Sanken SVCO6, Инструкция по эксплуатации, Страница: 252 / 326

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7-3 Description of Functions
(2) Example 2 of zero-servo action: F8119=2 (zero-servo switching by external terminal (PO))
Only when P0 is ON and the speed is below zero speed (set by F8120), the zero-servo function is effective. When
running command (FR, RR) is ON, the action will normally be speed control if P0 signal is off.
Note 1: When stopping the inverter completely from zero speed status (gate OFF), please set the free run terminals (MBS) of
multi-function terminals on main control panel to ON under the OFF status of running signal. Furthermore, when
running signal is OFF, the inverter can also be stopped completely (gate OFF).
Note 2: Even though the inverter is completely stopped (gate OFF status), the position deviation will be cumulated in the
position control action when PO terminal is ON.
Note 3: When inputting command pulse during zero-servo, run the inverters with a position control mode according to the
input pulse. (An optional board of SC-PG is required for command pulse inputting)
Note 4: Please note that when switching the zero-servo (speed) under high-speed rotation, there may be an over-current or
over-voltage causing an inverter shutdown alarm. When switching from speed control to position control, please
carry out this action under low speed as possible.
*
For positioning complete signal and positioning complete width, please refer to the following position control
function.
Forward run
Zero speed
Zero speed
Reverse run
Gate OFF
Motor speed waveform
Motor
control mode
Position deviation
Gate ON signal
Speed control Speed control Position control Position control
Zero-servo complete width
Zero-servo complete width
Positioning complete range
Positioning complete range
Zero-servo complete
Positioning complete