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2.
When the analog input (1) characteristics selection is
0 to +10V input (b-17 = 1)
When 0V is input, the characteristics are the setting of the analog input (1) speed/voltage lower limit
(b-19). When +10V is input, the characteristics are the setting of the analog input (1) speed/voltage upper
limit (b-18) (Figure 2-1). However, those are effective for positive voltages only. Negative voltages are
limited to the analog input (1) speed/voltage lower limit (b-19) (or 0 when a negative value is set to the
analog input (1) speed/voltage lower limit (b-19)) (Figure 2-2).
Incidentally, when the operation mode selection is speed control mode (i-07 = 0) and the minimum speed
(A-01) is not 0, the value is limited so that its absolute value is not below this speed. Since the speed
command is for the forward rotation only, use the reverse rotation operation command to perform the
reverse rotation.
b-19
b-18
+10 V
0V
Input voltage
Speed/voltage
command
Figure 2-1 When 0 to +10V is selected
(Analog input (1) speed/voltage lower limit (b-19) is 0
or more)
b-19
b-18
+10 V
0V
Input voltage
Speed/voltage
command
Figure 2-2 When 0 to +10V is selected
(Analog input (1) speed/voltage lower limit (b-19)
is less than 0)
3.
When the analog input (1) characteristics selection is
4 to 20 mA input (b-17 = 2)
When 4 mA is input, the characteristics are the setting of the analog input (1) speed/voltage lower limit
(b-19). When 20 mA is input, the characteristics are the setting of the analog input (1) speed/voltage
upper limit (b-18) (Figure 3-1). However, those are effective for positive currents only. When a negative
current is input, it is limited to the analog input (1) speed/voltage lower limit (b-19) (or 0 when a negative
value is set to the analog input (1) speed/voltage lower limit (b-19)) (Figure 3-2).
Incidentally, when the operation mode selection is speed control mode (i-07 = 0) and the minimum speed
(A-01) is not 0, the value is limited so that its absolute value is not below this speed. Since the speed
command is for the forward rotation only, use the reverse rotation operation command to perform the
reverse rotation.
b-19
b-18
20 mA
4 mA
Input current
Speed/voltage
command
Figure 3-1 When 4 to 20 mA is selected
(when b-19 is 0 or more)
b-19
b-18
20 mA
4 mA
Input current
Speed/voltage
command
Figure 3-2 When 4 to 20 mA is selected
(when b-19 is less than 0)
