User manual

10 Functions and operations in the speed control mode
−77−
6.
Set the offset.
If there is even a slight margin of error in the voltage value, the speed command value may not become
0 r/min even when the voltage command specifies 0 V (minimum value). In this case, adjust the offset
using one of the two methods described below.
Automatic adjustment
1. Set the application parameter for analog input signal automatic offset [APP-2-06] to “Enable.”
2. Input 0 V to the analog input terminal (pin 5 of CN6).
3. Apply the offset for analog torque input using the OPX-2A or MEXE02.
Adjustment using a parameter
1. Set the application parameter for analog input signal automatic offset [APP-2-06] to “Disable.”
2. Set the offset voltage in the application parameter for analog speed command offset voltage
[APP-2-02].
7.
Set the speed command value using an external potentiometer or external DC voltage.
8.
Set the acceleration/deceleration time using the
internal potentiometer VR2.
The acceleration time and deceleration time are the
same.
Setting range: 5 to 10000 ms / (1000 r/min)
Factory setting: 5 ms / (1000 r/min)
VR2
Setting example
Setting
example
Analog speed
command gain
[APP-2-00]
Analog speed
command clamp
[APP-2-01]
Analog speed
command offset
voltage [APP-2-02]
Description
① 550 r/min 0 r/min 0 V
The speed command value per 1 V of voltage
command becomes 550 r/min.
② 10 r/min 0 r/min 0 V
The speed command value per 1 V of voltage
command becomes 10 r/min.
③ 550 r/min 0 r/min 1 V
The home position of voltage command becomes
1 V. The gain of speed command value is the
same as in example①.
④ 550 r/min 10 r/min 0 V
If the speed command value is set less than
10 r/min of the voltage command (less than 1 V),
the speed command value will be 0 r/min.
Speed command [r/min]
5500
100
Voltage
command [V]
- 10
10
- 100
- 5500
3
1
2
Speed command [r/min]
5500
10
Voltage
command [V]
- 10
10
- 10
- 5500
4