Sanken SVCO6, Instruction Manual, Page: 108 / 326

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7-3 Description of Functions
Note 6: In torque control mode, the stop function has nothing to do with the setting of function code F1111 (braking
method), and it is free run stop.
Note 7: Motor parameters will also be used for torque calculation in torque control under speed sensor mode, so the torque
control accuracy may not be reached if the motor parameter setting (Function Code No. 5000 segment) is
inappropriate. If the motor parameters are known, be sure to set the motor parameters. If the motor parameters
are unknown, please carry out auto tuning.
●
F1001=6: Position control mode
Position control mode is a mode which uses PG sensor for position control.
• The load position is controlled according to the external input pulse command. The optional board (SC-PG) is
required for pulse command input.
• Some functions such as positioning control (Point to Point) etc. which do not need pulse command input, can be
achieved under the standard configuration.
(Related function codes)
See description of F8100 part for basic setting of PG sensor.
Notes on position control mode:
Note 1: When setting position control mode, the following conditions shall be met.
①
Operation command
should be set by
external terminal (F1101 = 2).
②
One inverter drives one motor.
③
The motor must be a Sanken designated 2, 4, 6 or 8-pole 3-phase induction motor or a similar motor.
④
To inverter rated, motor capacity that can drive is one level lower or 2 levels lower the motor or standard
applicable motor.(Only 8 pole motors, 3 levels lower motor can be chosen.)
⑤
The wiring length between the inverter and the motor shall be less than 30 m. If the wiring length exceeds 30 m,
conduct auto measurement of the motor parameters in advance using the auto tuning mode 2. And, for vector
control, the maximum wiring length shall not exceed 100m.
Note 2: The setting of F5001 shall not be in violation of requirements of
① ③ ④
in Note 1. Please set the parameters
according to the above requirements. And, the inverter action and control characteristics cannot be guaranteed
where the F5001's setting does not match ratings of the connected motor.
Note 3: Please correctly configure the basic settings of PG sensor. The motor can not be normally controlled if incorrectly
configured. In addition, in position control, the F8125: PG pulse A-B polarity reversal can not be used.
Note 4: Position control mode can be set only when the operation command set to external terminal (F1101 = 2). Also, the
operation panel’s operation control authorization switching is inactive.
Note 5: Others
1. Depending on the position deviation, the output frequency can be up to the selected upper frequency limit
(F1007, F1316, and F1317). Configure appropriate settings based on the actual situation of the motor and load
device.
2. In position control, the acceleration/deceleration time (F1012-F1019) is inactive.
3. When the operation signal is OFF, it will stop by free run regardless of the function code setting.
F1001 = 10 and 11: auto tuning modes 1 and 2
· Auto tuning is an integrated function inside the inverter, which auto detects connected motor‘s parameters.
This function applies to the motor of which the parameters are completely unknown, and is a very effective
detection function for speed sensorless vector control when the wiring length between the inverter and the
motor exceeds 30m.
· The auto tuning function has two modes.
1. Auto tuning mode 1 (F1001 = 10): a mode for detecting motor parameters when the motor shaft is not
rotating. It is used when auto tuning mode 2 can not be executed.
2. Auto tuning mode 2 (F1001 = 11): a mode for detecting motor parameters by rotating motor shaft.
* See 6-2-6 for details and sequence of auto tuning.