Yamatake SDC35, User Manual

Page: 167 / 280

5-109
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
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Position proportional dead zone
• When the control output type is R1 (motor drive relay output), the display and
setting can be performed. However, if [C59: Motor long life mode] is set at “1”
(aiming at the service life of the potentiometer), the display and setting cannot be
performed.
The dead zone between the motor open and motor close in the position
proportional control is set.
For setting reference, this dead zone is changed when the manual output is output
at a constant rate. The value, which is obtained when the hunting of the motor is
stopped, is the minimum value of the dead zone.
If the exactly minimum value is set, the motor is always moved, causing the
service life of the motor to be shortened extremely.
The default setting before shipment is “10.0%”. With this default value used as
reference value, the setting is made correctly by taking the control results and
service life of the motor into consideration.
■
Motor long life mode
• When the control output type is R1 (motor drive relay output), the display and
setting can be performed.
• When this setting is set at “1” (aiming at service life of potentiometer), the values
set in [oUtL: Output variation limit] and [C58: Position proportional dead zone]
become invalid and the value suitable for aiming at the service life of the
potentiometer is calculated automatically.
■
Motor auto adjust
Handling Precautions
When [C57: Position proportional type] is set at “0” or “1,” be sure to
perform [C60: Motor auto adjust].
Item (Bank) Display Contents Initial value User level
Motor long life mode
(Setup bank) 0: Aiming at controllability
1: Aiming at service life of potentiometer 1 Basic,
Standard,
High function
Item (Bank) Display Contents Initial value User level
Motor auto adjust
(Setup bank) 0: Stop
1: Start 0 Basic,
Standard,
High function
Item (Bank) Display Contents Initial value User level
Position proportional dead
zone
(Setup bank) 0.5 to 25.0% 10.0% Basic,
Standard,
High function
Dead zone
* 1/4 of dead zone set value
* *
Relay on open
side ON Relay on close
side ON
Control output (%)
MFB (%)