / 326

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7-3 Description of Functions
F5001 (motor poles, voltage and capacity)
F6010 (speed control ASR proportional gain)
F6011 (speed control ARS integral time)
F8119 Zero-servo control function selection
F8120 Zero speed
F8121 Zero speed servo complete width
In speed control (with sensor) mode (F1001=3), this function can carry out the zero speed command control when the
motor is stopped.
Code No. Function Name Date Content
Setting
Resolution
Factory Presets
F8119
Zero-servo control
function selection
0: Inactive
1: Active
2: Switching zero-servo on
external terminal (P0)
1 0
F8120 Zero speed 1-3000rpm 1rpm 30
F8121
Zero servo complete
width
5-10000 pulse(s) 1 pulse 10
The followings are setting sequences of zero-servo function.
Sequence 1: Setting of selection of zero-servo control function (F8119)
Please set F8119 according to the zero-servo mode in use.
When F8119=0 (inactive, factory preset):
No zero-servo function. (Normal motor will stop)
When F8119=1 (active):
After the run command is OFF, it will switch into position control mode when the speed decelerates to 0
(set by F8120) and carry out stop action. When running command (FR, RR) is ON, it will run in the speed
control mode again. (The inverter will keep running even in zero-speed status)
※
When direction is switched during signal switching, flying start in reverse run and other actions, the
zero-servo function will not work and keep running.
※
When the speed is below zero, the zero-servo function will not work even though the running command
is input (standby status).
When F8119=2 (zero-servo switching on external terminal (P0)):
Send zero speed command (P0) to multi-function terminal DI1-DI8 (F1414-F1421): set data = 57, the
multi-function input terminal will become the external zero-servo command terminal. When P0 terminal is
ON and the speed is below zero (F8120), it will switch into zero-servo action. Furthermore, when P0
terminal is ON, turn ON the inverter running signal, and the zero-servo will be carried out.
※
When direction is switched during signal switching, flying start in reverse run and other actions, the
zero-servo action will be carried out below zero if the P0 terminal is ON. When switching the running
direction, please turn the P0 terminal OFF.
Note: When completely stopping inverter from zero speed status (gate OFF), please turn the MBS terminal of (multi-function
input terminal function set to ―5‖) free run stopping terminal on the main control panel to ON.
Sequence 2: Setting of zero speed (F8120)
Set the speed when starting zero speed control by F8120, the unit is rpm, minimum scope is 1rpm and the
maximum value is 3000rpm.
Example) When carrying out zero speed control below 10rpm,
F8120=10rpm
Note: Attentions must be paid that during zero-servo (speed) switching in high-speed rotation; it may cause over-current &
over-voltage and result in the shutdown alarm of the inverter. Please set the zero-speed setting in low speed as possible.
Sequence 3: Setting of zero servo complete width (F8121)
When the position deviation is smaller than the value specified in F8121, the zero-servo complete signal
will be output. The zero-servo complete signal will not be output when the inverter is in absolute stop (gate
& OFF) status.
Example) When multi-function output terminal DO2 is set to the zero-servo complete signal for complete
width of 20 pulses,
F1510 (output terminal DO2 selection) =31
F8121=20 pulses
Note: If the complete width is reduced, the complete signal ON/FF superposition may happen. Therefore certain width must
be specified when setting the width value.